newlines fixed

git-svn-id: svn://svn.icculus.org/quake3/trunk@6 edf5b092-35ff-0310-97b2-ce42778d08ea

33 files changed, 10826 insertions, 10826 deletions

diff --git a/libs/jpeg6/jchuff.h b/libs/jpeg6/jchuff.h
index 0a81d54..f43d571 100755
--- a/libs/jpeg6/jchuff.h
+++ b/libs/jpeg6/jchuff.h
@@ -1,34 +1,34 @@
-/*

- * jchuff.h

- *

- * Copyright (C) 1991-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains declarations for Huffman entropy encoding routines

- * that are shared between the sequential encoder (jchuff.c) and the

- * progressive encoder (jcphuff.c).  No other modules need to see these.

- */

-

-/* Derived data constructed for each Huffman table */

-

-typedef struct {

-  unsigned int ehufco[256];	/* code for each symbol */

-  char ehufsi[256];		/* length of code for each symbol */

-  /* If no code has been allocated for a symbol S, ehufsi[S] contains 0 */

-} c_derived_tbl;

-

-/* Short forms of external names for systems with brain-damaged linkers. */

-

-#ifdef NEED_SHORT_EXTERNAL_NAMES

-#define jpeg_make_c_derived_tbl	jMkCDerived

-#define jpeg_gen_optimal_table	jGenOptTbl

-#endif /* NEED_SHORT_EXTERNAL_NAMES */

-

-/* Expand a Huffman table definition into the derived format */

-EXTERN void jpeg_make_c_derived_tbl JPP((j_compress_ptr cinfo,

-				JHUFF_TBL * htbl, c_derived_tbl ** pdtbl));

-

-/* Generate an optimal table definition given the specified counts */

-EXTERN void jpeg_gen_optimal_table JPP((j_compress_ptr cinfo,

-					JHUFF_TBL * htbl, long freq[]));

+/*
+ * jchuff.h
+ *
+ * Copyright (C) 1991-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains declarations for Huffman entropy encoding routines
+ * that are shared between the sequential encoder (jchuff.c) and the
+ * progressive encoder (jcphuff.c).  No other modules need to see these.
+ */
+
+/* Derived data constructed for each Huffman table */
+
+typedef struct {
+  unsigned int ehufco[256];	/* code for each symbol */
+  char ehufsi[256];		/* length of code for each symbol */
+  /* If no code has been allocated for a symbol S, ehufsi[S] contains 0 */
+} c_derived_tbl;
+
+/* Short forms of external names for systems with brain-damaged linkers. */
+
+#ifdef NEED_SHORT_EXTERNAL_NAMES
+#define jpeg_make_c_derived_tbl	jMkCDerived
+#define jpeg_gen_optimal_table	jGenOptTbl
+#endif /* NEED_SHORT_EXTERNAL_NAMES */
+
+/* Expand a Huffman table definition into the derived format */
+EXTERN void jpeg_make_c_derived_tbl JPP((j_compress_ptr cinfo,
+				JHUFF_TBL * htbl, c_derived_tbl ** pdtbl));
+
+/* Generate an optimal table definition given the specified counts */
+EXTERN void jpeg_gen_optimal_table JPP((j_compress_ptr cinfo,
+					JHUFF_TBL * htbl, long freq[]));
diff --git a/libs/jpeg6/jcomapi.cpp b/libs/jpeg6/jcomapi.cpp
index 8f417c0..c10903f 100755
--- a/libs/jpeg6/jcomapi.cpp
+++ b/libs/jpeg6/jcomapi.cpp
@@ -1,94 +1,94 @@
-/*

- * jcomapi.c

- *

- * Copyright (C) 1994, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains application interface routines that are used for both

- * compression and decompression.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-

-

-/*

- * Abort processing of a JPEG compression or decompression operation,

- * but don't destroy the object itself.

- *

- * For this, we merely clean up all the nonpermanent memory pools.

- * Note that temp files (virtual arrays) are not allowed to belong to

- * the permanent pool, so we will be able to close all temp files here.

- * Closing a data source or destination, if necessary, is the application's

- * responsibility.

- */

-

-GLOBAL void

-jpeg_abort (j_common_ptr cinfo)

-{

-  int pool;

-

-  /* Releasing pools in reverse order might help avoid fragmentation

-   * with some (brain-damaged) malloc libraries.

-   */

-  for (pool = JPOOL_NUMPOOLS-1; pool > JPOOL_PERMANENT; pool--) {

-    (*cinfo->mem->free_pool) (cinfo, pool);

-  }

-

-  /* Reset overall state for possible reuse of object */

-  cinfo->global_state = (cinfo->is_decompressor ? DSTATE_START : CSTATE_START);

-}

-

-

-/*

- * Destruction of a JPEG object.

- *

- * Everything gets deallocated except the master jpeg_compress_struct itself

- * and the error manager struct.  Both of these are supplied by the application

- * and must be freed, if necessary, by the application.  (Often they are on

- * the stack and so don't need to be freed anyway.)

- * Closing a data source or destination, if necessary, is the application's

- * responsibility.

- */

-

-GLOBAL void

-jpeg_destroy (j_common_ptr cinfo)

-{

-  /* We need only tell the memory manager to release everything. */

-  /* NB: mem pointer is NULL if memory mgr failed to initialize. */

-  if (cinfo->mem != NULL)

-    (*cinfo->mem->self_destruct) (cinfo);

-  cinfo->mem = NULL;		/* be safe if jpeg_destroy is called twice */

-  cinfo->global_state = 0;	/* mark it destroyed */

-}

-

-

-/*

- * Convenience routines for allocating quantization and Huffman tables.

- * (Would jutils.c be a more reasonable place to put these?)

- */

-

-GLOBAL JQUANT_TBL *

-jpeg_alloc_quant_table (j_common_ptr cinfo)

-{

-  JQUANT_TBL *tbl;

-

-  tbl = (JQUANT_TBL *)

-    (*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, SIZEOF(JQUANT_TBL));

-  tbl->sent_table = FALSE;	/* make sure this is false in any new table */

-  return tbl;

-}

-

-

-GLOBAL JHUFF_TBL *

-jpeg_alloc_huff_table (j_common_ptr cinfo)

-{

-  JHUFF_TBL *tbl;

-

-  tbl = (JHUFF_TBL *)

-    (*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, SIZEOF(JHUFF_TBL));

-  tbl->sent_table = FALSE;	/* make sure this is false in any new table */

-  return tbl;

-}

+/*
+ * jcomapi.c
+ *
+ * Copyright (C) 1994, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains application interface routines that are used for both
+ * compression and decompression.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+
+
+/*
+ * Abort processing of a JPEG compression or decompression operation,
+ * but don't destroy the object itself.
+ *
+ * For this, we merely clean up all the nonpermanent memory pools.
+ * Note that temp files (virtual arrays) are not allowed to belong to
+ * the permanent pool, so we will be able to close all temp files here.
+ * Closing a data source or destination, if necessary, is the application's
+ * responsibility.
+ */
+
+GLOBAL void
+jpeg_abort (j_common_ptr cinfo)
+{
+  int pool;
+
+  /* Releasing pools in reverse order might help avoid fragmentation
+   * with some (brain-damaged) malloc libraries.
+   */
+  for (pool = JPOOL_NUMPOOLS-1; pool > JPOOL_PERMANENT; pool--) {
+    (*cinfo->mem->free_pool) (cinfo, pool);
+  }
+
+  /* Reset overall state for possible reuse of object */
+  cinfo->global_state = (cinfo->is_decompressor ? DSTATE_START : CSTATE_START);
+}
+
+
+/*
+ * Destruction of a JPEG object.
+ *
+ * Everything gets deallocated except the master jpeg_compress_struct itself
+ * and the error manager struct.  Both of these are supplied by the application
+ * and must be freed, if necessary, by the application.  (Often they are on
+ * the stack and so don't need to be freed anyway.)
+ * Closing a data source or destination, if necessary, is the application's
+ * responsibility.
+ */
+
+GLOBAL void
+jpeg_destroy (j_common_ptr cinfo)
+{
+  /* We need only tell the memory manager to release everything. */
+  /* NB: mem pointer is NULL if memory mgr failed to initialize. */
+  if (cinfo->mem != NULL)
+    (*cinfo->mem->self_destruct) (cinfo);
+  cinfo->mem = NULL;		/* be safe if jpeg_destroy is called twice */
+  cinfo->global_state = 0;	/* mark it destroyed */
+}
+
+
+/*
+ * Convenience routines for allocating quantization and Huffman tables.
+ * (Would jutils.c be a more reasonable place to put these?)
+ */
+
+GLOBAL JQUANT_TBL *
+jpeg_alloc_quant_table (j_common_ptr cinfo)
+{
+  JQUANT_TBL *tbl;
+
+  tbl = (JQUANT_TBL *)
+    (*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, SIZEOF(JQUANT_TBL));
+  tbl->sent_table = FALSE;	/* make sure this is false in any new table */
+  return tbl;
+}
+
+
+GLOBAL JHUFF_TBL *
+jpeg_alloc_huff_table (j_common_ptr cinfo)
+{
+  JHUFF_TBL *tbl;
+
+  tbl = (JHUFF_TBL *)
+    (*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, SIZEOF(JHUFF_TBL));
+  tbl->sent_table = FALSE;	/* make sure this is false in any new table */
+  return tbl;
+}
diff --git a/libs/jpeg6/jconfig.h b/libs/jpeg6/jconfig.h
index 187ecfc..7d2f733 100755
--- a/libs/jpeg6/jconfig.h
+++ b/libs/jpeg6/jconfig.h
@@ -1,41 +1,41 @@
-/* jconfig.wat --- jconfig.h for Watcom C/C++ on MS-DOS or OS/2. */

-/* see jconfig.doc for explanations */

-

-#define HAVE_PROTOTYPES

-#define HAVE_UNSIGNED_CHAR

-#define HAVE_UNSIGNED_SHORT

-/* #define void char */

-/* #define const */

-#define CHAR_IS_UNSIGNED

-#define HAVE_STDDEF_H

-#define HAVE_STDLIB_H

-#undef NEED_BSD_STRINGS

-#undef NEED_SYS_TYPES_H

-#undef NEED_FAR_POINTERS	/* Watcom uses flat 32-bit addressing */

-#undef NEED_SHORT_EXTERNAL_NAMES

-#undef INCOMPLETE_TYPES_BROKEN

-

-#define JDCT_DEFAULT  JDCT_FLOAT

-#define JDCT_FASTEST  JDCT_FLOAT

-

-#ifdef JPEG_INTERNALS

-

-#undef RIGHT_SHIFT_IS_UNSIGNED

-

-#endif /* JPEG_INTERNALS */

-

-#ifdef JPEG_CJPEG_DJPEG

-

-#define BMP_SUPPORTED		/* BMP image file format */

-#define GIF_SUPPORTED		/* GIF image file format */

-#define PPM_SUPPORTED		/* PBMPLUS PPM/PGM image file format */

-#undef RLE_SUPPORTED		/* Utah RLE image file format */

-#define TARGA_SUPPORTED		/* Targa image file format */

-

-#undef TWO_FILE_COMMANDLINE	/* optional */

-#define USE_SETMODE		/* Needed to make one-file style work in Watcom */

-#undef NEED_SIGNAL_CATCHER	/* Define this if you use jmemname.c */

-#undef DONT_USE_B_MODE

-#undef PROGRESS_REPORT		/* optional */

-

-#endif /* JPEG_CJPEG_DJPEG */

+/* jconfig.wat --- jconfig.h for Watcom C/C++ on MS-DOS or OS/2. */
+/* see jconfig.doc for explanations */
+
+#define HAVE_PROTOTYPES
+#define HAVE_UNSIGNED_CHAR
+#define HAVE_UNSIGNED_SHORT
+/* #define void char */
+/* #define const */
+#define CHAR_IS_UNSIGNED
+#define HAVE_STDDEF_H
+#define HAVE_STDLIB_H
+#undef NEED_BSD_STRINGS
+#undef NEED_SYS_TYPES_H
+#undef NEED_FAR_POINTERS	/* Watcom uses flat 32-bit addressing */
+#undef NEED_SHORT_EXTERNAL_NAMES
+#undef INCOMPLETE_TYPES_BROKEN
+
+#define JDCT_DEFAULT  JDCT_FLOAT
+#define JDCT_FASTEST  JDCT_FLOAT
+
+#ifdef JPEG_INTERNALS
+
+#undef RIGHT_SHIFT_IS_UNSIGNED
+
+#endif /* JPEG_INTERNALS */
+
+#ifdef JPEG_CJPEG_DJPEG
+
+#define BMP_SUPPORTED		/* BMP image file format */
+#define GIF_SUPPORTED		/* GIF image file format */
+#define PPM_SUPPORTED		/* PBMPLUS PPM/PGM image file format */
+#undef RLE_SUPPORTED		/* Utah RLE image file format */
+#define TARGA_SUPPORTED		/* Targa image file format */
+
+#undef TWO_FILE_COMMANDLINE	/* optional */
+#define USE_SETMODE		/* Needed to make one-file style work in Watcom */
+#undef NEED_SIGNAL_CATCHER	/* Define this if you use jmemname.c */
+#undef DONT_USE_B_MODE
+#undef PROGRESS_REPORT		/* optional */
+
+#endif /* JPEG_CJPEG_DJPEG */
diff --git a/libs/jpeg6/jdapimin.cpp b/libs/jpeg6/jdapimin.cpp
index 1bae6a2..1ea7ef1 100755
--- a/libs/jpeg6/jdapimin.cpp
+++ b/libs/jpeg6/jdapimin.cpp
@@ -1,400 +1,400 @@
-/*

- * jdapimin.c

- *

- * Copyright (C) 1994-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains application interface code for the decompression half

- * of the JPEG library.  These are the "minimum" API routines that may be

- * needed in either the normal full-decompression case or the

- * transcoding-only case.

- *

- * Most of the routines intended to be called directly by an application

- * are in this file or in jdapistd.c.  But also see jcomapi.c for routines

- * shared by compression and decompression, and jdtrans.c for the transcoding

- * case.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-

-

-/*

- * Initialization of a JPEG decompression object.

- * The error manager must already be set up (in case memory manager fails).

- */

-

-GLOBAL void

-jpeg_create_decompress (j_decompress_ptr cinfo)

-{

-  int i;

-

-  /* For debugging purposes, zero the whole master structure.

-   * But error manager pointer is already there, so save and restore it.

-   */

-  {

-    struct jpeg_error_mgr * err = cinfo->err;

-    i = sizeof(struct jpeg_decompress_struct);

-    i = SIZEOF(struct jpeg_decompress_struct);

-    MEMZERO(cinfo, SIZEOF(struct jpeg_decompress_struct));

-    cinfo->err = err;

-  }

-  cinfo->is_decompressor = TRUE;

-

-  /* Initialize a memory manager instance for this object */

-  jinit_memory_mgr((j_common_ptr) cinfo);

-

-  /* Zero out pointers to permanent structures. */

-  cinfo->progress = NULL;

-  cinfo->src = NULL;

-

-  for (i = 0; i < NUM_QUANT_TBLS; i++)

-    cinfo->quant_tbl_ptrs[i] = NULL;

-

-  for (i = 0; i < NUM_HUFF_TBLS; i++) {

-    cinfo->dc_huff_tbl_ptrs[i] = NULL;

-    cinfo->ac_huff_tbl_ptrs[i] = NULL;

-  }

-

-  /* Initialize marker processor so application can override methods

-   * for COM, APPn markers before calling jpeg_read_header.

-   */

-  jinit_marker_reader(cinfo);

-

-  /* And initialize the overall input controller. */

-  jinit_input_controller(cinfo);

-

-  /* OK, I'm ready */

-  cinfo->global_state = DSTATE_START;

-}

-

-

-/*

- * Destruction of a JPEG decompression object

- */

-

-GLOBAL void

-jpeg_destroy_decompress (j_decompress_ptr cinfo)

-{

-  jpeg_destroy((j_common_ptr) cinfo); /* use common routine */

-}

-

-

-/*

- * Abort processing of a JPEG decompression operation,

- * but don't destroy the object itself.

- */

-

-GLOBAL void

-jpeg_abort_decompress (j_decompress_ptr cinfo)

-{

-  jpeg_abort((j_common_ptr) cinfo); /* use common routine */

-}

-

-

-/*

- * Install a special processing method for COM or APPn markers.

- */

-

-GLOBAL void

-jpeg_set_marker_processor (j_decompress_ptr cinfo, int marker_code,

-			   jpeg_marker_parser_method routine)

-{

-  if (marker_code == JPEG_COM)

-    cinfo->marker->process_COM = routine;

-  else if (marker_code >= JPEG_APP0 && marker_code <= JPEG_APP0+15)

-    cinfo->marker->process_APPn[marker_code-JPEG_APP0] = routine;

-  else

-    ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, marker_code);

-}

-

-

-/*

- * Set default decompression parameters.

- */

-

-LOCAL void

-default_decompress_parms (j_decompress_ptr cinfo)

-{

-  /* Guess the input colorspace, and set output colorspace accordingly. */

-  /* (Wish JPEG committee had provided a real way to specify this...) */

-  /* Note application may override our guesses. */

-  switch (cinfo->num_components) {

-  case 1:

-    cinfo->jpeg_color_space = JCS_GRAYSCALE;

-    cinfo->out_color_space = JCS_GRAYSCALE;

-    break;

-    

-  case 3:

-    if (cinfo->saw_JFIF_marker) {

-      cinfo->jpeg_color_space = JCS_YCbCr; /* JFIF implies YCbCr */

-    } else if (cinfo->saw_Adobe_marker) {

-      switch (cinfo->Adobe_transform) {

-      case 0:

-	cinfo->jpeg_color_space = JCS_RGB;

-	break;

-      case 1:

-	cinfo->jpeg_color_space = JCS_YCbCr;

-	break;

-      default:

-	WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform);

-	cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */

-	break;

-      }

-    } else {

-      /* Saw no special markers, try to guess from the component IDs */

-      int cid0 = cinfo->comp_info[0].component_id;

-      int cid1 = cinfo->comp_info[1].component_id;

-      int cid2 = cinfo->comp_info[2].component_id;

-

-      if (cid0 == 1 && cid1 == 2 && cid2 == 3)

-	cinfo->jpeg_color_space = JCS_YCbCr; /* assume JFIF w/out marker */

-      else if (cid0 == 82 && cid1 == 71 && cid2 == 66)

-	cinfo->jpeg_color_space = JCS_RGB; /* ASCII 'R', 'G', 'B' */

-      else {

-	TRACEMS3(cinfo, 1, JTRC_UNKNOWN_IDS, cid0, cid1, cid2);

-	cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */

-      }

-    }

-    /* Always guess RGB is proper output colorspace. */

-    cinfo->out_color_space = JCS_RGB;

-    break;

-    

-  case 4:

-    if (cinfo->saw_Adobe_marker) {

-      switch (cinfo->Adobe_transform) {

-      case 0:

-	cinfo->jpeg_color_space = JCS_CMYK;

-	break;

-      case 2:

-	cinfo->jpeg_color_space = JCS_YCCK;

-	break;

-      default:

-	WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform);

-	cinfo->jpeg_color_space = JCS_YCCK; /* assume it's YCCK */

-	break;

-      }

-    } else {

-      /* No special markers, assume straight CMYK. */

-      cinfo->jpeg_color_space = JCS_CMYK;

-    }

-    cinfo->out_color_space = JCS_CMYK;

-    break;

-    

-  default:

-    cinfo->jpeg_color_space = JCS_UNKNOWN;

-    cinfo->out_color_space = JCS_UNKNOWN;

-    break;

-  }

-

-  /* Set defaults for other decompression parameters. */

-  cinfo->scale_num = 1;		/* 1:1 scaling */

-  cinfo->scale_denom = 1;

-  cinfo->output_gamma = 1.0;

-  cinfo->buffered_image = FALSE;

-  cinfo->raw_data_out = FALSE;

-  cinfo->dct_method = JDCT_DEFAULT;

-  cinfo->do_fancy_upsampling = TRUE;

-  cinfo->do_block_smoothing = TRUE;

-  cinfo->quantize_colors = FALSE;

-  /* We set these in case application only sets quantize_colors. */

-  cinfo->dither_mode = JDITHER_FS;

-#ifdef QUANT_2PASS_SUPPORTED

-  cinfo->two_pass_quantize = TRUE;

-#else

-  cinfo->two_pass_quantize = FALSE;

-#endif

-  cinfo->desired_number_of_colors = 256;

-  cinfo->colormap = NULL;

-  /* Initialize for no mode change in buffered-image mode. */

-  cinfo->enable_1pass_quant = FALSE;

-  cinfo->enable_external_quant = FALSE;

-  cinfo->enable_2pass_quant = FALSE;

-}

-

-

-/*

- * Decompression startup: read start of JPEG datastream to see what's there.

- * Need only initialize JPEG object and supply a data source before calling.

- *

- * This routine will read as far as the first SOS marker (ie, actual start of

- * compressed data), and will save all tables and parameters in the JPEG

- * object.  It will also initialize the decompression parameters to default

- * values, and finally return JPEG_HEADER_OK.  On return, the application may

- * adjust the decompression parameters and then call jpeg_start_decompress.

- * (Or, if the application only wanted to determine the image parameters,

- * the data need not be decompressed.  In that case, call jpeg_abort or

- * jpeg_destroy to release any temporary space.)

- * If an abbreviated (tables only) datastream is presented, the routine will

- * return JPEG_HEADER_TABLES_ONLY upon reaching EOI.  The application may then

- * re-use the JPEG object to read the abbreviated image datastream(s).

- * It is unnecessary (but OK) to call jpeg_abort in this case.

- * The JPEG_SUSPENDED return code only occurs if the data source module

- * requests suspension of the decompressor.  In this case the application

- * should load more source data and then re-call jpeg_read_header to resume

- * processing.

- * If a non-suspending data source is used and require_image is TRUE, then the

- * return code need not be inspected since only JPEG_HEADER_OK is possible.

- *

- * This routine is now just a front end to jpeg_consume_input, with some

- * extra error checking.

- */

-

-GLOBAL int

-jpeg_read_header (j_decompress_ptr cinfo, boolean require_image)

-{

-  int retcode;

-

-  if (cinfo->global_state != DSTATE_START &&

-      cinfo->global_state != DSTATE_INHEADER)

-    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);

-

-  retcode = jpeg_consume_input(cinfo);

-

-  switch (retcode) {

-  case JPEG_REACHED_SOS:

-    retcode = JPEG_HEADER_OK;

-    break;

-  case JPEG_REACHED_EOI:

-    if (require_image)		/* Complain if application wanted an image */

-      ERREXIT(cinfo, JERR_NO_IMAGE);

-    /* Reset to start state; it would be safer to require the application to

-     * call jpeg_abort, but we can't change it now for compatibility reasons.

-     * A side effect is to free any temporary memory (there shouldn't be any).

-     */

-    jpeg_abort((j_common_ptr) cinfo); /* sets state = DSTATE_START */

-    retcode = JPEG_HEADER_TABLES_ONLY;

-    break;

-  case JPEG_SUSPENDED:

-    /* no work */

-    break;

-  }

-

-  return retcode;

-}

-

-

-/*

- * Consume data in advance of what the decompressor requires.

- * This can be called at any time once the decompressor object has

- * been created and a data source has been set up.

- *

- * This routine is essentially a state machine that handles a couple

- * of critical state-transition actions, namely initial setup and

- * transition from header scanning to ready-for-start_decompress.

- * All the actual input is done via the input controller's consume_input

- * method.

- */

-

-GLOBAL int

-jpeg_consume_input (j_decompress_ptr cinfo)

-{

-  int retcode = JPEG_SUSPENDED;

-

-  /* NB: every possible DSTATE value should be listed in this switch */

-  switch (cinfo->global_state) {

-  case DSTATE_START:

-    /* Start-of-datastream actions: reset appropriate modules */

-    (*cinfo->inputctl->reset_input_controller) (cinfo);

-    /* Initialize application's data source module */

-    (*cinfo->src->init_source) (cinfo);

-    cinfo->global_state = DSTATE_INHEADER;

-    /*FALLTHROUGH*/

-  case DSTATE_INHEADER:

-    retcode = (*cinfo->inputctl->consume_input) (cinfo);

-    if (retcode == JPEG_REACHED_SOS) { /* Found SOS, prepare to decompress */

-      /* Set up default parameters based on header data */

-      default_decompress_parms(cinfo);

-      /* Set global state: ready for start_decompress */

-      cinfo->global_state = DSTATE_READY;

-    }

-    break;

-  case DSTATE_READY:

-    /* Can't advance past first SOS until start_decompress is called */

-    retcode = JPEG_REACHED_SOS;

-    break;

-  case DSTATE_PRELOAD:

-  case DSTATE_PRESCAN:

-  case DSTATE_SCANNING:

-  case DSTATE_RAW_OK:

-  case DSTATE_BUFIMAGE:

-  case DSTATE_BUFPOST:

-  case DSTATE_STOPPING:

-    retcode = (*cinfo->inputctl->consume_input) (cinfo);

-    break;

-  default:

-    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);

-  }

-  return retcode;

-}

-

-

-/*

- * Have we finished reading the input file?

- */

-

-GLOBAL boolean

-jpeg_input_complete (j_decompress_ptr cinfo)

-{

-  /* Check for valid jpeg object */

-  if (cinfo->global_state < DSTATE_START ||

-      cinfo->global_state > DSTATE_STOPPING)

-    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);

-  return cinfo->inputctl->eoi_reached;

-}

-

-

-/*

- * Is there more than one scan?

- */

-

-GLOBAL boolean

-jpeg_has_multiple_scans (j_decompress_ptr cinfo)

-{

-  /* Only valid after jpeg_read_header completes */

-  if (cinfo->global_state < DSTATE_READY ||

-      cinfo->global_state > DSTATE_STOPPING)

-    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);

-  return cinfo->inputctl->has_multiple_scans;

-}

-

-

-/*

- * Finish JPEG decompression.

- *

- * This will normally just verify the file trailer and release temp storage.

- *

- * Returns FALSE if suspended.  The return value need be inspected only if

- * a suspending data source is used.

- */

-

-GLOBAL boolean

-jpeg_finish_decompress (j_decompress_ptr cinfo)

-{

-  if ((cinfo->global_state == DSTATE_SCANNING ||

-       cinfo->global_state == DSTATE_RAW_OK) && ! cinfo->buffered_image) {

-    /* Terminate final pass of non-buffered mode */

-    if (cinfo->output_scanline < cinfo->output_height)

-      ERREXIT(cinfo, JERR_TOO_LITTLE_DATA);

-    (*cinfo->master->finish_output_pass) (cinfo);

-    cinfo->global_state = DSTATE_STOPPING;

-  } else if (cinfo->global_state == DSTATE_BUFIMAGE) {

-    /* Finishing after a buffered-image operation */

-    cinfo->global_state = DSTATE_STOPPING;

-  } else if (cinfo->global_state != DSTATE_STOPPING) {

-    /* STOPPING = repeat call after a suspension, anything else is error */

-    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);

-  }

-  /* Read until EOI */

-  while (! cinfo->inputctl->eoi_reached) {

-    if ((*cinfo->inputctl->consume_input) (cinfo) == JPEG_SUSPENDED)

-      return FALSE;		/* Suspend, come back later */

-  }

-  /* Do final cleanup */

-  (*cinfo->src->term_source) (cinfo);

-  /* We can use jpeg_abort to release memory and reset global_state */

-  jpeg_abort((j_common_ptr) cinfo);

-  return TRUE;

-}

+/*
+ * jdapimin.c
+ *
+ * Copyright (C) 1994-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains application interface code for the decompression half
+ * of the JPEG library.  These are the "minimum" API routines that may be
+ * needed in either the normal full-decompression case or the
+ * transcoding-only case.
+ *
+ * Most of the routines intended to be called directly by an application
+ * are in this file or in jdapistd.c.  But also see jcomapi.c for routines
+ * shared by compression and decompression, and jdtrans.c for the transcoding
+ * case.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+
+
+/*
+ * Initialization of a JPEG decompression object.
+ * The error manager must already be set up (in case memory manager fails).
+ */
+
+GLOBAL void
+jpeg_create_decompress (j_decompress_ptr cinfo)
+{
+  int i;
+
+  /* For debugging purposes, zero the whole master structure.
+   * But error manager pointer is already there, so save and restore it.
+   */
+  {
+    struct jpeg_error_mgr * err = cinfo->err;
+    i = sizeof(struct jpeg_decompress_struct);
+    i = SIZEOF(struct jpeg_decompress_struct);
+    MEMZERO(cinfo, SIZEOF(struct jpeg_decompress_struct));
+    cinfo->err = err;
+  }
+  cinfo->is_decompressor = TRUE;
+
+  /* Initialize a memory manager instance for this object */
+  jinit_memory_mgr((j_common_ptr) cinfo);
+
+  /* Zero out pointers to permanent structures. */
+  cinfo->progress = NULL;
+  cinfo->src = NULL;
+
+  for (i = 0; i < NUM_QUANT_TBLS; i++)
+    cinfo->quant_tbl_ptrs[i] = NULL;
+
+  for (i = 0; i < NUM_HUFF_TBLS; i++) {
+    cinfo->dc_huff_tbl_ptrs[i] = NULL;
+    cinfo->ac_huff_tbl_ptrs[i] = NULL;
+  }
+
+  /* Initialize marker processor so application can override methods
+   * for COM, APPn markers before calling jpeg_read_header.
+   */
+  jinit_marker_reader(cinfo);
+
+  /* And initialize the overall input controller. */
+  jinit_input_controller(cinfo);
+
+  /* OK, I'm ready */
+  cinfo->global_state = DSTATE_START;
+}
+
+
+/*
+ * Destruction of a JPEG decompression object
+ */
+
+GLOBAL void
+jpeg_destroy_decompress (j_decompress_ptr cinfo)
+{
+  jpeg_destroy((j_common_ptr) cinfo); /* use common routine */
+}
+
+
+/*
+ * Abort processing of a JPEG decompression operation,
+ * but don't destroy the object itself.
+ */
+
+GLOBAL void
+jpeg_abort_decompress (j_decompress_ptr cinfo)
+{
+  jpeg_abort((j_common_ptr) cinfo); /* use common routine */
+}
+
+
+/*
+ * Install a special processing method for COM or APPn markers.
+ */
+
+GLOBAL void
+jpeg_set_marker_processor (j_decompress_ptr cinfo, int marker_code,
+			   jpeg_marker_parser_method routine)
+{
+  if (marker_code == JPEG_COM)
+    cinfo->marker->process_COM = routine;
+  else if (marker_code >= JPEG_APP0 && marker_code <= JPEG_APP0+15)
+    cinfo->marker->process_APPn[marker_code-JPEG_APP0] = routine;
+  else
+    ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, marker_code);
+}
+
+
+/*
+ * Set default decompression parameters.
+ */
+
+LOCAL void
+default_decompress_parms (j_decompress_ptr cinfo)
+{
+  /* Guess the input colorspace, and set output colorspace accordingly. */
+  /* (Wish JPEG committee had provided a real way to specify this...) */
+  /* Note application may override our guesses. */
+  switch (cinfo->num_components) {
+  case 1:
+    cinfo->jpeg_color_space = JCS_GRAYSCALE;
+    cinfo->out_color_space = JCS_GRAYSCALE;
+    break;
+    
+  case 3:
+    if (cinfo->saw_JFIF_marker) {
+      cinfo->jpeg_color_space = JCS_YCbCr; /* JFIF implies YCbCr */
+    } else if (cinfo->saw_Adobe_marker) {
+      switch (cinfo->Adobe_transform) {
+      case 0:
+	cinfo->jpeg_color_space = JCS_RGB;
+	break;
+      case 1:
+	cinfo->jpeg_color_space = JCS_YCbCr;
+	break;
+      default:
+	WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform);
+	cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */
+	break;
+      }
+    } else {
+      /* Saw no special markers, try to guess from the component IDs */
+      int cid0 = cinfo->comp_info[0].component_id;
+      int cid1 = cinfo->comp_info[1].component_id;
+      int cid2 = cinfo->comp_info[2].component_id;
+
+      if (cid0 == 1 && cid1 == 2 && cid2 == 3)
+	cinfo->jpeg_color_space = JCS_YCbCr; /* assume JFIF w/out marker */
+      else if (cid0 == 82 && cid1 == 71 && cid2 == 66)
+	cinfo->jpeg_color_space = JCS_RGB; /* ASCII 'R', 'G', 'B' */
+      else {
+	TRACEMS3(cinfo, 1, JTRC_UNKNOWN_IDS, cid0, cid1, cid2);
+	cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */
+      }
+    }
+    /* Always guess RGB is proper output colorspace. */
+    cinfo->out_color_space = JCS_RGB;
+    break;
+    
+  case 4:
+    if (cinfo->saw_Adobe_marker) {
+      switch (cinfo->Adobe_transform) {
+      case 0:
+	cinfo->jpeg_color_space = JCS_CMYK;
+	break;
+      case 2:
+	cinfo->jpeg_color_space = JCS_YCCK;
+	break;
+      default:
+	WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform);
+	cinfo->jpeg_color_space = JCS_YCCK; /* assume it's YCCK */
+	break;
+      }
+    } else {
+      /* No special markers, assume straight CMYK. */
+      cinfo->jpeg_color_space = JCS_CMYK;
+    }
+    cinfo->out_color_space = JCS_CMYK;
+    break;
+    
+  default:
+    cinfo->jpeg_color_space = JCS_UNKNOWN;
+    cinfo->out_color_space = JCS_UNKNOWN;
+    break;
+  }
+
+  /* Set defaults for other decompression parameters. */
+  cinfo->scale_num = 1;		/* 1:1 scaling */
+  cinfo->scale_denom = 1;
+  cinfo->output_gamma = 1.0;
+  cinfo->buffered_image = FALSE;
+  cinfo->raw_data_out = FALSE;
+  cinfo->dct_method = JDCT_DEFAULT;
+  cinfo->do_fancy_upsampling = TRUE;
+  cinfo->do_block_smoothing = TRUE;
+  cinfo->quantize_colors = FALSE;
+  /* We set these in case application only sets quantize_colors. */
+  cinfo->dither_mode = JDITHER_FS;
+#ifdef QUANT_2PASS_SUPPORTED
+  cinfo->two_pass_quantize = TRUE;
+#else
+  cinfo->two_pass_quantize = FALSE;
+#endif
+  cinfo->desired_number_of_colors = 256;
+  cinfo->colormap = NULL;
+  /* Initialize for no mode change in buffered-image mode. */
+  cinfo->enable_1pass_quant = FALSE;
+  cinfo->enable_external_quant = FALSE;
+  cinfo->enable_2pass_quant = FALSE;
+}
+
+
+/*
+ * Decompression startup: read start of JPEG datastream to see what's there.
+ * Need only initialize JPEG object and supply a data source before calling.
+ *
+ * This routine will read as far as the first SOS marker (ie, actual start of
+ * compressed data), and will save all tables and parameters in the JPEG
+ * object.  It will also initialize the decompression parameters to default
+ * values, and finally return JPEG_HEADER_OK.  On return, the application may
+ * adjust the decompression parameters and then call jpeg_start_decompress.
+ * (Or, if the application only wanted to determine the image parameters,
+ * the data need not be decompressed.  In that case, call jpeg_abort or
+ * jpeg_destroy to release any temporary space.)
+ * If an abbreviated (tables only) datastream is presented, the routine will
+ * return JPEG_HEADER_TABLES_ONLY upon reaching EOI.  The application may then
+ * re-use the JPEG object to read the abbreviated image datastream(s).
+ * It is unnecessary (but OK) to call jpeg_abort in this case.
+ * The JPEG_SUSPENDED return code only occurs if the data source module
+ * requests suspension of the decompressor.  In this case the application
+ * should load more source data and then re-call jpeg_read_header to resume
+ * processing.
+ * If a non-suspending data source is used and require_image is TRUE, then the
+ * return code need not be inspected since only JPEG_HEADER_OK is possible.
+ *
+ * This routine is now just a front end to jpeg_consume_input, with some
+ * extra error checking.
+ */
+
+GLOBAL int
+jpeg_read_header (j_decompress_ptr cinfo, boolean require_image)
+{
+  int retcode;
+
+  if (cinfo->global_state != DSTATE_START &&
+      cinfo->global_state != DSTATE_INHEADER)
+    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
+
+  retcode = jpeg_consume_input(cinfo);
+
+  switch (retcode) {
+  case JPEG_REACHED_SOS:
+    retcode = JPEG_HEADER_OK;
+    break;
+  case JPEG_REACHED_EOI:
+    if (require_image)		/* Complain if application wanted an image */
+      ERREXIT(cinfo, JERR_NO_IMAGE);
+    /* Reset to start state; it would be safer to require the application to
+     * call jpeg_abort, but we can't change it now for compatibility reasons.
+     * A side effect is to free any temporary memory (there shouldn't be any).
+     */
+    jpeg_abort((j_common_ptr) cinfo); /* sets state = DSTATE_START */
+    retcode = JPEG_HEADER_TABLES_ONLY;
+    break;
+  case JPEG_SUSPENDED:
+    /* no work */
+    break;
+  }
+
+  return retcode;
+}
+
+
+/*
+ * Consume data in advance of what the decompressor requires.
+ * This can be called at any time once the decompressor object has
+ * been created and a data source has been set up.
+ *
+ * This routine is essentially a state machine that handles a couple
+ * of critical state-transition actions, namely initial setup and
+ * transition from header scanning to ready-for-start_decompress.
+ * All the actual input is done via the input controller's consume_input
+ * method.
+ */
+
+GLOBAL int
+jpeg_consume_input (j_decompress_ptr cinfo)
+{
+  int retcode = JPEG_SUSPENDED;
+
+  /* NB: every possible DSTATE value should be listed in this switch */
+  switch (cinfo->global_state) {
+  case DSTATE_START:
+    /* Start-of-datastream actions: reset appropriate modules */
+    (*cinfo->inputctl->reset_input_controller) (cinfo);
+    /* Initialize application's data source module */
+    (*cinfo->src->init_source) (cinfo);
+    cinfo->global_state = DSTATE_INHEADER;
+    /*FALLTHROUGH*/
+  case DSTATE_INHEADER:
+    retcode = (*cinfo->inputctl->consume_input) (cinfo);
+    if (retcode == JPEG_REACHED_SOS) { /* Found SOS, prepare to decompress */
+      /* Set up default parameters based on header data */
+      default_decompress_parms(cinfo);
+      /* Set global state: ready for start_decompress */
+      cinfo->global_state = DSTATE_READY;
+    }
+    break;
+  case DSTATE_READY:
+    /* Can't advance past first SOS until start_decompress is called */
+    retcode = JPEG_REACHED_SOS;
+    break;
+  case DSTATE_PRELOAD:
+  case DSTATE_PRESCAN:
+  case DSTATE_SCANNING:
+  case DSTATE_RAW_OK:
+  case DSTATE_BUFIMAGE:
+  case DSTATE_BUFPOST:
+  case DSTATE_STOPPING:
+    retcode = (*cinfo->inputctl->consume_input) (cinfo);
+    break;
+  default:
+    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
+  }
+  return retcode;
+}
+
+
+/*
+ * Have we finished reading the input file?
+ */
+
+GLOBAL boolean
+jpeg_input_complete (j_decompress_ptr cinfo)
+{
+  /* Check for valid jpeg object */
+  if (cinfo->global_state < DSTATE_START ||
+      cinfo->global_state > DSTATE_STOPPING)
+    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
+  return cinfo->inputctl->eoi_reached;
+}
+
+
+/*
+ * Is there more than one scan?
+ */
+
+GLOBAL boolean
+jpeg_has_multiple_scans (j_decompress_ptr cinfo)
+{
+  /* Only valid after jpeg_read_header completes */
+  if (cinfo->global_state < DSTATE_READY ||
+      cinfo->global_state > DSTATE_STOPPING)
+    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
+  return cinfo->inputctl->has_multiple_scans;
+}
+
+
+/*
+ * Finish JPEG decompression.
+ *
+ * This will normally just verify the file trailer and release temp storage.
+ *
+ * Returns FALSE if suspended.  The return value need be inspected only if
+ * a suspending data source is used.
+ */
+
+GLOBAL boolean
+jpeg_finish_decompress (j_decompress_ptr cinfo)
+{
+  if ((cinfo->global_state == DSTATE_SCANNING ||
+       cinfo->global_state == DSTATE_RAW_OK) && ! cinfo->buffered_image) {
+    /* Terminate final pass of non-buffered mode */
+    if (cinfo->output_scanline < cinfo->output_height)
+      ERREXIT(cinfo, JERR_TOO_LITTLE_DATA);
+    (*cinfo->master->finish_output_pass) (cinfo);
+    cinfo->global_state = DSTATE_STOPPING;
+  } else if (cinfo->global_state == DSTATE_BUFIMAGE) {
+    /* Finishing after a buffered-image operation */
+    cinfo->global_state = DSTATE_STOPPING;
+  } else if (cinfo->global_state != DSTATE_STOPPING) {
+    /* STOPPING = repeat call after a suspension, anything else is error */
+    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
+  }
+  /* Read until EOI */
+  while (! cinfo->inputctl->eoi_reached) {
+    if ((*cinfo->inputctl->consume_input) (cinfo) == JPEG_SUSPENDED)
+      return FALSE;		/* Suspend, come back later */
+  }
+  /* Do final cleanup */
+  (*cinfo->src->term_source) (cinfo);
+  /* We can use jpeg_abort to release memory and reset global_state */
+  jpeg_abort((j_common_ptr) cinfo);
+  return TRUE;
+}
diff --git a/libs/jpeg6/jdapistd.cpp b/libs/jpeg6/jdapistd.cpp
index 7781e16..e36f25c 100755
--- a/libs/jpeg6/jdapistd.cpp
+++ b/libs/jpeg6/jdapistd.cpp
@@ -1,275 +1,275 @@
-/*

- * jdapistd.c

- *

- * Copyright (C) 1994-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains application interface code for the decompression half

- * of the JPEG library.  These are the "standard" API routines that are

- * used in the normal full-decompression case.  They are not used by a

- * transcoding-only application.  Note that if an application links in

- * jpeg_start_decompress, it will end up linking in the entire decompressor.

- * We thus must separate this file from jdapimin.c to avoid linking the

- * whole decompression library into a transcoder.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-

-

-/* Forward declarations */

-LOCAL boolean output_pass_setup JPP((j_decompress_ptr cinfo));

-

-

-/*

- * Decompression initialization.

- * jpeg_read_header must be completed before calling this.

- *

- * If a multipass operating mode was selected, this will do all but the

- * last pass, and thus may take a great deal of time.

- *

- * Returns FALSE if suspended.  The return value need be inspected only if

- * a suspending data source is used.

- */

-

-GLOBAL boolean

-jpeg_start_decompress (j_decompress_ptr cinfo)

-{

-  if (cinfo->global_state == DSTATE_READY) {

-    /* First call: initialize master control, select active modules */

-    jinit_master_decompress(cinfo);

-    if (cinfo->buffered_image) {

-      /* No more work here; expecting jpeg_start_output next */

-      cinfo->global_state = DSTATE_BUFIMAGE;

-      return TRUE;

-    }

-    cinfo->global_state = DSTATE_PRELOAD;

-  }

-  if (cinfo->global_state == DSTATE_PRELOAD) {

-    /* If file has multiple scans, absorb them all into the coef buffer */

-    if (cinfo->inputctl->has_multiple_scans) {

-#ifdef D_MULTISCAN_FILES_SUPPORTED

-      for (;;) {

-	int retcode;

-	/* Call progress monitor hook if present */

-	if (cinfo->progress != NULL)

-	  (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);

-	/* Absorb some more input */

-	retcode = (*cinfo->inputctl->consume_input) (cinfo);

-	if (retcode == JPEG_SUSPENDED)

-	  return FALSE;

-	if (retcode == JPEG_REACHED_EOI)

-	  break;

-	/* Advance progress counter if appropriate */

-	if (cinfo->progress != NULL &&

-	    (retcode == JPEG_ROW_COMPLETED || retcode == JPEG_REACHED_SOS)) {

-	  if (++cinfo->progress->pass_counter >= cinfo->progress->pass_limit) {

-	    /* jdmaster underestimated number of scans; ratchet up one scan */

-	    cinfo->progress->pass_limit += (long) cinfo->total_iMCU_rows;

-	  }

-	}

-      }

-#else

-      ERREXIT(cinfo, JERR_NOT_COMPILED);

-#endif /* D_MULTISCAN_FILES_SUPPORTED */

-    }

-    cinfo->output_scan_number = cinfo->input_scan_number;

-  } else if (cinfo->global_state != DSTATE_PRESCAN)

-    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);

-  /* Perform any dummy output passes, and set up for the final pass */

-  return output_pass_setup(cinfo);

-}

-

-

-/*

- * Set up for an output pass, and perform any dummy pass(es) needed.

- * Common subroutine for jpeg_start_decompress and jpeg_start_output.

- * Entry: global_state = DSTATE_PRESCAN only if previously suspended.

- * Exit: If done, returns TRUE and sets global_state for proper output mode.

- *       If suspended, returns FALSE and sets global_state = DSTATE_PRESCAN.

- */

-

-LOCAL boolean

-output_pass_setup (j_decompress_ptr cinfo)

-{

-  if (cinfo->global_state != DSTATE_PRESCAN) {

-    /* First call: do pass setup */

-    (*cinfo->master->prepare_for_output_pass) (cinfo);

-    cinfo->output_scanline = 0;

-    cinfo->global_state = DSTATE_PRESCAN;

-  }

-  /* Loop over any required dummy passes */

-  while (cinfo->master->is_dummy_pass) {

-#ifdef QUANT_2PASS_SUPPORTED

-    /* Crank through the dummy pass */

-    while (cinfo->output_scanline < cinfo->output_height) {

-      JDIMENSION last_scanline;

-      /* Call progress monitor hook if present */

-      if (cinfo->progress != NULL) {

-	cinfo->progress->pass_counter = (long) cinfo->output_scanline;

-	cinfo->progress->pass_limit = (long) cinfo->output_height;

-	(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);

-      }

-      /* Process some data */

-      last_scanline = cinfo->output_scanline;

-      (*cinfo->main->process_data) (cinfo, (JSAMPARRAY) NULL,

-				    &cinfo->output_scanline, (JDIMENSION) 0);

-      if (cinfo->output_scanline == last_scanline)

-	return FALSE;		/* No progress made, must suspend */

-    }

-    /* Finish up dummy pass, and set up for another one */

-    (*cinfo->master->finish_output_pass) (cinfo);

-    (*cinfo->master->prepare_for_output_pass) (cinfo);

-    cinfo->output_scanline = 0;

-#else

-    ERREXIT(cinfo, JERR_NOT_COMPILED);

-#endif /* QUANT_2PASS_SUPPORTED */

-  }

-  /* Ready for application to drive output pass through

-   * jpeg_read_scanlines or jpeg_read_raw_data.

-   */

-  cinfo->global_state = cinfo->raw_data_out ? DSTATE_RAW_OK : DSTATE_SCANNING;

-  return TRUE;

-}

-

-

-/*

- * Read some scanlines of data from the JPEG decompressor.

- *

- * The return value will be the number of lines actually read.

- * This may be less than the number requested in several cases,

- * including bottom of image, data source suspension, and operating

- * modes that emit multiple scanlines at a time.

- *

- * Note: we warn about excess calls to jpeg_read_scanlines() since

- * this likely signals an application programmer error.  However,

- * an oversize buffer (max_lines > scanlines remaining) is not an error.

- */

-

-GLOBAL JDIMENSION

-jpeg_read_scanlines (j_decompress_ptr cinfo, JSAMPARRAY scanlines,

-		     JDIMENSION max_lines)

-{

-  JDIMENSION row_ctr;

-

-  if (cinfo->global_state != DSTATE_SCANNING)

-    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);

-  if (cinfo->output_scanline >= cinfo->output_height) {

-    WARNMS(cinfo, JWRN_TOO_MUCH_DATA);

-    return 0;

-  }

-

-  /* Call progress monitor hook if present */

-  if (cinfo->progress != NULL) {

-    cinfo->progress->pass_counter = (long) cinfo->output_scanline;

-    cinfo->progress->pass_limit = (long) cinfo->output_height;

-    (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);

-  }

-

-  /* Process some data */

-  row_ctr = 0;

-  (*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, max_lines);

-  cinfo->output_scanline += row_ctr;

-  return row_ctr;

-}

-

-

-/*

- * Alternate entry point to read raw data.

- * Processes exactly one iMCU row per call, unless suspended.

- */

-

-GLOBAL JDIMENSION

-jpeg_read_raw_data (j_decompress_ptr cinfo, JSAMPIMAGE data,

-		    JDIMENSION max_lines)

-{

-  JDIMENSION lines_per_iMCU_row;

-

-  if (cinfo->global_state != DSTATE_RAW_OK)

-    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);

-  if (cinfo->output_scanline >= cinfo->output_height) {

-    WARNMS(cinfo, JWRN_TOO_MUCH_DATA);

-    return 0;

-  }

-

-  /* Call progress monitor hook if present */

-  if (cinfo->progress != NULL) {

-    cinfo->progress->pass_counter = (long) cinfo->output_scanline;

-    cinfo->progress->pass_limit = (long) cinfo->output_height;

-    (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);

-  }

-

-  /* Verify that at least one iMCU row can be returned. */

-  lines_per_iMCU_row = cinfo->max_v_samp_factor * cinfo->min_DCT_scaled_size;

-  if (max_lines < lines_per_iMCU_row)

-    ERREXIT(cinfo, JERR_BUFFER_SIZE);

-

-  /* Decompress directly into user's buffer. */

-  if (! (*cinfo->coef->decompress_data) (cinfo, data))

-    return 0;			/* suspension forced, can do nothing more */

-

-  /* OK, we processed one iMCU row. */

-  cinfo->output_scanline += lines_per_iMCU_row;

-  return lines_per_iMCU_row;

-}

-

-

-/* Additional entry points for buffered-image mode. */

-

-#ifdef D_MULTISCAN_FILES_SUPPORTED

-

-/*

- * Initialize for an output pass in buffered-image mode.

- */

-

-GLOBAL boolean

-jpeg_start_output (j_decompress_ptr cinfo, int scan_number)

-{

-  if (cinfo->global_state != DSTATE_BUFIMAGE &&

-      cinfo->global_state != DSTATE_PRESCAN)

-    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);

-  /* Limit scan number to valid range */

-  if (scan_number <= 0)

-    scan_number = 1;

-  if (cinfo->inputctl->eoi_reached &&

-      scan_number > cinfo->input_scan_number)

-    scan_number = cinfo->input_scan_number;

-  cinfo->output_scan_number = scan_number;

-  /* Perform any dummy output passes, and set up for the real pass */

-  return output_pass_setup(cinfo);

-}

-

-

-/*

- * Finish up after an output pass in buffered-image mode.

- *

- * Returns FALSE if suspended.  The return value need be inspected only if

- * a suspending data source is used.

- */

-

-GLOBAL boolean

-jpeg_finish_output (j_decompress_ptr cinfo)

-{

-  if ((cinfo->global_state == DSTATE_SCANNING ||

-       cinfo->global_state == DSTATE_RAW_OK) && cinfo->buffered_image) {

-    /* Terminate this pass. */

-    /* We do not require the whole pass to have been completed. */

-    (*cinfo->master->finish_output_pass) (cinfo);

-    cinfo->global_state = DSTATE_BUFPOST;

-  } else if (cinfo->global_state != DSTATE_BUFPOST) {

-    /* BUFPOST = repeat call after a suspension, anything else is error */

-    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);

-  }

-  /* Read markers looking for SOS or EOI */

-  while (cinfo->input_scan_number <= cinfo->output_scan_number &&

-	 ! cinfo->inputctl->eoi_reached) {

-    if ((*cinfo->inputctl->consume_input) (cinfo) == JPEG_SUSPENDED)

-      return FALSE;		/* Suspend, come back later */

-  }

-  cinfo->global_state = DSTATE_BUFIMAGE;

-  return TRUE;

-}

-

-#endif /* D_MULTISCAN_FILES_SUPPORTED */

+/*
+ * jdapistd.c
+ *
+ * Copyright (C) 1994-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains application interface code for the decompression half
+ * of the JPEG library.  These are the "standard" API routines that are
+ * used in the normal full-decompression case.  They are not used by a
+ * transcoding-only application.  Note that if an application links in
+ * jpeg_start_decompress, it will end up linking in the entire decompressor.
+ * We thus must separate this file from jdapimin.c to avoid linking the
+ * whole decompression library into a transcoder.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+
+
+/* Forward declarations */
+LOCAL boolean output_pass_setup JPP((j_decompress_ptr cinfo));
+
+
+/*
+ * Decompression initialization.
+ * jpeg_read_header must be completed before calling this.
+ *
+ * If a multipass operating mode was selected, this will do all but the
+ * last pass, and thus may take a great deal of time.
+ *
+ * Returns FALSE if suspended.  The return value need be inspected only if
+ * a suspending data source is used.
+ */
+
+GLOBAL boolean
+jpeg_start_decompress (j_decompress_ptr cinfo)
+{
+  if (cinfo->global_state == DSTATE_READY) {
+    /* First call: initialize master control, select active modules */
+    jinit_master_decompress(cinfo);
+    if (cinfo->buffered_image) {
+      /* No more work here; expecting jpeg_start_output next */
+      cinfo->global_state = DSTATE_BUFIMAGE;
+      return TRUE;
+    }
+    cinfo->global_state = DSTATE_PRELOAD;
+  }
+  if (cinfo->global_state == DSTATE_PRELOAD) {
+    /* If file has multiple scans, absorb them all into the coef buffer */
+    if (cinfo->inputctl->has_multiple_scans) {
+#ifdef D_MULTISCAN_FILES_SUPPORTED
+      for (;;) {
+	int retcode;
+	/* Call progress monitor hook if present */
+	if (cinfo->progress != NULL)
+	  (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
+	/* Absorb some more input */
+	retcode = (*cinfo->inputctl->consume_input) (cinfo);
+	if (retcode == JPEG_SUSPENDED)
+	  return FALSE;
+	if (retcode == JPEG_REACHED_EOI)
+	  break;
+	/* Advance progress counter if appropriate */
+	if (cinfo->progress != NULL &&
+	    (retcode == JPEG_ROW_COMPLETED || retcode == JPEG_REACHED_SOS)) {
+	  if (++cinfo->progress->pass_counter >= cinfo->progress->pass_limit) {
+	    /* jdmaster underestimated number of scans; ratchet up one scan */
+	    cinfo->progress->pass_limit += (long) cinfo->total_iMCU_rows;
+	  }
+	}
+      }
+#else
+      ERREXIT(cinfo, JERR_NOT_COMPILED);
+#endif /* D_MULTISCAN_FILES_SUPPORTED */
+    }
+    cinfo->output_scan_number = cinfo->input_scan_number;
+  } else if (cinfo->global_state != DSTATE_PRESCAN)
+    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
+  /* Perform any dummy output passes, and set up for the final pass */
+  return output_pass_setup(cinfo);
+}
+
+
+/*
+ * Set up for an output pass, and perform any dummy pass(es) needed.
+ * Common subroutine for jpeg_start_decompress and jpeg_start_output.
+ * Entry: global_state = DSTATE_PRESCAN only if previously suspended.
+ * Exit: If done, returns TRUE and sets global_state for proper output mode.
+ *       If suspended, returns FALSE and sets global_state = DSTATE_PRESCAN.
+ */
+
+LOCAL boolean
+output_pass_setup (j_decompress_ptr cinfo)
+{
+  if (cinfo->global_state != DSTATE_PRESCAN) {
+    /* First call: do pass setup */
+    (*cinfo->master->prepare_for_output_pass) (cinfo);
+    cinfo->output_scanline = 0;
+    cinfo->global_state = DSTATE_PRESCAN;
+  }
+  /* Loop over any required dummy passes */
+  while (cinfo->master->is_dummy_pass) {
+#ifdef QUANT_2PASS_SUPPORTED
+    /* Crank through the dummy pass */
+    while (cinfo->output_scanline < cinfo->output_height) {
+      JDIMENSION last_scanline;
+      /* Call progress monitor hook if present */
+      if (cinfo->progress != NULL) {
+	cinfo->progress->pass_counter = (long) cinfo->output_scanline;
+	cinfo->progress->pass_limit = (long) cinfo->output_height;
+	(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
+      }
+      /* Process some data */
+      last_scanline = cinfo->output_scanline;
+      (*cinfo->main->process_data) (cinfo, (JSAMPARRAY) NULL,
+				    &cinfo->output_scanline, (JDIMENSION) 0);
+      if (cinfo->output_scanline == last_scanline)
+	return FALSE;		/* No progress made, must suspend */
+    }
+    /* Finish up dummy pass, and set up for another one */
+    (*cinfo->master->finish_output_pass) (cinfo);
+    (*cinfo->master->prepare_for_output_pass) (cinfo);
+    cinfo->output_scanline = 0;
+#else
+    ERREXIT(cinfo, JERR_NOT_COMPILED);
+#endif /* QUANT_2PASS_SUPPORTED */
+  }
+  /* Ready for application to drive output pass through
+   * jpeg_read_scanlines or jpeg_read_raw_data.
+   */
+  cinfo->global_state = cinfo->raw_data_out ? DSTATE_RAW_OK : DSTATE_SCANNING;
+  return TRUE;
+}
+
+
+/*
+ * Read some scanlines of data from the JPEG decompressor.
+ *
+ * The return value will be the number of lines actually read.
+ * This may be less than the number requested in several cases,
+ * including bottom of image, data source suspension, and operating
+ * modes that emit multiple scanlines at a time.
+ *
+ * Note: we warn about excess calls to jpeg_read_scanlines() since
+ * this likely signals an application programmer error.  However,
+ * an oversize buffer (max_lines > scanlines remaining) is not an error.
+ */
+
+GLOBAL JDIMENSION
+jpeg_read_scanlines (j_decompress_ptr cinfo, JSAMPARRAY scanlines,
+		     JDIMENSION max_lines)
+{
+  JDIMENSION row_ctr;
+
+  if (cinfo->global_state != DSTATE_SCANNING)
+    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
+  if (cinfo->output_scanline >= cinfo->output_height) {
+    WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
+    return 0;
+  }
+
+  /* Call progress monitor hook if present */
+  if (cinfo->progress != NULL) {
+    cinfo->progress->pass_counter = (long) cinfo->output_scanline;
+    cinfo->progress->pass_limit = (long) cinfo->output_height;
+    (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
+  }
+
+  /* Process some data */
+  row_ctr = 0;
+  (*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, max_lines);
+  cinfo->output_scanline += row_ctr;
+  return row_ctr;
+}
+
+
+/*
+ * Alternate entry point to read raw data.
+ * Processes exactly one iMCU row per call, unless suspended.
+ */
+
+GLOBAL JDIMENSION
+jpeg_read_raw_data (j_decompress_ptr cinfo, JSAMPIMAGE data,
+		    JDIMENSION max_lines)
+{
+  JDIMENSION lines_per_iMCU_row;
+
+  if (cinfo->global_state != DSTATE_RAW_OK)
+    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
+  if (cinfo->output_scanline >= cinfo->output_height) {
+    WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
+    return 0;
+  }
+
+  /* Call progress monitor hook if present */
+  if (cinfo->progress != NULL) {
+    cinfo->progress->pass_counter = (long) cinfo->output_scanline;
+    cinfo->progress->pass_limit = (long) cinfo->output_height;
+    (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
+  }
+
+  /* Verify that at least one iMCU row can be returned. */
+  lines_per_iMCU_row = cinfo->max_v_samp_factor * cinfo->min_DCT_scaled_size;
+  if (max_lines < lines_per_iMCU_row)
+    ERREXIT(cinfo, JERR_BUFFER_SIZE);
+
+  /* Decompress directly into user's buffer. */
+  if (! (*cinfo->coef->decompress_data) (cinfo, data))
+    return 0;			/* suspension forced, can do nothing more */
+
+  /* OK, we processed one iMCU row. */
+  cinfo->output_scanline += lines_per_iMCU_row;
+  return lines_per_iMCU_row;
+}
+
+
+/* Additional entry points for buffered-image mode. */
+
+#ifdef D_MULTISCAN_FILES_SUPPORTED
+
+/*
+ * Initialize for an output pass in buffered-image mode.
+ */
+
+GLOBAL boolean
+jpeg_start_output (j_decompress_ptr cinfo, int scan_number)
+{
+  if (cinfo->global_state != DSTATE_BUFIMAGE &&
+      cinfo->global_state != DSTATE_PRESCAN)
+    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
+  /* Limit scan number to valid range */
+  if (scan_number <= 0)
+    scan_number = 1;
+  if (cinfo->inputctl->eoi_reached &&
+      scan_number > cinfo->input_scan_number)
+    scan_number = cinfo->input_scan_number;
+  cinfo->output_scan_number = scan_number;
+  /* Perform any dummy output passes, and set up for the real pass */
+  return output_pass_setup(cinfo);
+}
+
+
+/*
+ * Finish up after an output pass in buffered-image mode.
+ *
+ * Returns FALSE if suspended.  The return value need be inspected only if
+ * a suspending data source is used.
+ */
+
+GLOBAL boolean
+jpeg_finish_output (j_decompress_ptr cinfo)
+{
+  if ((cinfo->global_state == DSTATE_SCANNING ||
+       cinfo->global_state == DSTATE_RAW_OK) && cinfo->buffered_image) {
+    /* Terminate this pass. */
+    /* We do not require the whole pass to have been completed. */
+    (*cinfo->master->finish_output_pass) (cinfo);
+    cinfo->global_state = DSTATE_BUFPOST;
+  } else if (cinfo->global_state != DSTATE_BUFPOST) {
+    /* BUFPOST = repeat call after a suspension, anything else is error */
+    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
+  }
+  /* Read markers looking for SOS or EOI */
+  while (cinfo->input_scan_number <= cinfo->output_scan_number &&
+	 ! cinfo->inputctl->eoi_reached) {
+    if ((*cinfo->inputctl->consume_input) (cinfo) == JPEG_SUSPENDED)
+      return FALSE;		/* Suspend, come back later */
+  }
+  cinfo->global_state = DSTATE_BUFIMAGE;
+  return TRUE;
+}
+
+#endif /* D_MULTISCAN_FILES_SUPPORTED */
diff --git a/libs/jpeg6/jdatasrc.cpp b/libs/jpeg6/jdatasrc.cpp
index 5c1696d..0bf7866 100755
--- a/libs/jpeg6/jdatasrc.cpp
+++ b/libs/jpeg6/jdatasrc.cpp
@@ -1,204 +1,204 @@
-/*

- * jdatasrc.c

- *

- * Copyright (C) 1994, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains decompression data source routines for the case of

- * reading JPEG data from a file (or any stdio stream).  While these routines

- * are sufficient for most applications, some will want to use a different

- * source manager.

- * IMPORTANT: we assume that fread() will correctly transcribe an array of

- * JOCTETs from 8-bit-wide elements on external storage.  If char is wider

- * than 8 bits on your machine, you may need to do some tweaking.

- */

-

-

-/* this is not a core library module, so it doesn't define JPEG_INTERNALS */

-#include "jinclude.h"

-#include "jpeglib.h"

-#include "jerror.h"

-

-

-/* Expanded data source object for stdio input */

-

-typedef struct {

-  struct jpeg_source_mgr pub;	/* public fields */

-

-  unsigned char *infile;		/* source stream */

-  JOCTET * buffer;		/* start of buffer */

-  boolean start_of_file;	/* have we gotten any data yet? */

-} my_source_mgr;

-

-typedef my_source_mgr * my_src_ptr;

-

-#define INPUT_BUF_SIZE  4096	/* choose an efficiently fread'able size */

-

-

-/*

- * Initialize source --- called by jpeg_read_header

- * before any data is actually read.

- */

-

-METHODDEF void

-init_source (j_decompress_ptr cinfo)

-{

-  my_src_ptr src = (my_src_ptr) cinfo->src;

-

-  /* We reset the empty-input-file flag for each image,

-   * but we don't clear the input buffer.

-   * This is correct behavior for reading a series of images from one source.

-   */

-  src->start_of_file = TRUE;

-}

-

-

-/*

- * Fill the input buffer --- called whenever buffer is emptied.

- *

- * In typical applications, this should read fresh data into the buffer

- * (ignoring the current state of next_input_byte & bytes_in_buffer),

- * reset the pointer & count to the start of the buffer, and return TRUE

- * indicating that the buffer has been reloaded.  It is not necessary to

- * fill the buffer entirely, only to obtain at least one more byte.

- *

- * There is no such thing as an EOF return.  If the end of the file has been

- * reached, the routine has a choice of ERREXIT() or inserting fake data into

- * the buffer.  In most cases, generating a warning message and inserting a

- * fake EOI marker is the best course of action --- this will allow the

- * decompressor to output however much of the image is there.  However,

- * the resulting error message is misleading if the real problem is an empty

- * input file, so we handle that case specially.

- *

- * In applications that need to be able to suspend compression due to input

- * not being available yet, a FALSE return indicates that no more data can be

- * obtained right now, but more may be forthcoming later.  In this situation,

- * the decompressor will return to its caller (with an indication of the

- * number of scanlines it has read, if any).  The application should resume

- * decompression after it has loaded more data into the input buffer.  Note

- * that there are substantial restrictions on the use of suspension --- see

- * the documentation.

- *

- * When suspending, the decompressor will back up to a convenient restart point

- * (typically the start of the current MCU). next_input_byte & bytes_in_buffer

- * indicate where the restart point will be if the current call returns FALSE.

- * Data beyond this point must be rescanned after resumption, so move it to

- * the front of the buffer rather than discarding it.

- */

-

-METHODDEF boolean

-fill_input_buffer (j_decompress_ptr cinfo)

-{

-  my_src_ptr src = (my_src_ptr) cinfo->src;

-

-  memcpy( src->buffer, src->infile, INPUT_BUF_SIZE );

-

-  src->infile += INPUT_BUF_SIZE;

-

-  src->pub.next_input_byte = src->buffer;

-  src->pub.bytes_in_buffer = INPUT_BUF_SIZE;

-  src->start_of_file = FALSE;

-

-  return TRUE;

-}

-

-

-/*

- * Skip data --- used to skip over a potentially large amount of

- * uninteresting data (such as an APPn marker).

- *

- * Writers of suspendable-input applications must note that skip_input_data

- * is not granted the right to give a suspension return.  If the skip extends

- * beyond the data currently in the buffer, the buffer can be marked empty so

- * that the next read will cause a fill_input_buffer call that can suspend.

- * Arranging for additional bytes to be discarded before reloading the input

- * buffer is the application writer's problem.

- */

-

-METHODDEF void

-skip_input_data (j_decompress_ptr cinfo, long num_bytes)

-{

-  my_src_ptr src = (my_src_ptr) cinfo->src;

-

-  /* Just a dumb implementation for now.  Could use fseek() except

-   * it doesn't work on pipes.  Not clear that being smart is worth

-   * any trouble anyway --- large skips are infrequent.

-   */

-  if (num_bytes > 0) {

-    while (num_bytes > (long) src->pub.bytes_in_buffer) {

-      num_bytes -= (long) src->pub.bytes_in_buffer;

-      (void) fill_input_buffer(cinfo);

-      /* note we assume that fill_input_buffer will never return FALSE,

-       * so suspension need not be handled.

-       */

-    }

-    src->pub.next_input_byte += (size_t) num_bytes;

-    src->pub.bytes_in_buffer -= (size_t) num_bytes;

-  }

-}

-

-

-/*

- * An additional method that can be provided by data source modules is the

- * resync_to_restart method for error recovery in the presence of RST markers.

- * For the moment, this source module just uses the default resync method

- * provided by the JPEG library.  That method assumes that no backtracking

- * is possible.

- */

-

-

-/*

- * Terminate source --- called by jpeg_finish_decompress

- * after all data has been read.  Often a no-op.

- *

- * NB: *not* called by jpeg_abort or jpeg_destroy; surrounding

- * application must deal with any cleanup that should happen even

- * for error exit.

- */

-

-METHODDEF void

-term_source (j_decompress_ptr cinfo)

-{

-  /* no work necessary here */

-}

-

-

-/*

- * Prepare for input from a stdio stream.

- * The caller must have already opened the stream, and is responsible

- * for closing it after finishing decompression.

- */

-

-GLOBAL void

-jpeg_stdio_src (j_decompress_ptr cinfo, unsigned char *infile)

-{

-  my_src_ptr src;

-

-  /* The source object and input buffer are made permanent so that a series

-   * of JPEG images can be read from the same file by calling jpeg_stdio_src

-   * only before the first one.  (If we discarded the buffer at the end of

-   * one image, we'd likely lose the start of the next one.)

-   * This makes it unsafe to use this manager and a different source

-   * manager serially with the same JPEG object.  Caveat programmer.

-   */

-  if (cinfo->src == NULL) {	/* first time for this JPEG object? */

-    cinfo->src = (struct jpeg_source_mgr *)

-      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,

-				  SIZEOF(my_source_mgr));

-    src = (my_src_ptr) cinfo->src;

-    src->buffer = (JOCTET *)

-      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,

-				  INPUT_BUF_SIZE * SIZEOF(JOCTET));

-  }

-

-  src = (my_src_ptr) cinfo->src;

-  src->pub.init_source = init_source;

-  src->pub.fill_input_buffer = fill_input_buffer;

-  src->pub.skip_input_data = skip_input_data;

-  src->pub.resync_to_restart = jpeg_resync_to_restart; /* use default method */

-  src->pub.term_source = term_source;

-  src->infile = infile;

-  src->pub.bytes_in_buffer = 0; /* forces fill_input_buffer on first read */

-  src->pub.next_input_byte = NULL; /* until buffer loaded */

-}

+/*
+ * jdatasrc.c
+ *
+ * Copyright (C) 1994, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains decompression data source routines for the case of
+ * reading JPEG data from a file (or any stdio stream).  While these routines
+ * are sufficient for most applications, some will want to use a different
+ * source manager.
+ * IMPORTANT: we assume that fread() will correctly transcribe an array of
+ * JOCTETs from 8-bit-wide elements on external storage.  If char is wider
+ * than 8 bits on your machine, you may need to do some tweaking.
+ */
+
+
+/* this is not a core library module, so it doesn't define JPEG_INTERNALS */
+#include "jinclude.h"
+#include "jpeglib.h"
+#include "jerror.h"
+
+
+/* Expanded data source object for stdio input */
+
+typedef struct {
+  struct jpeg_source_mgr pub;	/* public fields */
+
+  unsigned char *infile;		/* source stream */
+  JOCTET * buffer;		/* start of buffer */
+  boolean start_of_file;	/* have we gotten any data yet? */
+} my_source_mgr;
+
+typedef my_source_mgr * my_src_ptr;
+
+#define INPUT_BUF_SIZE  4096	/* choose an efficiently fread'able size */
+
+
+/*
+ * Initialize source --- called by jpeg_read_header
+ * before any data is actually read.
+ */
+
+METHODDEF void
+init_source (j_decompress_ptr cinfo)
+{
+  my_src_ptr src = (my_src_ptr) cinfo->src;
+
+  /* We reset the empty-input-file flag for each image,
+   * but we don't clear the input buffer.
+   * This is correct behavior for reading a series of images from one source.
+   */
+  src->start_of_file = TRUE;
+}
+
+
+/*
+ * Fill the input buffer --- called whenever buffer is emptied.
+ *
+ * In typical applications, this should read fresh data into the buffer
+ * (ignoring the current state of next_input_byte & bytes_in_buffer),
+ * reset the pointer & count to the start of the buffer, and return TRUE
+ * indicating that the buffer has been reloaded.  It is not necessary to
+ * fill the buffer entirely, only to obtain at least one more byte.
+ *
+ * There is no such thing as an EOF return.  If the end of the file has been
+ * reached, the routine has a choice of ERREXIT() or inserting fake data into
+ * the buffer.  In most cases, generating a warning message and inserting a
+ * fake EOI marker is the best course of action --- this will allow the
+ * decompressor to output however much of the image is there.  However,
+ * the resulting error message is misleading if the real problem is an empty
+ * input file, so we handle that case specially.
+ *
+ * In applications that need to be able to suspend compression due to input
+ * not being available yet, a FALSE return indicates that no more data can be
+ * obtained right now, but more may be forthcoming later.  In this situation,
+ * the decompressor will return to its caller (with an indication of the
+ * number of scanlines it has read, if any).  The application should resume
+ * decompression after it has loaded more data into the input buffer.  Note
+ * that there are substantial restrictions on the use of suspension --- see
+ * the documentation.
+ *
+ * When suspending, the decompressor will back up to a convenient restart point
+ * (typically the start of the current MCU). next_input_byte & bytes_in_buffer
+ * indicate where the restart point will be if the current call returns FALSE.
+ * Data beyond this point must be rescanned after resumption, so move it to
+ * the front of the buffer rather than discarding it.
+ */
+
+METHODDEF boolean
+fill_input_buffer (j_decompress_ptr cinfo)
+{
+  my_src_ptr src = (my_src_ptr) cinfo->src;
+
+  memcpy( src->buffer, src->infile, INPUT_BUF_SIZE );
+
+  src->infile += INPUT_BUF_SIZE;
+
+  src->pub.next_input_byte = src->buffer;
+  src->pub.bytes_in_buffer = INPUT_BUF_SIZE;
+  src->start_of_file = FALSE;
+
+  return TRUE;
+}
+
+
+/*
+ * Skip data --- used to skip over a potentially large amount of
+ * uninteresting data (such as an APPn marker).
+ *
+ * Writers of suspendable-input applications must note that skip_input_data
+ * is not granted the right to give a suspension return.  If the skip extends
+ * beyond the data currently in the buffer, the buffer can be marked empty so
+ * that the next read will cause a fill_input_buffer call that can suspend.
+ * Arranging for additional bytes to be discarded before reloading the input
+ * buffer is the application writer's problem.
+ */
+
+METHODDEF void
+skip_input_data (j_decompress_ptr cinfo, long num_bytes)
+{
+  my_src_ptr src = (my_src_ptr) cinfo->src;
+
+  /* Just a dumb implementation for now.  Could use fseek() except
+   * it doesn't work on pipes.  Not clear that being smart is worth
+   * any trouble anyway --- large skips are infrequent.
+   */
+  if (num_bytes > 0) {
+    while (num_bytes > (long) src->pub.bytes_in_buffer) {
+      num_bytes -= (long) src->pub.bytes_in_buffer;
+      (void) fill_input_buffer(cinfo);
+      /* note we assume that fill_input_buffer will never return FALSE,
+       * so suspension need not be handled.
+       */
+    }
+    src->pub.next_input_byte += (size_t) num_bytes;
+    src->pub.bytes_in_buffer -= (size_t) num_bytes;
+  }
+}
+
+
+/*
+ * An additional method that can be provided by data source modules is the
+ * resync_to_restart method for error recovery in the presence of RST markers.
+ * For the moment, this source module just uses the default resync method
+ * provided by the JPEG library.  That method assumes that no backtracking
+ * is possible.
+ */
+
+
+/*
+ * Terminate source --- called by jpeg_finish_decompress
+ * after all data has been read.  Often a no-op.
+ *
+ * NB: *not* called by jpeg_abort or jpeg_destroy; surrounding
+ * application must deal with any cleanup that should happen even
+ * for error exit.
+ */
+
+METHODDEF void
+term_source (j_decompress_ptr cinfo)
+{
+  /* no work necessary here */
+}
+
+
+/*
+ * Prepare for input from a stdio stream.
+ * The caller must have already opened the stream, and is responsible
+ * for closing it after finishing decompression.
+ */
+
+GLOBAL void
+jpeg_stdio_src (j_decompress_ptr cinfo, unsigned char *infile)
+{
+  my_src_ptr src;
+
+  /* The source object and input buffer are made permanent so that a series
+   * of JPEG images can be read from the same file by calling jpeg_stdio_src
+   * only before the first one.  (If we discarded the buffer at the end of
+   * one image, we'd likely lose the start of the next one.)
+   * This makes it unsafe to use this manager and a different source
+   * manager serially with the same JPEG object.  Caveat programmer.
+   */
+  if (cinfo->src == NULL) {	/* first time for this JPEG object? */
+    cinfo->src = (struct jpeg_source_mgr *)
+      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
+				  SIZEOF(my_source_mgr));
+    src = (my_src_ptr) cinfo->src;
+    src->buffer = (JOCTET *)
+      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
+				  INPUT_BUF_SIZE * SIZEOF(JOCTET));
+  }
+
+  src = (my_src_ptr) cinfo->src;
+  src->pub.init_source = init_source;
+  src->pub.fill_input_buffer = fill_input_buffer;
+  src->pub.skip_input_data = skip_input_data;
+  src->pub.resync_to_restart = jpeg_resync_to_restart; /* use default method */
+  src->pub.term_source = term_source;
+  src->infile = infile;
+  src->pub.bytes_in_buffer = 0; /* forces fill_input_buffer on first read */
+  src->pub.next_input_byte = NULL; /* until buffer loaded */
+}
diff --git a/libs/jpeg6/jdcoefct.cpp b/libs/jpeg6/jdcoefct.cpp
index 2b20c07..ba153f5 100755
--- a/libs/jpeg6/jdcoefct.cpp
+++ b/libs/jpeg6/jdcoefct.cpp
@@ -1,725 +1,725 @@
-/*

- * jdcoefct.c

- *

- * Copyright (C) 1994-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains the coefficient buffer controller for decompression.

- * This controller is the top level of the JPEG decompressor proper.

- * The coefficient buffer lies between entropy decoding and inverse-DCT steps.

- *

- * In buffered-image mode, this controller is the interface between

- * input-oriented processing and output-oriented processing.

- * Also, the input side (only) is used when reading a file for transcoding.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-

-/* Block smoothing is only applicable for progressive JPEG, so: */

-#ifndef D_PROGRESSIVE_SUPPORTED

-#undef BLOCK_SMOOTHING_SUPPORTED

-#endif

-

-/* Private buffer controller object */

-

-typedef struct {

-  struct jpeg_d_coef_controller pub; /* public fields */

-

-  /* These variables keep track of the current location of the input side. */

-  /* cinfo->input_iMCU_row is also used for this. */

-  JDIMENSION MCU_ctr;		/* counts MCUs processed in current row */

-  int MCU_vert_offset;		/* counts MCU rows within iMCU row */

-  int MCU_rows_per_iMCU_row;	/* number of such rows needed */

-

-  /* The output side's location is represented by cinfo->output_iMCU_row. */

-

-  /* In single-pass modes, it's sufficient to buffer just one MCU.

-   * We allocate a workspace of D_MAX_BLOCKS_IN_MCU coefficient blocks,

-   * and let the entropy decoder write into that workspace each time.

-   * (On 80x86, the workspace is FAR even though it's not really very big;

-   * this is to keep the module interfaces unchanged when a large coefficient

-   * buffer is necessary.)

-   * In multi-pass modes, this array points to the current MCU's blocks

-   * within the virtual arrays; it is used only by the input side.

-   */

-  JBLOCKROW MCU_buffer[D_MAX_BLOCKS_IN_MCU];

-

-#ifdef D_MULTISCAN_FILES_SUPPORTED

-  /* In multi-pass modes, we need a virtual block array for each component. */

-  jvirt_barray_ptr whole_image[MAX_COMPONENTS];

-#endif

-

-#ifdef BLOCK_SMOOTHING_SUPPORTED

-  /* When doing block smoothing, we latch coefficient Al values here */

-  int * coef_bits_latch;

-#define SAVED_COEFS  6		/* we save coef_bits[0..5] */

-#endif

-} my_coef_controller;

-

-typedef my_coef_controller * my_coef_ptr;

-

-/* Forward declarations */

-METHODDEF int decompress_onepass

-	JPP((j_decompress_ptr cinfo, JSAMPIMAGE output_buf));

-#ifdef D_MULTISCAN_FILES_SUPPORTED

-METHODDEF int decompress_data

-	JPP((j_decompress_ptr cinfo, JSAMPIMAGE output_buf));

-#endif

-#ifdef BLOCK_SMOOTHING_SUPPORTED

-LOCAL boolean smoothing_ok JPP((j_decompress_ptr cinfo));

-METHODDEF int decompress_smooth_data

-	JPP((j_decompress_ptr cinfo, JSAMPIMAGE output_buf));

-#endif

-

-

-LOCAL void

-start_iMCU_row (j_decompress_ptr cinfo)

-/* Reset within-iMCU-row counters for a new row (input side) */

-{

-  my_coef_ptr coef = (my_coef_ptr) cinfo->coef;

-

-  /* In an interleaved scan, an MCU row is the same as an iMCU row.

-   * In a noninterleaved scan, an iMCU row has v_samp_factor MCU rows.

-   * But at the bottom of the image, process only what's left.

-   */

-  if (cinfo->comps_in_scan > 1) {

-    coef->MCU_rows_per_iMCU_row = 1;

-  } else {

-    if (cinfo->input_iMCU_row < (cinfo->total_iMCU_rows-1))

-      coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->v_samp_factor;

-    else

-      coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->last_row_height;

-  }

-

-  coef->MCU_ctr = 0;

-  coef->MCU_vert_offset = 0;

-}

-

-

-/*

- * Initialize for an input processing pass.

- */

-

-METHODDEF void

-start_input_pass (j_decompress_ptr cinfo)

-{

-  cinfo->input_iMCU_row = 0;

-  start_iMCU_row(cinfo);

-}

-

-

-/*

- * Initialize for an output processing pass.

- */

-

-METHODDEF void

-start_output_pass (j_decompress_ptr cinfo)

-{

-#ifdef BLOCK_SMOOTHING_SUPPORTED

-  my_coef_ptr coef = (my_coef_ptr) cinfo->coef;

-

-  /* If multipass, check to see whether to use block smoothing on this pass */

-  if (coef->pub.coef_arrays != NULL) {

-    if (cinfo->do_block_smoothing && smoothing_ok(cinfo))

-      coef->pub.decompress_data = decompress_smooth_data;

-    else

-      coef->pub.decompress_data = decompress_data;

-  }

-#endif

-  cinfo->output_iMCU_row = 0;

-}

-

-

-/*

- * Decompress and return some data in the single-pass case.

- * Always attempts to emit one fully interleaved MCU row ("iMCU" row).

- * Input and output must run in lockstep since we have only a one-MCU buffer.

- * Return value is JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, or JPEG_SUSPENDED.

- *

- * NB: output_buf contains a plane for each component in image.

- * For single pass, this is the same as the components in the scan.

- */

-

-METHODDEF int

-decompress_onepass (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)

-{

-  my_coef_ptr coef = (my_coef_ptr) cinfo->coef;

-  JDIMENSION MCU_col_num;	/* index of current MCU within row */

-  JDIMENSION last_MCU_col = cinfo->MCUs_per_row - 1;

-  JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1;

-  int blkn, ci, xindex, yindex, yoffset, useful_width;

-  JSAMPARRAY output_ptr;

-  JDIMENSION start_col, output_col;

-  jpeg_component_info *compptr;

-  inverse_DCT_method_ptr inverse_DCT;

-

-  /* Loop to process as much as one whole iMCU row */

-  for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row;

-       yoffset++) {

-    for (MCU_col_num = coef->MCU_ctr; MCU_col_num <= last_MCU_col;

-	 MCU_col_num++) {

-      /* Try to fetch an MCU.  Entropy decoder expects buffer to be zeroed. */

-      jzero_far((void FAR *) coef->MCU_buffer[0],

-		(size_t) (cinfo->blocks_in_MCU * SIZEOF(JBLOCK)));

-      if (! (*cinfo->entropy->decode_mcu) (cinfo, coef->MCU_buffer)) {

-	/* Suspension forced; update state counters and exit */

-	coef->MCU_vert_offset = yoffset;

-	coef->MCU_ctr = MCU_col_num;

-	return JPEG_SUSPENDED;

-      }

-      /* Determine where data should go in output_buf and do the IDCT thing.

-       * We skip dummy blocks at the right and bottom edges (but blkn gets

-       * incremented past them!).  Note the inner loop relies on having

-       * allocated the MCU_buffer[] blocks sequentially.

-       */

-      blkn = 0;			/* index of current DCT block within MCU */

-      for (ci = 0; ci < cinfo->comps_in_scan; ci++) {

-	compptr = cinfo->cur_comp_info[ci];

-	/* Don't bother to IDCT an uninteresting component. */

-	if (! compptr->component_needed) {

-	  blkn += compptr->MCU_blocks;

-	  continue;

-	}

-	inverse_DCT = cinfo->idct->inverse_DCT[compptr->component_index];

-	useful_width = (MCU_col_num < last_MCU_col) ? compptr->MCU_width

-						    : compptr->last_col_width;

-	output_ptr = output_buf[ci] + yoffset * compptr->DCT_scaled_size;

-	start_col = MCU_col_num * compptr->MCU_sample_width;

-	for (yindex = 0; yindex < compptr->MCU_height; yindex++) {

-	  if (cinfo->input_iMCU_row < last_iMCU_row ||

-	      yoffset+yindex < compptr->last_row_height) {

-	    output_col = start_col;

-	    for (xindex = 0; xindex < useful_width; xindex++) {

-	      (*inverse_DCT) (cinfo, compptr,

-			      (JCOEFPTR) coef->MCU_buffer[blkn+xindex],

-			      output_ptr, output_col);

-	      output_col += compptr->DCT_scaled_size;

-	    }

-	  }

-	  blkn += compptr->MCU_width;

-	  output_ptr += compptr->DCT_scaled_size;

-	}

-      }

-    }

-    /* Completed an MCU row, but perhaps not an iMCU row */

-    coef->MCU_ctr = 0;

-  }

-  /* Completed the iMCU row, advance counters for next one */

-  cinfo->output_iMCU_row++;

-  if (++(cinfo->input_iMCU_row) < cinfo->total_iMCU_rows) {

-    start_iMCU_row(cinfo);

-    return JPEG_ROW_COMPLETED;

-  }

-  /* Completed the scan */

-  (*cinfo->inputctl->finish_input_pass) (cinfo);

-  return JPEG_SCAN_COMPLETED;

-}

-

-

-/*

- * Dummy consume-input routine for single-pass operation.

- */

-

-METHODDEF int

-dummy_consume_data (j_decompress_ptr cinfo)

-{

-  return JPEG_SUSPENDED;	/* Always indicate nothing was done */

-}

-

-

-#ifdef D_MULTISCAN_FILES_SUPPORTED

-

-/*

- * Consume input data and store it in the full-image coefficient buffer.

- * We read as much as one fully interleaved MCU row ("iMCU" row) per call,

- * ie, v_samp_factor block rows for each component in the scan.

- * Return value is JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, or JPEG_SUSPENDED.

- */

-

-METHODDEF int

-consume_data (j_decompress_ptr cinfo)

-{

-  my_coef_ptr coef = (my_coef_ptr) cinfo->coef;

-  JDIMENSION MCU_col_num;	/* index of current MCU within row */

-  int blkn, ci, xindex, yindex, yoffset;

-  JDIMENSION start_col;

-  JBLOCKARRAY buffer[MAX_COMPS_IN_SCAN];

-  JBLOCKROW buffer_ptr;

-  jpeg_component_info *compptr;

-

-  /* Align the virtual buffers for the components used in this scan. */

-  for (ci = 0; ci < cinfo->comps_in_scan; ci++) {

-    compptr = cinfo->cur_comp_info[ci];

-    buffer[ci] = (*cinfo->mem->access_virt_barray)

-      ((j_common_ptr) cinfo, coef->whole_image[compptr->component_index],

-       cinfo->input_iMCU_row * compptr->v_samp_factor,

-       (JDIMENSION) compptr->v_samp_factor, TRUE);

-    /* Note: entropy decoder expects buffer to be zeroed,

-     * but this is handled automatically by the memory manager

-     * because we requested a pre-zeroed array.

-     */

-  }

-

-  /* Loop to process one whole iMCU row */

-  for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row;

-       yoffset++) {

-    for (MCU_col_num = coef->MCU_ctr; MCU_col_num < cinfo->MCUs_per_row;

-	 MCU_col_num++) {

-      /* Construct list of pointers to DCT blocks belonging to this MCU */

-      blkn = 0;			/* index of current DCT block within MCU */

-      for (ci = 0; ci < cinfo->comps_in_scan; ci++) {

-	compptr = cinfo->cur_comp_info[ci];

-	start_col = MCU_col_num * compptr->MCU_width;

-	for (yindex = 0; yindex < compptr->MCU_height; yindex++) {

-	  buffer_ptr = buffer[ci][yindex+yoffset] + start_col;

-	  for (xindex = 0; xindex < compptr->MCU_width; xindex++) {

-	    coef->MCU_buffer[blkn++] = buffer_ptr++;

-	  }

-	}

-      }

-      /* Try to fetch the MCU. */

-      if (! (*cinfo->entropy->decode_mcu) (cinfo, coef->MCU_buffer)) {

-	/* Suspension forced; update state counters and exit */

-	coef->MCU_vert_offset = yoffset;

-	coef->MCU_ctr = MCU_col_num;

-	return JPEG_SUSPENDED;

-      }

-    }

-    /* Completed an MCU row, but perhaps not an iMCU row */

-    coef->MCU_ctr = 0;

-  }

-  /* Completed the iMCU row, advance counters for next one */

-  if (++(cinfo->input_iMCU_row) < cinfo->total_iMCU_rows) {

-    start_iMCU_row(cinfo);

-    return JPEG_ROW_COMPLETED;

-  }

-  /* Completed the scan */

-  (*cinfo->inputctl->finish_input_pass) (cinfo);

-  return JPEG_SCAN_COMPLETED;

-}

-

-

-/*

- * Decompress and return some data in the multi-pass case.

- * Always attempts to emit one fully interleaved MCU row ("iMCU" row).

- * Return value is JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, or JPEG_SUSPENDED.

- *

- * NB: output_buf contains a plane for each component in image.

- */

-

-METHODDEF int

-decompress_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)

-{

-  my_coef_ptr coef = (my_coef_ptr) cinfo->coef;

-  JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1;

-  JDIMENSION block_num;

-  int ci, block_row, block_rows;

-  JBLOCKARRAY buffer;

-  JBLOCKROW buffer_ptr;

-  JSAMPARRAY output_ptr;

-  JDIMENSION output_col;

-  jpeg_component_info *compptr;

-  inverse_DCT_method_ptr inverse_DCT;

-

-  /* Force some input to be done if we are getting ahead of the input. */

-  while (cinfo->input_scan_number < cinfo->output_scan_number ||

-	 (cinfo->input_scan_number == cinfo->output_scan_number &&

-	  cinfo->input_iMCU_row <= cinfo->output_iMCU_row)) {

-    if ((*cinfo->inputctl->consume_input)(cinfo) == JPEG_SUSPENDED)

-      return JPEG_SUSPENDED;

-  }

-

-  /* OK, output from the virtual arrays. */

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    /* Don't bother to IDCT an uninteresting component. */

-    if (! compptr->component_needed)

-      continue;

-    /* Align the virtual buffer for this component. */

-    buffer = (*cinfo->mem->access_virt_barray)

-      ((j_common_ptr) cinfo, coef->whole_image[ci],

-       cinfo->output_iMCU_row * compptr->v_samp_factor,

-       (JDIMENSION) compptr->v_samp_factor, FALSE);

-    /* Count non-dummy DCT block rows in this iMCU row. */

-    if (cinfo->output_iMCU_row < last_iMCU_row)

-      block_rows = compptr->v_samp_factor;

-    else {

-      /* NB: can't use last_row_height here; it is input-side-dependent! */

-      block_rows = (int) (compptr->height_in_blocks % compptr->v_samp_factor);

-      if (block_rows == 0) block_rows = compptr->v_samp_factor;

-    }

-    inverse_DCT = cinfo->idct->inverse_DCT[ci];

-    output_ptr = output_buf[ci];

-    /* Loop over all DCT blocks to be processed. */

-    for (block_row = 0; block_row < block_rows; block_row++) {

-      buffer_ptr = buffer[block_row];

-      output_col = 0;

-      for (block_num = 0; block_num < compptr->width_in_blocks; block_num++) {

-	(*inverse_DCT) (cinfo, compptr, (JCOEFPTR) buffer_ptr,

-			output_ptr, output_col);

-	buffer_ptr++;

-	output_col += compptr->DCT_scaled_size;

-      }

-      output_ptr += compptr->DCT_scaled_size;

-    }

-  }

-

-  if (++(cinfo->output_iMCU_row) < cinfo->total_iMCU_rows)

-    return JPEG_ROW_COMPLETED;

-  return JPEG_SCAN_COMPLETED;

-}

-

-#endif /* D_MULTISCAN_FILES_SUPPORTED */

-

-

-#ifdef BLOCK_SMOOTHING_SUPPORTED

-

-/*

- * This code applies interblock smoothing as described by section K.8

- * of the JPEG standard: the first 5 AC coefficients are estimated from

- * the DC values of a DCT block and its 8 neighboring blocks.

- * We apply smoothing only for progressive JPEG decoding, and only if

- * the coefficients it can estimate are not yet known to full precision.

- */

-

-/*

- * Determine whether block smoothing is applicable and safe.

- * We also latch the current states of the coef_bits[] entries for the

- * AC coefficients; otherwise, if the input side of the decompressor

- * advances into a new scan, we might think the coefficients are known

- * more accurately than they really are.

- */

-

-LOCAL boolean

-smoothing_ok (j_decompress_ptr cinfo)

-{

-  my_coef_ptr coef = (my_coef_ptr) cinfo->coef;

-  boolean smoothing_useful = FALSE;

-  int ci, coefi;

-  jpeg_component_info *compptr;

-  JQUANT_TBL * qtable;

-  int * coef_bits;

-  int * coef_bits_latch;

-

-  if (! cinfo->progressive_mode || cinfo->coef_bits == NULL)

-    return FALSE;

-

-  /* Allocate latch area if not already done */

-  if (coef->coef_bits_latch == NULL)

-    coef->coef_bits_latch = (int *)

-      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				  cinfo->num_components *

-				  (SAVED_COEFS * SIZEOF(int)));

-  coef_bits_latch = coef->coef_bits_latch;

-

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    /* All components' quantization values must already be latched. */

-    if ((qtable = compptr->quant_table) == NULL)

-      return FALSE;

-    /* Verify DC & first 5 AC quantizers are nonzero to avoid zero-divide. */

-    for (coefi = 0; coefi <= 5; coefi++) {

-      if (qtable->quantval[coefi] == 0)

-	return FALSE;

-    }

-    /* DC values must be at least partly known for all components. */

-    coef_bits = cinfo->coef_bits[ci];

-    if (coef_bits[0] < 0)

-      return FALSE;

-    /* Block smoothing is helpful if some AC coefficients remain inaccurate. */

-    for (coefi = 1; coefi <= 5; coefi++) {

-      coef_bits_latch[coefi] = coef_bits[coefi];

-      if (coef_bits[coefi] != 0)

-	smoothing_useful = TRUE;

-    }

-    coef_bits_latch += SAVED_COEFS;

-  }

-

-  return smoothing_useful;

-}

-

-

-/*

- * Variant of decompress_data for use when doing block smoothing.

- */

-

-METHODDEF int

-decompress_smooth_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)

-{

-  my_coef_ptr coef = (my_coef_ptr) cinfo->coef;

-  JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1;

-  JDIMENSION block_num, last_block_column;

-  int ci, block_row, block_rows, access_rows;

-  JBLOCKARRAY buffer;

-  JBLOCKROW buffer_ptr, prev_block_row, next_block_row;

-  JSAMPARRAY output_ptr;

-  JDIMENSION output_col;

-  jpeg_component_info *compptr;

-  inverse_DCT_method_ptr inverse_DCT;

-  boolean first_row, last_row;

-  JBLOCK workspace;

-  int *coef_bits;

-  JQUANT_TBL *quanttbl;

-  INT32 Q00,Q01,Q02,Q10,Q11,Q20, num;

-  int DC1,DC2,DC3,DC4,DC5,DC6,DC7,DC8,DC9;

-  int Al, pred;

-

-  /* Force some input to be done if we are getting ahead of the input. */

-  while (cinfo->input_scan_number <= cinfo->output_scan_number &&

-	 ! cinfo->inputctl->eoi_reached) {

-    if (cinfo->input_scan_number == cinfo->output_scan_number) {

-      /* If input is working on current scan, we ordinarily want it to

-       * have completed the current row.  But if input scan is DC,

-       * we want it to keep one row ahead so that next block row's DC

-       * values are up to date.

-       */

-      JDIMENSION delta = (cinfo->Ss == 0) ? 1 : 0;

-      if (cinfo->input_iMCU_row > cinfo->output_iMCU_row+delta)

-	break;

-    }

-    if ((*cinfo->inputctl->consume_input)(cinfo) == JPEG_SUSPENDED)

-      return JPEG_SUSPENDED;

-  }

-

-  /* OK, output from the virtual arrays. */

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    /* Don't bother to IDCT an uninteresting component. */

-    if (! compptr->component_needed)

-      continue;

-    /* Count non-dummy DCT block rows in this iMCU row. */

-    if (cinfo->output_iMCU_row < last_iMCU_row) {

-      block_rows = compptr->v_samp_factor;

-      access_rows = block_rows * 2; /* this and next iMCU row */

-      last_row = FALSE;

-    } else {

-      /* NB: can't use last_row_height here; it is input-side-dependent! */

-      block_rows = (int) (compptr->height_in_blocks % compptr->v_samp_factor);

-      if (block_rows == 0) block_rows = compptr->v_samp_factor;

-      access_rows = block_rows; /* this iMCU row only */

-      last_row = TRUE;

-    }

-    /* Align the virtual buffer for this component. */

-    if (cinfo->output_iMCU_row > 0) {

-      access_rows += compptr->v_samp_factor; /* prior iMCU row too */

-      buffer = (*cinfo->mem->access_virt_barray)

-	((j_common_ptr) cinfo, coef->whole_image[ci],

-	 (cinfo->output_iMCU_row - 1) * compptr->v_samp_factor,

-	 (JDIMENSION) access_rows, FALSE);

-      buffer += compptr->v_samp_factor;	/* point to current iMCU row */

-      first_row = FALSE;

-    } else {

-      buffer = (*cinfo->mem->access_virt_barray)

-	((j_common_ptr) cinfo, coef->whole_image[ci],

-	 (JDIMENSION) 0, (JDIMENSION) access_rows, FALSE);

-      first_row = TRUE;

-    }

-    /* Fetch component-dependent info */

-    coef_bits = coef->coef_bits_latch + (ci * SAVED_COEFS);

-    quanttbl = compptr->quant_table;

-    Q00 = quanttbl->quantval[0];

-    Q01 = quanttbl->quantval[1];

-    Q10 = quanttbl->quantval[2];

-    Q20 = quanttbl->quantval[3];

-    Q11 = quanttbl->quantval[4];

-    Q02 = quanttbl->quantval[5];

-    inverse_DCT = cinfo->idct->inverse_DCT[ci];

-    output_ptr = output_buf[ci];

-    /* Loop over all DCT blocks to be processed. */

-    for (block_row = 0; block_row < block_rows; block_row++) {

-      buffer_ptr = buffer[block_row];

-      if (first_row && block_row == 0)

-	prev_block_row = buffer_ptr;

-      else

-	prev_block_row = buffer[block_row-1];

-      if (last_row && block_row == block_rows-1)

-	next_block_row = buffer_ptr;

-      else

-	next_block_row = buffer[block_row+1];

-      /* We fetch the surrounding DC values using a sliding-register approach.

-       * Initialize all nine here so as to do the right thing on narrow pics.

-       */

-      DC1 = DC2 = DC3 = (int) prev_block_row[0][0];

-      DC4 = DC5 = DC6 = (int) buffer_ptr[0][0];

-      DC7 = DC8 = DC9 = (int) next_block_row[0][0];

-      output_col = 0;

-      last_block_column = compptr->width_in_blocks - 1;

-      for (block_num = 0; block_num <= last_block_column; block_num++) {

-	/* Fetch current DCT block into workspace so we can modify it. */

-	jcopy_block_row(buffer_ptr, (JBLOCKROW) workspace, (JDIMENSION) 1);

-	/* Update DC values */

-	if (block_num < last_block_column) {

-	  DC3 = (int) prev_block_row[1][0];

-	  DC6 = (int) buffer_ptr[1][0];

-	  DC9 = (int) next_block_row[1][0];

-	}

-	/* Compute coefficient estimates per K.8.

-	 * An estimate is applied only if coefficient is still zero,

-	 * and is not known to be fully accurate.

-	 */

-	/* AC01 */

-	if ((Al=coef_bits[1]) != 0 && workspace[1] == 0) {

-	  num = 36 * Q00 * (DC4 - DC6);

-	  if (num >= 0) {

-	    pred = (int) (((Q01<<7) + num) / (Q01<<8));

-	    if (Al > 0 && pred >= (1<<Al))

-	      pred = (1<<Al)-1;

-	  } else {

-	    pred = (int) (((Q01<<7) - num) / (Q01<<8));

-	    if (Al > 0 && pred >= (1<<Al))

-	      pred = (1<<Al)-1;

-	    pred = -pred;

-	  }

-	  workspace[1] = (JCOEF) pred;

-	}

-	/* AC10 */

-	if ((Al=coef_bits[2]) != 0 && workspace[8] == 0) {

-	  num = 36 * Q00 * (DC2 - DC8);

-	  if (num >= 0) {

-	    pred = (int) (((Q10<<7) + num) / (Q10<<8));

-	    if (Al > 0 && pred >= (1<<Al))

-	      pred = (1<<Al)-1;

-	  } else {

-	    pred = (int) (((Q10<<7) - num) / (Q10<<8));

-	    if (Al > 0 && pred >= (1<<Al))

-	      pred = (1<<Al)-1;

-	    pred = -pred;

-	  }

-	  workspace[8] = (JCOEF) pred;

-	}

-	/* AC20 */

-	if ((Al=coef_bits[3]) != 0 && workspace[16] == 0) {

-	  num = 9 * Q00 * (DC2 + DC8 - 2*DC5);

-	  if (num >= 0) {

-	    pred = (int) (((Q20<<7) + num) / (Q20<<8));

-	    if (Al > 0 && pred >= (1<<Al))

-	      pred = (1<<Al)-1;

-	  } else {

-	    pred = (int) (((Q20<<7) - num) / (Q20<<8));

-	    if (Al > 0 && pred >= (1<<Al))

-	      pred = (1<<Al)-1;

-	    pred = -pred;

-	  }

-	  workspace[16] = (JCOEF) pred;

-	}

-	/* AC11 */

-	if ((Al=coef_bits[4]) != 0 && workspace[9] == 0) {

-	  num = 5 * Q00 * (DC1 - DC3 - DC7 + DC9);

-	  if (num >= 0) {

-	    pred = (int) (((Q11<<7) + num) / (Q11<<8));

-	    if (Al > 0 && pred >= (1<<Al))

-	      pred = (1<<Al)-1;

-	  } else {

-	    pred = (int) (((Q11<<7) - num) / (Q11<<8));

-	    if (Al > 0 && pred >= (1<<Al))

-	      pred = (1<<Al)-1;

-	    pred = -pred;

-	  }

-	  workspace[9] = (JCOEF) pred;

-	}

-	/* AC02 */

-	if ((Al=coef_bits[5]) != 0 && workspace[2] == 0) {

-	  num = 9 * Q00 * (DC4 + DC6 - 2*DC5);

-	  if (num >= 0) {

-	    pred = (int) (((Q02<<7) + num) / (Q02<<8));

-	    if (Al > 0 && pred >= (1<<Al))

-	      pred = (1<<Al)-1;

-	  } else {

-	    pred = (int) (((Q02<<7) - num) / (Q02<<8));

-	    if (Al > 0 && pred >= (1<<Al))

-	      pred = (1<<Al)-1;

-	    pred = -pred;

-	  }

-	  workspace[2] = (JCOEF) pred;

-	}

-	/* OK, do the IDCT */

-	(*inverse_DCT) (cinfo, compptr, (JCOEFPTR) workspace,

-			output_ptr, output_col);

-	/* Advance for next column */

-	DC1 = DC2; DC2 = DC3;

-	DC4 = DC5; DC5 = DC6;

-	DC7 = DC8; DC8 = DC9;

-	buffer_ptr++, prev_block_row++, next_block_row++;

-	output_col += compptr->DCT_scaled_size;

-      }

-      output_ptr += compptr->DCT_scaled_size;

-    }

-  }

-

-  if (++(cinfo->output_iMCU_row) < cinfo->total_iMCU_rows)

-    return JPEG_ROW_COMPLETED;

-  return JPEG_SCAN_COMPLETED;

-}

-

-#endif /* BLOCK_SMOOTHING_SUPPORTED */

-

-

-/*

- * Initialize coefficient buffer controller.

- */

-

-GLOBAL void

-jinit_d_coef_controller (j_decompress_ptr cinfo, boolean need_full_buffer)

-{

-  my_coef_ptr coef;

-

-  coef = (my_coef_ptr)

-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				SIZEOF(my_coef_controller));

-  cinfo->coef = (struct jpeg_d_coef_controller *) coef;

-  coef->pub.start_input_pass = start_input_pass;

-  coef->pub.start_output_pass = start_output_pass;

-#ifdef BLOCK_SMOOTHING_SUPPORTED

-  coef->coef_bits_latch = NULL;

-#endif

-

-  /* Create the coefficient buffer. */

-  if (need_full_buffer) {

-#ifdef D_MULTISCAN_FILES_SUPPORTED

-    /* Allocate a full-image virtual array for each component, */

-    /* padded to a multiple of samp_factor DCT blocks in each direction. */

-    /* Note we ask for a pre-zeroed array. */

-    int ci, access_rows;

-    jpeg_component_info *compptr;

-

-    for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-	 ci++, compptr++) {

-      access_rows = compptr->v_samp_factor;

-#ifdef BLOCK_SMOOTHING_SUPPORTED

-      /* If block smoothing could be used, need a bigger window */

-      if (cinfo->progressive_mode)

-	access_rows *= 3;

-#endif

-      coef->whole_image[ci] = (*cinfo->mem->request_virt_barray)

-	((j_common_ptr) cinfo, JPOOL_IMAGE, TRUE,

-	 (JDIMENSION) jround_up((long) compptr->width_in_blocks,

-				(long) compptr->h_samp_factor),

-	 (JDIMENSION) jround_up((long) compptr->height_in_blocks,

-				(long) compptr->v_samp_factor),

-	 (JDIMENSION) access_rows);

-    }

-    coef->pub.consume_data = consume_data;

-    coef->pub.decompress_data = decompress_data;

-    coef->pub.coef_arrays = coef->whole_image; /* link to virtual arrays */

-#else

-    ERREXIT(cinfo, JERR_NOT_COMPILED);

-#endif

-  } else {

-    /* We only need a single-MCU buffer. */

-    JBLOCKROW buffer;

-    int i;

-

-    buffer = (JBLOCKROW)

-      (*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				  D_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK));

-    for (i = 0; i < D_MAX_BLOCKS_IN_MCU; i++) {

-      coef->MCU_buffer[i] = buffer + i;

-    }

-    coef->pub.consume_data = dummy_consume_data;

-    coef->pub.decompress_data = decompress_onepass;

-    coef->pub.coef_arrays = NULL; /* flag for no virtual arrays */

-  }

-}

+/*
+ * jdcoefct.c
+ *
+ * Copyright (C) 1994-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains the coefficient buffer controller for decompression.
+ * This controller is the top level of the JPEG decompressor proper.
+ * The coefficient buffer lies between entropy decoding and inverse-DCT steps.
+ *
+ * In buffered-image mode, this controller is the interface between
+ * input-oriented processing and output-oriented processing.
+ * Also, the input side (only) is used when reading a file for transcoding.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+
+/* Block smoothing is only applicable for progressive JPEG, so: */
+#ifndef D_PROGRESSIVE_SUPPORTED
+#undef BLOCK_SMOOTHING_SUPPORTED
+#endif
+
+/* Private buffer controller object */
+
+typedef struct {
+  struct jpeg_d_coef_controller pub; /* public fields */
+
+  /* These variables keep track of the current location of the input side. */
+  /* cinfo->input_iMCU_row is also used for this. */
+  JDIMENSION MCU_ctr;		/* counts MCUs processed in current row */
+  int MCU_vert_offset;		/* counts MCU rows within iMCU row */
+  int MCU_rows_per_iMCU_row;	/* number of such rows needed */
+
+  /* The output side's location is represented by cinfo->output_iMCU_row. */
+
+  /* In single-pass modes, it's sufficient to buffer just one MCU.
+   * We allocate a workspace of D_MAX_BLOCKS_IN_MCU coefficient blocks,
+   * and let the entropy decoder write into that workspace each time.
+   * (On 80x86, the workspace is FAR even though it's not really very big;
+   * this is to keep the module interfaces unchanged when a large coefficient
+   * buffer is necessary.)
+   * In multi-pass modes, this array points to the current MCU's blocks
+   * within the virtual arrays; it is used only by the input side.
+   */
+  JBLOCKROW MCU_buffer[D_MAX_BLOCKS_IN_MCU];
+
+#ifdef D_MULTISCAN_FILES_SUPPORTED
+  /* In multi-pass modes, we need a virtual block array for each component. */
+  jvirt_barray_ptr whole_image[MAX_COMPONENTS];
+#endif
+
+#ifdef BLOCK_SMOOTHING_SUPPORTED
+  /* When doing block smoothing, we latch coefficient Al values here */
+  int * coef_bits_latch;
+#define SAVED_COEFS  6		/* we save coef_bits[0..5] */
+#endif
+} my_coef_controller;
+
+typedef my_coef_controller * my_coef_ptr;
+
+/* Forward declarations */
+METHODDEF int decompress_onepass
+	JPP((j_decompress_ptr cinfo, JSAMPIMAGE output_buf));
+#ifdef D_MULTISCAN_FILES_SUPPORTED
+METHODDEF int decompress_data
+	JPP((j_decompress_ptr cinfo, JSAMPIMAGE output_buf));
+#endif
+#ifdef BLOCK_SMOOTHING_SUPPORTED
+LOCAL boolean smoothing_ok JPP((j_decompress_ptr cinfo));
+METHODDEF int decompress_smooth_data
+	JPP((j_decompress_ptr cinfo, JSAMPIMAGE output_buf));
+#endif
+
+
+LOCAL void
+start_iMCU_row (j_decompress_ptr cinfo)
+/* Reset within-iMCU-row counters for a new row (input side) */
+{
+  my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
+
+  /* In an interleaved scan, an MCU row is the same as an iMCU row.
+   * In a noninterleaved scan, an iMCU row has v_samp_factor MCU rows.
+   * But at the bottom of the image, process only what's left.
+   */
+  if (cinfo->comps_in_scan > 1) {
+    coef->MCU_rows_per_iMCU_row = 1;
+  } else {
+    if (cinfo->input_iMCU_row < (cinfo->total_iMCU_rows-1))
+      coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->v_samp_factor;
+    else
+      coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->last_row_height;
+  }
+
+  coef->MCU_ctr = 0;
+  coef->MCU_vert_offset = 0;
+}
+
+
+/*
+ * Initialize for an input processing pass.
+ */
+
+METHODDEF void
+start_input_pass (j_decompress_ptr cinfo)
+{
+  cinfo->input_iMCU_row = 0;
+  start_iMCU_row(cinfo);
+}
+
+
+/*
+ * Initialize for an output processing pass.
+ */
+
+METHODDEF void
+start_output_pass (j_decompress_ptr cinfo)
+{
+#ifdef BLOCK_SMOOTHING_SUPPORTED
+  my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
+
+  /* If multipass, check to see whether to use block smoothing on this pass */
+  if (coef->pub.coef_arrays != NULL) {
+    if (cinfo->do_block_smoothing && smoothing_ok(cinfo))
+      coef->pub.decompress_data = decompress_smooth_data;
+    else
+      coef->pub.decompress_data = decompress_data;
+  }
+#endif
+  cinfo->output_iMCU_row = 0;
+}
+
+
+/*
+ * Decompress and return some data in the single-pass case.
+ * Always attempts to emit one fully interleaved MCU row ("iMCU" row).
+ * Input and output must run in lockstep since we have only a one-MCU buffer.
+ * Return value is JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, or JPEG_SUSPENDED.
+ *
+ * NB: output_buf contains a plane for each component in image.
+ * For single pass, this is the same as the components in the scan.
+ */
+
+METHODDEF int
+decompress_onepass (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
+{
+  my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
+  JDIMENSION MCU_col_num;	/* index of current MCU within row */
+  JDIMENSION last_MCU_col = cinfo->MCUs_per_row - 1;
+  JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1;
+  int blkn, ci, xindex, yindex, yoffset, useful_width;
+  JSAMPARRAY output_ptr;
+  JDIMENSION start_col, output_col;
+  jpeg_component_info *compptr;
+  inverse_DCT_method_ptr inverse_DCT;
+
+  /* Loop to process as much as one whole iMCU row */
+  for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row;
+       yoffset++) {
+    for (MCU_col_num = coef->MCU_ctr; MCU_col_num <= last_MCU_col;
+	 MCU_col_num++) {
+      /* Try to fetch an MCU.  Entropy decoder expects buffer to be zeroed. */
+      jzero_far((void FAR *) coef->MCU_buffer[0],
+		(size_t) (cinfo->blocks_in_MCU * SIZEOF(JBLOCK)));
+      if (! (*cinfo->entropy->decode_mcu) (cinfo, coef->MCU_buffer)) {
+	/* Suspension forced; update state counters and exit */
+	coef->MCU_vert_offset = yoffset;
+	coef->MCU_ctr = MCU_col_num;
+	return JPEG_SUSPENDED;
+      }
+      /* Determine where data should go in output_buf and do the IDCT thing.
+       * We skip dummy blocks at the right and bottom edges (but blkn gets
+       * incremented past them!).  Note the inner loop relies on having
+       * allocated the MCU_buffer[] blocks sequentially.
+       */
+      blkn = 0;			/* index of current DCT block within MCU */
+      for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
+	compptr = cinfo->cur_comp_info[ci];
+	/* Don't bother to IDCT an uninteresting component. */
+	if (! compptr->component_needed) {
+	  blkn += compptr->MCU_blocks;
+	  continue;
+	}
+	inverse_DCT = cinfo->idct->inverse_DCT[compptr->component_index];
+	useful_width = (MCU_col_num < last_MCU_col) ? compptr->MCU_width
+						    : compptr->last_col_width;
+	output_ptr = output_buf[ci] + yoffset * compptr->DCT_scaled_size;
+	start_col = MCU_col_num * compptr->MCU_sample_width;
+	for (yindex = 0; yindex < compptr->MCU_height; yindex++) {
+	  if (cinfo->input_iMCU_row < last_iMCU_row ||
+	      yoffset+yindex < compptr->last_row_height) {
+	    output_col = start_col;
+	    for (xindex = 0; xindex < useful_width; xindex++) {
+	      (*inverse_DCT) (cinfo, compptr,
+			      (JCOEFPTR) coef->MCU_buffer[blkn+xindex],
+			      output_ptr, output_col);
+	      output_col += compptr->DCT_scaled_size;
+	    }
+	  }
+	  blkn += compptr->MCU_width;
+	  output_ptr += compptr->DCT_scaled_size;
+	}
+      }
+    }
+    /* Completed an MCU row, but perhaps not an iMCU row */
+    coef->MCU_ctr = 0;
+  }
+  /* Completed the iMCU row, advance counters for next one */
+  cinfo->output_iMCU_row++;
+  if (++(cinfo->input_iMCU_row) < cinfo->total_iMCU_rows) {
+    start_iMCU_row(cinfo);
+    return JPEG_ROW_COMPLETED;
+  }
+  /* Completed the scan */
+  (*cinfo->inputctl->finish_input_pass) (cinfo);
+  return JPEG_SCAN_COMPLETED;
+}
+
+
+/*
+ * Dummy consume-input routine for single-pass operation.
+ */
+
+METHODDEF int
+dummy_consume_data (j_decompress_ptr cinfo)
+{
+  return JPEG_SUSPENDED;	/* Always indicate nothing was done */
+}
+
+
+#ifdef D_MULTISCAN_FILES_SUPPORTED
+
+/*
+ * Consume input data and store it in the full-image coefficient buffer.
+ * We read as much as one fully interleaved MCU row ("iMCU" row) per call,
+ * ie, v_samp_factor block rows for each component in the scan.
+ * Return value is JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, or JPEG_SUSPENDED.
+ */
+
+METHODDEF int
+consume_data (j_decompress_ptr cinfo)
+{
+  my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
+  JDIMENSION MCU_col_num;	/* index of current MCU within row */
+  int blkn, ci, xindex, yindex, yoffset;
+  JDIMENSION start_col;
+  JBLOCKARRAY buffer[MAX_COMPS_IN_SCAN];
+  JBLOCKROW buffer_ptr;
+  jpeg_component_info *compptr;
+
+  /* Align the virtual buffers for the components used in this scan. */
+  for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
+    compptr = cinfo->cur_comp_info[ci];
+    buffer[ci] = (*cinfo->mem->access_virt_barray)
+      ((j_common_ptr) cinfo, coef->whole_image[compptr->component_index],
+       cinfo->input_iMCU_row * compptr->v_samp_factor,
+       (JDIMENSION) compptr->v_samp_factor, TRUE);
+    /* Note: entropy decoder expects buffer to be zeroed,
+     * but this is handled automatically by the memory manager
+     * because we requested a pre-zeroed array.
+     */
+  }
+
+  /* Loop to process one whole iMCU row */
+  for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row;
+       yoffset++) {
+    for (MCU_col_num = coef->MCU_ctr; MCU_col_num < cinfo->MCUs_per_row;
+	 MCU_col_num++) {
+      /* Construct list of pointers to DCT blocks belonging to this MCU */
+      blkn = 0;			/* index of current DCT block within MCU */
+      for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
+	compptr = cinfo->cur_comp_info[ci];
+	start_col = MCU_col_num * compptr->MCU_width;
+	for (yindex = 0; yindex < compptr->MCU_height; yindex++) {
+	  buffer_ptr = buffer[ci][yindex+yoffset] + start_col;
+	  for (xindex = 0; xindex < compptr->MCU_width; xindex++) {
+	    coef->MCU_buffer[blkn++] = buffer_ptr++;
+	  }
+	}
+      }
+      /* Try to fetch the MCU. */
+      if (! (*cinfo->entropy->decode_mcu) (cinfo, coef->MCU_buffer)) {
+	/* Suspension forced; update state counters and exit */
+	coef->MCU_vert_offset = yoffset;
+	coef->MCU_ctr = MCU_col_num;
+	return JPEG_SUSPENDED;
+      }
+    }
+    /* Completed an MCU row, but perhaps not an iMCU row */
+    coef->MCU_ctr = 0;
+  }
+  /* Completed the iMCU row, advance counters for next one */
+  if (++(cinfo->input_iMCU_row) < cinfo->total_iMCU_rows) {
+    start_iMCU_row(cinfo);
+    return JPEG_ROW_COMPLETED;
+  }
+  /* Completed the scan */
+  (*cinfo->inputctl->finish_input_pass) (cinfo);
+  return JPEG_SCAN_COMPLETED;
+}
+
+
+/*
+ * Decompress and return some data in the multi-pass case.
+ * Always attempts to emit one fully interleaved MCU row ("iMCU" row).
+ * Return value is JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, or JPEG_SUSPENDED.
+ *
+ * NB: output_buf contains a plane for each component in image.
+ */
+
+METHODDEF int
+decompress_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
+{
+  my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
+  JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1;
+  JDIMENSION block_num;
+  int ci, block_row, block_rows;
+  JBLOCKARRAY buffer;
+  JBLOCKROW buffer_ptr;
+  JSAMPARRAY output_ptr;
+  JDIMENSION output_col;
+  jpeg_component_info *compptr;
+  inverse_DCT_method_ptr inverse_DCT;
+
+  /* Force some input to be done if we are getting ahead of the input. */
+  while (cinfo->input_scan_number < cinfo->output_scan_number ||
+	 (cinfo->input_scan_number == cinfo->output_scan_number &&
+	  cinfo->input_iMCU_row <= cinfo->output_iMCU_row)) {
+    if ((*cinfo->inputctl->consume_input)(cinfo) == JPEG_SUSPENDED)
+      return JPEG_SUSPENDED;
+  }
+
+  /* OK, output from the virtual arrays. */
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    /* Don't bother to IDCT an uninteresting component. */
+    if (! compptr->component_needed)
+      continue;
+    /* Align the virtual buffer for this component. */
+    buffer = (*cinfo->mem->access_virt_barray)
+      ((j_common_ptr) cinfo, coef->whole_image[ci],
+       cinfo->output_iMCU_row * compptr->v_samp_factor,
+       (JDIMENSION) compptr->v_samp_factor, FALSE);
+    /* Count non-dummy DCT block rows in this iMCU row. */
+    if (cinfo->output_iMCU_row < last_iMCU_row)
+      block_rows = compptr->v_samp_factor;
+    else {
+      /* NB: can't use last_row_height here; it is input-side-dependent! */
+      block_rows = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
+      if (block_rows == 0) block_rows = compptr->v_samp_factor;
+    }
+    inverse_DCT = cinfo->idct->inverse_DCT[ci];
+    output_ptr = output_buf[ci];
+    /* Loop over all DCT blocks to be processed. */
+    for (block_row = 0; block_row < block_rows; block_row++) {
+      buffer_ptr = buffer[block_row];
+      output_col = 0;
+      for (block_num = 0; block_num < compptr->width_in_blocks; block_num++) {
+	(*inverse_DCT) (cinfo, compptr, (JCOEFPTR) buffer_ptr,
+			output_ptr, output_col);
+	buffer_ptr++;
+	output_col += compptr->DCT_scaled_size;
+      }
+      output_ptr += compptr->DCT_scaled_size;
+    }
+  }
+
+  if (++(cinfo->output_iMCU_row) < cinfo->total_iMCU_rows)
+    return JPEG_ROW_COMPLETED;
+  return JPEG_SCAN_COMPLETED;
+}
+
+#endif /* D_MULTISCAN_FILES_SUPPORTED */
+
+
+#ifdef BLOCK_SMOOTHING_SUPPORTED
+
+/*
+ * This code applies interblock smoothing as described by section K.8
+ * of the JPEG standard: the first 5 AC coefficients are estimated from
+ * the DC values of a DCT block and its 8 neighboring blocks.
+ * We apply smoothing only for progressive JPEG decoding, and only if
+ * the coefficients it can estimate are not yet known to full precision.
+ */
+
+/*
+ * Determine whether block smoothing is applicable and safe.
+ * We also latch the current states of the coef_bits[] entries for the
+ * AC coefficients; otherwise, if the input side of the decompressor
+ * advances into a new scan, we might think the coefficients are known
+ * more accurately than they really are.
+ */
+
+LOCAL boolean
+smoothing_ok (j_decompress_ptr cinfo)
+{
+  my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
+  boolean smoothing_useful = FALSE;
+  int ci, coefi;
+  jpeg_component_info *compptr;
+  JQUANT_TBL * qtable;
+  int * coef_bits;
+  int * coef_bits_latch;
+
+  if (! cinfo->progressive_mode || cinfo->coef_bits == NULL)
+    return FALSE;
+
+  /* Allocate latch area if not already done */
+  if (coef->coef_bits_latch == NULL)
+    coef->coef_bits_latch = (int *)
+      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				  cinfo->num_components *
+				  (SAVED_COEFS * SIZEOF(int)));
+  coef_bits_latch = coef->coef_bits_latch;
+
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    /* All components' quantization values must already be latched. */
+    if ((qtable = compptr->quant_table) == NULL)
+      return FALSE;
+    /* Verify DC & first 5 AC quantizers are nonzero to avoid zero-divide. */
+    for (coefi = 0; coefi <= 5; coefi++) {
+      if (qtable->quantval[coefi] == 0)
+	return FALSE;
+    }
+    /* DC values must be at least partly known for all components. */
+    coef_bits = cinfo->coef_bits[ci];
+    if (coef_bits[0] < 0)
+      return FALSE;
+    /* Block smoothing is helpful if some AC coefficients remain inaccurate. */
+    for (coefi = 1; coefi <= 5; coefi++) {
+      coef_bits_latch[coefi] = coef_bits[coefi];
+      if (coef_bits[coefi] != 0)
+	smoothing_useful = TRUE;
+    }
+    coef_bits_latch += SAVED_COEFS;
+  }
+
+  return smoothing_useful;
+}
+
+
+/*
+ * Variant of decompress_data for use when doing block smoothing.
+ */
+
+METHODDEF int
+decompress_smooth_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf)
+{
+  my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
+  JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1;
+  JDIMENSION block_num, last_block_column;
+  int ci, block_row, block_rows, access_rows;
+  JBLOCKARRAY buffer;
+  JBLOCKROW buffer_ptr, prev_block_row, next_block_row;
+  JSAMPARRAY output_ptr;
+  JDIMENSION output_col;
+  jpeg_component_info *compptr;
+  inverse_DCT_method_ptr inverse_DCT;
+  boolean first_row, last_row;
+  JBLOCK workspace;
+  int *coef_bits;
+  JQUANT_TBL *quanttbl;
+  INT32 Q00,Q01,Q02,Q10,Q11,Q20, num;
+  int DC1,DC2,DC3,DC4,DC5,DC6,DC7,DC8,DC9;
+  int Al, pred;
+
+  /* Force some input to be done if we are getting ahead of the input. */
+  while (cinfo->input_scan_number <= cinfo->output_scan_number &&
+	 ! cinfo->inputctl->eoi_reached) {
+    if (cinfo->input_scan_number == cinfo->output_scan_number) {
+      /* If input is working on current scan, we ordinarily want it to
+       * have completed the current row.  But if input scan is DC,
+       * we want it to keep one row ahead so that next block row's DC
+       * values are up to date.
+       */
+      JDIMENSION delta = (cinfo->Ss == 0) ? 1 : 0;
+      if (cinfo->input_iMCU_row > cinfo->output_iMCU_row+delta)
+	break;
+    }
+    if ((*cinfo->inputctl->consume_input)(cinfo) == JPEG_SUSPENDED)
+      return JPEG_SUSPENDED;
+  }
+
+  /* OK, output from the virtual arrays. */
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    /* Don't bother to IDCT an uninteresting component. */
+    if (! compptr->component_needed)
+      continue;
+    /* Count non-dummy DCT block rows in this iMCU row. */
+    if (cinfo->output_iMCU_row < last_iMCU_row) {
+      block_rows = compptr->v_samp_factor;
+      access_rows = block_rows * 2; /* this and next iMCU row */
+      last_row = FALSE;
+    } else {
+      /* NB: can't use last_row_height here; it is input-side-dependent! */
+      block_rows = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
+      if (block_rows == 0) block_rows = compptr->v_samp_factor;
+      access_rows = block_rows; /* this iMCU row only */
+      last_row = TRUE;
+    }
+    /* Align the virtual buffer for this component. */
+    if (cinfo->output_iMCU_row > 0) {
+      access_rows += compptr->v_samp_factor; /* prior iMCU row too */
+      buffer = (*cinfo->mem->access_virt_barray)
+	((j_common_ptr) cinfo, coef->whole_image[ci],
+	 (cinfo->output_iMCU_row - 1) * compptr->v_samp_factor,
+	 (JDIMENSION) access_rows, FALSE);
+      buffer += compptr->v_samp_factor;	/* point to current iMCU row */
+      first_row = FALSE;
+    } else {
+      buffer = (*cinfo->mem->access_virt_barray)
+	((j_common_ptr) cinfo, coef->whole_image[ci],
+	 (JDIMENSION) 0, (JDIMENSION) access_rows, FALSE);
+      first_row = TRUE;
+    }
+    /* Fetch component-dependent info */
+    coef_bits = coef->coef_bits_latch + (ci * SAVED_COEFS);
+    quanttbl = compptr->quant_table;
+    Q00 = quanttbl->quantval[0];
+    Q01 = quanttbl->quantval[1];
+    Q10 = quanttbl->quantval[2];
+    Q20 = quanttbl->quantval[3];
+    Q11 = quanttbl->quantval[4];
+    Q02 = quanttbl->quantval[5];
+    inverse_DCT = cinfo->idct->inverse_DCT[ci];
+    output_ptr = output_buf[ci];
+    /* Loop over all DCT blocks to be processed. */
+    for (block_row = 0; block_row < block_rows; block_row++) {
+      buffer_ptr = buffer[block_row];
+      if (first_row && block_row == 0)
+	prev_block_row = buffer_ptr;
+      else
+	prev_block_row = buffer[block_row-1];
+      if (last_row && block_row == block_rows-1)
+	next_block_row = buffer_ptr;
+      else
+	next_block_row = buffer[block_row+1];
+      /* We fetch the surrounding DC values using a sliding-register approach.
+       * Initialize all nine here so as to do the right thing on narrow pics.
+       */
+      DC1 = DC2 = DC3 = (int) prev_block_row[0][0];
+      DC4 = DC5 = DC6 = (int) buffer_ptr[0][0];
+      DC7 = DC8 = DC9 = (int) next_block_row[0][0];
+      output_col = 0;
+      last_block_column = compptr->width_in_blocks - 1;
+      for (block_num = 0; block_num <= last_block_column; block_num++) {
+	/* Fetch current DCT block into workspace so we can modify it. */
+	jcopy_block_row(buffer_ptr, (JBLOCKROW) workspace, (JDIMENSION) 1);
+	/* Update DC values */
+	if (block_num < last_block_column) {
+	  DC3 = (int) prev_block_row[1][0];
+	  DC6 = (int) buffer_ptr[1][0];
+	  DC9 = (int) next_block_row[1][0];
+	}
+	/* Compute coefficient estimates per K.8.
+	 * An estimate is applied only if coefficient is still zero,
+	 * and is not known to be fully accurate.
+	 */
+	/* AC01 */
+	if ((Al=coef_bits[1]) != 0 && workspace[1] == 0) {
+	  num = 36 * Q00 * (DC4 - DC6);
+	  if (num >= 0) {
+	    pred = (int) (((Q01<<7) + num) / (Q01<<8));
+	    if (Al > 0 && pred >= (1<<Al))
+	      pred = (1<<Al)-1;
+	  } else {
+	    pred = (int) (((Q01<<7) - num) / (Q01<<8));
+	    if (Al > 0 && pred >= (1<<Al))
+	      pred = (1<<Al)-1;
+	    pred = -pred;
+	  }
+	  workspace[1] = (JCOEF) pred;
+	}
+	/* AC10 */
+	if ((Al=coef_bits[2]) != 0 && workspace[8] == 0) {
+	  num = 36 * Q00 * (DC2 - DC8);
+	  if (num >= 0) {
+	    pred = (int) (((Q10<<7) + num) / (Q10<<8));
+	    if (Al > 0 && pred >= (1<<Al))
+	      pred = (1<<Al)-1;
+	  } else {
+	    pred = (int) (((Q10<<7) - num) / (Q10<<8));
+	    if (Al > 0 && pred >= (1<<Al))
+	      pred = (1<<Al)-1;
+	    pred = -pred;
+	  }
+	  workspace[8] = (JCOEF) pred;
+	}
+	/* AC20 */
+	if ((Al=coef_bits[3]) != 0 && workspace[16] == 0) {
+	  num = 9 * Q00 * (DC2 + DC8 - 2*DC5);
+	  if (num >= 0) {
+	    pred = (int) (((Q20<<7) + num) / (Q20<<8));
+	    if (Al > 0 && pred >= (1<<Al))
+	      pred = (1<<Al)-1;
+	  } else {
+	    pred = (int) (((Q20<<7) - num) / (Q20<<8));
+	    if (Al > 0 && pred >= (1<<Al))
+	      pred = (1<<Al)-1;
+	    pred = -pred;
+	  }
+	  workspace[16] = (JCOEF) pred;
+	}
+	/* AC11 */
+	if ((Al=coef_bits[4]) != 0 && workspace[9] == 0) {
+	  num = 5 * Q00 * (DC1 - DC3 - DC7 + DC9);
+	  if (num >= 0) {
+	    pred = (int) (((Q11<<7) + num) / (Q11<<8));
+	    if (Al > 0 && pred >= (1<<Al))
+	      pred = (1<<Al)-1;
+	  } else {
+	    pred = (int) (((Q11<<7) - num) / (Q11<<8));
+	    if (Al > 0 && pred >= (1<<Al))
+	      pred = (1<<Al)-1;
+	    pred = -pred;
+	  }
+	  workspace[9] = (JCOEF) pred;
+	}
+	/* AC02 */
+	if ((Al=coef_bits[5]) != 0 && workspace[2] == 0) {
+	  num = 9 * Q00 * (DC4 + DC6 - 2*DC5);
+	  if (num >= 0) {
+	    pred = (int) (((Q02<<7) + num) / (Q02<<8));
+	    if (Al > 0 && pred >= (1<<Al))
+	      pred = (1<<Al)-1;
+	  } else {
+	    pred = (int) (((Q02<<7) - num) / (Q02<<8));
+	    if (Al > 0 && pred >= (1<<Al))
+	      pred = (1<<Al)-1;
+	    pred = -pred;
+	  }
+	  workspace[2] = (JCOEF) pred;
+	}
+	/* OK, do the IDCT */
+	(*inverse_DCT) (cinfo, compptr, (JCOEFPTR) workspace,
+			output_ptr, output_col);
+	/* Advance for next column */
+	DC1 = DC2; DC2 = DC3;
+	DC4 = DC5; DC5 = DC6;
+	DC7 = DC8; DC8 = DC9;
+	buffer_ptr++, prev_block_row++, next_block_row++;
+	output_col += compptr->DCT_scaled_size;
+      }
+      output_ptr += compptr->DCT_scaled_size;
+    }
+  }
+
+  if (++(cinfo->output_iMCU_row) < cinfo->total_iMCU_rows)
+    return JPEG_ROW_COMPLETED;
+  return JPEG_SCAN_COMPLETED;
+}
+
+#endif /* BLOCK_SMOOTHING_SUPPORTED */
+
+
+/*
+ * Initialize coefficient buffer controller.
+ */
+
+GLOBAL void
+jinit_d_coef_controller (j_decompress_ptr cinfo, boolean need_full_buffer)
+{
+  my_coef_ptr coef;
+
+  coef = (my_coef_ptr)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				SIZEOF(my_coef_controller));
+  cinfo->coef = (struct jpeg_d_coef_controller *) coef;
+  coef->pub.start_input_pass = start_input_pass;
+  coef->pub.start_output_pass = start_output_pass;
+#ifdef BLOCK_SMOOTHING_SUPPORTED
+  coef->coef_bits_latch = NULL;
+#endif
+
+  /* Create the coefficient buffer. */
+  if (need_full_buffer) {
+#ifdef D_MULTISCAN_FILES_SUPPORTED
+    /* Allocate a full-image virtual array for each component, */
+    /* padded to a multiple of samp_factor DCT blocks in each direction. */
+    /* Note we ask for a pre-zeroed array. */
+    int ci, access_rows;
+    jpeg_component_info *compptr;
+
+    for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+	 ci++, compptr++) {
+      access_rows = compptr->v_samp_factor;
+#ifdef BLOCK_SMOOTHING_SUPPORTED
+      /* If block smoothing could be used, need a bigger window */
+      if (cinfo->progressive_mode)
+	access_rows *= 3;
+#endif
+      coef->whole_image[ci] = (*cinfo->mem->request_virt_barray)
+	((j_common_ptr) cinfo, JPOOL_IMAGE, TRUE,
+	 (JDIMENSION) jround_up((long) compptr->width_in_blocks,
+				(long) compptr->h_samp_factor),
+	 (JDIMENSION) jround_up((long) compptr->height_in_blocks,
+				(long) compptr->v_samp_factor),
+	 (JDIMENSION) access_rows);
+    }
+    coef->pub.consume_data = consume_data;
+    coef->pub.decompress_data = decompress_data;
+    coef->pub.coef_arrays = coef->whole_image; /* link to virtual arrays */
+#else
+    ERREXIT(cinfo, JERR_NOT_COMPILED);
+#endif
+  } else {
+    /* We only need a single-MCU buffer. */
+    JBLOCKROW buffer;
+    int i;
+
+    buffer = (JBLOCKROW)
+      (*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				  D_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK));
+    for (i = 0; i < D_MAX_BLOCKS_IN_MCU; i++) {
+      coef->MCU_buffer[i] = buffer + i;
+    }
+    coef->pub.consume_data = dummy_consume_data;
+    coef->pub.decompress_data = decompress_onepass;
+    coef->pub.coef_arrays = NULL; /* flag for no virtual arrays */
+  }
+}
diff --git a/libs/jpeg6/jdcolor.cpp b/libs/jpeg6/jdcolor.cpp
index d360b53..b2bdf6e 100755
--- a/libs/jpeg6/jdcolor.cpp
+++ b/libs/jpeg6/jdcolor.cpp
@@ -1,367 +1,367 @@
-/*

- * jdcolor.c

- *

- * Copyright (C) 1991-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains output colorspace conversion routines.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-

-

-/* Private subobject */

-

-typedef struct {

-  struct jpeg_color_deconverter pub; /* public fields */

-

-  /* Private state for YCC->RGB conversion */

-  int * Cr_r_tab;		/* => table for Cr to R conversion */

-  int * Cb_b_tab;		/* => table for Cb to B conversion */

-  INT32 * Cr_g_tab;		/* => table for Cr to G conversion */

-  INT32 * Cb_g_tab;		/* => table for Cb to G conversion */

-} my_color_deconverter;

-

-typedef my_color_deconverter * my_cconvert_ptr;

-

-

-/**************** YCbCr -> RGB conversion: most common case **************/

-

-/*

- * YCbCr is defined per CCIR 601-1, except that Cb and Cr are

- * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5.

- * The conversion equations to be implemented are therefore

- *	R = Y                + 1.40200 * Cr

- *	G = Y - 0.34414 * Cb - 0.71414 * Cr

- *	B = Y + 1.77200 * Cb

- * where Cb and Cr represent the incoming values less CENTERJSAMPLE.

- * (These numbers are derived from TIFF 6.0 section 21, dated 3-June-92.)

- *

- * To avoid floating-point arithmetic, we represent the fractional constants

- * as integers scaled up by 2^16 (about 4 digits precision); we have to divide

- * the products by 2^16, with appropriate rounding, to get the correct answer.

- * Notice that Y, being an integral input, does not contribute any fraction

- * so it need not participate in the rounding.

- *

- * For even more speed, we avoid doing any multiplications in the inner loop

- * by precalculating the constants times Cb and Cr for all possible values.

- * For 8-bit JSAMPLEs this is very reasonable (only 256 entries per table);

- * for 12-bit samples it is still acceptable.  It's not very reasonable for

- * 16-bit samples, but if you want lossless storage you shouldn't be changing

- * colorspace anyway.

- * The Cr=>R and Cb=>B values can be rounded to integers in advance; the

- * values for the G calculation are left scaled up, since we must add them

- * together before rounding.

- */

-

-#define SCALEBITS	16	/* speediest right-shift on some machines */

-#define ONE_HALF	((INT32) 1 << (SCALEBITS-1))

-#define FIX(x)		((INT32) ((x) * (1L<<SCALEBITS) + 0.5))

-

-

-/*

- * Initialize tables for YCC->RGB colorspace conversion.

- */

-

-LOCAL void

-build_ycc_rgb_table (j_decompress_ptr cinfo)

-{

-  my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;

-  int i;

-  INT32 x;

-  SHIFT_TEMPS

-

-  cconvert->Cr_r_tab = (int *)

-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				(MAXJSAMPLE+1) * SIZEOF(int));

-  cconvert->Cb_b_tab = (int *)

-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				(MAXJSAMPLE+1) * SIZEOF(int));

-  cconvert->Cr_g_tab = (INT32 *)

-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				(MAXJSAMPLE+1) * SIZEOF(INT32));

-  cconvert->Cb_g_tab = (INT32 *)

-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				(MAXJSAMPLE+1) * SIZEOF(INT32));

-

-  for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) {

-    /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */

-    /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */

-    /* Cr=>R value is nearest int to 1.40200 * x */

-    cconvert->Cr_r_tab[i] = (int)

-		    RIGHT_SHIFT(FIX(1.40200) * x + ONE_HALF, SCALEBITS);

-    /* Cb=>B value is nearest int to 1.77200 * x */

-    cconvert->Cb_b_tab[i] = (int)

-		    RIGHT_SHIFT(FIX(1.77200) * x + ONE_HALF, SCALEBITS);

-    /* Cr=>G value is scaled-up -0.71414 * x */

-    cconvert->Cr_g_tab[i] = (- FIX(0.71414)) * x;

-    /* Cb=>G value is scaled-up -0.34414 * x */

-    /* We also add in ONE_HALF so that need not do it in inner loop */

-    cconvert->Cb_g_tab[i] = (- FIX(0.34414)) * x + ONE_HALF;

-  }

-}

-

-

-/*

- * Convert some rows of samples to the output colorspace.

- *

- * Note that we change from noninterleaved, one-plane-per-component format

- * to interleaved-pixel format.  The output buffer is therefore three times

- * as wide as the input buffer.

- * A starting row offset is provided only for the input buffer.  The caller

- * can easily adjust the passed output_buf value to accommodate any row

- * offset required on that side.

- */

-

-METHODDEF void

-ycc_rgb_convert (j_decompress_ptr cinfo,

-		 JSAMPIMAGE input_buf, JDIMENSION input_row,

-		 JSAMPARRAY output_buf, int num_rows)

-{

-  my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;

-  register int y, cb, cr;

-  register JSAMPROW outptr;

-  register JSAMPROW inptr0, inptr1, inptr2;

-  register JDIMENSION col;

-  JDIMENSION num_cols = cinfo->output_width;

-  /* copy these pointers into registers if possible */

-  register JSAMPLE * range_limit = cinfo->sample_range_limit;

-  register int * Crrtab = cconvert->Cr_r_tab;

-  register int * Cbbtab = cconvert->Cb_b_tab;

-  register INT32 * Crgtab = cconvert->Cr_g_tab;

-  register INT32 * Cbgtab = cconvert->Cb_g_tab;

-  SHIFT_TEMPS

-

-  while (--num_rows >= 0) {

-    inptr0 = input_buf[0][input_row];

-    inptr1 = input_buf[1][input_row];

-    inptr2 = input_buf[2][input_row];

-    input_row++;

-    outptr = *output_buf++;

-    for (col = 0; col < num_cols; col++) {

-      y  = GETJSAMPLE(inptr0[col]);

-      cb = GETJSAMPLE(inptr1[col]);

-      cr = GETJSAMPLE(inptr2[col]);

-      /* Range-limiting is essential due to noise introduced by DCT losses. */

-      outptr[RGB_RED] =   range_limit[y + Crrtab[cr]];

-      outptr[RGB_GREEN] = range_limit[y +

-			      ((int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr],

-						 SCALEBITS))];

-      outptr[RGB_BLUE] =  range_limit[y + Cbbtab[cb]];

-      outptr += RGB_PIXELSIZE;

-    }

-  }

-}

-

-

-/**************** Cases other than YCbCr -> RGB **************/

-

-

-/*

- * Color conversion for no colorspace change: just copy the data,

- * converting from separate-planes to interleaved representation.

- */

-

-METHODDEF void

-null_convert (j_decompress_ptr cinfo,

-	      JSAMPIMAGE input_buf, JDIMENSION input_row,

-	      JSAMPARRAY output_buf, int num_rows)

-{

-  register JSAMPROW inptr, outptr;

-  register JDIMENSION count;

-  register int num_components = cinfo->num_components;

-  JDIMENSION num_cols = cinfo->output_width;

-  int ci;

-

-  while (--num_rows >= 0) {

-    for (ci = 0; ci < num_components; ci++) {

-      inptr = input_buf[ci][input_row];

-      outptr = output_buf[0] + ci;

-      for (count = num_cols; count > 0; count--) {

-	*outptr = *inptr++;	/* needn't bother with GETJSAMPLE() here */

-	outptr += num_components;

-      }

-    }

-    input_row++;

-    output_buf++;

-  }

-}

-

-

-/*

- * Color conversion for grayscale: just copy the data.

- * This also works for YCbCr -> grayscale conversion, in which

- * we just copy the Y (luminance) component and ignore chrominance.

- */

-

-METHODDEF void

-grayscale_convert (j_decompress_ptr cinfo,

-		   JSAMPIMAGE input_buf, JDIMENSION input_row,

-		   JSAMPARRAY output_buf, int num_rows)

-{

-  jcopy_sample_rows(input_buf[0], (int) input_row, output_buf, 0,

-		    num_rows, cinfo->output_width);

-}

-

-

-/*

- * Adobe-style YCCK->CMYK conversion.

- * We convert YCbCr to R=1-C, G=1-M, and B=1-Y using the same

- * conversion as above, while passing K (black) unchanged.

- * We assume build_ycc_rgb_table has been called.

- */

-

-METHODDEF void

-ycck_cmyk_convert (j_decompress_ptr cinfo,

-		   JSAMPIMAGE input_buf, JDIMENSION input_row,

-		   JSAMPARRAY output_buf, int num_rows)

-{

-  my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;

-  register int y, cb, cr;

-  register JSAMPROW outptr;

-  register JSAMPROW inptr0, inptr1, inptr2, inptr3;

-  register JDIMENSION col;

-  JDIMENSION num_cols = cinfo->output_width;

-  /* copy these pointers into registers if possible */

-  register JSAMPLE * range_limit = cinfo->sample_range_limit;

-  register int * Crrtab = cconvert->Cr_r_tab;

-  register int * Cbbtab = cconvert->Cb_b_tab;

-  register INT32 * Crgtab = cconvert->Cr_g_tab;

-  register INT32 * Cbgtab = cconvert->Cb_g_tab;

-  SHIFT_TEMPS

-

-  while (--num_rows >= 0) {

-    inptr0 = input_buf[0][input_row];

-    inptr1 = input_buf[1][input_row];

-    inptr2 = input_buf[2][input_row];

-    inptr3 = input_buf[3][input_row];

-    input_row++;

-    outptr = *output_buf++;

-    for (col = 0; col < num_cols; col++) {

-      y  = GETJSAMPLE(inptr0[col]);

-      cb = GETJSAMPLE(inptr1[col]);

-      cr = GETJSAMPLE(inptr2[col]);

-      /* Range-limiting is essential due to noise introduced by DCT losses. */

-      outptr[0] = range_limit[MAXJSAMPLE - (y + Crrtab[cr])];	/* red */

-      outptr[1] = range_limit[MAXJSAMPLE - (y +			/* green */

-			      ((int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr],

-						 SCALEBITS)))];

-      outptr[2] = range_limit[MAXJSAMPLE - (y + Cbbtab[cb])];	/* blue */

-      /* K passes through unchanged */

-      outptr[3] = inptr3[col];	/* don't need GETJSAMPLE here */

-      outptr += 4;

-    }

-  }

-}

-

-

-/*

- * Empty method for start_pass.

- */

-

-METHODDEF void

-start_pass_dcolor (j_decompress_ptr cinfo)

-{

-  /* no work needed */

-}

-

-

-/*

- * Module initialization routine for output colorspace conversion.

- */

-

-GLOBAL void

-jinit_color_deconverter (j_decompress_ptr cinfo)

-{

-  my_cconvert_ptr cconvert;

-  int ci;

-

-  cconvert = (my_cconvert_ptr)

-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				SIZEOF(my_color_deconverter));

-  cinfo->cconvert = (struct jpeg_color_deconverter *) cconvert;

-  cconvert->pub.start_pass = start_pass_dcolor;

-

-  /* Make sure num_components agrees with jpeg_color_space */

-  switch (cinfo->jpeg_color_space) {

-  case JCS_GRAYSCALE:

-    if (cinfo->num_components != 1)

-      ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);

-    break;

-

-  case JCS_RGB:

-  case JCS_YCbCr:

-    if (cinfo->num_components != 3)

-      ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);

-    break;

-

-  case JCS_CMYK:

-  case JCS_YCCK:

-    if (cinfo->num_components != 4)

-      ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);

-    break;

-

-  default:			/* JCS_UNKNOWN can be anything */

-    if (cinfo->num_components < 1)

-      ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);

-    break;

-  }

-

-  /* Set out_color_components and conversion method based on requested space.

-   * Also clear the component_needed flags for any unused components,

-   * so that earlier pipeline stages can avoid useless computation.

-   */

-

-  switch (cinfo->out_color_space) {

-  case JCS_GRAYSCALE:

-    cinfo->out_color_components = 1;

-    if (cinfo->jpeg_color_space == JCS_GRAYSCALE ||

-	cinfo->jpeg_color_space == JCS_YCbCr) {

-      cconvert->pub.color_convert = grayscale_convert;

-      /* For color->grayscale conversion, only the Y (0) component is needed */

-      for (ci = 1; ci < cinfo->num_components; ci++)

-	cinfo->comp_info[ci].component_needed = FALSE;

-    } else

-      ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);

-    break;

-

-  case JCS_RGB:

-    cinfo->out_color_components = RGB_PIXELSIZE;

-    if (cinfo->jpeg_color_space == JCS_YCbCr) {

-      cconvert->pub.color_convert = ycc_rgb_convert;

-      build_ycc_rgb_table(cinfo);

-    } else if (cinfo->jpeg_color_space == JCS_RGB && RGB_PIXELSIZE == 3) {

-      cconvert->pub.color_convert = null_convert;

-    } else

-      ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);

-    break;

-

-  case JCS_CMYK:

-    cinfo->out_color_components = 4;

-    if (cinfo->jpeg_color_space == JCS_YCCK) {

-      cconvert->pub.color_convert = ycck_cmyk_convert;

-      build_ycc_rgb_table(cinfo);

-    } else if (cinfo->jpeg_color_space == JCS_CMYK) {

-      cconvert->pub.color_convert = null_convert;

-    } else

-      ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);

-    break;

-

-  default:

-    /* Permit null conversion to same output space */

-    if (cinfo->out_color_space == cinfo->jpeg_color_space) {

-      cinfo->out_color_components = cinfo->num_components;

-      cconvert->pub.color_convert = null_convert;

-    } else			/* unsupported non-null conversion */

-      ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);

-    break;

-  }

-

-  if (cinfo->quantize_colors)

-    cinfo->output_components = 1; /* single colormapped output component */

-  else

-    cinfo->output_components = cinfo->out_color_components;

-}

+/*
+ * jdcolor.c
+ *
+ * Copyright (C) 1991-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains output colorspace conversion routines.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+
+
+/* Private subobject */
+
+typedef struct {
+  struct jpeg_color_deconverter pub; /* public fields */
+
+  /* Private state for YCC->RGB conversion */
+  int * Cr_r_tab;		/* => table for Cr to R conversion */
+  int * Cb_b_tab;		/* => table for Cb to B conversion */
+  INT32 * Cr_g_tab;		/* => table for Cr to G conversion */
+  INT32 * Cb_g_tab;		/* => table for Cb to G conversion */
+} my_color_deconverter;
+
+typedef my_color_deconverter * my_cconvert_ptr;
+
+
+/**************** YCbCr -> RGB conversion: most common case **************/
+
+/*
+ * YCbCr is defined per CCIR 601-1, except that Cb and Cr are
+ * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5.
+ * The conversion equations to be implemented are therefore
+ *	R = Y                + 1.40200 * Cr
+ *	G = Y - 0.34414 * Cb - 0.71414 * Cr
+ *	B = Y + 1.77200 * Cb
+ * where Cb and Cr represent the incoming values less CENTERJSAMPLE.
+ * (These numbers are derived from TIFF 6.0 section 21, dated 3-June-92.)
+ *
+ * To avoid floating-point arithmetic, we represent the fractional constants
+ * as integers scaled up by 2^16 (about 4 digits precision); we have to divide
+ * the products by 2^16, with appropriate rounding, to get the correct answer.
+ * Notice that Y, being an integral input, does not contribute any fraction
+ * so it need not participate in the rounding.
+ *
+ * For even more speed, we avoid doing any multiplications in the inner loop
+ * by precalculating the constants times Cb and Cr for all possible values.
+ * For 8-bit JSAMPLEs this is very reasonable (only 256 entries per table);
+ * for 12-bit samples it is still acceptable.  It's not very reasonable for
+ * 16-bit samples, but if you want lossless storage you shouldn't be changing
+ * colorspace anyway.
+ * The Cr=>R and Cb=>B values can be rounded to integers in advance; the
+ * values for the G calculation are left scaled up, since we must add them
+ * together before rounding.
+ */
+
+#define SCALEBITS	16	/* speediest right-shift on some machines */
+#define ONE_HALF	((INT32) 1 << (SCALEBITS-1))
+#define FIX(x)		((INT32) ((x) * (1L<<SCALEBITS) + 0.5))
+
+
+/*
+ * Initialize tables for YCC->RGB colorspace conversion.
+ */
+
+LOCAL void
+build_ycc_rgb_table (j_decompress_ptr cinfo)
+{
+  my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
+  int i;
+  INT32 x;
+  SHIFT_TEMPS
+
+  cconvert->Cr_r_tab = (int *)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				(MAXJSAMPLE+1) * SIZEOF(int));
+  cconvert->Cb_b_tab = (int *)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				(MAXJSAMPLE+1) * SIZEOF(int));
+  cconvert->Cr_g_tab = (INT32 *)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				(MAXJSAMPLE+1) * SIZEOF(INT32));
+  cconvert->Cb_g_tab = (INT32 *)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				(MAXJSAMPLE+1) * SIZEOF(INT32));
+
+  for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) {
+    /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */
+    /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */
+    /* Cr=>R value is nearest int to 1.40200 * x */
+    cconvert->Cr_r_tab[i] = (int)
+		    RIGHT_SHIFT(FIX(1.40200) * x + ONE_HALF, SCALEBITS);
+    /* Cb=>B value is nearest int to 1.77200 * x */
+    cconvert->Cb_b_tab[i] = (int)
+		    RIGHT_SHIFT(FIX(1.77200) * x + ONE_HALF, SCALEBITS);
+    /* Cr=>G value is scaled-up -0.71414 * x */
+    cconvert->Cr_g_tab[i] = (- FIX(0.71414)) * x;
+    /* Cb=>G value is scaled-up -0.34414 * x */
+    /* We also add in ONE_HALF so that need not do it in inner loop */
+    cconvert->Cb_g_tab[i] = (- FIX(0.34414)) * x + ONE_HALF;
+  }
+}
+
+
+/*
+ * Convert some rows of samples to the output colorspace.
+ *
+ * Note that we change from noninterleaved, one-plane-per-component format
+ * to interleaved-pixel format.  The output buffer is therefore three times
+ * as wide as the input buffer.
+ * A starting row offset is provided only for the input buffer.  The caller
+ * can easily adjust the passed output_buf value to accommodate any row
+ * offset required on that side.
+ */
+
+METHODDEF void
+ycc_rgb_convert (j_decompress_ptr cinfo,
+		 JSAMPIMAGE input_buf, JDIMENSION input_row,
+		 JSAMPARRAY output_buf, int num_rows)
+{
+  my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
+  register int y, cb, cr;
+  register JSAMPROW outptr;
+  register JSAMPROW inptr0, inptr1, inptr2;
+  register JDIMENSION col;
+  JDIMENSION num_cols = cinfo->output_width;
+  /* copy these pointers into registers if possible */
+  register JSAMPLE * range_limit = cinfo->sample_range_limit;
+  register int * Crrtab = cconvert->Cr_r_tab;
+  register int * Cbbtab = cconvert->Cb_b_tab;
+  register INT32 * Crgtab = cconvert->Cr_g_tab;
+  register INT32 * Cbgtab = cconvert->Cb_g_tab;
+  SHIFT_TEMPS
+
+  while (--num_rows >= 0) {
+    inptr0 = input_buf[0][input_row];
+    inptr1 = input_buf[1][input_row];
+    inptr2 = input_buf[2][input_row];
+    input_row++;
+    outptr = *output_buf++;
+    for (col = 0; col < num_cols; col++) {
+      y  = GETJSAMPLE(inptr0[col]);
+      cb = GETJSAMPLE(inptr1[col]);
+      cr = GETJSAMPLE(inptr2[col]);
+      /* Range-limiting is essential due to noise introduced by DCT losses. */
+      outptr[RGB_RED] =   range_limit[y + Crrtab[cr]];
+      outptr[RGB_GREEN] = range_limit[y +
+			      ((int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr],
+						 SCALEBITS))];
+      outptr[RGB_BLUE] =  range_limit[y + Cbbtab[cb]];
+      outptr += RGB_PIXELSIZE;
+    }
+  }
+}
+
+
+/**************** Cases other than YCbCr -> RGB **************/
+
+
+/*
+ * Color conversion for no colorspace change: just copy the data,
+ * converting from separate-planes to interleaved representation.
+ */
+
+METHODDEF void
+null_convert (j_decompress_ptr cinfo,
+	      JSAMPIMAGE input_buf, JDIMENSION input_row,
+	      JSAMPARRAY output_buf, int num_rows)
+{
+  register JSAMPROW inptr, outptr;
+  register JDIMENSION count;
+  register int num_components = cinfo->num_components;
+  JDIMENSION num_cols = cinfo->output_width;
+  int ci;
+
+  while (--num_rows >= 0) {
+    for (ci = 0; ci < num_components; ci++) {
+      inptr = input_buf[ci][input_row];
+      outptr = output_buf[0] + ci;
+      for (count = num_cols; count > 0; count--) {
+	*outptr = *inptr++;	/* needn't bother with GETJSAMPLE() here */
+	outptr += num_components;
+      }
+    }
+    input_row++;
+    output_buf++;
+  }
+}
+
+
+/*
+ * Color conversion for grayscale: just copy the data.
+ * This also works for YCbCr -> grayscale conversion, in which
+ * we just copy the Y (luminance) component and ignore chrominance.
+ */
+
+METHODDEF void
+grayscale_convert (j_decompress_ptr cinfo,
+		   JSAMPIMAGE input_buf, JDIMENSION input_row,
+		   JSAMPARRAY output_buf, int num_rows)
+{
+  jcopy_sample_rows(input_buf[0], (int) input_row, output_buf, 0,
+		    num_rows, cinfo->output_width);
+}
+
+
+/*
+ * Adobe-style YCCK->CMYK conversion.
+ * We convert YCbCr to R=1-C, G=1-M, and B=1-Y using the same
+ * conversion as above, while passing K (black) unchanged.
+ * We assume build_ycc_rgb_table has been called.
+ */
+
+METHODDEF void
+ycck_cmyk_convert (j_decompress_ptr cinfo,
+		   JSAMPIMAGE input_buf, JDIMENSION input_row,
+		   JSAMPARRAY output_buf, int num_rows)
+{
+  my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
+  register int y, cb, cr;
+  register JSAMPROW outptr;
+  register JSAMPROW inptr0, inptr1, inptr2, inptr3;
+  register JDIMENSION col;
+  JDIMENSION num_cols = cinfo->output_width;
+  /* copy these pointers into registers if possible */
+  register JSAMPLE * range_limit = cinfo->sample_range_limit;
+  register int * Crrtab = cconvert->Cr_r_tab;
+  register int * Cbbtab = cconvert->Cb_b_tab;
+  register INT32 * Crgtab = cconvert->Cr_g_tab;
+  register INT32 * Cbgtab = cconvert->Cb_g_tab;
+  SHIFT_TEMPS
+
+  while (--num_rows >= 0) {
+    inptr0 = input_buf[0][input_row];
+    inptr1 = input_buf[1][input_row];
+    inptr2 = input_buf[2][input_row];
+    inptr3 = input_buf[3][input_row];
+    input_row++;
+    outptr = *output_buf++;
+    for (col = 0; col < num_cols; col++) {
+      y  = GETJSAMPLE(inptr0[col]);
+      cb = GETJSAMPLE(inptr1[col]);
+      cr = GETJSAMPLE(inptr2[col]);
+      /* Range-limiting is essential due to noise introduced by DCT losses. */
+      outptr[0] = range_limit[MAXJSAMPLE - (y + Crrtab[cr])];	/* red */
+      outptr[1] = range_limit[MAXJSAMPLE - (y +			/* green */
+			      ((int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr],
+						 SCALEBITS)))];
+      outptr[2] = range_limit[MAXJSAMPLE - (y + Cbbtab[cb])];	/* blue */
+      /* K passes through unchanged */
+      outptr[3] = inptr3[col];	/* don't need GETJSAMPLE here */
+      outptr += 4;
+    }
+  }
+}
+
+
+/*
+ * Empty method for start_pass.
+ */
+
+METHODDEF void
+start_pass_dcolor (j_decompress_ptr cinfo)
+{
+  /* no work needed */
+}
+
+
+/*
+ * Module initialization routine for output colorspace conversion.
+ */
+
+GLOBAL void
+jinit_color_deconverter (j_decompress_ptr cinfo)
+{
+  my_cconvert_ptr cconvert;
+  int ci;
+
+  cconvert = (my_cconvert_ptr)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				SIZEOF(my_color_deconverter));
+  cinfo->cconvert = (struct jpeg_color_deconverter *) cconvert;
+  cconvert->pub.start_pass = start_pass_dcolor;
+
+  /* Make sure num_components agrees with jpeg_color_space */
+  switch (cinfo->jpeg_color_space) {
+  case JCS_GRAYSCALE:
+    if (cinfo->num_components != 1)
+      ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
+    break;
+
+  case JCS_RGB:
+  case JCS_YCbCr:
+    if (cinfo->num_components != 3)
+      ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
+    break;
+
+  case JCS_CMYK:
+  case JCS_YCCK:
+    if (cinfo->num_components != 4)
+      ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
+    break;
+
+  default:			/* JCS_UNKNOWN can be anything */
+    if (cinfo->num_components < 1)
+      ERREXIT(cinfo, JERR_BAD_J_COLORSPACE);
+    break;
+  }
+
+  /* Set out_color_components and conversion method based on requested space.
+   * Also clear the component_needed flags for any unused components,
+   * so that earlier pipeline stages can avoid useless computation.
+   */
+
+  switch (cinfo->out_color_space) {
+  case JCS_GRAYSCALE:
+    cinfo->out_color_components = 1;
+    if (cinfo->jpeg_color_space == JCS_GRAYSCALE ||
+	cinfo->jpeg_color_space == JCS_YCbCr) {
+      cconvert->pub.color_convert = grayscale_convert;
+      /* For color->grayscale conversion, only the Y (0) component is needed */
+      for (ci = 1; ci < cinfo->num_components; ci++)
+	cinfo->comp_info[ci].component_needed = FALSE;
+    } else
+      ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+    break;
+
+  case JCS_RGB:
+    cinfo->out_color_components = RGB_PIXELSIZE;
+    if (cinfo->jpeg_color_space == JCS_YCbCr) {
+      cconvert->pub.color_convert = ycc_rgb_convert;
+      build_ycc_rgb_table(cinfo);
+    } else if (cinfo->jpeg_color_space == JCS_RGB && RGB_PIXELSIZE == 3) {
+      cconvert->pub.color_convert = null_convert;
+    } else
+      ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+    break;
+
+  case JCS_CMYK:
+    cinfo->out_color_components = 4;
+    if (cinfo->jpeg_color_space == JCS_YCCK) {
+      cconvert->pub.color_convert = ycck_cmyk_convert;
+      build_ycc_rgb_table(cinfo);
+    } else if (cinfo->jpeg_color_space == JCS_CMYK) {
+      cconvert->pub.color_convert = null_convert;
+    } else
+      ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+    break;
+
+  default:
+    /* Permit null conversion to same output space */
+    if (cinfo->out_color_space == cinfo->jpeg_color_space) {
+      cinfo->out_color_components = cinfo->num_components;
+      cconvert->pub.color_convert = null_convert;
+    } else			/* unsupported non-null conversion */
+      ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL);
+    break;
+  }
+
+  if (cinfo->quantize_colors)
+    cinfo->output_components = 1; /* single colormapped output component */
+  else
+    cinfo->output_components = cinfo->out_color_components;
+}
diff --git a/libs/jpeg6/jdct.h b/libs/jpeg6/jdct.h
index 1d66d4f..3ce790b 100755
--- a/libs/jpeg6/jdct.h
+++ b/libs/jpeg6/jdct.h
@@ -1,176 +1,176 @@
-/*

- * jdct.h

- *

- * Copyright (C) 1994, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This include file contains common declarations for the forward and

- * inverse DCT modules.  These declarations are private to the DCT managers

- * (jcdctmgr.c, jddctmgr.c) and the individual DCT algorithms.

- * The individual DCT algorithms are kept in separate files to ease 

- * machine-dependent tuning (e.g., assembly coding).

- */

-

-

-/*

- * A forward DCT routine is given a pointer to a work area of type DCTELEM[];

- * the DCT is to be performed in-place in that buffer.  Type DCTELEM is int

- * for 8-bit samples, INT32 for 12-bit samples.  (NOTE: Floating-point DCT

- * implementations use an array of type FAST_FLOAT, instead.)

- * The DCT inputs are expected to be signed (range +-CENTERJSAMPLE).

- * The DCT outputs are returned scaled up by a factor of 8; they therefore

- * have a range of +-8K for 8-bit data, +-128K for 12-bit data.  This

- * convention improves accuracy in integer implementations and saves some

- * work in floating-point ones.

- * Quantization of the output coefficients is done by jcdctmgr.c.

- */

-

-#if BITS_IN_JSAMPLE == 8

-typedef int DCTELEM;		/* 16 or 32 bits is fine */

-#else

-typedef INT32 DCTELEM;		/* must have 32 bits */

-#endif

-

-typedef JMETHOD(void, forward_DCT_method_ptr, (DCTELEM * data));

-typedef JMETHOD(void, float_DCT_method_ptr, (FAST_FLOAT * data));

-

-

-/*

- * An inverse DCT routine is given a pointer to the input JBLOCK and a pointer

- * to an output sample array.  The routine must dequantize the input data as

- * well as perform the IDCT; for dequantization, it uses the multiplier table

- * pointed to by compptr->dct_table.  The output data is to be placed into the

- * sample array starting at a specified column.  (Any row offset needed will

- * be applied to the array pointer before it is passed to the IDCT code.)

- * Note that the number of samples emitted by the IDCT routine is

- * DCT_scaled_size * DCT_scaled_size.

- */

-

-/* typedef inverse_DCT_method_ptr is declared in jpegint.h */

-

-/*

- * Each IDCT routine has its own ideas about the best dct_table element type.

- */

-

-typedef MULTIPLIER ISLOW_MULT_TYPE; /* short or int, whichever is faster */

-#if BITS_IN_JSAMPLE == 8

-typedef MULTIPLIER IFAST_MULT_TYPE; /* 16 bits is OK, use short if faster */

-#define IFAST_SCALE_BITS  2	/* fractional bits in scale factors */

-#else

-typedef INT32 IFAST_MULT_TYPE;	/* need 32 bits for scaled quantizers */

-#define IFAST_SCALE_BITS  13	/* fractional bits in scale factors */

-#endif

-typedef FAST_FLOAT FLOAT_MULT_TYPE; /* preferred floating type */

-

-

-/*

- * Each IDCT routine is responsible for range-limiting its results and

- * converting them to unsigned form (0..MAXJSAMPLE).  The raw outputs could

- * be quite far out of range if the input data is corrupt, so a bulletproof

- * range-limiting step is required.  We use a mask-and-table-lookup method

- * to do the combined operations quickly.  See the comments with

- * prepare_range_limit_table (in jdmaster.c) for more info.

- */

-

-#define IDCT_range_limit(cinfo)  ((cinfo)->sample_range_limit + CENTERJSAMPLE)

-

-#define RANGE_MASK  (MAXJSAMPLE * 4 + 3) /* 2 bits wider than legal samples */

-

-

-/* Short forms of external names for systems with brain-damaged linkers. */

-

-#ifdef NEED_SHORT_EXTERNAL_NAMES

-#define jpeg_fdct_islow		jFDislow

-#define jpeg_fdct_ifast		jFDifast

-#define jpeg_fdct_float		jFDfloat

-#define jpeg_idct_islow		jRDislow

-#define jpeg_idct_ifast		jRDifast

-#define jpeg_idct_float		jRDfloat

-#define jpeg_idct_4x4		jRD4x4

-#define jpeg_idct_2x2		jRD2x2

-#define jpeg_idct_1x1		jRD1x1

-#endif /* NEED_SHORT_EXTERNAL_NAMES */

-

-/* Extern declarations for the forward and inverse DCT routines. */

-

-EXTERN void jpeg_fdct_islow JPP((DCTELEM * data));

-EXTERN void jpeg_fdct_ifast JPP((DCTELEM * data));

-EXTERN void jpeg_fdct_float JPP((FAST_FLOAT * data));

-

-EXTERN void jpeg_idct_islow

-    JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,

-	 JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));

-EXTERN void jpeg_idct_ifast

-    JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,

-	 JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));

-EXTERN void jpeg_idct_float

-    JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,

-	 JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));

-EXTERN void jpeg_idct_4x4

-    JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,

-	 JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));

-EXTERN void jpeg_idct_2x2

-    JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,

-	 JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));

-EXTERN void jpeg_idct_1x1

-    JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,

-	 JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));

-

-

-/*

- * Macros for handling fixed-point arithmetic; these are used by many

- * but not all of the DCT/IDCT modules.

- *

- * All values are expected to be of type INT32.

- * Fractional constants are scaled left by CONST_BITS bits.

- * CONST_BITS is defined within each module using these macros,

- * and may differ from one module to the next.

- */

-

-#define ONE	((INT32) 1)

-#define CONST_SCALE (ONE << CONST_BITS)

-

-/* Convert a positive real constant to an integer scaled by CONST_SCALE.

- * Caution: some C compilers fail to reduce "FIX(constant)" at compile time,

- * thus causing a lot of useless floating-point operations at run time.

- */

-

-#define FIX(x)	((INT32) ((x) * CONST_SCALE + 0.5))

-

-/* Descale and correctly round an INT32 value that's scaled by N bits.

- * We assume RIGHT_SHIFT rounds towards minus infinity, so adding

- * the fudge factor is correct for either sign of X.

- */

-

-#define DESCALE(x,n)  RIGHT_SHIFT((x) + (ONE << ((n)-1)), n)

-

-/* Multiply an INT32 variable by an INT32 constant to yield an INT32 result.

- * This macro is used only when the two inputs will actually be no more than

- * 16 bits wide, so that a 16x16->32 bit multiply can be used instead of a

- * full 32x32 multiply.  This provides a useful speedup on many machines.

- * Unfortunately there is no way to specify a 16x16->32 multiply portably

- * in C, but some C compilers will do the right thing if you provide the

- * correct combination of casts.

- */

-

-#ifdef SHORTxSHORT_32		/* may work if 'int' is 32 bits */

-#define MULTIPLY16C16(var,const)  (((INT16) (var)) * ((INT16) (const)))

-#endif

-#ifdef SHORTxLCONST_32		/* known to work with Microsoft C 6.0 */

-#define MULTIPLY16C16(var,const)  (((INT16) (var)) * ((INT32) (const)))

-#endif

-

-#ifndef MULTIPLY16C16		/* default definition */

-#define MULTIPLY16C16(var,const)  ((var) * (const))

-#endif

-

-/* Same except both inputs are variables. */

-

-#ifdef SHORTxSHORT_32		/* may work if 'int' is 32 bits */

-#define MULTIPLY16V16(var1,var2)  (((INT16) (var1)) * ((INT16) (var2)))

-#endif

-

-#ifndef MULTIPLY16V16		/* default definition */

-#define MULTIPLY16V16(var1,var2)  ((var1) * (var2))

-#endif

+/*
+ * jdct.h
+ *
+ * Copyright (C) 1994, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This include file contains common declarations for the forward and
+ * inverse DCT modules.  These declarations are private to the DCT managers
+ * (jcdctmgr.c, jddctmgr.c) and the individual DCT algorithms.
+ * The individual DCT algorithms are kept in separate files to ease 
+ * machine-dependent tuning (e.g., assembly coding).
+ */
+
+
+/*
+ * A forward DCT routine is given a pointer to a work area of type DCTELEM[];
+ * the DCT is to be performed in-place in that buffer.  Type DCTELEM is int
+ * for 8-bit samples, INT32 for 12-bit samples.  (NOTE: Floating-point DCT
+ * implementations use an array of type FAST_FLOAT, instead.)
+ * The DCT inputs are expected to be signed (range +-CENTERJSAMPLE).
+ * The DCT outputs are returned scaled up by a factor of 8; they therefore
+ * have a range of +-8K for 8-bit data, +-128K for 12-bit data.  This
+ * convention improves accuracy in integer implementations and saves some
+ * work in floating-point ones.
+ * Quantization of the output coefficients is done by jcdctmgr.c.
+ */
+
+#if BITS_IN_JSAMPLE == 8
+typedef int DCTELEM;		/* 16 or 32 bits is fine */
+#else
+typedef INT32 DCTELEM;		/* must have 32 bits */
+#endif
+
+typedef JMETHOD(void, forward_DCT_method_ptr, (DCTELEM * data));
+typedef JMETHOD(void, float_DCT_method_ptr, (FAST_FLOAT * data));
+
+
+/*
+ * An inverse DCT routine is given a pointer to the input JBLOCK and a pointer
+ * to an output sample array.  The routine must dequantize the input data as
+ * well as perform the IDCT; for dequantization, it uses the multiplier table
+ * pointed to by compptr->dct_table.  The output data is to be placed into the
+ * sample array starting at a specified column.  (Any row offset needed will
+ * be applied to the array pointer before it is passed to the IDCT code.)
+ * Note that the number of samples emitted by the IDCT routine is
+ * DCT_scaled_size * DCT_scaled_size.
+ */
+
+/* typedef inverse_DCT_method_ptr is declared in jpegint.h */
+
+/*
+ * Each IDCT routine has its own ideas about the best dct_table element type.
+ */
+
+typedef MULTIPLIER ISLOW_MULT_TYPE; /* short or int, whichever is faster */
+#if BITS_IN_JSAMPLE == 8
+typedef MULTIPLIER IFAST_MULT_TYPE; /* 16 bits is OK, use short if faster */
+#define IFAST_SCALE_BITS  2	/* fractional bits in scale factors */
+#else
+typedef INT32 IFAST_MULT_TYPE;	/* need 32 bits for scaled quantizers */
+#define IFAST_SCALE_BITS  13	/* fractional bits in scale factors */
+#endif
+typedef FAST_FLOAT FLOAT_MULT_TYPE; /* preferred floating type */
+
+
+/*
+ * Each IDCT routine is responsible for range-limiting its results and
+ * converting them to unsigned form (0..MAXJSAMPLE).  The raw outputs could
+ * be quite far out of range if the input data is corrupt, so a bulletproof
+ * range-limiting step is required.  We use a mask-and-table-lookup method
+ * to do the combined operations quickly.  See the comments with
+ * prepare_range_limit_table (in jdmaster.c) for more info.
+ */
+
+#define IDCT_range_limit(cinfo)  ((cinfo)->sample_range_limit + CENTERJSAMPLE)
+
+#define RANGE_MASK  (MAXJSAMPLE * 4 + 3) /* 2 bits wider than legal samples */
+
+
+/* Short forms of external names for systems with brain-damaged linkers. */
+
+#ifdef NEED_SHORT_EXTERNAL_NAMES
+#define jpeg_fdct_islow		jFDislow
+#define jpeg_fdct_ifast		jFDifast
+#define jpeg_fdct_float		jFDfloat
+#define jpeg_idct_islow		jRDislow
+#define jpeg_idct_ifast		jRDifast
+#define jpeg_idct_float		jRDfloat
+#define jpeg_idct_4x4		jRD4x4
+#define jpeg_idct_2x2		jRD2x2
+#define jpeg_idct_1x1		jRD1x1
+#endif /* NEED_SHORT_EXTERNAL_NAMES */
+
+/* Extern declarations for the forward and inverse DCT routines. */
+
+EXTERN void jpeg_fdct_islow JPP((DCTELEM * data));
+EXTERN void jpeg_fdct_ifast JPP((DCTELEM * data));
+EXTERN void jpeg_fdct_float JPP((FAST_FLOAT * data));
+
+EXTERN void jpeg_idct_islow
+    JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
+	 JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
+EXTERN void jpeg_idct_ifast
+    JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
+	 JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
+EXTERN void jpeg_idct_float
+    JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
+	 JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
+EXTERN void jpeg_idct_4x4
+    JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
+	 JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
+EXTERN void jpeg_idct_2x2
+    JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
+	 JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
+EXTERN void jpeg_idct_1x1
+    JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr,
+	 JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col));
+
+
+/*
+ * Macros for handling fixed-point arithmetic; these are used by many
+ * but not all of the DCT/IDCT modules.
+ *
+ * All values are expected to be of type INT32.
+ * Fractional constants are scaled left by CONST_BITS bits.
+ * CONST_BITS is defined within each module using these macros,
+ * and may differ from one module to the next.
+ */
+
+#define ONE	((INT32) 1)
+#define CONST_SCALE (ONE << CONST_BITS)
+
+/* Convert a positive real constant to an integer scaled by CONST_SCALE.
+ * Caution: some C compilers fail to reduce "FIX(constant)" at compile time,
+ * thus causing a lot of useless floating-point operations at run time.
+ */
+
+#define FIX(x)	((INT32) ((x) * CONST_SCALE + 0.5))
+
+/* Descale and correctly round an INT32 value that's scaled by N bits.
+ * We assume RIGHT_SHIFT rounds towards minus infinity, so adding
+ * the fudge factor is correct for either sign of X.
+ */
+
+#define DESCALE(x,n)  RIGHT_SHIFT((x) + (ONE << ((n)-1)), n)
+
+/* Multiply an INT32 variable by an INT32 constant to yield an INT32 result.
+ * This macro is used only when the two inputs will actually be no more than
+ * 16 bits wide, so that a 16x16->32 bit multiply can be used instead of a
+ * full 32x32 multiply.  This provides a useful speedup on many machines.
+ * Unfortunately there is no way to specify a 16x16->32 multiply portably
+ * in C, but some C compilers will do the right thing if you provide the
+ * correct combination of casts.
+ */
+
+#ifdef SHORTxSHORT_32		/* may work if 'int' is 32 bits */
+#define MULTIPLY16C16(var,const)  (((INT16) (var)) * ((INT16) (const)))
+#endif
+#ifdef SHORTxLCONST_32		/* known to work with Microsoft C 6.0 */
+#define MULTIPLY16C16(var,const)  (((INT16) (var)) * ((INT32) (const)))
+#endif
+
+#ifndef MULTIPLY16C16		/* default definition */
+#define MULTIPLY16C16(var,const)  ((var) * (const))
+#endif
+
+/* Same except both inputs are variables. */
+
+#ifdef SHORTxSHORT_32		/* may work if 'int' is 32 bits */
+#define MULTIPLY16V16(var1,var2)  (((INT16) (var1)) * ((INT16) (var2)))
+#endif
+
+#ifndef MULTIPLY16V16		/* default definition */
+#define MULTIPLY16V16(var1,var2)  ((var1) * (var2))
+#endif
diff --git a/libs/jpeg6/jddctmgr.cpp b/libs/jpeg6/jddctmgr.cpp
index ba01fc6..71215f1 100755
--- a/libs/jpeg6/jddctmgr.cpp
+++ b/libs/jpeg6/jddctmgr.cpp
@@ -1,270 +1,270 @@
-/*

- * jddctmgr.c

- *

- * Copyright (C) 1994-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains the inverse-DCT management logic.

- * This code selects a particular IDCT implementation to be used,

- * and it performs related housekeeping chores.  No code in this file

- * is executed per IDCT step, only during output pass setup.

- *

- * Note that the IDCT routines are responsible for performing coefficient

- * dequantization as well as the IDCT proper.  This module sets up the

- * dequantization multiplier table needed by the IDCT routine.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-#include "jdct.h"		/* Private declarations for DCT subsystem */

-

-

-/*

- * The decompressor input side (jdinput.c) saves away the appropriate

- * quantization table for each component at the start of the first scan

- * involving that component.  (This is necessary in order to correctly

- * decode files that reuse Q-table slots.)

- * When we are ready to make an output pass, the saved Q-table is converted

- * to a multiplier table that will actually be used by the IDCT routine.

- * The multiplier table contents are IDCT-method-dependent.  To support

- * application changes in IDCT method between scans, we can remake the

- * multiplier tables if necessary.

- * In buffered-image mode, the first output pass may occur before any data

- * has been seen for some components, and thus before their Q-tables have

- * been saved away.  To handle this case, multiplier tables are preset

- * to zeroes; the result of the IDCT will be a neutral gray level.

- */

-

-

-/* Private subobject for this module */

-

-typedef struct {

-  struct jpeg_inverse_dct pub;	/* public fields */

-

-  /* This array contains the IDCT method code that each multiplier table

-   * is currently set up for, or -1 if it's not yet set up.

-   * The actual multiplier tables are pointed to by dct_table in the

-   * per-component comp_info structures.

-   */

-  int cur_method[MAX_COMPONENTS];

-} my_idct_controller;

-

-typedef my_idct_controller * my_idct_ptr;

-

-

-/* Allocated multiplier tables: big enough for any supported variant */

-

-typedef union {

-  ISLOW_MULT_TYPE islow_array[DCTSIZE2];

-#ifdef DCT_IFAST_SUPPORTED

-  IFAST_MULT_TYPE ifast_array[DCTSIZE2];

-#endif

-#ifdef DCT_FLOAT_SUPPORTED

-  FLOAT_MULT_TYPE float_array[DCTSIZE2];

-#endif

-} multiplier_table;

-

-

-/* The current scaled-IDCT routines require ISLOW-style multiplier tables,

- * so be sure to compile that code if either ISLOW or SCALING is requested.

- */

-#ifdef DCT_ISLOW_SUPPORTED

-#define PROVIDE_ISLOW_TABLES

-#else

-#ifdef IDCT_SCALING_SUPPORTED

-#define PROVIDE_ISLOW_TABLES

-#endif

-#endif

-

-

-/*

- * Prepare for an output pass.

- * Here we select the proper IDCT routine for each component and build

- * a matching multiplier table.

- */

-

-METHODDEF void

-start_pass (j_decompress_ptr cinfo)

-{

-  my_idct_ptr idct = (my_idct_ptr) cinfo->idct;

-  int ci, i;

-  jpeg_component_info *compptr;

-  int method = 0;

-  inverse_DCT_method_ptr method_ptr = NULL;

-  JQUANT_TBL * qtbl;

-

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    /* Select the proper IDCT routine for this component's scaling */

-    switch (compptr->DCT_scaled_size) {

-#ifdef IDCT_SCALING_SUPPORTED

-    case 1:

-      method_ptr = jpeg_idct_1x1;

-      method = JDCT_ISLOW;	/* jidctred uses islow-style table */

-      break;

-    case 2:

-      method_ptr = jpeg_idct_2x2;

-      method = JDCT_ISLOW;	/* jidctred uses islow-style table */

-      break;

-    case 4:

-      method_ptr = jpeg_idct_4x4;

-      method = JDCT_ISLOW;	/* jidctred uses islow-style table */

-      break;

-#endif

-    case DCTSIZE:

-      switch (cinfo->dct_method) {

-#ifdef DCT_ISLOW_SUPPORTED

-      case JDCT_ISLOW:

-	method_ptr = jpeg_idct_islow;

-	method = JDCT_ISLOW;

-	break;

-#endif

-#ifdef DCT_IFAST_SUPPORTED

-      case JDCT_IFAST:

-	method_ptr = jpeg_idct_ifast;

-	method = JDCT_IFAST;

-	break;

-#endif

-#ifdef DCT_FLOAT_SUPPORTED

-      case JDCT_FLOAT:

-	method_ptr = jpeg_idct_float;

-	method = JDCT_FLOAT;

-	break;

-#endif

-      default:

-	ERREXIT(cinfo, JERR_NOT_COMPILED);

-	break;

-      }

-      break;

-    default:

-      ERREXIT1(cinfo, JERR_BAD_DCTSIZE, compptr->DCT_scaled_size);

-      break;

-    }

-    idct->pub.inverse_DCT[ci] = method_ptr;

-    /* Create multiplier table from quant table.

-     * However, we can skip this if the component is uninteresting

-     * or if we already built the table.  Also, if no quant table

-     * has yet been saved for the component, we leave the

-     * multiplier table all-zero; we'll be reading zeroes from the

-     * coefficient controller's buffer anyway.

-     */

-    if (! compptr->component_needed || idct->cur_method[ci] == method)

-      continue;

-    qtbl = compptr->quant_table;

-    if (qtbl == NULL)		/* happens if no data yet for component */

-      continue;

-    idct->cur_method[ci] = method;

-    switch (method) {

-#ifdef PROVIDE_ISLOW_TABLES

-    case JDCT_ISLOW:

-      {

-	/* For LL&M IDCT method, multipliers are equal to raw quantization

-	 * coefficients, but are stored in natural order as ints.

-	 */

-	ISLOW_MULT_TYPE * ismtbl = (ISLOW_MULT_TYPE *) compptr->dct_table;

-	for (i = 0; i < DCTSIZE2; i++) {

-	  ismtbl[i] = (ISLOW_MULT_TYPE) qtbl->quantval[jpeg_zigzag_order[i]];

-	}

-      }

-      break;

-#endif

-#ifdef DCT_IFAST_SUPPORTED

-    case JDCT_IFAST:

-      {

-	/* For AA&N IDCT method, multipliers are equal to quantization

-	 * coefficients scaled by scalefactor[row]*scalefactor[col], where

-	 *   scalefactor[0] = 1

-	 *   scalefactor[k] = cos(k*PI/16) * sqrt(2)    for k=1..7

-	 * For integer operation, the multiplier table is to be scaled by

-	 * IFAST_SCALE_BITS.  The multipliers are stored in natural order.

-	 */

-	IFAST_MULT_TYPE * ifmtbl = (IFAST_MULT_TYPE *) compptr->dct_table;

-#define CONST_BITS 14

-	static const INT16 aanscales[DCTSIZE2] = {

-	  /* precomputed values scaled up by 14 bits */

-	  16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,

-	  22725, 31521, 29692, 26722, 22725, 17855, 12299,  6270,

-	  21407, 29692, 27969, 25172, 21407, 16819, 11585,  5906,

-	  19266, 26722, 25172, 22654, 19266, 15137, 10426,  5315,

-	  16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,

-	  12873, 17855, 16819, 15137, 12873, 10114,  6967,  3552,

-	   8867, 12299, 11585, 10426,  8867,  6967,  4799,  2446,

-	   4520,  6270,  5906,  5315,  4520,  3552,  2446,  1247

-	};

-	SHIFT_TEMPS

-

-	for (i = 0; i < DCTSIZE2; i++) {

-	  ifmtbl[i] = (IFAST_MULT_TYPE)

-	    DESCALE(MULTIPLY16V16((INT32) qtbl->quantval[jpeg_zigzag_order[i]],

-				  (INT32) aanscales[i]),

-		    CONST_BITS-IFAST_SCALE_BITS);

-	}

-      }

-      break;

-#endif

-#ifdef DCT_FLOAT_SUPPORTED

-    case JDCT_FLOAT:

-      {

-	/* For float AA&N IDCT method, multipliers are equal to quantization

-	 * coefficients scaled by scalefactor[row]*scalefactor[col], where

-	 *   scalefactor[0] = 1

-	 *   scalefactor[k] = cos(k*PI/16) * sqrt(2)    for k=1..7

-	 * The multipliers are stored in natural order.

-	 */

-	FLOAT_MULT_TYPE * fmtbl = (FLOAT_MULT_TYPE *) compptr->dct_table;

-	int row, col;

-	static const double aanscalefactor[DCTSIZE] = {

-	  1.0, 1.387039845, 1.306562965, 1.175875602,

-	  1.0, 0.785694958, 0.541196100, 0.275899379

-	};

-

-	i = 0;

-	for (row = 0; row < DCTSIZE; row++) {

-	  for (col = 0; col < DCTSIZE; col++) {

-	    fmtbl[i] = (FLOAT_MULT_TYPE)

-	      ((double) qtbl->quantval[jpeg_zigzag_order[i]] *

-	       aanscalefactor[row] * aanscalefactor[col]);

-	    i++;

-	  }

-	}

-      }

-      break;

-#endif

-    default:

-      ERREXIT(cinfo, JERR_NOT_COMPILED);

-      break;

-    }

-  }

-}

-

-

-/*

- * Initialize IDCT manager.

- */

-

-GLOBAL void

-jinit_inverse_dct (j_decompress_ptr cinfo)

-{

-  my_idct_ptr idct;

-  int ci;

-  jpeg_component_info *compptr;

-

-  idct = (my_idct_ptr)

-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				SIZEOF(my_idct_controller));

-  cinfo->idct = (struct jpeg_inverse_dct *) idct;

-  idct->pub.start_pass = start_pass;

-

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    /* Allocate and pre-zero a multiplier table for each component */

-    compptr->dct_table =

-      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				  SIZEOF(multiplier_table));

-    MEMZERO(compptr->dct_table, SIZEOF(multiplier_table));

-    /* Mark multiplier table not yet set up for any method */

-    idct->cur_method[ci] = -1;

-  }

-}

+/*
+ * jddctmgr.c
+ *
+ * Copyright (C) 1994-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains the inverse-DCT management logic.
+ * This code selects a particular IDCT implementation to be used,
+ * and it performs related housekeeping chores.  No code in this file
+ * is executed per IDCT step, only during output pass setup.
+ *
+ * Note that the IDCT routines are responsible for performing coefficient
+ * dequantization as well as the IDCT proper.  This module sets up the
+ * dequantization multiplier table needed by the IDCT routine.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+#include "jdct.h"		/* Private declarations for DCT subsystem */
+
+
+/*
+ * The decompressor input side (jdinput.c) saves away the appropriate
+ * quantization table for each component at the start of the first scan
+ * involving that component.  (This is necessary in order to correctly
+ * decode files that reuse Q-table slots.)
+ * When we are ready to make an output pass, the saved Q-table is converted
+ * to a multiplier table that will actually be used by the IDCT routine.
+ * The multiplier table contents are IDCT-method-dependent.  To support
+ * application changes in IDCT method between scans, we can remake the
+ * multiplier tables if necessary.
+ * In buffered-image mode, the first output pass may occur before any data
+ * has been seen for some components, and thus before their Q-tables have
+ * been saved away.  To handle this case, multiplier tables are preset
+ * to zeroes; the result of the IDCT will be a neutral gray level.
+ */
+
+
+/* Private subobject for this module */
+
+typedef struct {
+  struct jpeg_inverse_dct pub;	/* public fields */
+
+  /* This array contains the IDCT method code that each multiplier table
+   * is currently set up for, or -1 if it's not yet set up.
+   * The actual multiplier tables are pointed to by dct_table in the
+   * per-component comp_info structures.
+   */
+  int cur_method[MAX_COMPONENTS];
+} my_idct_controller;
+
+typedef my_idct_controller * my_idct_ptr;
+
+
+/* Allocated multiplier tables: big enough for any supported variant */
+
+typedef union {
+  ISLOW_MULT_TYPE islow_array[DCTSIZE2];
+#ifdef DCT_IFAST_SUPPORTED
+  IFAST_MULT_TYPE ifast_array[DCTSIZE2];
+#endif
+#ifdef DCT_FLOAT_SUPPORTED
+  FLOAT_MULT_TYPE float_array[DCTSIZE2];
+#endif
+} multiplier_table;
+
+
+/* The current scaled-IDCT routines require ISLOW-style multiplier tables,
+ * so be sure to compile that code if either ISLOW or SCALING is requested.
+ */
+#ifdef DCT_ISLOW_SUPPORTED
+#define PROVIDE_ISLOW_TABLES
+#else
+#ifdef IDCT_SCALING_SUPPORTED
+#define PROVIDE_ISLOW_TABLES
+#endif
+#endif
+
+
+/*
+ * Prepare for an output pass.
+ * Here we select the proper IDCT routine for each component and build
+ * a matching multiplier table.
+ */
+
+METHODDEF void
+start_pass (j_decompress_ptr cinfo)
+{
+  my_idct_ptr idct = (my_idct_ptr) cinfo->idct;
+  int ci, i;
+  jpeg_component_info *compptr;
+  int method = 0;
+  inverse_DCT_method_ptr method_ptr = NULL;
+  JQUANT_TBL * qtbl;
+
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    /* Select the proper IDCT routine for this component's scaling */
+    switch (compptr->DCT_scaled_size) {
+#ifdef IDCT_SCALING_SUPPORTED
+    case 1:
+      method_ptr = jpeg_idct_1x1;
+      method = JDCT_ISLOW;	/* jidctred uses islow-style table */
+      break;
+    case 2:
+      method_ptr = jpeg_idct_2x2;
+      method = JDCT_ISLOW;	/* jidctred uses islow-style table */
+      break;
+    case 4:
+      method_ptr = jpeg_idct_4x4;
+      method = JDCT_ISLOW;	/* jidctred uses islow-style table */
+      break;
+#endif
+    case DCTSIZE:
+      switch (cinfo->dct_method) {
+#ifdef DCT_ISLOW_SUPPORTED
+      case JDCT_ISLOW:
+	method_ptr = jpeg_idct_islow;
+	method = JDCT_ISLOW;
+	break;
+#endif
+#ifdef DCT_IFAST_SUPPORTED
+      case JDCT_IFAST:
+	method_ptr = jpeg_idct_ifast;
+	method = JDCT_IFAST;
+	break;
+#endif
+#ifdef DCT_FLOAT_SUPPORTED
+      case JDCT_FLOAT:
+	method_ptr = jpeg_idct_float;
+	method = JDCT_FLOAT;
+	break;
+#endif
+      default:
+	ERREXIT(cinfo, JERR_NOT_COMPILED);
+	break;
+      }
+      break;
+    default:
+      ERREXIT1(cinfo, JERR_BAD_DCTSIZE, compptr->DCT_scaled_size);
+      break;
+    }
+    idct->pub.inverse_DCT[ci] = method_ptr;
+    /* Create multiplier table from quant table.
+     * However, we can skip this if the component is uninteresting
+     * or if we already built the table.  Also, if no quant table
+     * has yet been saved for the component, we leave the
+     * multiplier table all-zero; we'll be reading zeroes from the
+     * coefficient controller's buffer anyway.
+     */
+    if (! compptr->component_needed || idct->cur_method[ci] == method)
+      continue;
+    qtbl = compptr->quant_table;
+    if (qtbl == NULL)		/* happens if no data yet for component */
+      continue;
+    idct->cur_method[ci] = method;
+    switch (method) {
+#ifdef PROVIDE_ISLOW_TABLES
+    case JDCT_ISLOW:
+      {
+	/* For LL&M IDCT method, multipliers are equal to raw quantization
+	 * coefficients, but are stored in natural order as ints.
+	 */
+	ISLOW_MULT_TYPE * ismtbl = (ISLOW_MULT_TYPE *) compptr->dct_table;
+	for (i = 0; i < DCTSIZE2; i++) {
+	  ismtbl[i] = (ISLOW_MULT_TYPE) qtbl->quantval[jpeg_zigzag_order[i]];
+	}
+      }
+      break;
+#endif
+#ifdef DCT_IFAST_SUPPORTED
+    case JDCT_IFAST:
+      {
+	/* For AA&N IDCT method, multipliers are equal to quantization
+	 * coefficients scaled by scalefactor[row]*scalefactor[col], where
+	 *   scalefactor[0] = 1
+	 *   scalefactor[k] = cos(k*PI/16) * sqrt(2)    for k=1..7
+	 * For integer operation, the multiplier table is to be scaled by
+	 * IFAST_SCALE_BITS.  The multipliers are stored in natural order.
+	 */
+	IFAST_MULT_TYPE * ifmtbl = (IFAST_MULT_TYPE *) compptr->dct_table;
+#define CONST_BITS 14
+	static const INT16 aanscales[DCTSIZE2] = {
+	  /* precomputed values scaled up by 14 bits */
+	  16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,
+	  22725, 31521, 29692, 26722, 22725, 17855, 12299,  6270,
+	  21407, 29692, 27969, 25172, 21407, 16819, 11585,  5906,
+	  19266, 26722, 25172, 22654, 19266, 15137, 10426,  5315,
+	  16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,
+	  12873, 17855, 16819, 15137, 12873, 10114,  6967,  3552,
+	   8867, 12299, 11585, 10426,  8867,  6967,  4799,  2446,
+	   4520,  6270,  5906,  5315,  4520,  3552,  2446,  1247
+	};
+	SHIFT_TEMPS
+
+	for (i = 0; i < DCTSIZE2; i++) {
+	  ifmtbl[i] = (IFAST_MULT_TYPE)
+	    DESCALE(MULTIPLY16V16((INT32) qtbl->quantval[jpeg_zigzag_order[i]],
+				  (INT32) aanscales[i]),
+		    CONST_BITS-IFAST_SCALE_BITS);
+	}
+      }
+      break;
+#endif
+#ifdef DCT_FLOAT_SUPPORTED
+    case JDCT_FLOAT:
+      {
+	/* For float AA&N IDCT method, multipliers are equal to quantization
+	 * coefficients scaled by scalefactor[row]*scalefactor[col], where
+	 *   scalefactor[0] = 1
+	 *   scalefactor[k] = cos(k*PI/16) * sqrt(2)    for k=1..7
+	 * The multipliers are stored in natural order.
+	 */
+	FLOAT_MULT_TYPE * fmtbl = (FLOAT_MULT_TYPE *) compptr->dct_table;
+	int row, col;
+	static const double aanscalefactor[DCTSIZE] = {
+	  1.0, 1.387039845, 1.306562965, 1.175875602,
+	  1.0, 0.785694958, 0.541196100, 0.275899379
+	};
+
+	i = 0;
+	for (row = 0; row < DCTSIZE; row++) {
+	  for (col = 0; col < DCTSIZE; col++) {
+	    fmtbl[i] = (FLOAT_MULT_TYPE)
+	      ((double) qtbl->quantval[jpeg_zigzag_order[i]] *
+	       aanscalefactor[row] * aanscalefactor[col]);
+	    i++;
+	  }
+	}
+      }
+      break;
+#endif
+    default:
+      ERREXIT(cinfo, JERR_NOT_COMPILED);
+      break;
+    }
+  }
+}
+
+
+/*
+ * Initialize IDCT manager.
+ */
+
+GLOBAL void
+jinit_inverse_dct (j_decompress_ptr cinfo)
+{
+  my_idct_ptr idct;
+  int ci;
+  jpeg_component_info *compptr;
+
+  idct = (my_idct_ptr)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				SIZEOF(my_idct_controller));
+  cinfo->idct = (struct jpeg_inverse_dct *) idct;
+  idct->pub.start_pass = start_pass;
+
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    /* Allocate and pre-zero a multiplier table for each component */
+    compptr->dct_table =
+      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				  SIZEOF(multiplier_table));
+    MEMZERO(compptr->dct_table, SIZEOF(multiplier_table));
+    /* Mark multiplier table not yet set up for any method */
+    idct->cur_method[ci] = -1;
+  }
+}
diff --git a/libs/jpeg6/jdhuff.cpp b/libs/jpeg6/jdhuff.cpp
index db42772..95174b1 100755
--- a/libs/jpeg6/jdhuff.cpp
+++ b/libs/jpeg6/jdhuff.cpp
@@ -1,574 +1,574 @@
-/*

- * jdhuff.c

- *

- * Copyright (C) 1991-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains Huffman entropy decoding routines.

- *

- * Much of the complexity here has to do with supporting input suspension.

- * If the data source module demands suspension, we want to be able to back

- * up to the start of the current MCU.  To do this, we copy state variables

- * into local working storage, and update them back to the permanent

- * storage only upon successful completion of an MCU.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-#include "jdhuff.h"		/* Declarations shared with jdphuff.c */

-

-

-/*

- * Expanded entropy decoder object for Huffman decoding.

- *

- * The savable_state subrecord contains fields that change within an MCU,

- * but must not be updated permanently until we complete the MCU.

- */

-

-typedef struct {

-  int last_dc_val[MAX_COMPS_IN_SCAN]; /* last DC coef for each component */

-} savable_state;

-

-/* This macro is to work around compilers with missing or broken

- * structure assignment.  You'll need to fix this code if you have

- * such a compiler and you change MAX_COMPS_IN_SCAN.

- */

-

-#ifndef NO_STRUCT_ASSIGN

-#define ASSIGN_STATE(dest,src)  ((dest) = (src))

-#else

-#if MAX_COMPS_IN_SCAN == 4

-#define ASSIGN_STATE(dest,src)  \

-	((dest).last_dc_val[0] = (src).last_dc_val[0], \

-	 (dest).last_dc_val[1] = (src).last_dc_val[1], \

-	 (dest).last_dc_val[2] = (src).last_dc_val[2], \

-	 (dest).last_dc_val[3] = (src).last_dc_val[3])

-#endif

-#endif

-

-

-typedef struct {

-  struct jpeg_entropy_decoder pub; /* public fields */

-

-  /* These fields are loaded into local variables at start of each MCU.

-   * In case of suspension, we exit WITHOUT updating them.

-   */

-  bitread_perm_state bitstate;	/* Bit buffer at start of MCU */

-  savable_state saved;		/* Other state at start of MCU */

-

-  /* These fields are NOT loaded into local working state. */

-  unsigned int restarts_to_go;	/* MCUs left in this restart interval */

-

-  /* Pointers to derived tables (these workspaces have image lifespan) */

-  d_derived_tbl * dc_derived_tbls[NUM_HUFF_TBLS];

-  d_derived_tbl * ac_derived_tbls[NUM_HUFF_TBLS];

-} huff_entropy_decoder;

-

-typedef huff_entropy_decoder * huff_entropy_ptr;

-

-

-/*

- * Initialize for a Huffman-compressed scan.

- */

-

-METHODDEF void

-start_pass_huff_decoder (j_decompress_ptr cinfo)

-{

-  huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;

-  int ci, dctbl, actbl;

-  jpeg_component_info * compptr;

-

-  /* Check that the scan parameters Ss, Se, Ah/Al are OK for sequential JPEG.

-   * This ought to be an error condition, but we make it a warning because

-   * there are some baseline files out there with all zeroes in these bytes.

-   */

-  if (cinfo->Ss != 0 || cinfo->Se != DCTSIZE2-1 ||

-      cinfo->Ah != 0 || cinfo->Al != 0)

-    WARNMS(cinfo, JWRN_NOT_SEQUENTIAL);

-

-  for (ci = 0; ci < cinfo->comps_in_scan; ci++) {

-    compptr = cinfo->cur_comp_info[ci];

-    dctbl = compptr->dc_tbl_no;

-    actbl = compptr->ac_tbl_no;

-    /* Make sure requested tables are present */

-    if (dctbl < 0 || dctbl >= NUM_HUFF_TBLS ||

-	cinfo->dc_huff_tbl_ptrs[dctbl] == NULL)

-      ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, dctbl);

-    if (actbl < 0 || actbl >= NUM_HUFF_TBLS ||

-	cinfo->ac_huff_tbl_ptrs[actbl] == NULL)

-      ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, actbl);

-    /* Compute derived values for Huffman tables */

-    /* We may do this more than once for a table, but it's not expensive */

-    jpeg_make_d_derived_tbl(cinfo, cinfo->dc_huff_tbl_ptrs[dctbl],

-			    & entropy->dc_derived_tbls[dctbl]);

-    jpeg_make_d_derived_tbl(cinfo, cinfo->ac_huff_tbl_ptrs[actbl],

-			    & entropy->ac_derived_tbls[actbl]);

-    /* Initialize DC predictions to 0 */

-    entropy->saved.last_dc_val[ci] = 0;

-  }

-

-  /* Initialize bitread state variables */

-  entropy->bitstate.bits_left = 0;

-  entropy->bitstate.get_buffer = 0; /* unnecessary, but keeps Purify quiet */

-  entropy->bitstate.printed_eod = FALSE;

-

-  /* Initialize restart counter */

-  entropy->restarts_to_go = cinfo->restart_interval;

-}

-

-

-/*

- * Compute the derived values for a Huffman table.

- * Note this is also used by jdphuff.c.

- */

-

-GLOBAL void

-jpeg_make_d_derived_tbl (j_decompress_ptr cinfo, JHUFF_TBL * htbl,

-			 d_derived_tbl ** pdtbl)

-{

-  d_derived_tbl *dtbl;

-  int p, i, l, si;

-  int lookbits, ctr;

-  char huffsize[257];

-  unsigned int huffcode[257];

-  unsigned int code;

-

-  /* Allocate a workspace if we haven't already done so. */

-  if (*pdtbl == NULL)

-    *pdtbl = (d_derived_tbl *)

-      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				  SIZEOF(d_derived_tbl));

-  dtbl = *pdtbl;

-  dtbl->pub = htbl;		/* fill in back link */

-  

-  /* Figure C.1: make table of Huffman code length for each symbol */

-  /* Note that this is in code-length order. */

-

-  p = 0;

-  for (l = 1; l <= 16; l++) {

-    for (i = 1; i <= (int) htbl->bits[l]; i++)

-      huffsize[p++] = (char) l;

-  }

-  huffsize[p] = 0;

-  

-  /* Figure C.2: generate the codes themselves */

-  /* Note that this is in code-length order. */

-  

-  code = 0;

-  si = huffsize[0];

-  p = 0;

-  while (huffsize[p]) {

-    while (((int) huffsize[p]) == si) {

-      huffcode[p++] = code;

-      code++;

-    }

-    code <<= 1;

-    si++;

-  }

-

-  /* Figure F.15: generate decoding tables for bit-sequential decoding */

-

-  p = 0;

-  for (l = 1; l <= 16; l++) {

-    if (htbl->bits[l]) {

-      dtbl->valptr[l] = p; /* huffval[] index of 1st symbol of code length l */

-      dtbl->mincode[l] = huffcode[p]; /* minimum code of length l */

-      p += htbl->bits[l];

-      dtbl->maxcode[l] = huffcode[p-1]; /* maximum code of length l */

-    } else {

-      dtbl->maxcode[l] = -1;	/* -1 if no codes of this length */

-    }

-  }

-  dtbl->maxcode[17] = 0xFFFFFL; /* ensures jpeg_huff_decode terminates */

-

-  /* Compute lookahead tables to speed up decoding.

-   * First we set all the table entries to 0, indicating "too long";

-   * then we iterate through the Huffman codes that are short enough and

-   * fill in all the entries that correspond to bit sequences starting

-   * with that code.

-   */

-

-  MEMZERO(dtbl->look_nbits, SIZEOF(dtbl->look_nbits));

-

-  p = 0;

-  for (l = 1; l <= HUFF_LOOKAHEAD; l++) {

-    for (i = 1; i <= (int) htbl->bits[l]; i++, p++) {

-      /* l = current code's length, p = its index in huffcode[] & huffval[]. */

-      /* Generate left-justified code followed by all possible bit sequences */

-      lookbits = huffcode[p] << (HUFF_LOOKAHEAD-l);

-      for (ctr = 1 << (HUFF_LOOKAHEAD-l); ctr > 0; ctr--) {

-	dtbl->look_nbits[lookbits] = l;

-	dtbl->look_sym[lookbits] = htbl->huffval[p];

-	lookbits++;

-      }

-    }

-  }

-}

-

-

-/*

- * Out-of-line code for bit fetching (shared with jdphuff.c).

- * See jdhuff.h for info about usage.

- * Note: current values of get_buffer and bits_left are passed as parameters,

- * but are returned in the corresponding fields of the state struct.

- *

- * On most machines MIN_GET_BITS should be 25 to allow the full 32-bit width

- * of get_buffer to be used.  (On machines with wider words, an even larger

- * buffer could be used.)  However, on some machines 32-bit shifts are

- * quite slow and take time proportional to the number of places shifted.

- * (This is true with most PC compilers, for instance.)  In this case it may

- * be a win to set MIN_GET_BITS to the minimum value of 15.  This reduces the

- * average shift distance at the cost of more calls to jpeg_fill_bit_buffer.

- */

-

-#ifdef SLOW_SHIFT_32

-#define MIN_GET_BITS  15	/* minimum allowable value */

-#else

-#define MIN_GET_BITS  (BIT_BUF_SIZE-7)

-#endif

-

-

-GLOBAL boolean

-jpeg_fill_bit_buffer (bitread_working_state * state,

-		      register bit_buf_type get_buffer, register int bits_left,

-		      int nbits)

-/* Load up the bit buffer to a depth of at least nbits */

-{

-  /* Copy heavily used state fields into locals (hopefully registers) */

-  register const JOCTET * next_input_byte = state->next_input_byte;

-  register size_t bytes_in_buffer = state->bytes_in_buffer;

-  register int c;

-

-  /* Attempt to load at least MIN_GET_BITS bits into get_buffer. */

-  /* (It is assumed that no request will be for more than that many bits.) */

-

-  while (bits_left < MIN_GET_BITS) {

-    /* Attempt to read a byte */

-    if (state->unread_marker != 0)

-      goto no_more_data;	/* can't advance past a marker */

-

-    if (bytes_in_buffer == 0) {

-      if (! (*state->cinfo->src->fill_input_buffer) (state->cinfo))

-	return FALSE;

-      next_input_byte = state->cinfo->src->next_input_byte;

-      bytes_in_buffer = state->cinfo->src->bytes_in_buffer;

-    }

-    bytes_in_buffer--;

-    c = GETJOCTET(*next_input_byte++);

-

-    /* If it's 0xFF, check and discard stuffed zero byte */

-    if (c == 0xFF) {

-      do {

-	if (bytes_in_buffer == 0) {

-	  if (! (*state->cinfo->src->fill_input_buffer) (state->cinfo))

-	    return FALSE;

-	  next_input_byte = state->cinfo->src->next_input_byte;

-	  bytes_in_buffer = state->cinfo->src->bytes_in_buffer;

-	}

-	bytes_in_buffer--;

-	c = GETJOCTET(*next_input_byte++);

-      } while (c == 0xFF);

-

-      if (c == 0) {

-	/* Found FF/00, which represents an FF data byte */

-	c = 0xFF;

-      } else {

-	/* Oops, it's actually a marker indicating end of compressed data. */

-	/* Better put it back for use later */

-	state->unread_marker = c;

-

-      no_more_data:

-	/* There should be enough bits still left in the data segment; */

-	/* if so, just break out of the outer while loop. */

-	if (bits_left >= nbits)

-	  break;

-	/* Uh-oh.  Report corrupted data to user and stuff zeroes into

-	 * the data stream, so that we can produce some kind of image.

-	 * Note that this code will be repeated for each byte demanded

-	 * for the rest of the segment.  We use a nonvolatile flag to ensure

-	 * that only one warning message appears.

-	 */

-	if (! *(state->printed_eod_ptr)) {

-	  WARNMS(state->cinfo, JWRN_HIT_MARKER);

-	  *(state->printed_eod_ptr) = TRUE;

-	}

-	c = 0;			/* insert a zero byte into bit buffer */

-      }

-    }

-

-    /* OK, load c into get_buffer */

-    get_buffer = (get_buffer << 8) | c;

-    bits_left += 8;

-  }

-

-  /* Unload the local registers */

-  state->next_input_byte = next_input_byte;

-  state->bytes_in_buffer = bytes_in_buffer;

-  state->get_buffer = get_buffer;

-  state->bits_left = bits_left;

-

-  return TRUE;

-}

-

-

-/*

- * Out-of-line code for Huffman code decoding.

- * See jdhuff.h for info about usage.

- */

-

-GLOBAL int

-jpeg_huff_decode (bitread_working_state * state,

-		  register bit_buf_type get_buffer, register int bits_left,

-		  d_derived_tbl * htbl, int min_bits)

-{

-  register int l = min_bits;

-  register INT32 code;

-

-  /* HUFF_DECODE has determined that the code is at least min_bits */

-  /* bits long, so fetch that many bits in one swoop. */

-

-  CHECK_BIT_BUFFER(*state, l, return -1);

-  code = GET_BITS(l);

-

-  /* Collect the rest of the Huffman code one bit at a time. */

-  /* This is per Figure F.16 in the JPEG spec. */

-

-  while (code > htbl->maxcode[l]) {

-    code <<= 1;

-    CHECK_BIT_BUFFER(*state, 1, return -1);

-    code |= GET_BITS(1);

-    l++;

-  }

-

-  /* Unload the local registers */

-  state->get_buffer = get_buffer;

-  state->bits_left = bits_left;

-

-  /* With garbage input we may reach the sentinel value l = 17. */

-

-  if (l > 16) {

-    WARNMS(state->cinfo, JWRN_HUFF_BAD_CODE);

-    return 0;			/* fake a zero as the safest result */

-  }

-

-  return htbl->pub->huffval[ htbl->valptr[l] +

-			    ((int) (code - htbl->mincode[l])) ];

-}

-

-

-/*

- * Figure F.12: extend sign bit.

- * On some machines, a shift and add will be faster than a table lookup.

- */

-

-#ifdef AVOID_TABLES

-

-#define HUFF_EXTEND(x,s)  ((x) < (1<<((s)-1)) ? (x) + (((-1)<<(s)) + 1) : (x))

-

-#else

-

-#define HUFF_EXTEND(x,s)  ((x) < extend_test[s] ? (x) + extend_offset[s] : (x))

-

-static const int extend_test[16] =   /* entry n is 2**(n-1) */

-  { 0, 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,

-    0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000 };

-

-static const int extend_offset[16] = /* entry n is (-1 << n) + 1 */

-  { 0, ((-1)<<1) + 1, ((-1)<<2) + 1, ((-1)<<3) + 1, ((-1)<<4) + 1,

-    ((-1)<<5) + 1, ((-1)<<6) + 1, ((-1)<<7) + 1, ((-1)<<8) + 1,

-    ((-1)<<9) + 1, ((-1)<<10) + 1, ((-1)<<11) + 1, ((-1)<<12) + 1,

-    ((-1)<<13) + 1, ((-1)<<14) + 1, ((-1)<<15) + 1 };

-

-#endif /* AVOID_TABLES */

-

-

-/*

- * Check for a restart marker & resynchronize decoder.

- * Returns FALSE if must suspend.

- */

-

-LOCAL boolean

-process_restart (j_decompress_ptr cinfo)

-{

-  huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;

-  int ci;

-

-  /* Throw away any unused bits remaining in bit buffer; */

-  /* include any full bytes in next_marker's count of discarded bytes */

-  cinfo->marker->discarded_bytes += entropy->bitstate.bits_left / 8;

-  entropy->bitstate.bits_left = 0;

-

-  /* Advance past the RSTn marker */

-  if (! (*cinfo->marker->read_restart_marker) (cinfo))

-    return FALSE;

-

-  /* Re-initialize DC predictions to 0 */

-  for (ci = 0; ci < cinfo->comps_in_scan; ci++)

-    entropy->saved.last_dc_val[ci] = 0;

-

-  /* Reset restart counter */

-  entropy->restarts_to_go = cinfo->restart_interval;

-

-  /* Next segment can get another out-of-data warning */

-  entropy->bitstate.printed_eod = FALSE;

-

-  return TRUE;

-}

-

-

-/*

- * Decode and return one MCU's worth of Huffman-compressed coefficients.

- * The coefficients are reordered from zigzag order into natural array order,

- * but are not dequantized.

- *

- * The i'th block of the MCU is stored into the block pointed to by

- * MCU_data[i].  WE ASSUME THIS AREA HAS BEEN ZEROED BY THE CALLER.

- * (Wholesale zeroing is usually a little faster than retail...)

- *

- * Returns FALSE if data source requested suspension.  In that case no

- * changes have been made to permanent state.  (Exception: some output

- * coefficients may already have been assigned.  This is harmless for

- * this module, since we'll just re-assign them on the next call.)

- */

-

-METHODDEF boolean

-decode_mcu (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)

-{

-  huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;

-  register int s, k, r;

-  int blkn, ci;

-  JBLOCKROW block;

-  BITREAD_STATE_VARS;

-  savable_state state;

-  d_derived_tbl * dctbl;

-  d_derived_tbl * actbl;

-  jpeg_component_info * compptr;

-

-  /* Process restart marker if needed; may have to suspend */

-  if (cinfo->restart_interval) {

-    if (entropy->restarts_to_go == 0)

-      if (! process_restart(cinfo))

-	return FALSE;

-  }

-

-  /* Load up working state */

-  BITREAD_LOAD_STATE(cinfo,entropy->bitstate);

-  ASSIGN_STATE(state, entropy->saved);

-

-  /* Outer loop handles each block in the MCU */

-

-  for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) {

-    block = MCU_data[blkn];

-    ci = cinfo->MCU_membership[blkn];

-    compptr = cinfo->cur_comp_info[ci];

-    dctbl = entropy->dc_derived_tbls[compptr->dc_tbl_no];

-    actbl = entropy->ac_derived_tbls[compptr->ac_tbl_no];

-

-    /* Decode a single block's worth of coefficients */

-

-    /* Section F.2.2.1: decode the DC coefficient difference */

-    HUFF_DECODE(s, br_state, dctbl, return FALSE, label1);

-    if (s) {

-      CHECK_BIT_BUFFER(br_state, s, return FALSE);

-      r = GET_BITS(s);

-      s = HUFF_EXTEND(r, s);

-    }

-

-    /* Shortcut if component's values are not interesting */

-    if (! compptr->component_needed)

-      goto skip_ACs;

-

-    /* Convert DC difference to actual value, update last_dc_val */

-    s += state.last_dc_val[ci];

-    state.last_dc_val[ci] = s;

-    /* Output the DC coefficient (assumes jpeg_natural_order[0] = 0) */

-    (*block)[0] = (JCOEF) s;

-

-    /* Do we need to decode the AC coefficients for this component? */

-    if (compptr->DCT_scaled_size > 1) {

-

-      /* Section F.2.2.2: decode the AC coefficients */

-      /* Since zeroes are skipped, output area must be cleared beforehand */

-      for (k = 1; k < DCTSIZE2; k++) {

-	HUFF_DECODE(s, br_state, actbl, return FALSE, label2);

-      

-	r = s >> 4;

-	s &= 15;

-      

-	if (s) {

-	  k += r;

-	  CHECK_BIT_BUFFER(br_state, s, return FALSE);

-	  r = GET_BITS(s);

-	  s = HUFF_EXTEND(r, s);

-	  /* Output coefficient in natural (dezigzagged) order.

-	   * Note: the extra entries in jpeg_natural_order[] will save us

-	   * if k >= DCTSIZE2, which could happen if the data is corrupted.

-	   */

-	  (*block)[jpeg_natural_order[k]] = (JCOEF) s;

-	} else {

-	  if (r != 15)

-	    break;

-	  k += 15;

-	}

-      }

-

-    } else {

-skip_ACs:

-

-      /* Section F.2.2.2: decode the AC coefficients */

-      /* In this path we just discard the values */

-      for (k = 1; k < DCTSIZE2; k++) {

-	HUFF_DECODE(s, br_state, actbl, return FALSE, label3);

-      

-	r = s >> 4;

-	s &= 15;

-      

-	if (s) {

-	  k += r;

-	  CHECK_BIT_BUFFER(br_state, s, return FALSE);

-	  DROP_BITS(s);

-	} else {

-	  if (r != 15)

-	    break;

-	  k += 15;

-	}

-      }

-

-    }

-  }

-

-  /* Completed MCU, so update state */

-  BITREAD_SAVE_STATE(cinfo,entropy->bitstate);

-  ASSIGN_STATE(entropy->saved, state);

-

-  /* Account for restart interval (no-op if not using restarts) */

-  entropy->restarts_to_go--;

-

-  return TRUE;

-}

-

-

-/*

- * Module initialization routine for Huffman entropy decoding.

- */

-

-GLOBAL void

-jinit_huff_decoder (j_decompress_ptr cinfo)

-{

-  huff_entropy_ptr entropy;

-  int i;

-

-  entropy = (huff_entropy_ptr)

-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				SIZEOF(huff_entropy_decoder));

-  cinfo->entropy = (struct jpeg_entropy_decoder *) entropy;

-  entropy->pub.start_pass = start_pass_huff_decoder;

-  entropy->pub.decode_mcu = decode_mcu;

-

-  /* Mark tables unallocated */

-  for (i = 0; i < NUM_HUFF_TBLS; i++) {

-    entropy->dc_derived_tbls[i] = entropy->ac_derived_tbls[i] = NULL;

-  }

-}

+/*
+ * jdhuff.c
+ *
+ * Copyright (C) 1991-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains Huffman entropy decoding routines.
+ *
+ * Much of the complexity here has to do with supporting input suspension.
+ * If the data source module demands suspension, we want to be able to back
+ * up to the start of the current MCU.  To do this, we copy state variables
+ * into local working storage, and update them back to the permanent
+ * storage only upon successful completion of an MCU.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+#include "jdhuff.h"		/* Declarations shared with jdphuff.c */
+
+
+/*
+ * Expanded entropy decoder object for Huffman decoding.
+ *
+ * The savable_state subrecord contains fields that change within an MCU,
+ * but must not be updated permanently until we complete the MCU.
+ */
+
+typedef struct {
+  int last_dc_val[MAX_COMPS_IN_SCAN]; /* last DC coef for each component */
+} savable_state;
+
+/* This macro is to work around compilers with missing or broken
+ * structure assignment.  You'll need to fix this code if you have
+ * such a compiler and you change MAX_COMPS_IN_SCAN.
+ */
+
+#ifndef NO_STRUCT_ASSIGN
+#define ASSIGN_STATE(dest,src)  ((dest) = (src))
+#else
+#if MAX_COMPS_IN_SCAN == 4
+#define ASSIGN_STATE(dest,src)  \
+	((dest).last_dc_val[0] = (src).last_dc_val[0], \
+	 (dest).last_dc_val[1] = (src).last_dc_val[1], \
+	 (dest).last_dc_val[2] = (src).last_dc_val[2], \
+	 (dest).last_dc_val[3] = (src).last_dc_val[3])
+#endif
+#endif
+
+
+typedef struct {
+  struct jpeg_entropy_decoder pub; /* public fields */
+
+  /* These fields are loaded into local variables at start of each MCU.
+   * In case of suspension, we exit WITHOUT updating them.
+   */
+  bitread_perm_state bitstate;	/* Bit buffer at start of MCU */
+  savable_state saved;		/* Other state at start of MCU */
+
+  /* These fields are NOT loaded into local working state. */
+  unsigned int restarts_to_go;	/* MCUs left in this restart interval */
+
+  /* Pointers to derived tables (these workspaces have image lifespan) */
+  d_derived_tbl * dc_derived_tbls[NUM_HUFF_TBLS];
+  d_derived_tbl * ac_derived_tbls[NUM_HUFF_TBLS];
+} huff_entropy_decoder;
+
+typedef huff_entropy_decoder * huff_entropy_ptr;
+
+
+/*
+ * Initialize for a Huffman-compressed scan.
+ */
+
+METHODDEF void
+start_pass_huff_decoder (j_decompress_ptr cinfo)
+{
+  huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;
+  int ci, dctbl, actbl;
+  jpeg_component_info * compptr;
+
+  /* Check that the scan parameters Ss, Se, Ah/Al are OK for sequential JPEG.
+   * This ought to be an error condition, but we make it a warning because
+   * there are some baseline files out there with all zeroes in these bytes.
+   */
+  if (cinfo->Ss != 0 || cinfo->Se != DCTSIZE2-1 ||
+      cinfo->Ah != 0 || cinfo->Al != 0)
+    WARNMS(cinfo, JWRN_NOT_SEQUENTIAL);
+
+  for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
+    compptr = cinfo->cur_comp_info[ci];
+    dctbl = compptr->dc_tbl_no;
+    actbl = compptr->ac_tbl_no;
+    /* Make sure requested tables are present */
+    if (dctbl < 0 || dctbl >= NUM_HUFF_TBLS ||
+	cinfo->dc_huff_tbl_ptrs[dctbl] == NULL)
+      ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, dctbl);
+    if (actbl < 0 || actbl >= NUM_HUFF_TBLS ||
+	cinfo->ac_huff_tbl_ptrs[actbl] == NULL)
+      ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, actbl);
+    /* Compute derived values for Huffman tables */
+    /* We may do this more than once for a table, but it's not expensive */
+    jpeg_make_d_derived_tbl(cinfo, cinfo->dc_huff_tbl_ptrs[dctbl],
+			    & entropy->dc_derived_tbls[dctbl]);
+    jpeg_make_d_derived_tbl(cinfo, cinfo->ac_huff_tbl_ptrs[actbl],
+			    & entropy->ac_derived_tbls[actbl]);
+    /* Initialize DC predictions to 0 */
+    entropy->saved.last_dc_val[ci] = 0;
+  }
+
+  /* Initialize bitread state variables */
+  entropy->bitstate.bits_left = 0;
+  entropy->bitstate.get_buffer = 0; /* unnecessary, but keeps Purify quiet */
+  entropy->bitstate.printed_eod = FALSE;
+
+  /* Initialize restart counter */
+  entropy->restarts_to_go = cinfo->restart_interval;
+}
+
+
+/*
+ * Compute the derived values for a Huffman table.
+ * Note this is also used by jdphuff.c.
+ */
+
+GLOBAL void
+jpeg_make_d_derived_tbl (j_decompress_ptr cinfo, JHUFF_TBL * htbl,
+			 d_derived_tbl ** pdtbl)
+{
+  d_derived_tbl *dtbl;
+  int p, i, l, si;
+  int lookbits, ctr;
+  char huffsize[257];
+  unsigned int huffcode[257];
+  unsigned int code;
+
+  /* Allocate a workspace if we haven't already done so. */
+  if (*pdtbl == NULL)
+    *pdtbl = (d_derived_tbl *)
+      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				  SIZEOF(d_derived_tbl));
+  dtbl = *pdtbl;
+  dtbl->pub = htbl;		/* fill in back link */
+  
+  /* Figure C.1: make table of Huffman code length for each symbol */
+  /* Note that this is in code-length order. */
+
+  p = 0;
+  for (l = 1; l <= 16; l++) {
+    for (i = 1; i <= (int) htbl->bits[l]; i++)
+      huffsize[p++] = (char) l;
+  }
+  huffsize[p] = 0;
+  
+  /* Figure C.2: generate the codes themselves */
+  /* Note that this is in code-length order. */
+  
+  code = 0;
+  si = huffsize[0];
+  p = 0;
+  while (huffsize[p]) {
+    while (((int) huffsize[p]) == si) {
+      huffcode[p++] = code;
+      code++;
+    }
+    code <<= 1;
+    si++;
+  }
+
+  /* Figure F.15: generate decoding tables for bit-sequential decoding */
+
+  p = 0;
+  for (l = 1; l <= 16; l++) {
+    if (htbl->bits[l]) {
+      dtbl->valptr[l] = p; /* huffval[] index of 1st symbol of code length l */
+      dtbl->mincode[l] = huffcode[p]; /* minimum code of length l */
+      p += htbl->bits[l];
+      dtbl->maxcode[l] = huffcode[p-1]; /* maximum code of length l */
+    } else {
+      dtbl->maxcode[l] = -1;	/* -1 if no codes of this length */
+    }
+  }
+  dtbl->maxcode[17] = 0xFFFFFL; /* ensures jpeg_huff_decode terminates */
+
+  /* Compute lookahead tables to speed up decoding.
+   * First we set all the table entries to 0, indicating "too long";
+   * then we iterate through the Huffman codes that are short enough and
+   * fill in all the entries that correspond to bit sequences starting
+   * with that code.
+   */
+
+  MEMZERO(dtbl->look_nbits, SIZEOF(dtbl->look_nbits));
+
+  p = 0;
+  for (l = 1; l <= HUFF_LOOKAHEAD; l++) {
+    for (i = 1; i <= (int) htbl->bits[l]; i++, p++) {
+      /* l = current code's length, p = its index in huffcode[] & huffval[]. */
+      /* Generate left-justified code followed by all possible bit sequences */
+      lookbits = huffcode[p] << (HUFF_LOOKAHEAD-l);
+      for (ctr = 1 << (HUFF_LOOKAHEAD-l); ctr > 0; ctr--) {
+	dtbl->look_nbits[lookbits] = l;
+	dtbl->look_sym[lookbits] = htbl->huffval[p];
+	lookbits++;
+      }
+    }
+  }
+}
+
+
+/*
+ * Out-of-line code for bit fetching (shared with jdphuff.c).
+ * See jdhuff.h for info about usage.
+ * Note: current values of get_buffer and bits_left are passed as parameters,
+ * but are returned in the corresponding fields of the state struct.
+ *
+ * On most machines MIN_GET_BITS should be 25 to allow the full 32-bit width
+ * of get_buffer to be used.  (On machines with wider words, an even larger
+ * buffer could be used.)  However, on some machines 32-bit shifts are
+ * quite slow and take time proportional to the number of places shifted.
+ * (This is true with most PC compilers, for instance.)  In this case it may
+ * be a win to set MIN_GET_BITS to the minimum value of 15.  This reduces the
+ * average shift distance at the cost of more calls to jpeg_fill_bit_buffer.
+ */
+
+#ifdef SLOW_SHIFT_32
+#define MIN_GET_BITS  15	/* minimum allowable value */
+#else
+#define MIN_GET_BITS  (BIT_BUF_SIZE-7)
+#endif
+
+
+GLOBAL boolean
+jpeg_fill_bit_buffer (bitread_working_state * state,
+		      register bit_buf_type get_buffer, register int bits_left,
+		      int nbits)
+/* Load up the bit buffer to a depth of at least nbits */
+{
+  /* Copy heavily used state fields into locals (hopefully registers) */
+  register const JOCTET * next_input_byte = state->next_input_byte;
+  register size_t bytes_in_buffer = state->bytes_in_buffer;
+  register int c;
+
+  /* Attempt to load at least MIN_GET_BITS bits into get_buffer. */
+  /* (It is assumed that no request will be for more than that many bits.) */
+
+  while (bits_left < MIN_GET_BITS) {
+    /* Attempt to read a byte */
+    if (state->unread_marker != 0)
+      goto no_more_data;	/* can't advance past a marker */
+
+    if (bytes_in_buffer == 0) {
+      if (! (*state->cinfo->src->fill_input_buffer) (state->cinfo))
+	return FALSE;
+      next_input_byte = state->cinfo->src->next_input_byte;
+      bytes_in_buffer = state->cinfo->src->bytes_in_buffer;
+    }
+    bytes_in_buffer--;
+    c = GETJOCTET(*next_input_byte++);
+
+    /* If it's 0xFF, check and discard stuffed zero byte */
+    if (c == 0xFF) {
+      do {
+	if (bytes_in_buffer == 0) {
+	  if (! (*state->cinfo->src->fill_input_buffer) (state->cinfo))
+	    return FALSE;
+	  next_input_byte = state->cinfo->src->next_input_byte;
+	  bytes_in_buffer = state->cinfo->src->bytes_in_buffer;
+	}
+	bytes_in_buffer--;
+	c = GETJOCTET(*next_input_byte++);
+      } while (c == 0xFF);
+
+      if (c == 0) {
+	/* Found FF/00, which represents an FF data byte */
+	c = 0xFF;
+      } else {
+	/* Oops, it's actually a marker indicating end of compressed data. */
+	/* Better put it back for use later */
+	state->unread_marker = c;
+
+      no_more_data:
+	/* There should be enough bits still left in the data segment; */
+	/* if so, just break out of the outer while loop. */
+	if (bits_left >= nbits)
+	  break;
+	/* Uh-oh.  Report corrupted data to user and stuff zeroes into
+	 * the data stream, so that we can produce some kind of image.
+	 * Note that this code will be repeated for each byte demanded
+	 * for the rest of the segment.  We use a nonvolatile flag to ensure
+	 * that only one warning message appears.
+	 */
+	if (! *(state->printed_eod_ptr)) {
+	  WARNMS(state->cinfo, JWRN_HIT_MARKER);
+	  *(state->printed_eod_ptr) = TRUE;
+	}
+	c = 0;			/* insert a zero byte into bit buffer */
+      }
+    }
+
+    /* OK, load c into get_buffer */
+    get_buffer = (get_buffer << 8) | c;
+    bits_left += 8;
+  }
+
+  /* Unload the local registers */
+  state->next_input_byte = next_input_byte;
+  state->bytes_in_buffer = bytes_in_buffer;
+  state->get_buffer = get_buffer;
+  state->bits_left = bits_left;
+
+  return TRUE;
+}
+
+
+/*
+ * Out-of-line code for Huffman code decoding.
+ * See jdhuff.h for info about usage.
+ */
+
+GLOBAL int
+jpeg_huff_decode (bitread_working_state * state,
+		  register bit_buf_type get_buffer, register int bits_left,
+		  d_derived_tbl * htbl, int min_bits)
+{
+  register int l = min_bits;
+  register INT32 code;
+
+  /* HUFF_DECODE has determined that the code is at least min_bits */
+  /* bits long, so fetch that many bits in one swoop. */
+
+  CHECK_BIT_BUFFER(*state, l, return -1);
+  code = GET_BITS(l);
+
+  /* Collect the rest of the Huffman code one bit at a time. */
+  /* This is per Figure F.16 in the JPEG spec. */
+
+  while (code > htbl->maxcode[l]) {
+    code <<= 1;
+    CHECK_BIT_BUFFER(*state, 1, return -1);
+    code |= GET_BITS(1);
+    l++;
+  }
+
+  /* Unload the local registers */
+  state->get_buffer = get_buffer;
+  state->bits_left = bits_left;
+
+  /* With garbage input we may reach the sentinel value l = 17. */
+
+  if (l > 16) {
+    WARNMS(state->cinfo, JWRN_HUFF_BAD_CODE);
+    return 0;			/* fake a zero as the safest result */
+  }
+
+  return htbl->pub->huffval[ htbl->valptr[l] +
+			    ((int) (code - htbl->mincode[l])) ];
+}
+
+
+/*
+ * Figure F.12: extend sign bit.
+ * On some machines, a shift and add will be faster than a table lookup.
+ */
+
+#ifdef AVOID_TABLES
+
+#define HUFF_EXTEND(x,s)  ((x) < (1<<((s)-1)) ? (x) + (((-1)<<(s)) + 1) : (x))
+
+#else
+
+#define HUFF_EXTEND(x,s)  ((x) < extend_test[s] ? (x) + extend_offset[s] : (x))
+
+static const int extend_test[16] =   /* entry n is 2**(n-1) */
+  { 0, 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
+    0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000 };
+
+static const int extend_offset[16] = /* entry n is (-1 << n) + 1 */
+  { 0, ((-1)<<1) + 1, ((-1)<<2) + 1, ((-1)<<3) + 1, ((-1)<<4) + 1,
+    ((-1)<<5) + 1, ((-1)<<6) + 1, ((-1)<<7) + 1, ((-1)<<8) + 1,
+    ((-1)<<9) + 1, ((-1)<<10) + 1, ((-1)<<11) + 1, ((-1)<<12) + 1,
+    ((-1)<<13) + 1, ((-1)<<14) + 1, ((-1)<<15) + 1 };
+
+#endif /* AVOID_TABLES */
+
+
+/*
+ * Check for a restart marker & resynchronize decoder.
+ * Returns FALSE if must suspend.
+ */
+
+LOCAL boolean
+process_restart (j_decompress_ptr cinfo)
+{
+  huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;
+  int ci;
+
+  /* Throw away any unused bits remaining in bit buffer; */
+  /* include any full bytes in next_marker's count of discarded bytes */
+  cinfo->marker->discarded_bytes += entropy->bitstate.bits_left / 8;
+  entropy->bitstate.bits_left = 0;
+
+  /* Advance past the RSTn marker */
+  if (! (*cinfo->marker->read_restart_marker) (cinfo))
+    return FALSE;
+
+  /* Re-initialize DC predictions to 0 */
+  for (ci = 0; ci < cinfo->comps_in_scan; ci++)
+    entropy->saved.last_dc_val[ci] = 0;
+
+  /* Reset restart counter */
+  entropy->restarts_to_go = cinfo->restart_interval;
+
+  /* Next segment can get another out-of-data warning */
+  entropy->bitstate.printed_eod = FALSE;
+
+  return TRUE;
+}
+
+
+/*
+ * Decode and return one MCU's worth of Huffman-compressed coefficients.
+ * The coefficients are reordered from zigzag order into natural array order,
+ * but are not dequantized.
+ *
+ * The i'th block of the MCU is stored into the block pointed to by
+ * MCU_data[i].  WE ASSUME THIS AREA HAS BEEN ZEROED BY THE CALLER.
+ * (Wholesale zeroing is usually a little faster than retail...)
+ *
+ * Returns FALSE if data source requested suspension.  In that case no
+ * changes have been made to permanent state.  (Exception: some output
+ * coefficients may already have been assigned.  This is harmless for
+ * this module, since we'll just re-assign them on the next call.)
+ */
+
+METHODDEF boolean
+decode_mcu (j_decompress_ptr cinfo, JBLOCKROW *MCU_data)
+{
+  huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;
+  register int s, k, r;
+  int blkn, ci;
+  JBLOCKROW block;
+  BITREAD_STATE_VARS;
+  savable_state state;
+  d_derived_tbl * dctbl;
+  d_derived_tbl * actbl;
+  jpeg_component_info * compptr;
+
+  /* Process restart marker if needed; may have to suspend */
+  if (cinfo->restart_interval) {
+    if (entropy->restarts_to_go == 0)
+      if (! process_restart(cinfo))
+	return FALSE;
+  }
+
+  /* Load up working state */
+  BITREAD_LOAD_STATE(cinfo,entropy->bitstate);
+  ASSIGN_STATE(state, entropy->saved);
+
+  /* Outer loop handles each block in the MCU */
+
+  for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) {
+    block = MCU_data[blkn];
+    ci = cinfo->MCU_membership[blkn];
+    compptr = cinfo->cur_comp_info[ci];
+    dctbl = entropy->dc_derived_tbls[compptr->dc_tbl_no];
+    actbl = entropy->ac_derived_tbls[compptr->ac_tbl_no];
+
+    /* Decode a single block's worth of coefficients */
+
+    /* Section F.2.2.1: decode the DC coefficient difference */
+    HUFF_DECODE(s, br_state, dctbl, return FALSE, label1);
+    if (s) {
+      CHECK_BIT_BUFFER(br_state, s, return FALSE);
+      r = GET_BITS(s);
+      s = HUFF_EXTEND(r, s);
+    }
+
+    /* Shortcut if component's values are not interesting */
+    if (! compptr->component_needed)
+      goto skip_ACs;
+
+    /* Convert DC difference to actual value, update last_dc_val */
+    s += state.last_dc_val[ci];
+    state.last_dc_val[ci] = s;
+    /* Output the DC coefficient (assumes jpeg_natural_order[0] = 0) */
+    (*block)[0] = (JCOEF) s;
+
+    /* Do we need to decode the AC coefficients for this component? */
+    if (compptr->DCT_scaled_size > 1) {
+
+      /* Section F.2.2.2: decode the AC coefficients */
+      /* Since zeroes are skipped, output area must be cleared beforehand */
+      for (k = 1; k < DCTSIZE2; k++) {
+	HUFF_DECODE(s, br_state, actbl, return FALSE, label2);
+      
+	r = s >> 4;
+	s &= 15;
+      
+	if (s) {
+	  k += r;
+	  CHECK_BIT_BUFFER(br_state, s, return FALSE);
+	  r = GET_BITS(s);
+	  s = HUFF_EXTEND(r, s);
+	  /* Output coefficient in natural (dezigzagged) order.
+	   * Note: the extra entries in jpeg_natural_order[] will save us
+	   * if k >= DCTSIZE2, which could happen if the data is corrupted.
+	   */
+	  (*block)[jpeg_natural_order[k]] = (JCOEF) s;
+	} else {
+	  if (r != 15)
+	    break;
+	  k += 15;
+	}
+      }
+
+    } else {
+skip_ACs:
+
+      /* Section F.2.2.2: decode the AC coefficients */
+      /* In this path we just discard the values */
+      for (k = 1; k < DCTSIZE2; k++) {
+	HUFF_DECODE(s, br_state, actbl, return FALSE, label3);
+      
+	r = s >> 4;
+	s &= 15;
+      
+	if (s) {
+	  k += r;
+	  CHECK_BIT_BUFFER(br_state, s, return FALSE);
+	  DROP_BITS(s);
+	} else {
+	  if (r != 15)
+	    break;
+	  k += 15;
+	}
+      }
+
+    }
+  }
+
+  /* Completed MCU, so update state */
+  BITREAD_SAVE_STATE(cinfo,entropy->bitstate);
+  ASSIGN_STATE(entropy->saved, state);
+
+  /* Account for restart interval (no-op if not using restarts) */
+  entropy->restarts_to_go--;
+
+  return TRUE;
+}
+
+
+/*
+ * Module initialization routine for Huffman entropy decoding.
+ */
+
+GLOBAL void
+jinit_huff_decoder (j_decompress_ptr cinfo)
+{
+  huff_entropy_ptr entropy;
+  int i;
+
+  entropy = (huff_entropy_ptr)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				SIZEOF(huff_entropy_decoder));
+  cinfo->entropy = (struct jpeg_entropy_decoder *) entropy;
+  entropy->pub.start_pass = start_pass_huff_decoder;
+  entropy->pub.decode_mcu = decode_mcu;
+
+  /* Mark tables unallocated */
+  for (i = 0; i < NUM_HUFF_TBLS; i++) {
+    entropy->dc_derived_tbls[i] = entropy->ac_derived_tbls[i] = NULL;
+  }
+}
diff --git a/libs/jpeg6/jdhuff.h b/libs/jpeg6/jdhuff.h
index 65f3054..d375c78 100755
--- a/libs/jpeg6/jdhuff.h
+++ b/libs/jpeg6/jdhuff.h
@@ -1,202 +1,202 @@
-/*

- * jdhuff.h

- *

- * Copyright (C) 1991-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains declarations for Huffman entropy decoding routines

- * that are shared between the sequential decoder (jdhuff.c) and the

- * progressive decoder (jdphuff.c).  No other modules need to see these.

- */

-

-/* Short forms of external names for systems with brain-damaged linkers. */

-

-#ifdef NEED_SHORT_EXTERNAL_NAMES

-#define jpeg_make_d_derived_tbl	jMkDDerived

-#define jpeg_fill_bit_buffer	jFilBitBuf

-#define jpeg_huff_decode	jHufDecode

-#endif /* NEED_SHORT_EXTERNAL_NAMES */

-

-

-/* Derived data constructed for each Huffman table */

-

-#define HUFF_LOOKAHEAD	8	/* # of bits of lookahead */

-

-typedef struct {

-  /* Basic tables: (element [0] of each array is unused) */

-  INT32 mincode[17];		/* smallest code of length k */

-  INT32 maxcode[18];		/* largest code of length k (-1 if none) */

-  /* (maxcode[17] is a sentinel to ensure jpeg_huff_decode terminates) */

-  int valptr[17];		/* huffval[] index of 1st symbol of length k */

-

-  /* Link to public Huffman table (needed only in jpeg_huff_decode) */

-  JHUFF_TBL *pub;

-

-  /* Lookahead tables: indexed by the next HUFF_LOOKAHEAD bits of

-   * the input data stream.  If the next Huffman code is no more

-   * than HUFF_LOOKAHEAD bits long, we can obtain its length and

-   * the corresponding symbol directly from these tables.

-   */

-  int look_nbits[1<<HUFF_LOOKAHEAD]; /* # bits, or 0 if too long */

-  UINT8 look_sym[1<<HUFF_LOOKAHEAD]; /* symbol, or unused */

-} d_derived_tbl;

-

-/* Expand a Huffman table definition into the derived format */

-EXTERN void jpeg_make_d_derived_tbl JPP((j_decompress_ptr cinfo,

-				JHUFF_TBL * htbl, d_derived_tbl ** pdtbl));

-

-

-/*

- * Fetching the next N bits from the input stream is a time-critical operation

- * for the Huffman decoders.  We implement it with a combination of inline

- * macros and out-of-line subroutines.  Note that N (the number of bits

- * demanded at one time) never exceeds 15 for JPEG use.

- *

- * We read source bytes into get_buffer and dole out bits as needed.

- * If get_buffer already contains enough bits, they are fetched in-line

- * by the macros CHECK_BIT_BUFFER and GET_BITS.  When there aren't enough

- * bits, jpeg_fill_bit_buffer is called; it will attempt to fill get_buffer

- * as full as possible (not just to the number of bits needed; this

- * prefetching reduces the overhead cost of calling jpeg_fill_bit_buffer).

- * Note that jpeg_fill_bit_buffer may return FALSE to indicate suspension.

- * On TRUE return, jpeg_fill_bit_buffer guarantees that get_buffer contains

- * at least the requested number of bits --- dummy zeroes are inserted if

- * necessary.

- */

-

-typedef INT32 bit_buf_type;	/* type of bit-extraction buffer */

-#define BIT_BUF_SIZE  32	/* size of buffer in bits */

-

-/* If long is > 32 bits on your machine, and shifting/masking longs is

- * reasonably fast, making bit_buf_type be long and setting BIT_BUF_SIZE

- * appropriately should be a win.  Unfortunately we can't do this with

- * something like  #define BIT_BUF_SIZE (sizeof(bit_buf_type)*8)

- * because not all machines measure sizeof in 8-bit bytes.

- */

-

-typedef struct {		/* Bitreading state saved across MCUs */

-  bit_buf_type get_buffer;	/* current bit-extraction buffer */

-  int bits_left;		/* # of unused bits in it */

-  boolean printed_eod;		/* flag to suppress multiple warning msgs */

-} bitread_perm_state;

-

-typedef struct {		/* Bitreading working state within an MCU */

-  /* current data source state */

-  const JOCTET * next_input_byte; /* => next byte to read from source */

-  size_t bytes_in_buffer;	/* # of bytes remaining in source buffer */

-  int unread_marker;		/* nonzero if we have hit a marker */

-  /* bit input buffer --- note these values are kept in register variables,

-   * not in this struct, inside the inner loops.

-   */

-  bit_buf_type get_buffer;	/* current bit-extraction buffer */

-  int bits_left;		/* # of unused bits in it */

-  /* pointers needed by jpeg_fill_bit_buffer */

-  j_decompress_ptr cinfo;	/* back link to decompress master record */

-  boolean * printed_eod_ptr;	/* => flag in permanent state */

-} bitread_working_state;

-

-/* Macros to declare and load/save bitread local variables. */

-#define BITREAD_STATE_VARS  \

-	register bit_buf_type get_buffer;  \

-	register int bits_left;  \

-	bitread_working_state br_state

-

-#define BITREAD_LOAD_STATE(cinfop,permstate)  \

-	br_state.cinfo = cinfop; \

-	br_state.next_input_byte = cinfop->src->next_input_byte; \

-	br_state.bytes_in_buffer = cinfop->src->bytes_in_buffer; \

-	br_state.unread_marker = cinfop->unread_marker; \

-	get_buffer = permstate.get_buffer; \

-	bits_left = permstate.bits_left; \

-	br_state.printed_eod_ptr = & permstate.printed_eod

-

-#define BITREAD_SAVE_STATE(cinfop,permstate)  \

-	cinfop->src->next_input_byte = br_state.next_input_byte; \

-	cinfop->src->bytes_in_buffer = br_state.bytes_in_buffer; \

-	cinfop->unread_marker = br_state.unread_marker; \

-	permstate.get_buffer = get_buffer; \

-	permstate.bits_left = bits_left

-

-/*

- * These macros provide the in-line portion of bit fetching.

- * Use CHECK_BIT_BUFFER to ensure there are N bits in get_buffer

- * before using GET_BITS, PEEK_BITS, or DROP_BITS.

- * The variables get_buffer and bits_left are assumed to be locals,

- * but the state struct might not be (jpeg_huff_decode needs this).

- *	CHECK_BIT_BUFFER(state,n,action);

- *		Ensure there are N bits in get_buffer; if suspend, take action.

- *      val = GET_BITS(n);

- *		Fetch next N bits.

- *      val = PEEK_BITS(n);

- *		Fetch next N bits without removing them from the buffer.

- *	DROP_BITS(n);

- *		Discard next N bits.

- * The value N should be a simple variable, not an expression, because it

- * is evaluated multiple times.

- */

-

-#define CHECK_BIT_BUFFER(state,nbits,action) \

-	{ if (bits_left < (nbits)) {  \

-	    if (! jpeg_fill_bit_buffer(&(state),get_buffer,bits_left,nbits))  \

-	      { action; }  \

-	    get_buffer = (state).get_buffer; bits_left = (state).bits_left; } }

-

-#define GET_BITS(nbits) \

-	(((int) (get_buffer >> (bits_left -= (nbits)))) & ((1<<(nbits))-1))

-

-#define PEEK_BITS(nbits) \

-	(((int) (get_buffer >> (bits_left -  (nbits)))) & ((1<<(nbits))-1))

-

-#define DROP_BITS(nbits) \

-	(bits_left -= (nbits))

-

-/* Load up the bit buffer to a depth of at least nbits */

-EXTERN boolean jpeg_fill_bit_buffer JPP((bitread_working_state * state,

-		register bit_buf_type get_buffer, register int bits_left,

-		int nbits));

-

-

-/*

- * Code for extracting next Huffman-coded symbol from input bit stream.

- * Again, this is time-critical and we make the main paths be macros.

- *

- * We use a lookahead table to process codes of up to HUFF_LOOKAHEAD bits

- * without looping.  Usually, more than 95% of the Huffman codes will be 8

- * or fewer bits long.  The few overlength codes are handled with a loop,

- * which need not be inline code.

- *

- * Notes about the HUFF_DECODE macro:

- * 1. Near the end of the data segment, we may fail to get enough bits

- *    for a lookahead.  In that case, we do it the hard way.

- * 2. If the lookahead table contains no entry, the next code must be

- *    more than HUFF_LOOKAHEAD bits long.

- * 3. jpeg_huff_decode returns -1 if forced to suspend.

- */

-

-#define HUFF_DECODE(result,state,htbl,failaction,slowlabel) \

-{ register int nb, look; \

-  if (bits_left < HUFF_LOOKAHEAD) { \

-    if (! jpeg_fill_bit_buffer(&state,get_buffer,bits_left, 0)) {failaction;} \

-    get_buffer = state.get_buffer; bits_left = state.bits_left; \

-    if (bits_left < HUFF_LOOKAHEAD) { \

-      nb = 1; goto slowlabel; \

-    } \

-  } \

-  look = PEEK_BITS(HUFF_LOOKAHEAD); \

-  if ((nb = htbl->look_nbits[look]) != 0) { \

-    DROP_BITS(nb); \

-    result = htbl->look_sym[look]; \

-  } else { \

-    nb = HUFF_LOOKAHEAD+1; \

-slowlabel: \

-    if ((result=jpeg_huff_decode(&state,get_buffer,bits_left,htbl,nb)) < 0) \

-	{ failaction; } \

-    get_buffer = state.get_buffer; bits_left = state.bits_left; \

-  } \

-}

-

-/* Out-of-line case for Huffman code fetching */

-EXTERN int jpeg_huff_decode JPP((bitread_working_state * state,

-		register bit_buf_type get_buffer, register int bits_left,

-		d_derived_tbl * htbl, int min_bits));

+/*
+ * jdhuff.h
+ *
+ * Copyright (C) 1991-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains declarations for Huffman entropy decoding routines
+ * that are shared between the sequential decoder (jdhuff.c) and the
+ * progressive decoder (jdphuff.c).  No other modules need to see these.
+ */
+
+/* Short forms of external names for systems with brain-damaged linkers. */
+
+#ifdef NEED_SHORT_EXTERNAL_NAMES
+#define jpeg_make_d_derived_tbl	jMkDDerived
+#define jpeg_fill_bit_buffer	jFilBitBuf
+#define jpeg_huff_decode	jHufDecode
+#endif /* NEED_SHORT_EXTERNAL_NAMES */
+
+
+/* Derived data constructed for each Huffman table */
+
+#define HUFF_LOOKAHEAD	8	/* # of bits of lookahead */
+
+typedef struct {
+  /* Basic tables: (element [0] of each array is unused) */
+  INT32 mincode[17];		/* smallest code of length k */
+  INT32 maxcode[18];		/* largest code of length k (-1 if none) */
+  /* (maxcode[17] is a sentinel to ensure jpeg_huff_decode terminates) */
+  int valptr[17];		/* huffval[] index of 1st symbol of length k */
+
+  /* Link to public Huffman table (needed only in jpeg_huff_decode) */
+  JHUFF_TBL *pub;
+
+  /* Lookahead tables: indexed by the next HUFF_LOOKAHEAD bits of
+   * the input data stream.  If the next Huffman code is no more
+   * than HUFF_LOOKAHEAD bits long, we can obtain its length and
+   * the corresponding symbol directly from these tables.
+   */
+  int look_nbits[1<<HUFF_LOOKAHEAD]; /* # bits, or 0 if too long */
+  UINT8 look_sym[1<<HUFF_LOOKAHEAD]; /* symbol, or unused */
+} d_derived_tbl;
+
+/* Expand a Huffman table definition into the derived format */
+EXTERN void jpeg_make_d_derived_tbl JPP((j_decompress_ptr cinfo,
+				JHUFF_TBL * htbl, d_derived_tbl ** pdtbl));
+
+
+/*
+ * Fetching the next N bits from the input stream is a time-critical operation
+ * for the Huffman decoders.  We implement it with a combination of inline
+ * macros and out-of-line subroutines.  Note that N (the number of bits
+ * demanded at one time) never exceeds 15 for JPEG use.
+ *
+ * We read source bytes into get_buffer and dole out bits as needed.
+ * If get_buffer already contains enough bits, they are fetched in-line
+ * by the macros CHECK_BIT_BUFFER and GET_BITS.  When there aren't enough
+ * bits, jpeg_fill_bit_buffer is called; it will attempt to fill get_buffer
+ * as full as possible (not just to the number of bits needed; this
+ * prefetching reduces the overhead cost of calling jpeg_fill_bit_buffer).
+ * Note that jpeg_fill_bit_buffer may return FALSE to indicate suspension.
+ * On TRUE return, jpeg_fill_bit_buffer guarantees that get_buffer contains
+ * at least the requested number of bits --- dummy zeroes are inserted if
+ * necessary.
+ */
+
+typedef INT32 bit_buf_type;	/* type of bit-extraction buffer */
+#define BIT_BUF_SIZE  32	/* size of buffer in bits */
+
+/* If long is > 32 bits on your machine, and shifting/masking longs is
+ * reasonably fast, making bit_buf_type be long and setting BIT_BUF_SIZE
+ * appropriately should be a win.  Unfortunately we can't do this with
+ * something like  #define BIT_BUF_SIZE (sizeof(bit_buf_type)*8)
+ * because not all machines measure sizeof in 8-bit bytes.
+ */
+
+typedef struct {		/* Bitreading state saved across MCUs */
+  bit_buf_type get_buffer;	/* current bit-extraction buffer */
+  int bits_left;		/* # of unused bits in it */
+  boolean printed_eod;		/* flag to suppress multiple warning msgs */
+} bitread_perm_state;
+
+typedef struct {		/* Bitreading working state within an MCU */
+  /* current data source state */
+  const JOCTET * next_input_byte; /* => next byte to read from source */
+  size_t bytes_in_buffer;	/* # of bytes remaining in source buffer */
+  int unread_marker;		/* nonzero if we have hit a marker */
+  /* bit input buffer --- note these values are kept in register variables,
+   * not in this struct, inside the inner loops.
+   */
+  bit_buf_type get_buffer;	/* current bit-extraction buffer */
+  int bits_left;		/* # of unused bits in it */
+  /* pointers needed by jpeg_fill_bit_buffer */
+  j_decompress_ptr cinfo;	/* back link to decompress master record */
+  boolean * printed_eod_ptr;	/* => flag in permanent state */
+} bitread_working_state;
+
+/* Macros to declare and load/save bitread local variables. */
+#define BITREAD_STATE_VARS  \
+	register bit_buf_type get_buffer;  \
+	register int bits_left;  \
+	bitread_working_state br_state
+
+#define BITREAD_LOAD_STATE(cinfop,permstate)  \
+	br_state.cinfo = cinfop; \
+	br_state.next_input_byte = cinfop->src->next_input_byte; \
+	br_state.bytes_in_buffer = cinfop->src->bytes_in_buffer; \
+	br_state.unread_marker = cinfop->unread_marker; \
+	get_buffer = permstate.get_buffer; \
+	bits_left = permstate.bits_left; \
+	br_state.printed_eod_ptr = & permstate.printed_eod
+
+#define BITREAD_SAVE_STATE(cinfop,permstate)  \
+	cinfop->src->next_input_byte = br_state.next_input_byte; \
+	cinfop->src->bytes_in_buffer = br_state.bytes_in_buffer; \
+	cinfop->unread_marker = br_state.unread_marker; \
+	permstate.get_buffer = get_buffer; \
+	permstate.bits_left = bits_left
+
+/*
+ * These macros provide the in-line portion of bit fetching.
+ * Use CHECK_BIT_BUFFER to ensure there are N bits in get_buffer
+ * before using GET_BITS, PEEK_BITS, or DROP_BITS.
+ * The variables get_buffer and bits_left are assumed to be locals,
+ * but the state struct might not be (jpeg_huff_decode needs this).
+ *	CHECK_BIT_BUFFER(state,n,action);
+ *		Ensure there are N bits in get_buffer; if suspend, take action.
+ *      val = GET_BITS(n);
+ *		Fetch next N bits.
+ *      val = PEEK_BITS(n);
+ *		Fetch next N bits without removing them from the buffer.
+ *	DROP_BITS(n);
+ *		Discard next N bits.
+ * The value N should be a simple variable, not an expression, because it
+ * is evaluated multiple times.
+ */
+
+#define CHECK_BIT_BUFFER(state,nbits,action) \
+	{ if (bits_left < (nbits)) {  \
+	    if (! jpeg_fill_bit_buffer(&(state),get_buffer,bits_left,nbits))  \
+	      { action; }  \
+	    get_buffer = (state).get_buffer; bits_left = (state).bits_left; } }
+
+#define GET_BITS(nbits) \
+	(((int) (get_buffer >> (bits_left -= (nbits)))) & ((1<<(nbits))-1))
+
+#define PEEK_BITS(nbits) \
+	(((int) (get_buffer >> (bits_left -  (nbits)))) & ((1<<(nbits))-1))
+
+#define DROP_BITS(nbits) \
+	(bits_left -= (nbits))
+
+/* Load up the bit buffer to a depth of at least nbits */
+EXTERN boolean jpeg_fill_bit_buffer JPP((bitread_working_state * state,
+		register bit_buf_type get_buffer, register int bits_left,
+		int nbits));
+
+
+/*
+ * Code for extracting next Huffman-coded symbol from input bit stream.
+ * Again, this is time-critical and we make the main paths be macros.
+ *
+ * We use a lookahead table to process codes of up to HUFF_LOOKAHEAD bits
+ * without looping.  Usually, more than 95% of the Huffman codes will be 8
+ * or fewer bits long.  The few overlength codes are handled with a loop,
+ * which need not be inline code.
+ *
+ * Notes about the HUFF_DECODE macro:
+ * 1. Near the end of the data segment, we may fail to get enough bits
+ *    for a lookahead.  In that case, we do it the hard way.
+ * 2. If the lookahead table contains no entry, the next code must be
+ *    more than HUFF_LOOKAHEAD bits long.
+ * 3. jpeg_huff_decode returns -1 if forced to suspend.
+ */
+
+#define HUFF_DECODE(result,state,htbl,failaction,slowlabel) \
+{ register int nb, look; \
+  if (bits_left < HUFF_LOOKAHEAD) { \
+    if (! jpeg_fill_bit_buffer(&state,get_buffer,bits_left, 0)) {failaction;} \
+    get_buffer = state.get_buffer; bits_left = state.bits_left; \
+    if (bits_left < HUFF_LOOKAHEAD) { \
+      nb = 1; goto slowlabel; \
+    } \
+  } \
+  look = PEEK_BITS(HUFF_LOOKAHEAD); \
+  if ((nb = htbl->look_nbits[look]) != 0) { \
+    DROP_BITS(nb); \
+    result = htbl->look_sym[look]; \
+  } else { \
+    nb = HUFF_LOOKAHEAD+1; \
+slowlabel: \
+    if ((result=jpeg_huff_decode(&state,get_buffer,bits_left,htbl,nb)) < 0) \
+	{ failaction; } \
+    get_buffer = state.get_buffer; bits_left = state.bits_left; \
+  } \
+}
+
+/* Out-of-line case for Huffman code fetching */
+EXTERN int jpeg_huff_decode JPP((bitread_working_state * state,
+		register bit_buf_type get_buffer, register int bits_left,
+		d_derived_tbl * htbl, int min_bits));
diff --git a/libs/jpeg6/jdinput.cpp b/libs/jpeg6/jdinput.cpp
index 5b4774f..3061a17 100755
--- a/libs/jpeg6/jdinput.cpp
+++ b/libs/jpeg6/jdinput.cpp
@@ -1,381 +1,381 @@
-/*

- * jdinput.c

- *

- * Copyright (C) 1991-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains input control logic for the JPEG decompressor.

- * These routines are concerned with controlling the decompressor's input

- * processing (marker reading and coefficient decoding).  The actual input

- * reading is done in jdmarker.c, jdhuff.c, and jdphuff.c.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-

-

-/* Private state */

-

-typedef struct {

-  struct jpeg_input_controller pub; /* public fields */

-

-  boolean inheaders;		/* TRUE until first SOS is reached */

-} my_input_controller;

-

-typedef my_input_controller * my_inputctl_ptr;

-

-

-/* Forward declarations */

-METHODDEF int consume_markers JPP((j_decompress_ptr cinfo));

-

-

-/*

- * Routines to calculate various quantities related to the size of the image.

- */

-

-LOCAL void

-initial_setup (j_decompress_ptr cinfo)

-/* Called once, when first SOS marker is reached */

-{

-  int ci;

-  jpeg_component_info *compptr;

-

-  /* Make sure image isn't bigger than I can handle */

-  if ((long) cinfo->image_height > (long) JPEG_MAX_DIMENSION ||

-      (long) cinfo->image_width > (long) JPEG_MAX_DIMENSION)

-    ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION);

-

-  /* For now, precision must match compiled-in value... */

-  if (cinfo->data_precision != BITS_IN_JSAMPLE)

-    ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);

-

-  /* Check that number of components won't exceed internal array sizes */

-  if (cinfo->num_components > MAX_COMPONENTS)

-    ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,

-	     MAX_COMPONENTS);

-

-  /* Compute maximum sampling factors; check factor validity */

-  cinfo->max_h_samp_factor = 1;

-  cinfo->max_v_samp_factor = 1;

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    if (compptr->h_samp_factor<=0 || compptr->h_samp_factor>MAX_SAMP_FACTOR ||

-	compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR)

-      ERREXIT(cinfo, JERR_BAD_SAMPLING);

-    cinfo->max_h_samp_factor = MAX(cinfo->max_h_samp_factor,

-				   compptr->h_samp_factor);

-    cinfo->max_v_samp_factor = MAX(cinfo->max_v_samp_factor,

-				   compptr->v_samp_factor);

-  }

-

-  /* We initialize DCT_scaled_size and min_DCT_scaled_size to DCTSIZE.

-   * In the full decompressor, this will be overridden by jdmaster.c;

-   * but in the transcoder, jdmaster.c is not used, so we must do it here.

-   */

-  cinfo->min_DCT_scaled_size = DCTSIZE;

-

-  /* Compute dimensions of components */

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    compptr->DCT_scaled_size = DCTSIZE;

-    /* Size in DCT blocks */

-    compptr->width_in_blocks = (JDIMENSION)

-      jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor,

-		    (long) (cinfo->max_h_samp_factor * DCTSIZE));

-    compptr->height_in_blocks = (JDIMENSION)

-      jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor,

-		    (long) (cinfo->max_v_samp_factor * DCTSIZE));

-    /* downsampled_width and downsampled_height will also be overridden by

-     * jdmaster.c if we are doing full decompression.  The transcoder library

-     * doesn't use these values, but the calling application might.

-     */

-    /* Size in samples */

-    compptr->downsampled_width = (JDIMENSION)

-      jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor,

-		    (long) cinfo->max_h_samp_factor);

-    compptr->downsampled_height = (JDIMENSION)

-      jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor,

-		    (long) cinfo->max_v_samp_factor);

-    /* Mark component needed, until color conversion says otherwise */

-    compptr->component_needed = TRUE;

-    /* Mark no quantization table yet saved for component */

-    compptr->quant_table = NULL;

-  }

-

-  /* Compute number of fully interleaved MCU rows. */

-  cinfo->total_iMCU_rows = (JDIMENSION)

-    jdiv_round_up((long) cinfo->image_height,

-		  (long) (cinfo->max_v_samp_factor*DCTSIZE));

-

-  /* Decide whether file contains multiple scans */

-  if (cinfo->comps_in_scan < cinfo->num_components || cinfo->progressive_mode)

-    cinfo->inputctl->has_multiple_scans = TRUE;

-  else

-    cinfo->inputctl->has_multiple_scans = FALSE;

-}

-

-

-LOCAL void

-per_scan_setup (j_decompress_ptr cinfo)

-/* Do computations that are needed before processing a JPEG scan */

-/* cinfo->comps_in_scan and cinfo->cur_comp_info[] were set from SOS marker */

-{

-  int ci, mcublks, tmp;

-  jpeg_component_info *compptr;

-  

-  if (cinfo->comps_in_scan == 1) {

-    

-    /* Noninterleaved (single-component) scan */

-    compptr = cinfo->cur_comp_info[0];

-    

-    /* Overall image size in MCUs */

-    cinfo->MCUs_per_row = compptr->width_in_blocks;

-    cinfo->MCU_rows_in_scan = compptr->height_in_blocks;

-    

-    /* For noninterleaved scan, always one block per MCU */

-    compptr->MCU_width = 1;

-    compptr->MCU_height = 1;

-    compptr->MCU_blocks = 1;

-    compptr->MCU_sample_width = compptr->DCT_scaled_size;

-    compptr->last_col_width = 1;

-    /* For noninterleaved scans, it is convenient to define last_row_height

-     * as the number of block rows present in the last iMCU row.

-     */

-    tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor);

-    if (tmp == 0) tmp = compptr->v_samp_factor;

-    compptr->last_row_height = tmp;

-    

-    /* Prepare array describing MCU composition */

-    cinfo->blocks_in_MCU = 1;

-    cinfo->MCU_membership[0] = 0;

-    

-  } else {

-    

-    /* Interleaved (multi-component) scan */

-    if (cinfo->comps_in_scan <= 0 || cinfo->comps_in_scan > MAX_COMPS_IN_SCAN)

-      ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->comps_in_scan,

-	       MAX_COMPS_IN_SCAN);

-    

-    /* Overall image size in MCUs */

-    cinfo->MCUs_per_row = (JDIMENSION)

-      jdiv_round_up((long) cinfo->image_width,

-		    (long) (cinfo->max_h_samp_factor*DCTSIZE));

-    cinfo->MCU_rows_in_scan = (JDIMENSION)

-      jdiv_round_up((long) cinfo->image_height,

-		    (long) (cinfo->max_v_samp_factor*DCTSIZE));

-    

-    cinfo->blocks_in_MCU = 0;

-    

-    for (ci = 0; ci < cinfo->comps_in_scan; ci++) {

-      compptr = cinfo->cur_comp_info[ci];

-      /* Sampling factors give # of blocks of component in each MCU */

-      compptr->MCU_width = compptr->h_samp_factor;

-      compptr->MCU_height = compptr->v_samp_factor;

-      compptr->MCU_blocks = compptr->MCU_width * compptr->MCU_height;

-      compptr->MCU_sample_width = compptr->MCU_width * compptr->DCT_scaled_size;

-      /* Figure number of non-dummy blocks in last MCU column & row */

-      tmp = (int) (compptr->width_in_blocks % compptr->MCU_width);

-      if (tmp == 0) tmp = compptr->MCU_width;

-      compptr->last_col_width = tmp;

-      tmp = (int) (compptr->height_in_blocks % compptr->MCU_height);

-      if (tmp == 0) tmp = compptr->MCU_height;

-      compptr->last_row_height = tmp;

-      /* Prepare array describing MCU composition */

-      mcublks = compptr->MCU_blocks;

-      if (cinfo->blocks_in_MCU + mcublks > D_MAX_BLOCKS_IN_MCU)

-	ERREXIT(cinfo, JERR_BAD_MCU_SIZE);

-      while (mcublks-- > 0) {

-	cinfo->MCU_membership[cinfo->blocks_in_MCU++] = ci;

-      }

-    }

-    

-  }

-}

-

-

-/*

- * Save away a copy of the Q-table referenced by each component present

- * in the current scan, unless already saved during a prior scan.

- *

- * In a multiple-scan JPEG file, the encoder could assign different components

- * the same Q-table slot number, but change table definitions between scans

- * so that each component uses a different Q-table.  (The IJG encoder is not

- * currently capable of doing this, but other encoders might.)  Since we want

- * to be able to dequantize all the components at the end of the file, this

- * means that we have to save away the table actually used for each component.

- * We do this by copying the table at the start of the first scan containing

- * the component.

- * The JPEG spec prohibits the encoder from changing the contents of a Q-table

- * slot between scans of a component using that slot.  If the encoder does so

- * anyway, this decoder will simply use the Q-table values that were current

- * at the start of the first scan for the component.

- *

- * The decompressor output side looks only at the saved quant tables,

- * not at the current Q-table slots.

- */

-

-LOCAL void

-latch_quant_tables (j_decompress_ptr cinfo)

-{

-  int ci, qtblno;

-  jpeg_component_info *compptr;

-  JQUANT_TBL * qtbl;

-

-  for (ci = 0; ci < cinfo->comps_in_scan; ci++) {

-    compptr = cinfo->cur_comp_info[ci];

-    /* No work if we already saved Q-table for this component */

-    if (compptr->quant_table != NULL)

-      continue;

-    /* Make sure specified quantization table is present */

-    qtblno = compptr->quant_tbl_no;

-    if (qtblno < 0 || qtblno >= NUM_QUANT_TBLS ||

-	cinfo->quant_tbl_ptrs[qtblno] == NULL)

-      ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, qtblno);

-    /* OK, save away the quantization table */

-    qtbl = (JQUANT_TBL *)

-      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				  SIZEOF(JQUANT_TBL));

-    MEMCOPY(qtbl, cinfo->quant_tbl_ptrs[qtblno], SIZEOF(JQUANT_TBL));

-    compptr->quant_table = qtbl;

-  }

-}

-

-

-/*

- * Initialize the input modules to read a scan of compressed data.

- * The first call to this is done by jdmaster.c after initializing

- * the entire decompressor (during jpeg_start_decompress).

- * Subsequent calls come from consume_markers, below.

- */

-

-METHODDEF void

-start_input_pass (j_decompress_ptr cinfo)

-{

-  per_scan_setup(cinfo);

-  latch_quant_tables(cinfo);

-  (*cinfo->entropy->start_pass) (cinfo);

-  (*cinfo->coef->start_input_pass) (cinfo);

-  cinfo->inputctl->consume_input = cinfo->coef->consume_data;

-}

-

-

-/*

- * Finish up after inputting a compressed-data scan.

- * This is called by the coefficient controller after it's read all

- * the expected data of the scan.

- */

-

-METHODDEF void

-finish_input_pass (j_decompress_ptr cinfo)

-{

-  cinfo->inputctl->consume_input = consume_markers;

-}

-

-

-/*

- * Read JPEG markers before, between, or after compressed-data scans.

- * Change state as necessary when a new scan is reached.

- * Return value is JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI.

- *

- * The consume_input method pointer points either here or to the

- * coefficient controller's consume_data routine, depending on whether

- * we are reading a compressed data segment or inter-segment markers.

- */

-

-METHODDEF int

-consume_markers (j_decompress_ptr cinfo)

-{

-  my_inputctl_ptr inputctl = (my_inputctl_ptr) cinfo->inputctl;

-  int val;

-

-  if (inputctl->pub.eoi_reached) /* After hitting EOI, read no further */

-    return JPEG_REACHED_EOI;

-

-  val = (*cinfo->marker->read_markers) (cinfo);

-

-  switch (val) {

-  case JPEG_REACHED_SOS:	/* Found SOS */

-    if (inputctl->inheaders) {	/* 1st SOS */

-      initial_setup(cinfo);

-      inputctl->inheaders = FALSE;

-      /* Note: start_input_pass must be called by jdmaster.c

-       * before any more input can be consumed.  jdapi.c is

-       * responsible for enforcing this sequencing.

-       */

-    } else {			/* 2nd or later SOS marker */

-      if (! inputctl->pub.has_multiple_scans)

-	ERREXIT(cinfo, JERR_EOI_EXPECTED); /* Oops, I wasn't expecting this! */

-      start_input_pass(cinfo);

-    }

-    break;

-  case JPEG_REACHED_EOI:	/* Found EOI */

-    inputctl->pub.eoi_reached = TRUE;

-    if (inputctl->inheaders) {	/* Tables-only datastream, apparently */

-      if (cinfo->marker->saw_SOF)

-	ERREXIT(cinfo, JERR_SOF_NO_SOS);

-    } else {

-      /* Prevent infinite loop in coef ctlr's decompress_data routine

-       * if user set output_scan_number larger than number of scans.

-       */

-      if (cinfo->output_scan_number > cinfo->input_scan_number)

-	cinfo->output_scan_number = cinfo->input_scan_number;

-    }

-    break;

-  case JPEG_SUSPENDED:

-    break;

-  }

-

-  return val;

-}

-

-

-/*

- * Reset state to begin a fresh datastream.

- */

-

-METHODDEF void

-reset_input_controller (j_decompress_ptr cinfo)

-{

-  my_inputctl_ptr inputctl = (my_inputctl_ptr) cinfo->inputctl;

-

-  inputctl->pub.consume_input = consume_markers;

-  inputctl->pub.has_multiple_scans = FALSE; /* "unknown" would be better */

-  inputctl->pub.eoi_reached = FALSE;

-  inputctl->inheaders = TRUE;

-  /* Reset other modules */

-  (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo);

-  (*cinfo->marker->reset_marker_reader) (cinfo);

-  /* Reset progression state -- would be cleaner if entropy decoder did this */

-  cinfo->coef_bits = NULL;

-}

-

-

-/*

- * Initialize the input controller module.

- * This is called only once, when the decompression object is created.

- */

-

-GLOBAL void

-jinit_input_controller (j_decompress_ptr cinfo)

-{

-  my_inputctl_ptr inputctl;

-

-  /* Create subobject in permanent pool */

-  inputctl = (my_inputctl_ptr)

-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,

-				SIZEOF(my_input_controller));

-  cinfo->inputctl = (struct jpeg_input_controller *) inputctl;

-  /* Initialize method pointers */

-  inputctl->pub.consume_input = consume_markers;

-  inputctl->pub.reset_input_controller = reset_input_controller;

-  inputctl->pub.start_input_pass = start_input_pass;

-  inputctl->pub.finish_input_pass = finish_input_pass;

-  /* Initialize state: can't use reset_input_controller since we don't

-   * want to try to reset other modules yet.

-   */

-  inputctl->pub.has_multiple_scans = FALSE; /* "unknown" would be better */

-  inputctl->pub.eoi_reached = FALSE;

-  inputctl->inheaders = TRUE;

-}

+/*
+ * jdinput.c
+ *
+ * Copyright (C) 1991-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains input control logic for the JPEG decompressor.
+ * These routines are concerned with controlling the decompressor's input
+ * processing (marker reading and coefficient decoding).  The actual input
+ * reading is done in jdmarker.c, jdhuff.c, and jdphuff.c.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+
+
+/* Private state */
+
+typedef struct {
+  struct jpeg_input_controller pub; /* public fields */
+
+  boolean inheaders;		/* TRUE until first SOS is reached */
+} my_input_controller;
+
+typedef my_input_controller * my_inputctl_ptr;
+
+
+/* Forward declarations */
+METHODDEF int consume_markers JPP((j_decompress_ptr cinfo));
+
+
+/*
+ * Routines to calculate various quantities related to the size of the image.
+ */
+
+LOCAL void
+initial_setup (j_decompress_ptr cinfo)
+/* Called once, when first SOS marker is reached */
+{
+  int ci;
+  jpeg_component_info *compptr;
+
+  /* Make sure image isn't bigger than I can handle */
+  if ((long) cinfo->image_height > (long) JPEG_MAX_DIMENSION ||
+      (long) cinfo->image_width > (long) JPEG_MAX_DIMENSION)
+    ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION);
+
+  /* For now, precision must match compiled-in value... */
+  if (cinfo->data_precision != BITS_IN_JSAMPLE)
+    ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);
+
+  /* Check that number of components won't exceed internal array sizes */
+  if (cinfo->num_components > MAX_COMPONENTS)
+    ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,
+	     MAX_COMPONENTS);
+
+  /* Compute maximum sampling factors; check factor validity */
+  cinfo->max_h_samp_factor = 1;
+  cinfo->max_v_samp_factor = 1;
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    if (compptr->h_samp_factor<=0 || compptr->h_samp_factor>MAX_SAMP_FACTOR ||
+	compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR)
+      ERREXIT(cinfo, JERR_BAD_SAMPLING);
+    cinfo->max_h_samp_factor = MAX(cinfo->max_h_samp_factor,
+				   compptr->h_samp_factor);
+    cinfo->max_v_samp_factor = MAX(cinfo->max_v_samp_factor,
+				   compptr->v_samp_factor);
+  }
+
+  /* We initialize DCT_scaled_size and min_DCT_scaled_size to DCTSIZE.
+   * In the full decompressor, this will be overridden by jdmaster.c;
+   * but in the transcoder, jdmaster.c is not used, so we must do it here.
+   */
+  cinfo->min_DCT_scaled_size = DCTSIZE;
+
+  /* Compute dimensions of components */
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    compptr->DCT_scaled_size = DCTSIZE;
+    /* Size in DCT blocks */
+    compptr->width_in_blocks = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor,
+		    (long) (cinfo->max_h_samp_factor * DCTSIZE));
+    compptr->height_in_blocks = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor,
+		    (long) (cinfo->max_v_samp_factor * DCTSIZE));
+    /* downsampled_width and downsampled_height will also be overridden by
+     * jdmaster.c if we are doing full decompression.  The transcoder library
+     * doesn't use these values, but the calling application might.
+     */
+    /* Size in samples */
+    compptr->downsampled_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor,
+		    (long) cinfo->max_h_samp_factor);
+    compptr->downsampled_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor,
+		    (long) cinfo->max_v_samp_factor);
+    /* Mark component needed, until color conversion says otherwise */
+    compptr->component_needed = TRUE;
+    /* Mark no quantization table yet saved for component */
+    compptr->quant_table = NULL;
+  }
+
+  /* Compute number of fully interleaved MCU rows. */
+  cinfo->total_iMCU_rows = (JDIMENSION)
+    jdiv_round_up((long) cinfo->image_height,
+		  (long) (cinfo->max_v_samp_factor*DCTSIZE));
+
+  /* Decide whether file contains multiple scans */
+  if (cinfo->comps_in_scan < cinfo->num_components || cinfo->progressive_mode)
+    cinfo->inputctl->has_multiple_scans = TRUE;
+  else
+    cinfo->inputctl->has_multiple_scans = FALSE;
+}
+
+
+LOCAL void
+per_scan_setup (j_decompress_ptr cinfo)
+/* Do computations that are needed before processing a JPEG scan */
+/* cinfo->comps_in_scan and cinfo->cur_comp_info[] were set from SOS marker */
+{
+  int ci, mcublks, tmp;
+  jpeg_component_info *compptr;
+  
+  if (cinfo->comps_in_scan == 1) {
+    
+    /* Noninterleaved (single-component) scan */
+    compptr = cinfo->cur_comp_info[0];
+    
+    /* Overall image size in MCUs */
+    cinfo->MCUs_per_row = compptr->width_in_blocks;
+    cinfo->MCU_rows_in_scan = compptr->height_in_blocks;
+    
+    /* For noninterleaved scan, always one block per MCU */
+    compptr->MCU_width = 1;
+    compptr->MCU_height = 1;
+    compptr->MCU_blocks = 1;
+    compptr->MCU_sample_width = compptr->DCT_scaled_size;
+    compptr->last_col_width = 1;
+    /* For noninterleaved scans, it is convenient to define last_row_height
+     * as the number of block rows present in the last iMCU row.
+     */
+    tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
+    if (tmp == 0) tmp = compptr->v_samp_factor;
+    compptr->last_row_height = tmp;
+    
+    /* Prepare array describing MCU composition */
+    cinfo->blocks_in_MCU = 1;
+    cinfo->MCU_membership[0] = 0;
+    
+  } else {
+    
+    /* Interleaved (multi-component) scan */
+    if (cinfo->comps_in_scan <= 0 || cinfo->comps_in_scan > MAX_COMPS_IN_SCAN)
+      ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->comps_in_scan,
+	       MAX_COMPS_IN_SCAN);
+    
+    /* Overall image size in MCUs */
+    cinfo->MCUs_per_row = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width,
+		    (long) (cinfo->max_h_samp_factor*DCTSIZE));
+    cinfo->MCU_rows_in_scan = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height,
+		    (long) (cinfo->max_v_samp_factor*DCTSIZE));
+    
+    cinfo->blocks_in_MCU = 0;
+    
+    for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
+      compptr = cinfo->cur_comp_info[ci];
+      /* Sampling factors give # of blocks of component in each MCU */
+      compptr->MCU_width = compptr->h_samp_factor;
+      compptr->MCU_height = compptr->v_samp_factor;
+      compptr->MCU_blocks = compptr->MCU_width * compptr->MCU_height;
+      compptr->MCU_sample_width = compptr->MCU_width * compptr->DCT_scaled_size;
+      /* Figure number of non-dummy blocks in last MCU column & row */
+      tmp = (int) (compptr->width_in_blocks % compptr->MCU_width);
+      if (tmp == 0) tmp = compptr->MCU_width;
+      compptr->last_col_width = tmp;
+      tmp = (int) (compptr->height_in_blocks % compptr->MCU_height);
+      if (tmp == 0) tmp = compptr->MCU_height;
+      compptr->last_row_height = tmp;
+      /* Prepare array describing MCU composition */
+      mcublks = compptr->MCU_blocks;
+      if (cinfo->blocks_in_MCU + mcublks > D_MAX_BLOCKS_IN_MCU)
+	ERREXIT(cinfo, JERR_BAD_MCU_SIZE);
+      while (mcublks-- > 0) {
+	cinfo->MCU_membership[cinfo->blocks_in_MCU++] = ci;
+      }
+    }
+    
+  }
+}
+
+
+/*
+ * Save away a copy of the Q-table referenced by each component present
+ * in the current scan, unless already saved during a prior scan.
+ *
+ * In a multiple-scan JPEG file, the encoder could assign different components
+ * the same Q-table slot number, but change table definitions between scans
+ * so that each component uses a different Q-table.  (The IJG encoder is not
+ * currently capable of doing this, but other encoders might.)  Since we want
+ * to be able to dequantize all the components at the end of the file, this
+ * means that we have to save away the table actually used for each component.
+ * We do this by copying the table at the start of the first scan containing
+ * the component.
+ * The JPEG spec prohibits the encoder from changing the contents of a Q-table
+ * slot between scans of a component using that slot.  If the encoder does so
+ * anyway, this decoder will simply use the Q-table values that were current
+ * at the start of the first scan for the component.
+ *
+ * The decompressor output side looks only at the saved quant tables,
+ * not at the current Q-table slots.
+ */
+
+LOCAL void
+latch_quant_tables (j_decompress_ptr cinfo)
+{
+  int ci, qtblno;
+  jpeg_component_info *compptr;
+  JQUANT_TBL * qtbl;
+
+  for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
+    compptr = cinfo->cur_comp_info[ci];
+    /* No work if we already saved Q-table for this component */
+    if (compptr->quant_table != NULL)
+      continue;
+    /* Make sure specified quantization table is present */
+    qtblno = compptr->quant_tbl_no;
+    if (qtblno < 0 || qtblno >= NUM_QUANT_TBLS ||
+	cinfo->quant_tbl_ptrs[qtblno] == NULL)
+      ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, qtblno);
+    /* OK, save away the quantization table */
+    qtbl = (JQUANT_TBL *)
+      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				  SIZEOF(JQUANT_TBL));
+    MEMCOPY(qtbl, cinfo->quant_tbl_ptrs[qtblno], SIZEOF(JQUANT_TBL));
+    compptr->quant_table = qtbl;
+  }
+}
+
+
+/*
+ * Initialize the input modules to read a scan of compressed data.
+ * The first call to this is done by jdmaster.c after initializing
+ * the entire decompressor (during jpeg_start_decompress).
+ * Subsequent calls come from consume_markers, below.
+ */
+
+METHODDEF void
+start_input_pass (j_decompress_ptr cinfo)
+{
+  per_scan_setup(cinfo);
+  latch_quant_tables(cinfo);
+  (*cinfo->entropy->start_pass) (cinfo);
+  (*cinfo->coef->start_input_pass) (cinfo);
+  cinfo->inputctl->consume_input = cinfo->coef->consume_data;
+}
+
+
+/*
+ * Finish up after inputting a compressed-data scan.
+ * This is called by the coefficient controller after it's read all
+ * the expected data of the scan.
+ */
+
+METHODDEF void
+finish_input_pass (j_decompress_ptr cinfo)
+{
+  cinfo->inputctl->consume_input = consume_markers;
+}
+
+
+/*
+ * Read JPEG markers before, between, or after compressed-data scans.
+ * Change state as necessary when a new scan is reached.
+ * Return value is JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI.
+ *
+ * The consume_input method pointer points either here or to the
+ * coefficient controller's consume_data routine, depending on whether
+ * we are reading a compressed data segment or inter-segment markers.
+ */
+
+METHODDEF int
+consume_markers (j_decompress_ptr cinfo)
+{
+  my_inputctl_ptr inputctl = (my_inputctl_ptr) cinfo->inputctl;
+  int val;
+
+  if (inputctl->pub.eoi_reached) /* After hitting EOI, read no further */
+    return JPEG_REACHED_EOI;
+
+  val = (*cinfo->marker->read_markers) (cinfo);
+
+  switch (val) {
+  case JPEG_REACHED_SOS:	/* Found SOS */
+    if (inputctl->inheaders) {	/* 1st SOS */
+      initial_setup(cinfo);
+      inputctl->inheaders = FALSE;
+      /* Note: start_input_pass must be called by jdmaster.c
+       * before any more input can be consumed.  jdapi.c is
+       * responsible for enforcing this sequencing.
+       */
+    } else {			/* 2nd or later SOS marker */
+      if (! inputctl->pub.has_multiple_scans)
+	ERREXIT(cinfo, JERR_EOI_EXPECTED); /* Oops, I wasn't expecting this! */
+      start_input_pass(cinfo);
+    }
+    break;
+  case JPEG_REACHED_EOI:	/* Found EOI */
+    inputctl->pub.eoi_reached = TRUE;
+    if (inputctl->inheaders) {	/* Tables-only datastream, apparently */
+      if (cinfo->marker->saw_SOF)
+	ERREXIT(cinfo, JERR_SOF_NO_SOS);
+    } else {
+      /* Prevent infinite loop in coef ctlr's decompress_data routine
+       * if user set output_scan_number larger than number of scans.
+       */
+      if (cinfo->output_scan_number > cinfo->input_scan_number)
+	cinfo->output_scan_number = cinfo->input_scan_number;
+    }
+    break;
+  case JPEG_SUSPENDED:
+    break;
+  }
+
+  return val;
+}
+
+
+/*
+ * Reset state to begin a fresh datastream.
+ */
+
+METHODDEF void
+reset_input_controller (j_decompress_ptr cinfo)
+{
+  my_inputctl_ptr inputctl = (my_inputctl_ptr) cinfo->inputctl;
+
+  inputctl->pub.consume_input = consume_markers;
+  inputctl->pub.has_multiple_scans = FALSE; /* "unknown" would be better */
+  inputctl->pub.eoi_reached = FALSE;
+  inputctl->inheaders = TRUE;
+  /* Reset other modules */
+  (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo);
+  (*cinfo->marker->reset_marker_reader) (cinfo);
+  /* Reset progression state -- would be cleaner if entropy decoder did this */
+  cinfo->coef_bits = NULL;
+}
+
+
+/*
+ * Initialize the input controller module.
+ * This is called only once, when the decompression object is created.
+ */
+
+GLOBAL void
+jinit_input_controller (j_decompress_ptr cinfo)
+{
+  my_inputctl_ptr inputctl;
+
+  /* Create subobject in permanent pool */
+  inputctl = (my_inputctl_ptr)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
+				SIZEOF(my_input_controller));
+  cinfo->inputctl = (struct jpeg_input_controller *) inputctl;
+  /* Initialize method pointers */
+  inputctl->pub.consume_input = consume_markers;
+  inputctl->pub.reset_input_controller = reset_input_controller;
+  inputctl->pub.start_input_pass = start_input_pass;
+  inputctl->pub.finish_input_pass = finish_input_pass;
+  /* Initialize state: can't use reset_input_controller since we don't
+   * want to try to reset other modules yet.
+   */
+  inputctl->pub.has_multiple_scans = FALSE; /* "unknown" would be better */
+  inputctl->pub.eoi_reached = FALSE;
+  inputctl->inheaders = TRUE;
+}
diff --git a/libs/jpeg6/jdmainct.cpp b/libs/jpeg6/jdmainct.cpp
index c4e0d54..f3a06e5 100755
--- a/libs/jpeg6/jdmainct.cpp
+++ b/libs/jpeg6/jdmainct.cpp
@@ -1,512 +1,512 @@
-/*

- * jdmainct.c

- *

- * Copyright (C) 1994-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains the main buffer controller for decompression.

- * The main buffer lies between the JPEG decompressor proper and the

- * post-processor; it holds downsampled data in the JPEG colorspace.

- *

- * Note that this code is bypassed in raw-data mode, since the application

- * supplies the equivalent of the main buffer in that case.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-

-

-/*

- * In the current system design, the main buffer need never be a full-image

- * buffer; any full-height buffers will be found inside the coefficient or

- * postprocessing controllers.  Nonetheless, the main controller is not

- * trivial.  Its responsibility is to provide context rows for upsampling/

- * rescaling, and doing this in an efficient fashion is a bit tricky.

- *

- * Postprocessor input data is counted in "row groups".  A row group

- * is defined to be (v_samp_factor * DCT_scaled_size / min_DCT_scaled_size)

- * sample rows of each component.  (We require DCT_scaled_size values to be

- * chosen such that these numbers are integers.  In practice DCT_scaled_size

- * values will likely be powers of two, so we actually have the stronger

- * condition that DCT_scaled_size / min_DCT_scaled_size is an integer.)

- * Upsampling will typically produce max_v_samp_factor pixel rows from each

- * row group (times any additional scale factor that the upsampler is

- * applying).

- *

- * The coefficient controller will deliver data to us one iMCU row at a time;

- * each iMCU row contains v_samp_factor * DCT_scaled_size sample rows, or

- * exactly min_DCT_scaled_size row groups.  (This amount of data corresponds

- * to one row of MCUs when the image is fully interleaved.)  Note that the

- * number of sample rows varies across components, but the number of row

- * groups does not.  Some garbage sample rows may be included in the last iMCU

- * row at the bottom of the image.

- *

- * Depending on the vertical scaling algorithm used, the upsampler may need

- * access to the sample row(s) above and below its current input row group.

- * The upsampler is required to set need_context_rows TRUE at global selection

- * time if so.  When need_context_rows is FALSE, this controller can simply

- * obtain one iMCU row at a time from the coefficient controller and dole it

- * out as row groups to the postprocessor.

- *

- * When need_context_rows is TRUE, this controller guarantees that the buffer

- * passed to postprocessing contains at least one row group's worth of samples

- * above and below the row group(s) being processed.  Note that the context

- * rows "above" the first passed row group appear at negative row offsets in

- * the passed buffer.  At the top and bottom of the image, the required

- * context rows are manufactured by duplicating the first or last real sample

- * row; this avoids having special cases in the upsampling inner loops.

- *

- * The amount of context is fixed at one row group just because that's a

- * convenient number for this controller to work with.  The existing

- * upsamplers really only need one sample row of context.  An upsampler

- * supporting arbitrary output rescaling might wish for more than one row

- * group of context when shrinking the image; tough, we don't handle that.

- * (This is justified by the assumption that downsizing will be handled mostly

- * by adjusting the DCT_scaled_size values, so that the actual scale factor at

- * the upsample step needn't be much less than one.)

- *

- * To provide the desired context, we have to retain the last two row groups

- * of one iMCU row while reading in the next iMCU row.  (The last row group

- * can't be processed until we have another row group for its below-context,

- * and so we have to save the next-to-last group too for its above-context.)

- * We could do this most simply by copying data around in our buffer, but

- * that'd be very slow.  We can avoid copying any data by creating a rather

- * strange pointer structure.  Here's how it works.  We allocate a workspace

- * consisting of M+2 row groups (where M = min_DCT_scaled_size is the number

- * of row groups per iMCU row).  We create two sets of redundant pointers to

- * the workspace.  Labeling the physical row groups 0 to M+1, the synthesized

- * pointer lists look like this:

- *                   M+1                          M-1

- * master pointer --> 0         master pointer --> 0

- *                    1                            1

- *                   ...                          ...

- *                   M-3                          M-3

- *                   M-2                           M

- *                   M-1                          M+1

- *                    M                           M-2

- *                   M+1                          M-1

- *                    0                            0

- * We read alternate iMCU rows using each master pointer; thus the last two

- * row groups of the previous iMCU row remain un-overwritten in the workspace.

- * The pointer lists are set up so that the required context rows appear to

- * be adjacent to the proper places when we pass the pointer lists to the

- * upsampler.

- *

- * The above pictures describe the normal state of the pointer lists.

- * At top and bottom of the image, we diddle the pointer lists to duplicate

- * the first or last sample row as necessary (this is cheaper than copying

- * sample rows around).

- *

- * This scheme breaks down if M < 2, ie, min_DCT_scaled_size is 1.  In that

- * situation each iMCU row provides only one row group so the buffering logic

- * must be different (eg, we must read two iMCU rows before we can emit the

- * first row group).  For now, we simply do not support providing context

- * rows when min_DCT_scaled_size is 1.  That combination seems unlikely to

- * be worth providing --- if someone wants a 1/8th-size preview, they probably

- * want it quick and dirty, so a context-free upsampler is sufficient.

- */

-

-

-/* Private buffer controller object */

-

-typedef struct {

-  struct jpeg_d_main_controller pub; /* public fields */

-

-  /* Pointer to allocated workspace (M or M+2 row groups). */

-  JSAMPARRAY buffer[MAX_COMPONENTS];

-

-  boolean buffer_full;		/* Have we gotten an iMCU row from decoder? */

-  JDIMENSION rowgroup_ctr;	/* counts row groups output to postprocessor */

-

-  /* Remaining fields are only used in the context case. */

-

-  /* These are the master pointers to the funny-order pointer lists. */

-  JSAMPIMAGE xbuffer[2];	/* pointers to weird pointer lists */

-

-  int whichptr;			/* indicates which pointer set is now in use */

-  int context_state;		/* process_data state machine status */

-  JDIMENSION rowgroups_avail;	/* row groups available to postprocessor */

-  JDIMENSION iMCU_row_ctr;	/* counts iMCU rows to detect image top/bot */

-} my_main_controller;

-

-typedef my_main_controller * my_main_ptr;

-

-/* context_state values: */

-#define CTX_PREPARE_FOR_IMCU	0	/* need to prepare for MCU row */

-#define CTX_PROCESS_IMCU	1	/* feeding iMCU to postprocessor */

-#define CTX_POSTPONED_ROW	2	/* feeding postponed row group */

-

-

-/* Forward declarations */

-METHODDEF void process_data_simple_main

-	JPP((j_decompress_ptr cinfo, JSAMPARRAY output_buf,

-	     JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail));

-METHODDEF void process_data_context_main

-	JPP((j_decompress_ptr cinfo, JSAMPARRAY output_buf,

-	     JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail));

-#ifdef QUANT_2PASS_SUPPORTED

-METHODDEF void process_data_crank_post

-	JPP((j_decompress_ptr cinfo, JSAMPARRAY output_buf,

-	     JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail));

-#endif

-

-

-LOCAL void

-alloc_funny_pointers (j_decompress_ptr cinfo)

-/* Allocate space for the funny pointer lists.

- * This is done only once, not once per pass.

- */

-{

-  my_main_ptr main = (my_main_ptr) cinfo->main;

-  int ci, rgroup;

-  int M = cinfo->min_DCT_scaled_size;

-  jpeg_component_info *compptr;

-  JSAMPARRAY xbuf;

-

-  /* Get top-level space for component array pointers.

-   * We alloc both arrays with one call to save a few cycles.

-   */

-  main->xbuffer[0] = (JSAMPIMAGE)

-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				cinfo->num_components * 2 * SIZEOF(JSAMPARRAY));

-  main->xbuffer[1] = main->xbuffer[0] + cinfo->num_components;

-

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) /

-      cinfo->min_DCT_scaled_size; /* height of a row group of component */

-    /* Get space for pointer lists --- M+4 row groups in each list.

-     * We alloc both pointer lists with one call to save a few cycles.

-     */

-    xbuf = (JSAMPARRAY)

-      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				  2 * (rgroup * (M + 4)) * SIZEOF(JSAMPROW));

-    xbuf += rgroup;		/* want one row group at negative offsets */

-    main->xbuffer[0][ci] = xbuf;

-    xbuf += rgroup * (M + 4);

-    main->xbuffer[1][ci] = xbuf;

-  }

-}

-

-

-LOCAL void

-make_funny_pointers (j_decompress_ptr cinfo)

-/* Create the funny pointer lists discussed in the comments above.

- * The actual workspace is already allocated (in main->buffer),

- * and the space for the pointer lists is allocated too.

- * This routine just fills in the curiously ordered lists.

- * This will be repeated at the beginning of each pass.

- */

-{

-  my_main_ptr main = (my_main_ptr) cinfo->main;

-  int ci, i, rgroup;

-  int M = cinfo->min_DCT_scaled_size;

-  jpeg_component_info *compptr;

-  JSAMPARRAY buf, xbuf0, xbuf1;

-

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) /

-      cinfo->min_DCT_scaled_size; /* height of a row group of component */

-    xbuf0 = main->xbuffer[0][ci];

-    xbuf1 = main->xbuffer[1][ci];

-    /* First copy the workspace pointers as-is */

-    buf = main->buffer[ci];

-    for (i = 0; i < rgroup * (M + 2); i++) {

-      xbuf0[i] = xbuf1[i] = buf[i];

-    }

-    /* In the second list, put the last four row groups in swapped order */

-    for (i = 0; i < rgroup * 2; i++) {

-      xbuf1[rgroup*(M-2) + i] = buf[rgroup*M + i];

-      xbuf1[rgroup*M + i] = buf[rgroup*(M-2) + i];

-    }

-    /* The wraparound pointers at top and bottom will be filled later

-     * (see set_wraparound_pointers, below).  Initially we want the "above"

-     * pointers to duplicate the first actual data line.  This only needs

-     * to happen in xbuffer[0].

-     */

-    for (i = 0; i < rgroup; i++) {

-      xbuf0[i - rgroup] = xbuf0[0];

-    }

-  }

-}

-

-

-LOCAL void

-set_wraparound_pointers (j_decompress_ptr cinfo)

-/* Set up the "wraparound" pointers at top and bottom of the pointer lists.

- * This changes the pointer list state from top-of-image to the normal state.

- */

-{

-  my_main_ptr main = (my_main_ptr) cinfo->main;

-  int ci, i, rgroup;

-  int M = cinfo->min_DCT_scaled_size;

-  jpeg_component_info *compptr;

-  JSAMPARRAY xbuf0, xbuf1;

-

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) /

-      cinfo->min_DCT_scaled_size; /* height of a row group of component */

-    xbuf0 = main->xbuffer[0][ci];

-    xbuf1 = main->xbuffer[1][ci];

-    for (i = 0; i < rgroup; i++) {

-      xbuf0[i - rgroup] = xbuf0[rgroup*(M+1) + i];

-      xbuf1[i - rgroup] = xbuf1[rgroup*(M+1) + i];

-      xbuf0[rgroup*(M+2) + i] = xbuf0[i];

-      xbuf1[rgroup*(M+2) + i] = xbuf1[i];

-    }

-  }

-}

-

-

-LOCAL void

-set_bottom_pointers (j_decompress_ptr cinfo)

-/* Change the pointer lists to duplicate the last sample row at the bottom

- * of the image.  whichptr indicates which xbuffer holds the final iMCU row.

- * Also sets rowgroups_avail to indicate number of nondummy row groups in row.

- */

-{

-  my_main_ptr main = (my_main_ptr) cinfo->main;

-  int ci, i, rgroup, iMCUheight, rows_left;

-  jpeg_component_info *compptr;

-  JSAMPARRAY xbuf;

-

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    /* Count sample rows in one iMCU row and in one row group */

-    iMCUheight = compptr->v_samp_factor * compptr->DCT_scaled_size;

-    rgroup = iMCUheight / cinfo->min_DCT_scaled_size;

-    /* Count nondummy sample rows remaining for this component */

-    rows_left = (int) (compptr->downsampled_height % (JDIMENSION) iMCUheight);

-    if (rows_left == 0) rows_left = iMCUheight;

-    /* Count nondummy row groups.  Should get same answer for each component,

-     * so we need only do it once.

-     */

-    if (ci == 0) {

-      main->rowgroups_avail = (JDIMENSION) ((rows_left-1) / rgroup + 1);

-    }

-    /* Duplicate the last real sample row rgroup*2 times; this pads out the

-     * last partial rowgroup and ensures at least one full rowgroup of context.

-     */

-    xbuf = main->xbuffer[main->whichptr][ci];

-    for (i = 0; i < rgroup * 2; i++) {

-      xbuf[rows_left + i] = xbuf[rows_left-1];

-    }

-  }

-}

-

-

-/*

- * Initialize for a processing pass.

- */

-

-METHODDEF void

-start_pass_main (j_decompress_ptr cinfo, J_BUF_MODE pass_mode)

-{

-  my_main_ptr main = (my_main_ptr) cinfo->main;

-

-  switch (pass_mode) {

-  case JBUF_PASS_THRU:

-    if (cinfo->upsample->need_context_rows) {

-      main->pub.process_data = process_data_context_main;

-      make_funny_pointers(cinfo); /* Create the xbuffer[] lists */

-      main->whichptr = 0;	/* Read first iMCU row into xbuffer[0] */

-      main->context_state = CTX_PREPARE_FOR_IMCU;

-      main->iMCU_row_ctr = 0;

-    } else {

-      /* Simple case with no context needed */

-      main->pub.process_data = process_data_simple_main;

-    }

-    main->buffer_full = FALSE;	/* Mark buffer empty */

-    main->rowgroup_ctr = 0;

-    break;

-#ifdef QUANT_2PASS_SUPPORTED

-  case JBUF_CRANK_DEST:

-    /* For last pass of 2-pass quantization, just crank the postprocessor */

-    main->pub.process_data = process_data_crank_post;

-    break;

-#endif

-  default:

-    ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);

-    break;

-  }

-}

-

-

-/*

- * Process some data.

- * This handles the simple case where no context is required.

- */

-

-METHODDEF void

-process_data_simple_main (j_decompress_ptr cinfo,

-			  JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,

-			  JDIMENSION out_rows_avail)

-{

-  my_main_ptr main = (my_main_ptr) cinfo->main;

-  JDIMENSION rowgroups_avail;

-

-  /* Read input data if we haven't filled the main buffer yet */

-  if (! main->buffer_full) {

-    if (! (*cinfo->coef->decompress_data) (cinfo, main->buffer))

-      return;			/* suspension forced, can do nothing more */

-    main->buffer_full = TRUE;	/* OK, we have an iMCU row to work with */

-  }

-

-  /* There are always min_DCT_scaled_size row groups in an iMCU row. */

-  rowgroups_avail = (JDIMENSION) cinfo->min_DCT_scaled_size;

-  /* Note: at the bottom of the image, we may pass extra garbage row groups

-   * to the postprocessor.  The postprocessor has to check for bottom

-   * of image anyway (at row resolution), so no point in us doing it too.

-   */

-

-  /* Feed the postprocessor */

-  (*cinfo->post->post_process_data) (cinfo, main->buffer,

-				     &main->rowgroup_ctr, rowgroups_avail,

-				     output_buf, out_row_ctr, out_rows_avail);

-

-  /* Has postprocessor consumed all the data yet? If so, mark buffer empty */

-  if (main->rowgroup_ctr >= rowgroups_avail) {

-    main->buffer_full = FALSE;

-    main->rowgroup_ctr = 0;

-  }

-}

-

-

-/*

- * Process some data.

- * This handles the case where context rows must be provided.

- */

-

-METHODDEF void

-process_data_context_main (j_decompress_ptr cinfo,

-			   JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,

-			   JDIMENSION out_rows_avail)

-{

-  my_main_ptr main = (my_main_ptr) cinfo->main;

-

-  /* Read input data if we haven't filled the main buffer yet */

-  if (! main->buffer_full) {

-    if (! (*cinfo->coef->decompress_data) (cinfo,

-					   main->xbuffer[main->whichptr]))

-      return;			/* suspension forced, can do nothing more */

-    main->buffer_full = TRUE;	/* OK, we have an iMCU row to work with */

-    main->iMCU_row_ctr++;	/* count rows received */

-  }

-

-  /* Postprocessor typically will not swallow all the input data it is handed

-   * in one call (due to filling the output buffer first).  Must be prepared

-   * to exit and restart.  This switch lets us keep track of how far we got.

-   * Note that each case falls through to the next on successful completion.

-   */

-  switch (main->context_state) {

-  case CTX_POSTPONED_ROW:

-    /* Call postprocessor using previously set pointers for postponed row */

-    (*cinfo->post->post_process_data) (cinfo, main->xbuffer[main->whichptr],

-			&main->rowgroup_ctr, main->rowgroups_avail,

-			output_buf, out_row_ctr, out_rows_avail);

-    if (main->rowgroup_ctr < main->rowgroups_avail)

-      return;			/* Need to suspend */

-    main->context_state = CTX_PREPARE_FOR_IMCU;

-    if (*out_row_ctr >= out_rows_avail)

-      return;			/* Postprocessor exactly filled output buf */

-    /*FALLTHROUGH*/

-  case CTX_PREPARE_FOR_IMCU:

-    /* Prepare to process first M-1 row groups of this iMCU row */

-    main->rowgroup_ctr = 0;

-    main->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_scaled_size - 1);

-    /* Check for bottom of image: if so, tweak pointers to "duplicate"

-     * the last sample row, and adjust rowgroups_avail to ignore padding rows.

-     */

-    if (main->iMCU_row_ctr == cinfo->total_iMCU_rows)

-      set_bottom_pointers(cinfo);

-    main->context_state = CTX_PROCESS_IMCU;

-    /*FALLTHROUGH*/

-  case CTX_PROCESS_IMCU:

-    /* Call postprocessor using previously set pointers */

-    (*cinfo->post->post_process_data) (cinfo, main->xbuffer[main->whichptr],

-			&main->rowgroup_ctr, main->rowgroups_avail,

-			output_buf, out_row_ctr, out_rows_avail);

-    if (main->rowgroup_ctr < main->rowgroups_avail)

-      return;			/* Need to suspend */

-    /* After the first iMCU, change wraparound pointers to normal state */

-    if (main->iMCU_row_ctr == 1)

-      set_wraparound_pointers(cinfo);

-    /* Prepare to load new iMCU row using other xbuffer list */

-    main->whichptr ^= 1;	/* 0=>1 or 1=>0 */

-    main->buffer_full = FALSE;

-    /* Still need to process last row group of this iMCU row, */

-    /* which is saved at index M+1 of the other xbuffer */

-    main->rowgroup_ctr = (JDIMENSION) (cinfo->min_DCT_scaled_size + 1);

-    main->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_scaled_size + 2);

-    main->context_state = CTX_POSTPONED_ROW;

-  }

-}

-

-

-/*

- * Process some data.

- * Final pass of two-pass quantization: just call the postprocessor.

- * Source data will be the postprocessor controller's internal buffer.

- */

-

-#ifdef QUANT_2PASS_SUPPORTED

-

-METHODDEF void

-process_data_crank_post (j_decompress_ptr cinfo,

-			 JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,

-			 JDIMENSION out_rows_avail)

-{

-  (*cinfo->post->post_process_data) (cinfo, (JSAMPIMAGE) NULL,

-				     (JDIMENSION *) NULL, (JDIMENSION) 0,

-				     output_buf, out_row_ctr, out_rows_avail);

-}

-

-#endif /* QUANT_2PASS_SUPPORTED */

-

-

-/*

- * Initialize main buffer controller.

- */

-

-GLOBAL void

-jinit_d_main_controller (j_decompress_ptr cinfo, boolean need_full_buffer)

-{

-  my_main_ptr main;

-  int ci, rgroup, ngroups;

-  jpeg_component_info *compptr;

-

-  main = (my_main_ptr)

-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				SIZEOF(my_main_controller));

-  cinfo->main = (struct jpeg_d_main_controller *) main;

-  main->pub.start_pass = start_pass_main;

-

-  if (need_full_buffer)		/* shouldn't happen */

-    ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);

-

-  /* Allocate the workspace.

-   * ngroups is the number of row groups we need.

-   */

-  if (cinfo->upsample->need_context_rows) {

-    if (cinfo->min_DCT_scaled_size < 2) /* unsupported, see comments above */

-      ERREXIT(cinfo, JERR_NOTIMPL);

-    alloc_funny_pointers(cinfo); /* Alloc space for xbuffer[] lists */

-    ngroups = cinfo->min_DCT_scaled_size + 2;

-  } else {

-    ngroups = cinfo->min_DCT_scaled_size;

-  }

-

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) /

-      cinfo->min_DCT_scaled_size; /* height of a row group of component */

-    main->buffer[ci] = (*cinfo->mem->alloc_sarray)

-			((j_common_ptr) cinfo, JPOOL_IMAGE,

-			 compptr->width_in_blocks * compptr->DCT_scaled_size,

-			 (JDIMENSION) (rgroup * ngroups));

-  }

-}

+/*
+ * jdmainct.c
+ *
+ * Copyright (C) 1994-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains the main buffer controller for decompression.
+ * The main buffer lies between the JPEG decompressor proper and the
+ * post-processor; it holds downsampled data in the JPEG colorspace.
+ *
+ * Note that this code is bypassed in raw-data mode, since the application
+ * supplies the equivalent of the main buffer in that case.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+
+
+/*
+ * In the current system design, the main buffer need never be a full-image
+ * buffer; any full-height buffers will be found inside the coefficient or
+ * postprocessing controllers.  Nonetheless, the main controller is not
+ * trivial.  Its responsibility is to provide context rows for upsampling/
+ * rescaling, and doing this in an efficient fashion is a bit tricky.
+ *
+ * Postprocessor input data is counted in "row groups".  A row group
+ * is defined to be (v_samp_factor * DCT_scaled_size / min_DCT_scaled_size)
+ * sample rows of each component.  (We require DCT_scaled_size values to be
+ * chosen such that these numbers are integers.  In practice DCT_scaled_size
+ * values will likely be powers of two, so we actually have the stronger
+ * condition that DCT_scaled_size / min_DCT_scaled_size is an integer.)
+ * Upsampling will typically produce max_v_samp_factor pixel rows from each
+ * row group (times any additional scale factor that the upsampler is
+ * applying).
+ *
+ * The coefficient controller will deliver data to us one iMCU row at a time;
+ * each iMCU row contains v_samp_factor * DCT_scaled_size sample rows, or
+ * exactly min_DCT_scaled_size row groups.  (This amount of data corresponds
+ * to one row of MCUs when the image is fully interleaved.)  Note that the
+ * number of sample rows varies across components, but the number of row
+ * groups does not.  Some garbage sample rows may be included in the last iMCU
+ * row at the bottom of the image.
+ *
+ * Depending on the vertical scaling algorithm used, the upsampler may need
+ * access to the sample row(s) above and below its current input row group.
+ * The upsampler is required to set need_context_rows TRUE at global selection
+ * time if so.  When need_context_rows is FALSE, this controller can simply
+ * obtain one iMCU row at a time from the coefficient controller and dole it
+ * out as row groups to the postprocessor.
+ *
+ * When need_context_rows is TRUE, this controller guarantees that the buffer
+ * passed to postprocessing contains at least one row group's worth of samples
+ * above and below the row group(s) being processed.  Note that the context
+ * rows "above" the first passed row group appear at negative row offsets in
+ * the passed buffer.  At the top and bottom of the image, the required
+ * context rows are manufactured by duplicating the first or last real sample
+ * row; this avoids having special cases in the upsampling inner loops.
+ *
+ * The amount of context is fixed at one row group just because that's a
+ * convenient number for this controller to work with.  The existing
+ * upsamplers really only need one sample row of context.  An upsampler
+ * supporting arbitrary output rescaling might wish for more than one row
+ * group of context when shrinking the image; tough, we don't handle that.
+ * (This is justified by the assumption that downsizing will be handled mostly
+ * by adjusting the DCT_scaled_size values, so that the actual scale factor at
+ * the upsample step needn't be much less than one.)
+ *
+ * To provide the desired context, we have to retain the last two row groups
+ * of one iMCU row while reading in the next iMCU row.  (The last row group
+ * can't be processed until we have another row group for its below-context,
+ * and so we have to save the next-to-last group too for its above-context.)
+ * We could do this most simply by copying data around in our buffer, but
+ * that'd be very slow.  We can avoid copying any data by creating a rather
+ * strange pointer structure.  Here's how it works.  We allocate a workspace
+ * consisting of M+2 row groups (where M = min_DCT_scaled_size is the number
+ * of row groups per iMCU row).  We create two sets of redundant pointers to
+ * the workspace.  Labeling the physical row groups 0 to M+1, the synthesized
+ * pointer lists look like this:
+ *                   M+1                          M-1
+ * master pointer --> 0         master pointer --> 0
+ *                    1                            1
+ *                   ...                          ...
+ *                   M-3                          M-3
+ *                   M-2                           M
+ *                   M-1                          M+1
+ *                    M                           M-2
+ *                   M+1                          M-1
+ *                    0                            0
+ * We read alternate iMCU rows using each master pointer; thus the last two
+ * row groups of the previous iMCU row remain un-overwritten in the workspace.
+ * The pointer lists are set up so that the required context rows appear to
+ * be adjacent to the proper places when we pass the pointer lists to the
+ * upsampler.
+ *
+ * The above pictures describe the normal state of the pointer lists.
+ * At top and bottom of the image, we diddle the pointer lists to duplicate
+ * the first or last sample row as necessary (this is cheaper than copying
+ * sample rows around).
+ *
+ * This scheme breaks down if M < 2, ie, min_DCT_scaled_size is 1.  In that
+ * situation each iMCU row provides only one row group so the buffering logic
+ * must be different (eg, we must read two iMCU rows before we can emit the
+ * first row group).  For now, we simply do not support providing context
+ * rows when min_DCT_scaled_size is 1.  That combination seems unlikely to
+ * be worth providing --- if someone wants a 1/8th-size preview, they probably
+ * want it quick and dirty, so a context-free upsampler is sufficient.
+ */
+
+
+/* Private buffer controller object */
+
+typedef struct {
+  struct jpeg_d_main_controller pub; /* public fields */
+
+  /* Pointer to allocated workspace (M or M+2 row groups). */
+  JSAMPARRAY buffer[MAX_COMPONENTS];
+
+  boolean buffer_full;		/* Have we gotten an iMCU row from decoder? */
+  JDIMENSION rowgroup_ctr;	/* counts row groups output to postprocessor */
+
+  /* Remaining fields are only used in the context case. */
+
+  /* These are the master pointers to the funny-order pointer lists. */
+  JSAMPIMAGE xbuffer[2];	/* pointers to weird pointer lists */
+
+  int whichptr;			/* indicates which pointer set is now in use */
+  int context_state;		/* process_data state machine status */
+  JDIMENSION rowgroups_avail;	/* row groups available to postprocessor */
+  JDIMENSION iMCU_row_ctr;	/* counts iMCU rows to detect image top/bot */
+} my_main_controller;
+
+typedef my_main_controller * my_main_ptr;
+
+/* context_state values: */
+#define CTX_PREPARE_FOR_IMCU	0	/* need to prepare for MCU row */
+#define CTX_PROCESS_IMCU	1	/* feeding iMCU to postprocessor */
+#define CTX_POSTPONED_ROW	2	/* feeding postponed row group */
+
+
+/* Forward declarations */
+METHODDEF void process_data_simple_main
+	JPP((j_decompress_ptr cinfo, JSAMPARRAY output_buf,
+	     JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail));
+METHODDEF void process_data_context_main
+	JPP((j_decompress_ptr cinfo, JSAMPARRAY output_buf,
+	     JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail));
+#ifdef QUANT_2PASS_SUPPORTED
+METHODDEF void process_data_crank_post
+	JPP((j_decompress_ptr cinfo, JSAMPARRAY output_buf,
+	     JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail));
+#endif
+
+
+LOCAL void
+alloc_funny_pointers (j_decompress_ptr cinfo)
+/* Allocate space for the funny pointer lists.
+ * This is done only once, not once per pass.
+ */
+{
+  my_main_ptr main = (my_main_ptr) cinfo->main;
+  int ci, rgroup;
+  int M = cinfo->min_DCT_scaled_size;
+  jpeg_component_info *compptr;
+  JSAMPARRAY xbuf;
+
+  /* Get top-level space for component array pointers.
+   * We alloc both arrays with one call to save a few cycles.
+   */
+  main->xbuffer[0] = (JSAMPIMAGE)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				cinfo->num_components * 2 * SIZEOF(JSAMPARRAY));
+  main->xbuffer[1] = main->xbuffer[0] + cinfo->num_components;
+
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) /
+      cinfo->min_DCT_scaled_size; /* height of a row group of component */
+    /* Get space for pointer lists --- M+4 row groups in each list.
+     * We alloc both pointer lists with one call to save a few cycles.
+     */
+    xbuf = (JSAMPARRAY)
+      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				  2 * (rgroup * (M + 4)) * SIZEOF(JSAMPROW));
+    xbuf += rgroup;		/* want one row group at negative offsets */
+    main->xbuffer[0][ci] = xbuf;
+    xbuf += rgroup * (M + 4);
+    main->xbuffer[1][ci] = xbuf;
+  }
+}
+
+
+LOCAL void
+make_funny_pointers (j_decompress_ptr cinfo)
+/* Create the funny pointer lists discussed in the comments above.
+ * The actual workspace is already allocated (in main->buffer),
+ * and the space for the pointer lists is allocated too.
+ * This routine just fills in the curiously ordered lists.
+ * This will be repeated at the beginning of each pass.
+ */
+{
+  my_main_ptr main = (my_main_ptr) cinfo->main;
+  int ci, i, rgroup;
+  int M = cinfo->min_DCT_scaled_size;
+  jpeg_component_info *compptr;
+  JSAMPARRAY buf, xbuf0, xbuf1;
+
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) /
+      cinfo->min_DCT_scaled_size; /* height of a row group of component */
+    xbuf0 = main->xbuffer[0][ci];
+    xbuf1 = main->xbuffer[1][ci];
+    /* First copy the workspace pointers as-is */
+    buf = main->buffer[ci];
+    for (i = 0; i < rgroup * (M + 2); i++) {
+      xbuf0[i] = xbuf1[i] = buf[i];
+    }
+    /* In the second list, put the last four row groups in swapped order */
+    for (i = 0; i < rgroup * 2; i++) {
+      xbuf1[rgroup*(M-2) + i] = buf[rgroup*M + i];
+      xbuf1[rgroup*M + i] = buf[rgroup*(M-2) + i];
+    }
+    /* The wraparound pointers at top and bottom will be filled later
+     * (see set_wraparound_pointers, below).  Initially we want the "above"
+     * pointers to duplicate the first actual data line.  This only needs
+     * to happen in xbuffer[0].
+     */
+    for (i = 0; i < rgroup; i++) {
+      xbuf0[i - rgroup] = xbuf0[0];
+    }
+  }
+}
+
+
+LOCAL void
+set_wraparound_pointers (j_decompress_ptr cinfo)
+/* Set up the "wraparound" pointers at top and bottom of the pointer lists.
+ * This changes the pointer list state from top-of-image to the normal state.
+ */
+{
+  my_main_ptr main = (my_main_ptr) cinfo->main;
+  int ci, i, rgroup;
+  int M = cinfo->min_DCT_scaled_size;
+  jpeg_component_info *compptr;
+  JSAMPARRAY xbuf0, xbuf1;
+
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) /
+      cinfo->min_DCT_scaled_size; /* height of a row group of component */
+    xbuf0 = main->xbuffer[0][ci];
+    xbuf1 = main->xbuffer[1][ci];
+    for (i = 0; i < rgroup; i++) {
+      xbuf0[i - rgroup] = xbuf0[rgroup*(M+1) + i];
+      xbuf1[i - rgroup] = xbuf1[rgroup*(M+1) + i];
+      xbuf0[rgroup*(M+2) + i] = xbuf0[i];
+      xbuf1[rgroup*(M+2) + i] = xbuf1[i];
+    }
+  }
+}
+
+
+LOCAL void
+set_bottom_pointers (j_decompress_ptr cinfo)
+/* Change the pointer lists to duplicate the last sample row at the bottom
+ * of the image.  whichptr indicates which xbuffer holds the final iMCU row.
+ * Also sets rowgroups_avail to indicate number of nondummy row groups in row.
+ */
+{
+  my_main_ptr main = (my_main_ptr) cinfo->main;
+  int ci, i, rgroup, iMCUheight, rows_left;
+  jpeg_component_info *compptr;
+  JSAMPARRAY xbuf;
+
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    /* Count sample rows in one iMCU row and in one row group */
+    iMCUheight = compptr->v_samp_factor * compptr->DCT_scaled_size;
+    rgroup = iMCUheight / cinfo->min_DCT_scaled_size;
+    /* Count nondummy sample rows remaining for this component */
+    rows_left = (int) (compptr->downsampled_height % (JDIMENSION) iMCUheight);
+    if (rows_left == 0) rows_left = iMCUheight;
+    /* Count nondummy row groups.  Should get same answer for each component,
+     * so we need only do it once.
+     */
+    if (ci == 0) {
+      main->rowgroups_avail = (JDIMENSION) ((rows_left-1) / rgroup + 1);
+    }
+    /* Duplicate the last real sample row rgroup*2 times; this pads out the
+     * last partial rowgroup and ensures at least one full rowgroup of context.
+     */
+    xbuf = main->xbuffer[main->whichptr][ci];
+    for (i = 0; i < rgroup * 2; i++) {
+      xbuf[rows_left + i] = xbuf[rows_left-1];
+    }
+  }
+}
+
+
+/*
+ * Initialize for a processing pass.
+ */
+
+METHODDEF void
+start_pass_main (j_decompress_ptr cinfo, J_BUF_MODE pass_mode)
+{
+  my_main_ptr main = (my_main_ptr) cinfo->main;
+
+  switch (pass_mode) {
+  case JBUF_PASS_THRU:
+    if (cinfo->upsample->need_context_rows) {
+      main->pub.process_data = process_data_context_main;
+      make_funny_pointers(cinfo); /* Create the xbuffer[] lists */
+      main->whichptr = 0;	/* Read first iMCU row into xbuffer[0] */
+      main->context_state = CTX_PREPARE_FOR_IMCU;
+      main->iMCU_row_ctr = 0;
+    } else {
+      /* Simple case with no context needed */
+      main->pub.process_data = process_data_simple_main;
+    }
+    main->buffer_full = FALSE;	/* Mark buffer empty */
+    main->rowgroup_ctr = 0;
+    break;
+#ifdef QUANT_2PASS_SUPPORTED
+  case JBUF_CRANK_DEST:
+    /* For last pass of 2-pass quantization, just crank the postprocessor */
+    main->pub.process_data = process_data_crank_post;
+    break;
+#endif
+  default:
+    ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
+    break;
+  }
+}
+
+
+/*
+ * Process some data.
+ * This handles the simple case where no context is required.
+ */
+
+METHODDEF void
+process_data_simple_main (j_decompress_ptr cinfo,
+			  JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
+			  JDIMENSION out_rows_avail)
+{
+  my_main_ptr main = (my_main_ptr) cinfo->main;
+  JDIMENSION rowgroups_avail;
+
+  /* Read input data if we haven't filled the main buffer yet */
+  if (! main->buffer_full) {
+    if (! (*cinfo->coef->decompress_data) (cinfo, main->buffer))
+      return;			/* suspension forced, can do nothing more */
+    main->buffer_full = TRUE;	/* OK, we have an iMCU row to work with */
+  }
+
+  /* There are always min_DCT_scaled_size row groups in an iMCU row. */
+  rowgroups_avail = (JDIMENSION) cinfo->min_DCT_scaled_size;
+  /* Note: at the bottom of the image, we may pass extra garbage row groups
+   * to the postprocessor.  The postprocessor has to check for bottom
+   * of image anyway (at row resolution), so no point in us doing it too.
+   */
+
+  /* Feed the postprocessor */
+  (*cinfo->post->post_process_data) (cinfo, main->buffer,
+				     &main->rowgroup_ctr, rowgroups_avail,
+				     output_buf, out_row_ctr, out_rows_avail);
+
+  /* Has postprocessor consumed all the data yet? If so, mark buffer empty */
+  if (main->rowgroup_ctr >= rowgroups_avail) {
+    main->buffer_full = FALSE;
+    main->rowgroup_ctr = 0;
+  }
+}
+
+
+/*
+ * Process some data.
+ * This handles the case where context rows must be provided.
+ */
+
+METHODDEF void
+process_data_context_main (j_decompress_ptr cinfo,
+			   JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
+			   JDIMENSION out_rows_avail)
+{
+  my_main_ptr main = (my_main_ptr) cinfo->main;
+
+  /* Read input data if we haven't filled the main buffer yet */
+  if (! main->buffer_full) {
+    if (! (*cinfo->coef->decompress_data) (cinfo,
+					   main->xbuffer[main->whichptr]))
+      return;			/* suspension forced, can do nothing more */
+    main->buffer_full = TRUE;	/* OK, we have an iMCU row to work with */
+    main->iMCU_row_ctr++;	/* count rows received */
+  }
+
+  /* Postprocessor typically will not swallow all the input data it is handed
+   * in one call (due to filling the output buffer first).  Must be prepared
+   * to exit and restart.  This switch lets us keep track of how far we got.
+   * Note that each case falls through to the next on successful completion.
+   */
+  switch (main->context_state) {
+  case CTX_POSTPONED_ROW:
+    /* Call postprocessor using previously set pointers for postponed row */
+    (*cinfo->post->post_process_data) (cinfo, main->xbuffer[main->whichptr],
+			&main->rowgroup_ctr, main->rowgroups_avail,
+			output_buf, out_row_ctr, out_rows_avail);
+    if (main->rowgroup_ctr < main->rowgroups_avail)
+      return;			/* Need to suspend */
+    main->context_state = CTX_PREPARE_FOR_IMCU;
+    if (*out_row_ctr >= out_rows_avail)
+      return;			/* Postprocessor exactly filled output buf */
+    /*FALLTHROUGH*/
+  case CTX_PREPARE_FOR_IMCU:
+    /* Prepare to process first M-1 row groups of this iMCU row */
+    main->rowgroup_ctr = 0;
+    main->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_scaled_size - 1);
+    /* Check for bottom of image: if so, tweak pointers to "duplicate"
+     * the last sample row, and adjust rowgroups_avail to ignore padding rows.
+     */
+    if (main->iMCU_row_ctr == cinfo->total_iMCU_rows)
+      set_bottom_pointers(cinfo);
+    main->context_state = CTX_PROCESS_IMCU;
+    /*FALLTHROUGH*/
+  case CTX_PROCESS_IMCU:
+    /* Call postprocessor using previously set pointers */
+    (*cinfo->post->post_process_data) (cinfo, main->xbuffer[main->whichptr],
+			&main->rowgroup_ctr, main->rowgroups_avail,
+			output_buf, out_row_ctr, out_rows_avail);
+    if (main->rowgroup_ctr < main->rowgroups_avail)
+      return;			/* Need to suspend */
+    /* After the first iMCU, change wraparound pointers to normal state */
+    if (main->iMCU_row_ctr == 1)
+      set_wraparound_pointers(cinfo);
+    /* Prepare to load new iMCU row using other xbuffer list */
+    main->whichptr ^= 1;	/* 0=>1 or 1=>0 */
+    main->buffer_full = FALSE;
+    /* Still need to process last row group of this iMCU row, */
+    /* which is saved at index M+1 of the other xbuffer */
+    main->rowgroup_ctr = (JDIMENSION) (cinfo->min_DCT_scaled_size + 1);
+    main->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_scaled_size + 2);
+    main->context_state = CTX_POSTPONED_ROW;
+  }
+}
+
+
+/*
+ * Process some data.
+ * Final pass of two-pass quantization: just call the postprocessor.
+ * Source data will be the postprocessor controller's internal buffer.
+ */
+
+#ifdef QUANT_2PASS_SUPPORTED
+
+METHODDEF void
+process_data_crank_post (j_decompress_ptr cinfo,
+			 JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
+			 JDIMENSION out_rows_avail)
+{
+  (*cinfo->post->post_process_data) (cinfo, (JSAMPIMAGE) NULL,
+				     (JDIMENSION *) NULL, (JDIMENSION) 0,
+				     output_buf, out_row_ctr, out_rows_avail);
+}
+
+#endif /* QUANT_2PASS_SUPPORTED */
+
+
+/*
+ * Initialize main buffer controller.
+ */
+
+GLOBAL void
+jinit_d_main_controller (j_decompress_ptr cinfo, boolean need_full_buffer)
+{
+  my_main_ptr main;
+  int ci, rgroup, ngroups;
+  jpeg_component_info *compptr;
+
+  main = (my_main_ptr)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				SIZEOF(my_main_controller));
+  cinfo->main = (struct jpeg_d_main_controller *) main;
+  main->pub.start_pass = start_pass_main;
+
+  if (need_full_buffer)		/* shouldn't happen */
+    ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
+
+  /* Allocate the workspace.
+   * ngroups is the number of row groups we need.
+   */
+  if (cinfo->upsample->need_context_rows) {
+    if (cinfo->min_DCT_scaled_size < 2) /* unsupported, see comments above */
+      ERREXIT(cinfo, JERR_NOTIMPL);
+    alloc_funny_pointers(cinfo); /* Alloc space for xbuffer[] lists */
+    ngroups = cinfo->min_DCT_scaled_size + 2;
+  } else {
+    ngroups = cinfo->min_DCT_scaled_size;
+  }
+
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) /
+      cinfo->min_DCT_scaled_size; /* height of a row group of component */
+    main->buffer[ci] = (*cinfo->mem->alloc_sarray)
+			((j_common_ptr) cinfo, JPOOL_IMAGE,
+			 compptr->width_in_blocks * compptr->DCT_scaled_size,
+			 (JDIMENSION) (rgroup * ngroups));
+  }
+}
diff --git a/libs/jpeg6/jdmarker.cpp b/libs/jpeg6/jdmarker.cpp
index 6c3c519..80e5f78 100755
--- a/libs/jpeg6/jdmarker.cpp
+++ b/libs/jpeg6/jdmarker.cpp
@@ -1,1052 +1,1052 @@
-/*

- * jdmarker.c

- *

- * Copyright (C) 1991-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains routines to decode JPEG datastream markers.

- * Most of the complexity arises from our desire to support input

- * suspension: if not all of the data for a marker is available,

- * we must exit back to the application.  On resumption, we reprocess

- * the marker.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-

-

-typedef enum {			/* JPEG marker codes */

-  M_SOF0  = 0xc0,

-  M_SOF1  = 0xc1,

-  M_SOF2  = 0xc2,

-  M_SOF3  = 0xc3,

-  

-  M_SOF5  = 0xc5,

-  M_SOF6  = 0xc6,

-  M_SOF7  = 0xc7,

-  

-  M_JPG   = 0xc8,

-  M_SOF9  = 0xc9,

-  M_SOF10 = 0xca,

-  M_SOF11 = 0xcb,

-  

-  M_SOF13 = 0xcd,

-  M_SOF14 = 0xce,

-  M_SOF15 = 0xcf,

-  

-  M_DHT   = 0xc4,

-  

-  M_DAC   = 0xcc,

-  

-  M_RST0  = 0xd0,

-  M_RST1  = 0xd1,

-  M_RST2  = 0xd2,

-  M_RST3  = 0xd3,

-  M_RST4  = 0xd4,

-  M_RST5  = 0xd5,

-  M_RST6  = 0xd6,

-  M_RST7  = 0xd7,

-  

-  M_SOI   = 0xd8,

-  M_EOI   = 0xd9,

-  M_SOS   = 0xda,

-  M_DQT   = 0xdb,

-  M_DNL   = 0xdc,

-  M_DRI   = 0xdd,

-  M_DHP   = 0xde,

-  M_EXP   = 0xdf,

-  

-  M_APP0  = 0xe0,

-  M_APP1  = 0xe1,

-  M_APP2  = 0xe2,

-  M_APP3  = 0xe3,

-  M_APP4  = 0xe4,

-  M_APP5  = 0xe5,

-  M_APP6  = 0xe6,

-  M_APP7  = 0xe7,

-  M_APP8  = 0xe8,

-  M_APP9  = 0xe9,

-  M_APP10 = 0xea,

-  M_APP11 = 0xeb,

-  M_APP12 = 0xec,

-  M_APP13 = 0xed,

-  M_APP14 = 0xee,

-  M_APP15 = 0xef,

-  

-  M_JPG0  = 0xf0,

-  M_JPG13 = 0xfd,

-  M_COM   = 0xfe,

-  

-  M_TEM   = 0x01,

-  

-  M_ERROR = 0x100

-} JPEG_MARKER;

-

-

-/*

- * Macros for fetching data from the data source module.

- *

- * At all times, cinfo->src->next_input_byte and ->bytes_in_buffer reflect

- * the current restart point; we update them only when we have reached a

- * suitable place to restart if a suspension occurs.

- */

-

-/* Declare and initialize local copies of input pointer/count */

-#define INPUT_VARS(cinfo)  \

-	struct jpeg_source_mgr * datasrc = (cinfo)->src;  \

-	const JOCTET * next_input_byte = datasrc->next_input_byte;  \

-	size_t bytes_in_buffer = datasrc->bytes_in_buffer

-

-/* Unload the local copies --- do this only at a restart boundary */

-#define INPUT_SYNC(cinfo)  \

-	( datasrc->next_input_byte = next_input_byte,  \

-	  datasrc->bytes_in_buffer = bytes_in_buffer )

-

-/* Reload the local copies --- seldom used except in MAKE_BYTE_AVAIL */

-#define INPUT_RELOAD(cinfo)  \

-	( next_input_byte = datasrc->next_input_byte,  \

-	  bytes_in_buffer = datasrc->bytes_in_buffer )

-

-/* Internal macro for INPUT_BYTE and INPUT_2BYTES: make a byte available.

- * Note we do *not* do INPUT_SYNC before calling fill_input_buffer,

- * but we must reload the local copies after a successful fill.

- */

-#define MAKE_BYTE_AVAIL(cinfo,action)  \

-	if (bytes_in_buffer == 0) {  \

-	  if (! (*datasrc->fill_input_buffer) (cinfo))  \

-	    { action; }  \

-	  INPUT_RELOAD(cinfo);  \

-	}  \

-	bytes_in_buffer--

-

-/* Read a byte into variable V.

- * If must suspend, take the specified action (typically "return FALSE").

- */

-#define INPUT_BYTE(cinfo,V,action)  \

-	MAKESTMT( MAKE_BYTE_AVAIL(cinfo,action); \

-		  V = GETJOCTET(*next_input_byte++); )

-

-/* As above, but read two bytes interpreted as an unsigned 16-bit integer.

- * V should be declared unsigned int or perhaps INT32.

- */

-#define INPUT_2BYTES(cinfo,V,action)  \

-	MAKESTMT( MAKE_BYTE_AVAIL(cinfo,action); \

-		  V = ((unsigned int) GETJOCTET(*next_input_byte++)) << 8; \

-		  MAKE_BYTE_AVAIL(cinfo,action); \

-		  V += GETJOCTET(*next_input_byte++); )

-

-

-/*

- * Routines to process JPEG markers.

- *

- * Entry condition: JPEG marker itself has been read and its code saved

- *   in cinfo->unread_marker; input restart point is just after the marker.

- *

- * Exit: if return TRUE, have read and processed any parameters, and have

- *   updated the restart point to point after the parameters.

- *   If return FALSE, was forced to suspend before reaching end of

- *   marker parameters; restart point has not been moved.  Same routine

- *   will be called again after application supplies more input data.

- *

- * This approach to suspension assumes that all of a marker's parameters can

- * fit into a single input bufferload.  This should hold for "normal"

- * markers.  Some COM/APPn markers might have large parameter segments,

- * but we use skip_input_data to get past those, and thereby put the problem

- * on the source manager's shoulders.

- *

- * Note that we don't bother to avoid duplicate trace messages if a

- * suspension occurs within marker parameters.  Other side effects

- * require more care.

- */

-

-

-LOCAL boolean

-get_soi (j_decompress_ptr cinfo)

-/* Process an SOI marker */

-{

-  int i;

-  

-  TRACEMS(cinfo, 1, JTRC_SOI);

-

-  if (cinfo->marker->saw_SOI)

-    ERREXIT(cinfo, JERR_SOI_DUPLICATE);

-

-  /* Reset all parameters that are defined to be reset by SOI */

-

-  for (i = 0; i < NUM_ARITH_TBLS; i++) {

-    cinfo->arith_dc_L[i] = 0;

-    cinfo->arith_dc_U[i] = 1;

-    cinfo->arith_ac_K[i] = 5;

-  }

-  cinfo->restart_interval = 0;

-

-  /* Set initial assumptions for colorspace etc */

-

-  cinfo->jpeg_color_space = JCS_UNKNOWN;

-  cinfo->CCIR601_sampling = FALSE; /* Assume non-CCIR sampling??? */

-

-  cinfo->saw_JFIF_marker = FALSE;

-  cinfo->density_unit = 0;	/* set default JFIF APP0 values */

-  cinfo->X_density = 1;

-  cinfo->Y_density = 1;

-  cinfo->saw_Adobe_marker = FALSE;

-  cinfo->Adobe_transform = 0;

-

-  cinfo->marker->saw_SOI = TRUE;

-

-  return TRUE;

-}

-

-

-LOCAL boolean

-get_sof (j_decompress_ptr cinfo, boolean is_prog, boolean is_arith)

-/* Process a SOFn marker */

-{

-  INT32 length;

-  int c, ci;

-  jpeg_component_info * compptr;

-  INPUT_VARS(cinfo);

-

-  cinfo->progressive_mode = is_prog;

-  cinfo->arith_code = is_arith;

-

-  INPUT_2BYTES(cinfo, length, return FALSE);

-

-  INPUT_BYTE(cinfo, cinfo->data_precision, return FALSE);

-  INPUT_2BYTES(cinfo, cinfo->image_height, return FALSE);

-  INPUT_2BYTES(cinfo, cinfo->image_width, return FALSE);

-  INPUT_BYTE(cinfo, cinfo->num_components, return FALSE);

-

-  length -= 8;

-

-  TRACEMS4(cinfo, 1, JTRC_SOF, cinfo->unread_marker,

-	   (int) cinfo->image_width, (int) cinfo->image_height,

-	   cinfo->num_components);

-

-  if (cinfo->marker->saw_SOF)

-    ERREXIT(cinfo, JERR_SOF_DUPLICATE);

-

-  /* We don't support files in which the image height is initially specified */

-  /* as 0 and is later redefined by DNL.  As long as we have to check that,  */

-  /* might as well have a general sanity check. */

-  if (cinfo->image_height <= 0 || cinfo->image_width <= 0

-      || cinfo->num_components <= 0)

-    ERREXIT(cinfo, JERR_EMPTY_IMAGE);

-

-  if (length != (cinfo->num_components * 3))

-    ERREXIT(cinfo, JERR_BAD_LENGTH);

-

-  if (cinfo->comp_info == NULL)	/* do only once, even if suspend */

-    cinfo->comp_info = (jpeg_component_info *) (*cinfo->mem->alloc_small)

-			((j_common_ptr) cinfo, JPOOL_IMAGE,

-			 cinfo->num_components * SIZEOF(jpeg_component_info));

-  

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    compptr->component_index = ci;

-    INPUT_BYTE(cinfo, compptr->component_id, return FALSE);

-    INPUT_BYTE(cinfo, c, return FALSE);

-    compptr->h_samp_factor = (c >> 4) & 15;

-    compptr->v_samp_factor = (c     ) & 15;

-    INPUT_BYTE(cinfo, compptr->quant_tbl_no, return FALSE);

-

-    TRACEMS4(cinfo, 1, JTRC_SOF_COMPONENT,

-	     compptr->component_id, compptr->h_samp_factor,

-	     compptr->v_samp_factor, compptr->quant_tbl_no);

-  }

-

-  cinfo->marker->saw_SOF = TRUE;

-

-  INPUT_SYNC(cinfo);

-  return TRUE;

-}

-

-

-LOCAL boolean

-get_sos (j_decompress_ptr cinfo)

-/* Process a SOS marker */

-{

-  INT32 length;

-  int i, ci, n, c, cc;

-  jpeg_component_info * compptr;

-  INPUT_VARS(cinfo);

-

-  if (! cinfo->marker->saw_SOF)

-    ERREXIT(cinfo, JERR_SOS_NO_SOF);

-

-  INPUT_2BYTES(cinfo, length, return FALSE);

-

-  INPUT_BYTE(cinfo, n, return FALSE); /* Number of components */

-

-  if (length != (n * 2 + 6) || n < 1 || n > MAX_COMPS_IN_SCAN)

-    ERREXIT(cinfo, JERR_BAD_LENGTH);

-

-  TRACEMS1(cinfo, 1, JTRC_SOS, n);

-

-  cinfo->comps_in_scan = n;

-

-  /* Collect the component-spec parameters */

-

-  for (i = 0; i < n; i++) {

-    INPUT_BYTE(cinfo, cc, return FALSE);

-    INPUT_BYTE(cinfo, c, return FALSE);

-    

-    for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-	 ci++, compptr++) {

-      if (cc == compptr->component_id)

-	goto id_found;

-    }

-

-    ERREXIT1(cinfo, JERR_BAD_COMPONENT_ID, cc);

-

-  id_found:

-

-    cinfo->cur_comp_info[i] = compptr;

-    compptr->dc_tbl_no = (c >> 4) & 15;

-    compptr->ac_tbl_no = (c     ) & 15;

-    

-    TRACEMS3(cinfo, 1, JTRC_SOS_COMPONENT, cc,

-	     compptr->dc_tbl_no, compptr->ac_tbl_no);

-  }

-

-  /* Collect the additional scan parameters Ss, Se, Ah/Al. */

-  INPUT_BYTE(cinfo, c, return FALSE);

-  cinfo->Ss = c;

-  INPUT_BYTE(cinfo, c, return FALSE);

-  cinfo->Se = c;

-  INPUT_BYTE(cinfo, c, return FALSE);

-  cinfo->Ah = (c >> 4) & 15;

-  cinfo->Al = (c     ) & 15;

-

-  TRACEMS4(cinfo, 1, JTRC_SOS_PARAMS, cinfo->Ss, cinfo->Se,

-	   cinfo->Ah, cinfo->Al);

-

-  /* Prepare to scan data & restart markers */

-  cinfo->marker->next_restart_num = 0;

-

-  /* Count another SOS marker */

-  cinfo->input_scan_number++;

-

-  INPUT_SYNC(cinfo);

-  return TRUE;

-}

-

-

-METHODDEF boolean

-get_app0 (j_decompress_ptr cinfo)

-/* Process an APP0 marker */

-{

-#define JFIF_LEN 14

-  INT32 length;

-  UINT8 b[JFIF_LEN];

-  int buffp;

-  INPUT_VARS(cinfo);

-

-  INPUT_2BYTES(cinfo, length, return FALSE);

-  length -= 2;

-

-  /* See if a JFIF APP0 marker is present */

-

-  if (length >= JFIF_LEN) {

-    for (buffp = 0; buffp < JFIF_LEN; buffp++)

-      INPUT_BYTE(cinfo, b[buffp], return FALSE);

-    length -= JFIF_LEN;

-

-    if (b[0]==0x4A && b[1]==0x46 && b[2]==0x49 && b[3]==0x46 && b[4]==0) {

-      /* Found JFIF APP0 marker: check version */

-      /* Major version must be 1, anything else signals an incompatible change.

-       * We used to treat this as an error, but now it's a nonfatal warning,

-       * because some bozo at Hijaak couldn't read the spec.

-       * Minor version should be 0..2, but process anyway if newer.

-       */

-      if (b[5] != 1)

-	WARNMS2(cinfo, JWRN_JFIF_MAJOR, b[5], b[6]);

-      else if (b[6] > 2)

-	TRACEMS2(cinfo, 1, JTRC_JFIF_MINOR, b[5], b[6]);

-      /* Save info */

-      cinfo->saw_JFIF_marker = TRUE;

-      cinfo->density_unit = b[7];

-      cinfo->X_density = (b[8] << 8) + b[9];

-      cinfo->Y_density = (b[10] << 8) + b[11];

-      TRACEMS3(cinfo, 1, JTRC_JFIF,

-	       cinfo->X_density, cinfo->Y_density, cinfo->density_unit);

-      if (b[12] | b[13])

-	TRACEMS2(cinfo, 1, JTRC_JFIF_THUMBNAIL, b[12], b[13]);

-      if (length != ((INT32) b[12] * (INT32) b[13] * (INT32) 3))

-	TRACEMS1(cinfo, 1, JTRC_JFIF_BADTHUMBNAILSIZE, (int) length);

-    } else {

-      /* Start of APP0 does not match "JFIF" */

-      TRACEMS1(cinfo, 1, JTRC_APP0, (int) length + JFIF_LEN);

-    }

-  } else {

-    /* Too short to be JFIF marker */

-    TRACEMS1(cinfo, 1, JTRC_APP0, (int) length);

-  }

-

-  INPUT_SYNC(cinfo);

-  if (length > 0)		/* skip any remaining data -- could be lots */

-    (*cinfo->src->skip_input_data) (cinfo, (long) length);

-

-  return TRUE;

-}

-

-

-METHODDEF boolean

-get_app14 (j_decompress_ptr cinfo)

-/* Process an APP14 marker */

-{

-#define ADOBE_LEN 12

-  INT32 length;

-  UINT8 b[ADOBE_LEN];

-  int buffp;

-  unsigned int version, flags0, flags1, transform;

-  INPUT_VARS(cinfo);

-

-  INPUT_2BYTES(cinfo, length, return FALSE);

-  length -= 2;

-

-  /* See if an Adobe APP14 marker is present */

-

-  if (length >= ADOBE_LEN) {

-    for (buffp = 0; buffp < ADOBE_LEN; buffp++)

-      INPUT_BYTE(cinfo, b[buffp], return FALSE);

-    length -= ADOBE_LEN;

-

-    if (b[0]==0x41 && b[1]==0x64 && b[2]==0x6F && b[3]==0x62 && b[4]==0x65) {

-      /* Found Adobe APP14 marker */

-      version = (b[5] << 8) + b[6];

-      flags0 = (b[7] << 8) + b[8];

-      flags1 = (b[9] << 8) + b[10];

-      transform = b[11];

-      TRACEMS4(cinfo, 1, JTRC_ADOBE, version, flags0, flags1, transform);

-      cinfo->saw_Adobe_marker = TRUE;

-      cinfo->Adobe_transform = (UINT8) transform;

-    } else {

-      /* Start of APP14 does not match "Adobe" */

-      TRACEMS1(cinfo, 1, JTRC_APP14, (int) length + ADOBE_LEN);

-    }

-  } else {

-    /* Too short to be Adobe marker */

-    TRACEMS1(cinfo, 1, JTRC_APP14, (int) length);

-  }

-

-  INPUT_SYNC(cinfo);

-  if (length > 0)		/* skip any remaining data -- could be lots */

-    (*cinfo->src->skip_input_data) (cinfo, (long) length);

-

-  return TRUE;

-}

-

-

-LOCAL boolean

-get_dac (j_decompress_ptr cinfo)

-/* Process a DAC marker */

-{

-  INT32 length;

-  int index, val;

-  INPUT_VARS(cinfo);

-

-  INPUT_2BYTES(cinfo, length, return FALSE);

-  length -= 2;

-  

-  while (length > 0) {

-    INPUT_BYTE(cinfo, index, return FALSE);

-    INPUT_BYTE(cinfo, val, return FALSE);

-

-    length -= 2;

-

-    TRACEMS2(cinfo, 1, JTRC_DAC, index, val);

-

-    if (index < 0 || index >= (2*NUM_ARITH_TBLS))

-      ERREXIT1(cinfo, JERR_DAC_INDEX, index);

-

-    if (index >= NUM_ARITH_TBLS) { /* define AC table */

-      cinfo->arith_ac_K[index-NUM_ARITH_TBLS] = (UINT8) val;

-    } else {			/* define DC table */

-      cinfo->arith_dc_L[index] = (UINT8) (val & 0x0F);

-      cinfo->arith_dc_U[index] = (UINT8) (val >> 4);

-      if (cinfo->arith_dc_L[index] > cinfo->arith_dc_U[index])

-	ERREXIT1(cinfo, JERR_DAC_VALUE, val);

-    }

-  }

-

-  INPUT_SYNC(cinfo);

-  return TRUE;

-}

-

-

-LOCAL boolean

-get_dht (j_decompress_ptr cinfo)

-/* Process a DHT marker */

-{

-  INT32 length;

-  UINT8 bits[17];

-  UINT8 huffval[256];

-  int i, index, count;

-  JHUFF_TBL **htblptr;

-  INPUT_VARS(cinfo);

-

-  INPUT_2BYTES(cinfo, length, return FALSE);

-  length -= 2;

-  

-  while (length > 0) {

-    INPUT_BYTE(cinfo, index, return FALSE);

-

-    TRACEMS1(cinfo, 1, JTRC_DHT, index);

-      

-    bits[0] = 0;

-    count = 0;

-    for (i = 1; i <= 16; i++) {

-      INPUT_BYTE(cinfo, bits[i], return FALSE);

-      count += bits[i];

-    }

-

-    length -= 1 + 16;

-

-    TRACEMS8(cinfo, 2, JTRC_HUFFBITS,

-	     bits[1], bits[2], bits[3], bits[4],

-	     bits[5], bits[6], bits[7], bits[8]);

-    TRACEMS8(cinfo, 2, JTRC_HUFFBITS,

-	     bits[9], bits[10], bits[11], bits[12],

-	     bits[13], bits[14], bits[15], bits[16]);

-

-    if (count > 256 || ((INT32) count) > length)

-      ERREXIT(cinfo, JERR_DHT_COUNTS);

-

-    for (i = 0; i < count; i++)

-      INPUT_BYTE(cinfo, huffval[i], return FALSE);

-

-    length -= count;

-

-    if (index & 0x10) {		/* AC table definition */

-      index -= 0x10;

-      htblptr = &cinfo->ac_huff_tbl_ptrs[index];

-    } else {			/* DC table definition */

-      htblptr = &cinfo->dc_huff_tbl_ptrs[index];

-    }

-

-    if (index < 0 || index >= NUM_HUFF_TBLS)

-      ERREXIT1(cinfo, JERR_DHT_INDEX, index);

-

-    if (*htblptr == NULL)

-      *htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo);

-  

-    MEMCOPY((*htblptr)->bits, bits, SIZEOF((*htblptr)->bits));

-    MEMCOPY((*htblptr)->huffval, huffval, SIZEOF((*htblptr)->huffval));

-  }

-

-  INPUT_SYNC(cinfo);

-  return TRUE;

-}

-

-

-LOCAL boolean

-get_dqt (j_decompress_ptr cinfo)

-/* Process a DQT marker */

-{

-  INT32 length;

-  int n, i, prec;

-  unsigned int tmp;

-  JQUANT_TBL *quant_ptr;

-  INPUT_VARS(cinfo);

-

-  INPUT_2BYTES(cinfo, length, return FALSE);

-  length -= 2;

-

-  while (length > 0) {

-    INPUT_BYTE(cinfo, n, return FALSE);

-    prec = n >> 4;

-    n &= 0x0F;

-

-    TRACEMS2(cinfo, 1, JTRC_DQT, n, prec);

-

-    if (n >= NUM_QUANT_TBLS)

-      ERREXIT1(cinfo, JERR_DQT_INDEX, n);

-      

-    if (cinfo->quant_tbl_ptrs[n] == NULL)

-      cinfo->quant_tbl_ptrs[n] = jpeg_alloc_quant_table((j_common_ptr) cinfo);

-    quant_ptr = cinfo->quant_tbl_ptrs[n];

-

-    for (i = 0; i < DCTSIZE2; i++) {

-      if (prec)

-	INPUT_2BYTES(cinfo, tmp, return FALSE);

-      else

-	INPUT_BYTE(cinfo, tmp, return FALSE);

-      quant_ptr->quantval[i] = (UINT16) tmp;

-    }

-

-    for (i = 0; i < DCTSIZE2; i += 8) {

-      TRACEMS8(cinfo, 2, JTRC_QUANTVALS,

-	       quant_ptr->quantval[i  ], quant_ptr->quantval[i+1],

-	       quant_ptr->quantval[i+2], quant_ptr->quantval[i+3],

-	       quant_ptr->quantval[i+4], quant_ptr->quantval[i+5],

-	       quant_ptr->quantval[i+6], quant_ptr->quantval[i+7]);

-    }

-

-    length -= DCTSIZE2+1;

-    if (prec) length -= DCTSIZE2;

-  }

-

-  INPUT_SYNC(cinfo);

-  return TRUE;

-}

-

-

-LOCAL boolean

-get_dri (j_decompress_ptr cinfo)

-/* Process a DRI marker */

-{

-  INT32 length;

-  unsigned int tmp;

-  INPUT_VARS(cinfo);

-

-  INPUT_2BYTES(cinfo, length, return FALSE);

-  

-  if (length != 4)

-    ERREXIT(cinfo, JERR_BAD_LENGTH);

-

-  INPUT_2BYTES(cinfo, tmp, return FALSE);

-

-  TRACEMS1(cinfo, 1, JTRC_DRI, tmp);

-

-  cinfo->restart_interval = tmp;

-

-  INPUT_SYNC(cinfo);

-  return TRUE;

-}

-

-

-METHODDEF boolean

-skip_variable (j_decompress_ptr cinfo)

-/* Skip over an unknown or uninteresting variable-length marker */

-{

-  INT32 length;

-  INPUT_VARS(cinfo);

-

-  INPUT_2BYTES(cinfo, length, return FALSE);

-  

-  TRACEMS2(cinfo, 1, JTRC_MISC_MARKER, cinfo->unread_marker, (int) length);

-

-  INPUT_SYNC(cinfo);		/* do before skip_input_data */

-  (*cinfo->src->skip_input_data) (cinfo, (long) length - 2L);

-

-  return TRUE;

-}

-

-

-/*

- * Find the next JPEG marker, save it in cinfo->unread_marker.

- * Returns FALSE if had to suspend before reaching a marker;

- * in that case cinfo->unread_marker is unchanged.

- *

- * Note that the result might not be a valid marker code,

- * but it will never be 0 or FF.

- */

-

-LOCAL boolean

-next_marker (j_decompress_ptr cinfo)

-{

-  int c;

-  INPUT_VARS(cinfo);

-

-  for (;;) {

-    INPUT_BYTE(cinfo, c, return FALSE);

-    /* Skip any non-FF bytes.

-     * This may look a bit inefficient, but it will not occur in a valid file.

-     * We sync after each discarded byte so that a suspending data source

-     * can discard the byte from its buffer.

-     */

-    while (c != 0xFF) {

-      cinfo->marker->discarded_bytes++;

-      INPUT_SYNC(cinfo);

-      INPUT_BYTE(cinfo, c, return FALSE);

-    }

-    /* This loop swallows any duplicate FF bytes.  Extra FFs are legal as

-     * pad bytes, so don't count them in discarded_bytes.  We assume there

-     * will not be so many consecutive FF bytes as to overflow a suspending

-     * data source's input buffer.

-     */

-    do {

-      INPUT_BYTE(cinfo, c, return FALSE);

-    } while (c == 0xFF);

-    if (c != 0)

-      break;			/* found a valid marker, exit loop */

-    /* Reach here if we found a stuffed-zero data sequence (FF/00).

-     * Discard it and loop back to try again.

-     */

-    cinfo->marker->discarded_bytes += 2;

-    INPUT_SYNC(cinfo);

-  }

-

-  if (cinfo->marker->discarded_bytes != 0) {

-    WARNMS2(cinfo, JWRN_EXTRANEOUS_DATA, cinfo->marker->discarded_bytes, c);

-    cinfo->marker->discarded_bytes = 0;

-  }

-

-  cinfo->unread_marker = c;

-

-  INPUT_SYNC(cinfo);

-  return TRUE;

-}

-

-

-LOCAL boolean

-first_marker (j_decompress_ptr cinfo)

-/* Like next_marker, but used to obtain the initial SOI marker. */

-/* For this marker, we do not allow preceding garbage or fill; otherwise,

- * we might well scan an entire input file before realizing it ain't JPEG.

- * If an application wants to process non-JFIF files, it must seek to the

- * SOI before calling the JPEG library.

- */

-{

-  int c, c2;

-  INPUT_VARS(cinfo);

-

-  INPUT_BYTE(cinfo, c, return FALSE);

-  INPUT_BYTE(cinfo, c2, return FALSE);

-  if (c != 0xFF || c2 != (int) M_SOI)

-    ERREXIT2(cinfo, JERR_NO_SOI, c, c2);

-

-  cinfo->unread_marker = c2;

-

-  INPUT_SYNC(cinfo);

-  return TRUE;

-}

-

-

-/*

- * Read markers until SOS or EOI.

- *

- * Returns same codes as are defined for jpeg_consume_input:

- * JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI.

- */

-

-METHODDEF int

-read_markers (j_decompress_ptr cinfo)

-{

-  /* Outer loop repeats once for each marker. */

-  for (;;) {

-    /* Collect the marker proper, unless we already did. */

-    /* NB: first_marker() enforces the requirement that SOI appear first. */

-    if (cinfo->unread_marker == 0) {

-      if (! cinfo->marker->saw_SOI) {

-	if (! first_marker(cinfo))

-	  return JPEG_SUSPENDED;

-      } else {

-	if (! next_marker(cinfo))

-	  return JPEG_SUSPENDED;

-      }

-    }

-    /* At this point cinfo->unread_marker contains the marker code and the

-     * input point is just past the marker proper, but before any parameters.

-     * A suspension will cause us to return with this state still true.

-     */

-    switch (cinfo->unread_marker) {

-    case M_SOI:

-      if (! get_soi(cinfo))

-	return JPEG_SUSPENDED;

-      break;

-

-    case M_SOF0:		/* Baseline */

-    case M_SOF1:		/* Extended sequential, Huffman */

-      if (! get_sof(cinfo, FALSE, FALSE))

-	return JPEG_SUSPENDED;

-      break;

-

-    case M_SOF2:		/* Progressive, Huffman */

-      if (! get_sof(cinfo, TRUE, FALSE))

-	return JPEG_SUSPENDED;

-      break;

-

-    case M_SOF9:		/* Extended sequential, arithmetic */

-      if (! get_sof(cinfo, FALSE, TRUE))

-	return JPEG_SUSPENDED;

-      break;

-

-    case M_SOF10:		/* Progressive, arithmetic */

-      if (! get_sof(cinfo, TRUE, TRUE))

-	return JPEG_SUSPENDED;

-      break;

-

-    /* Currently unsupported SOFn types */

-    case M_SOF3:		/* Lossless, Huffman */

-    case M_SOF5:		/* Differential sequential, Huffman */

-    case M_SOF6:		/* Differential progressive, Huffman */

-    case M_SOF7:		/* Differential lossless, Huffman */

-    case M_JPG:			/* Reserved for JPEG extensions */

-    case M_SOF11:		/* Lossless, arithmetic */

-    case M_SOF13:		/* Differential sequential, arithmetic */

-    case M_SOF14:		/* Differential progressive, arithmetic */

-    case M_SOF15:		/* Differential lossless, arithmetic */

-      ERREXIT1(cinfo, JERR_SOF_UNSUPPORTED, cinfo->unread_marker);

-      break;

-

-    case M_SOS:

-      if (! get_sos(cinfo))

-	return JPEG_SUSPENDED;

-      cinfo->unread_marker = 0;	/* processed the marker */

-      return JPEG_REACHED_SOS;

-    

-    case M_EOI:

-      TRACEMS(cinfo, 1, JTRC_EOI);

-      cinfo->unread_marker = 0;	/* processed the marker */

-      return JPEG_REACHED_EOI;

-      

-    case M_DAC:

-      if (! get_dac(cinfo))

-	return JPEG_SUSPENDED;

-      break;

-      

-    case M_DHT:

-      if (! get_dht(cinfo))

-	return JPEG_SUSPENDED;

-      break;

-      

-    case M_DQT:

-      if (! get_dqt(cinfo))

-	return JPEG_SUSPENDED;

-      break;

-      

-    case M_DRI:

-      if (! get_dri(cinfo))

-	return JPEG_SUSPENDED;

-      break;

-      

-    case M_APP0:

-    case M_APP1:

-    case M_APP2:

-    case M_APP3:

-    case M_APP4:

-    case M_APP5:

-    case M_APP6:

-    case M_APP7:

-    case M_APP8:

-    case M_APP9:

-    case M_APP10:

-    case M_APP11:

-    case M_APP12:

-    case M_APP13:

-    case M_APP14:

-    case M_APP15:

-      if (! (*cinfo->marker->process_APPn[cinfo->unread_marker - (int) M_APP0]) (cinfo))

-	return JPEG_SUSPENDED;

-      break;

-      

-    case M_COM:

-      if (! (*cinfo->marker->process_COM) (cinfo))

-	return JPEG_SUSPENDED;

-      break;

-

-    case M_RST0:		/* these are all parameterless */

-    case M_RST1:

-    case M_RST2:

-    case M_RST3:

-    case M_RST4:

-    case M_RST5:

-    case M_RST6:

-    case M_RST7:

-    case M_TEM:

-      TRACEMS1(cinfo, 1, JTRC_PARMLESS_MARKER, cinfo->unread_marker);

-      break;

-

-    case M_DNL:			/* Ignore DNL ... perhaps the wrong thing */

-      if (! skip_variable(cinfo))

-	return JPEG_SUSPENDED;

-      break;

-

-    default:			/* must be DHP, EXP, JPGn, or RESn */

-      /* For now, we treat the reserved markers as fatal errors since they are

-       * likely to be used to signal incompatible JPEG Part 3 extensions.

-       * Once the JPEG 3 version-number marker is well defined, this code

-       * ought to change!

-       */

-      ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, cinfo->unread_marker);

-      break;

-    }

-    /* Successfully processed marker, so reset state variable */

-    cinfo->unread_marker = 0;

-  } /* end loop */

-}

-

-

-/*

- * Read a restart marker, which is expected to appear next in the datastream;

- * if the marker is not there, take appropriate recovery action.

- * Returns FALSE if suspension is required.

- *

- * This is called by the entropy decoder after it has read an appropriate

- * number of MCUs.  cinfo->unread_marker may be nonzero if the entropy decoder

- * has already read a marker from the data source.  Under normal conditions

- * cinfo->unread_marker will be reset to 0 before returning; if not reset,

- * it holds a marker which the decoder will be unable to read past.

- */

-

-METHODDEF boolean

-read_restart_marker (j_decompress_ptr cinfo)

-{

-  /* Obtain a marker unless we already did. */

-  /* Note that next_marker will complain if it skips any data. */

-  if (cinfo->unread_marker == 0) {

-    if (! next_marker(cinfo))

-      return FALSE;

-  }

-

-  if (cinfo->unread_marker ==

-      ((int) M_RST0 + cinfo->marker->next_restart_num)) {

-    /* Normal case --- swallow the marker and let entropy decoder continue */

-    TRACEMS1(cinfo, 2, JTRC_RST, cinfo->marker->next_restart_num);

-    cinfo->unread_marker = 0;

-  } else {

-    /* Uh-oh, the restart markers have been messed up. */

-    /* Let the data source manager determine how to resync. */

-    if (! (*cinfo->src->resync_to_restart) (cinfo,

-					    cinfo->marker->next_restart_num))

-      return FALSE;

-  }

-

-  /* Update next-restart state */

-  cinfo->marker->next_restart_num = (cinfo->marker->next_restart_num + 1) & 7;

-

-  return TRUE;

-}

-

-

-/*

- * This is the default resync_to_restart method for data source managers

- * to use if they don't have any better approach.  Some data source managers

- * may be able to back up, or may have additional knowledge about the data

- * which permits a more intelligent recovery strategy; such managers would

- * presumably supply their own resync method.

- *

- * read_restart_marker calls resync_to_restart if it finds a marker other than

- * the restart marker it was expecting.  (This code is *not* used unless

- * a nonzero restart interval has been declared.)  cinfo->unread_marker is

- * the marker code actually found (might be anything, except 0 or FF).

- * The desired restart marker number (0..7) is passed as a parameter.

- * This routine is supposed to apply whatever error recovery strategy seems

- * appropriate in order to position the input stream to the next data segment.

- * Note that cinfo->unread_marker is treated as a marker appearing before

- * the current data-source input point; usually it should be reset to zero

- * before returning.

- * Returns FALSE if suspension is required.

- *

- * This implementation is substantially constrained by wanting to treat the

- * input as a data stream; this means we can't back up.  Therefore, we have

- * only the following actions to work with:

- *   1. Simply discard the marker and let the entropy decoder resume at next

- *      byte of file.

- *   2. Read forward until we find another marker, discarding intervening

- *      data.  (In theory we could look ahead within the current bufferload,

- *      without having to discard data if we don't find the desired marker.

- *      This idea is not implemented here, in part because it makes behavior

- *      dependent on buffer size and chance buffer-boundary positions.)

- *   3. Leave the marker unread (by failing to zero cinfo->unread_marker).

- *      This will cause the entropy decoder to process an empty data segment,

- *      inserting dummy zeroes, and then we will reprocess the marker.

- *

- * #2 is appropriate if we think the desired marker lies ahead, while #3 is

- * appropriate if the found marker is a future restart marker (indicating

- * that we have missed the desired restart marker, probably because it got

- * corrupted).

- * We apply #2 or #3 if the found marker is a restart marker no more than

- * two counts behind or ahead of the expected one.  We also apply #2 if the

- * found marker is not a legal JPEG marker code (it's certainly bogus data).

- * If the found marker is a restart marker more than 2 counts away, we do #1

- * (too much risk that the marker is erroneous; with luck we will be able to

- * resync at some future point).

- * For any valid non-restart JPEG marker, we apply #3.  This keeps us from

- * overrunning the end of a scan.  An implementation limited to single-scan

- * files might find it better to apply #2 for markers other than EOI, since

- * any other marker would have to be bogus data in that case.

- */

-

-GLOBAL boolean

-jpeg_resync_to_restart (j_decompress_ptr cinfo, int desired)

-{

-  int marker = cinfo->unread_marker;

-  int action = 1;

-  

-  /* Always put up a warning. */

-  WARNMS2(cinfo, JWRN_MUST_RESYNC, marker, desired);

-  

-  /* Outer loop handles repeated decision after scanning forward. */

-  for (;;) {

-    if (marker < (int) M_SOF0)

-      action = 2;		/* invalid marker */

-    else if (marker < (int) M_RST0 || marker > (int) M_RST7)

-      action = 3;		/* valid non-restart marker */

-    else {

-      if (marker == ((int) M_RST0 + ((desired+1) & 7)) ||

-	  marker == ((int) M_RST0 + ((desired+2) & 7)))

-	action = 3;		/* one of the next two expected restarts */

-      else if (marker == ((int) M_RST0 + ((desired-1) & 7)) ||

-	       marker == ((int) M_RST0 + ((desired-2) & 7)))

-	action = 2;		/* a prior restart, so advance */

-      else

-	action = 1;		/* desired restart or too far away */

-    }

-    TRACEMS2(cinfo, 4, JTRC_RECOVERY_ACTION, marker, action);

-    switch (action) {

-    case 1:

-      /* Discard marker and let entropy decoder resume processing. */

-      cinfo->unread_marker = 0;

-      return TRUE;

-    case 2:

-      /* Scan to the next marker, and repeat the decision loop. */

-      if (! next_marker(cinfo))

-	return FALSE;

-      marker = cinfo->unread_marker;

-      break;

-    case 3:

-      /* Return without advancing past this marker. */

-      /* Entropy decoder will be forced to process an empty segment. */

-      return TRUE;

-    }

-  } /* end loop */

-}

-

-

-/*

- * Reset marker processing state to begin a fresh datastream.

- */

-

-METHODDEF void

-reset_marker_reader (j_decompress_ptr cinfo)

-{

-  cinfo->comp_info = NULL;		/* until allocated by get_sof */

-  cinfo->input_scan_number = 0;		/* no SOS seen yet */

-  cinfo->unread_marker = 0;		/* no pending marker */

-  cinfo->marker->saw_SOI = FALSE;	/* set internal state too */

-  cinfo->marker->saw_SOF = FALSE;

-  cinfo->marker->discarded_bytes = 0;

-}

-

-

-/*

- * Initialize the marker reader module.

- * This is called only once, when the decompression object is created.

- */

-

-GLOBAL void

-jinit_marker_reader (j_decompress_ptr cinfo)

-{

-  int i;

-

-  /* Create subobject in permanent pool */

-  cinfo->marker = (struct jpeg_marker_reader *)

-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,

-				SIZEOF(struct jpeg_marker_reader));

-  /* Initialize method pointers */

-  cinfo->marker->reset_marker_reader = reset_marker_reader;

-  cinfo->marker->read_markers = read_markers;

-  cinfo->marker->read_restart_marker = read_restart_marker;

-  cinfo->marker->process_COM = skip_variable;

-  for (i = 0; i < 16; i++)

-    cinfo->marker->process_APPn[i] = skip_variable;

-  cinfo->marker->process_APPn[0] = get_app0;

-  cinfo->marker->process_APPn[14] = get_app14;

-  /* Reset marker processing state */

-  reset_marker_reader(cinfo);

-}

+/*
+ * jdmarker.c
+ *
+ * Copyright (C) 1991-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains routines to decode JPEG datastream markers.
+ * Most of the complexity arises from our desire to support input
+ * suspension: if not all of the data for a marker is available,
+ * we must exit back to the application.  On resumption, we reprocess
+ * the marker.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+
+
+typedef enum {			/* JPEG marker codes */
+  M_SOF0  = 0xc0,
+  M_SOF1  = 0xc1,
+  M_SOF2  = 0xc2,
+  M_SOF3  = 0xc3,
+  
+  M_SOF5  = 0xc5,
+  M_SOF6  = 0xc6,
+  M_SOF7  = 0xc7,
+  
+  M_JPG   = 0xc8,
+  M_SOF9  = 0xc9,
+  M_SOF10 = 0xca,
+  M_SOF11 = 0xcb,
+  
+  M_SOF13 = 0xcd,
+  M_SOF14 = 0xce,
+  M_SOF15 = 0xcf,
+  
+  M_DHT   = 0xc4,
+  
+  M_DAC   = 0xcc,
+  
+  M_RST0  = 0xd0,
+  M_RST1  = 0xd1,
+  M_RST2  = 0xd2,
+  M_RST3  = 0xd3,
+  M_RST4  = 0xd4,
+  M_RST5  = 0xd5,
+  M_RST6  = 0xd6,
+  M_RST7  = 0xd7,
+  
+  M_SOI   = 0xd8,
+  M_EOI   = 0xd9,
+  M_SOS   = 0xda,
+  M_DQT   = 0xdb,
+  M_DNL   = 0xdc,
+  M_DRI   = 0xdd,
+  M_DHP   = 0xde,
+  M_EXP   = 0xdf,
+  
+  M_APP0  = 0xe0,
+  M_APP1  = 0xe1,
+  M_APP2  = 0xe2,
+  M_APP3  = 0xe3,
+  M_APP4  = 0xe4,
+  M_APP5  = 0xe5,
+  M_APP6  = 0xe6,
+  M_APP7  = 0xe7,
+  M_APP8  = 0xe8,
+  M_APP9  = 0xe9,
+  M_APP10 = 0xea,
+  M_APP11 = 0xeb,
+  M_APP12 = 0xec,
+  M_APP13 = 0xed,
+  M_APP14 = 0xee,
+  M_APP15 = 0xef,
+  
+  M_JPG0  = 0xf0,
+  M_JPG13 = 0xfd,
+  M_COM   = 0xfe,
+  
+  M_TEM   = 0x01,
+  
+  M_ERROR = 0x100
+} JPEG_MARKER;
+
+
+/*
+ * Macros for fetching data from the data source module.
+ *
+ * At all times, cinfo->src->next_input_byte and ->bytes_in_buffer reflect
+ * the current restart point; we update them only when we have reached a
+ * suitable place to restart if a suspension occurs.
+ */
+
+/* Declare and initialize local copies of input pointer/count */
+#define INPUT_VARS(cinfo)  \
+	struct jpeg_source_mgr * datasrc = (cinfo)->src;  \
+	const JOCTET * next_input_byte = datasrc->next_input_byte;  \
+	size_t bytes_in_buffer = datasrc->bytes_in_buffer
+
+/* Unload the local copies --- do this only at a restart boundary */
+#define INPUT_SYNC(cinfo)  \
+	( datasrc->next_input_byte = next_input_byte,  \
+	  datasrc->bytes_in_buffer = bytes_in_buffer )
+
+/* Reload the local copies --- seldom used except in MAKE_BYTE_AVAIL */
+#define INPUT_RELOAD(cinfo)  \
+	( next_input_byte = datasrc->next_input_byte,  \
+	  bytes_in_buffer = datasrc->bytes_in_buffer )
+
+/* Internal macro for INPUT_BYTE and INPUT_2BYTES: make a byte available.
+ * Note we do *not* do INPUT_SYNC before calling fill_input_buffer,
+ * but we must reload the local copies after a successful fill.
+ */
+#define MAKE_BYTE_AVAIL(cinfo,action)  \
+	if (bytes_in_buffer == 0) {  \
+	  if (! (*datasrc->fill_input_buffer) (cinfo))  \
+	    { action; }  \
+	  INPUT_RELOAD(cinfo);  \
+	}  \
+	bytes_in_buffer--
+
+/* Read a byte into variable V.
+ * If must suspend, take the specified action (typically "return FALSE").
+ */
+#define INPUT_BYTE(cinfo,V,action)  \
+	MAKESTMT( MAKE_BYTE_AVAIL(cinfo,action); \
+		  V = GETJOCTET(*next_input_byte++); )
+
+/* As above, but read two bytes interpreted as an unsigned 16-bit integer.
+ * V should be declared unsigned int or perhaps INT32.
+ */
+#define INPUT_2BYTES(cinfo,V,action)  \
+	MAKESTMT( MAKE_BYTE_AVAIL(cinfo,action); \
+		  V = ((unsigned int) GETJOCTET(*next_input_byte++)) << 8; \
+		  MAKE_BYTE_AVAIL(cinfo,action); \
+		  V += GETJOCTET(*next_input_byte++); )
+
+
+/*
+ * Routines to process JPEG markers.
+ *
+ * Entry condition: JPEG marker itself has been read and its code saved
+ *   in cinfo->unread_marker; input restart point is just after the marker.
+ *
+ * Exit: if return TRUE, have read and processed any parameters, and have
+ *   updated the restart point to point after the parameters.
+ *   If return FALSE, was forced to suspend before reaching end of
+ *   marker parameters; restart point has not been moved.  Same routine
+ *   will be called again after application supplies more input data.
+ *
+ * This approach to suspension assumes that all of a marker's parameters can
+ * fit into a single input bufferload.  This should hold for "normal"
+ * markers.  Some COM/APPn markers might have large parameter segments,
+ * but we use skip_input_data to get past those, and thereby put the problem
+ * on the source manager's shoulders.
+ *
+ * Note that we don't bother to avoid duplicate trace messages if a
+ * suspension occurs within marker parameters.  Other side effects
+ * require more care.
+ */
+
+
+LOCAL boolean
+get_soi (j_decompress_ptr cinfo)
+/* Process an SOI marker */
+{
+  int i;
+  
+  TRACEMS(cinfo, 1, JTRC_SOI);
+
+  if (cinfo->marker->saw_SOI)
+    ERREXIT(cinfo, JERR_SOI_DUPLICATE);
+
+  /* Reset all parameters that are defined to be reset by SOI */
+
+  for (i = 0; i < NUM_ARITH_TBLS; i++) {
+    cinfo->arith_dc_L[i] = 0;
+    cinfo->arith_dc_U[i] = 1;
+    cinfo->arith_ac_K[i] = 5;
+  }
+  cinfo->restart_interval = 0;
+
+  /* Set initial assumptions for colorspace etc */
+
+  cinfo->jpeg_color_space = JCS_UNKNOWN;
+  cinfo->CCIR601_sampling = FALSE; /* Assume non-CCIR sampling??? */
+
+  cinfo->saw_JFIF_marker = FALSE;
+  cinfo->density_unit = 0;	/* set default JFIF APP0 values */
+  cinfo->X_density = 1;
+  cinfo->Y_density = 1;
+  cinfo->saw_Adobe_marker = FALSE;
+  cinfo->Adobe_transform = 0;
+
+  cinfo->marker->saw_SOI = TRUE;
+
+  return TRUE;
+}
+
+
+LOCAL boolean
+get_sof (j_decompress_ptr cinfo, boolean is_prog, boolean is_arith)
+/* Process a SOFn marker */
+{
+  INT32 length;
+  int c, ci;
+  jpeg_component_info * compptr;
+  INPUT_VARS(cinfo);
+
+  cinfo->progressive_mode = is_prog;
+  cinfo->arith_code = is_arith;
+
+  INPUT_2BYTES(cinfo, length, return FALSE);
+
+  INPUT_BYTE(cinfo, cinfo->data_precision, return FALSE);
+  INPUT_2BYTES(cinfo, cinfo->image_height, return FALSE);
+  INPUT_2BYTES(cinfo, cinfo->image_width, return FALSE);
+  INPUT_BYTE(cinfo, cinfo->num_components, return FALSE);
+
+  length -= 8;
+
+  TRACEMS4(cinfo, 1, JTRC_SOF, cinfo->unread_marker,
+	   (int) cinfo->image_width, (int) cinfo->image_height,
+	   cinfo->num_components);
+
+  if (cinfo->marker->saw_SOF)
+    ERREXIT(cinfo, JERR_SOF_DUPLICATE);
+
+  /* We don't support files in which the image height is initially specified */
+  /* as 0 and is later redefined by DNL.  As long as we have to check that,  */
+  /* might as well have a general sanity check. */
+  if (cinfo->image_height <= 0 || cinfo->image_width <= 0
+      || cinfo->num_components <= 0)
+    ERREXIT(cinfo, JERR_EMPTY_IMAGE);
+
+  if (length != (cinfo->num_components * 3))
+    ERREXIT(cinfo, JERR_BAD_LENGTH);
+
+  if (cinfo->comp_info == NULL)	/* do only once, even if suspend */
+    cinfo->comp_info = (jpeg_component_info *) (*cinfo->mem->alloc_small)
+			((j_common_ptr) cinfo, JPOOL_IMAGE,
+			 cinfo->num_components * SIZEOF(jpeg_component_info));
+  
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    compptr->component_index = ci;
+    INPUT_BYTE(cinfo, compptr->component_id, return FALSE);
+    INPUT_BYTE(cinfo, c, return FALSE);
+    compptr->h_samp_factor = (c >> 4) & 15;
+    compptr->v_samp_factor = (c     ) & 15;
+    INPUT_BYTE(cinfo, compptr->quant_tbl_no, return FALSE);
+
+    TRACEMS4(cinfo, 1, JTRC_SOF_COMPONENT,
+	     compptr->component_id, compptr->h_samp_factor,
+	     compptr->v_samp_factor, compptr->quant_tbl_no);
+  }
+
+  cinfo->marker->saw_SOF = TRUE;
+
+  INPUT_SYNC(cinfo);
+  return TRUE;
+}
+
+
+LOCAL boolean
+get_sos (j_decompress_ptr cinfo)
+/* Process a SOS marker */
+{
+  INT32 length;
+  int i, ci, n, c, cc;
+  jpeg_component_info * compptr;
+  INPUT_VARS(cinfo);
+
+  if (! cinfo->marker->saw_SOF)
+    ERREXIT(cinfo, JERR_SOS_NO_SOF);
+
+  INPUT_2BYTES(cinfo, length, return FALSE);
+
+  INPUT_BYTE(cinfo, n, return FALSE); /* Number of components */
+
+  if (length != (n * 2 + 6) || n < 1 || n > MAX_COMPS_IN_SCAN)
+    ERREXIT(cinfo, JERR_BAD_LENGTH);
+
+  TRACEMS1(cinfo, 1, JTRC_SOS, n);
+
+  cinfo->comps_in_scan = n;
+
+  /* Collect the component-spec parameters */
+
+  for (i = 0; i < n; i++) {
+    INPUT_BYTE(cinfo, cc, return FALSE);
+    INPUT_BYTE(cinfo, c, return FALSE);
+    
+    for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+	 ci++, compptr++) {
+      if (cc == compptr->component_id)
+	goto id_found;
+    }
+
+    ERREXIT1(cinfo, JERR_BAD_COMPONENT_ID, cc);
+
+  id_found:
+
+    cinfo->cur_comp_info[i] = compptr;
+    compptr->dc_tbl_no = (c >> 4) & 15;
+    compptr->ac_tbl_no = (c     ) & 15;
+    
+    TRACEMS3(cinfo, 1, JTRC_SOS_COMPONENT, cc,
+	     compptr->dc_tbl_no, compptr->ac_tbl_no);
+  }
+
+  /* Collect the additional scan parameters Ss, Se, Ah/Al. */
+  INPUT_BYTE(cinfo, c, return FALSE);
+  cinfo->Ss = c;
+  INPUT_BYTE(cinfo, c, return FALSE);
+  cinfo->Se = c;
+  INPUT_BYTE(cinfo, c, return FALSE);
+  cinfo->Ah = (c >> 4) & 15;
+  cinfo->Al = (c     ) & 15;
+
+  TRACEMS4(cinfo, 1, JTRC_SOS_PARAMS, cinfo->Ss, cinfo->Se,
+	   cinfo->Ah, cinfo->Al);
+
+  /* Prepare to scan data & restart markers */
+  cinfo->marker->next_restart_num = 0;
+
+  /* Count another SOS marker */
+  cinfo->input_scan_number++;
+
+  INPUT_SYNC(cinfo);
+  return TRUE;
+}
+
+
+METHODDEF boolean
+get_app0 (j_decompress_ptr cinfo)
+/* Process an APP0 marker */
+{
+#define JFIF_LEN 14
+  INT32 length;
+  UINT8 b[JFIF_LEN];
+  int buffp;
+  INPUT_VARS(cinfo);
+
+  INPUT_2BYTES(cinfo, length, return FALSE);
+  length -= 2;
+
+  /* See if a JFIF APP0 marker is present */
+
+  if (length >= JFIF_LEN) {
+    for (buffp = 0; buffp < JFIF_LEN; buffp++)
+      INPUT_BYTE(cinfo, b[buffp], return FALSE);
+    length -= JFIF_LEN;
+
+    if (b[0]==0x4A && b[1]==0x46 && b[2]==0x49 && b[3]==0x46 && b[4]==0) {
+      /* Found JFIF APP0 marker: check version */
+      /* Major version must be 1, anything else signals an incompatible change.
+       * We used to treat this as an error, but now it's a nonfatal warning,
+       * because some bozo at Hijaak couldn't read the spec.
+       * Minor version should be 0..2, but process anyway if newer.
+       */
+      if (b[5] != 1)
+	WARNMS2(cinfo, JWRN_JFIF_MAJOR, b[5], b[6]);
+      else if (b[6] > 2)
+	TRACEMS2(cinfo, 1, JTRC_JFIF_MINOR, b[5], b[6]);
+      /* Save info */
+      cinfo->saw_JFIF_marker = TRUE;
+      cinfo->density_unit = b[7];
+      cinfo->X_density = (b[8] << 8) + b[9];
+      cinfo->Y_density = (b[10] << 8) + b[11];
+      TRACEMS3(cinfo, 1, JTRC_JFIF,
+	       cinfo->X_density, cinfo->Y_density, cinfo->density_unit);
+      if (b[12] | b[13])
+	TRACEMS2(cinfo, 1, JTRC_JFIF_THUMBNAIL, b[12], b[13]);
+      if (length != ((INT32) b[12] * (INT32) b[13] * (INT32) 3))
+	TRACEMS1(cinfo, 1, JTRC_JFIF_BADTHUMBNAILSIZE, (int) length);
+    } else {
+      /* Start of APP0 does not match "JFIF" */
+      TRACEMS1(cinfo, 1, JTRC_APP0, (int) length + JFIF_LEN);
+    }
+  } else {
+    /* Too short to be JFIF marker */
+    TRACEMS1(cinfo, 1, JTRC_APP0, (int) length);
+  }
+
+  INPUT_SYNC(cinfo);
+  if (length > 0)		/* skip any remaining data -- could be lots */
+    (*cinfo->src->skip_input_data) (cinfo, (long) length);
+
+  return TRUE;
+}
+
+
+METHODDEF boolean
+get_app14 (j_decompress_ptr cinfo)
+/* Process an APP14 marker */
+{
+#define ADOBE_LEN 12
+  INT32 length;
+  UINT8 b[ADOBE_LEN];
+  int buffp;
+  unsigned int version, flags0, flags1, transform;
+  INPUT_VARS(cinfo);
+
+  INPUT_2BYTES(cinfo, length, return FALSE);
+  length -= 2;
+
+  /* See if an Adobe APP14 marker is present */
+
+  if (length >= ADOBE_LEN) {
+    for (buffp = 0; buffp < ADOBE_LEN; buffp++)
+      INPUT_BYTE(cinfo, b[buffp], return FALSE);
+    length -= ADOBE_LEN;
+
+    if (b[0]==0x41 && b[1]==0x64 && b[2]==0x6F && b[3]==0x62 && b[4]==0x65) {
+      /* Found Adobe APP14 marker */
+      version = (b[5] << 8) + b[6];
+      flags0 = (b[7] << 8) + b[8];
+      flags1 = (b[9] << 8) + b[10];
+      transform = b[11];
+      TRACEMS4(cinfo, 1, JTRC_ADOBE, version, flags0, flags1, transform);
+      cinfo->saw_Adobe_marker = TRUE;
+      cinfo->Adobe_transform = (UINT8) transform;
+    } else {
+      /* Start of APP14 does not match "Adobe" */
+      TRACEMS1(cinfo, 1, JTRC_APP14, (int) length + ADOBE_LEN);
+    }
+  } else {
+    /* Too short to be Adobe marker */
+    TRACEMS1(cinfo, 1, JTRC_APP14, (int) length);
+  }
+
+  INPUT_SYNC(cinfo);
+  if (length > 0)		/* skip any remaining data -- could be lots */
+    (*cinfo->src->skip_input_data) (cinfo, (long) length);
+
+  return TRUE;
+}
+
+
+LOCAL boolean
+get_dac (j_decompress_ptr cinfo)
+/* Process a DAC marker */
+{
+  INT32 length;
+  int index, val;
+  INPUT_VARS(cinfo);
+
+  INPUT_2BYTES(cinfo, length, return FALSE);
+  length -= 2;
+  
+  while (length > 0) {
+    INPUT_BYTE(cinfo, index, return FALSE);
+    INPUT_BYTE(cinfo, val, return FALSE);
+
+    length -= 2;
+
+    TRACEMS2(cinfo, 1, JTRC_DAC, index, val);
+
+    if (index < 0 || index >= (2*NUM_ARITH_TBLS))
+      ERREXIT1(cinfo, JERR_DAC_INDEX, index);
+
+    if (index >= NUM_ARITH_TBLS) { /* define AC table */
+      cinfo->arith_ac_K[index-NUM_ARITH_TBLS] = (UINT8) val;
+    } else {			/* define DC table */
+      cinfo->arith_dc_L[index] = (UINT8) (val & 0x0F);
+      cinfo->arith_dc_U[index] = (UINT8) (val >> 4);
+      if (cinfo->arith_dc_L[index] > cinfo->arith_dc_U[index])
+	ERREXIT1(cinfo, JERR_DAC_VALUE, val);
+    }
+  }
+
+  INPUT_SYNC(cinfo);
+  return TRUE;
+}
+
+
+LOCAL boolean
+get_dht (j_decompress_ptr cinfo)
+/* Process a DHT marker */
+{
+  INT32 length;
+  UINT8 bits[17];
+  UINT8 huffval[256];
+  int i, index, count;
+  JHUFF_TBL **htblptr;
+  INPUT_VARS(cinfo);
+
+  INPUT_2BYTES(cinfo, length, return FALSE);
+  length -= 2;
+  
+  while (length > 0) {
+    INPUT_BYTE(cinfo, index, return FALSE);
+
+    TRACEMS1(cinfo, 1, JTRC_DHT, index);
+      
+    bits[0] = 0;
+    count = 0;
+    for (i = 1; i <= 16; i++) {
+      INPUT_BYTE(cinfo, bits[i], return FALSE);
+      count += bits[i];
+    }
+
+    length -= 1 + 16;
+
+    TRACEMS8(cinfo, 2, JTRC_HUFFBITS,
+	     bits[1], bits[2], bits[3], bits[4],
+	     bits[5], bits[6], bits[7], bits[8]);
+    TRACEMS8(cinfo, 2, JTRC_HUFFBITS,
+	     bits[9], bits[10], bits[11], bits[12],
+	     bits[13], bits[14], bits[15], bits[16]);
+
+    if (count > 256 || ((INT32) count) > length)
+      ERREXIT(cinfo, JERR_DHT_COUNTS);
+
+    for (i = 0; i < count; i++)
+      INPUT_BYTE(cinfo, huffval[i], return FALSE);
+
+    length -= count;
+
+    if (index & 0x10) {		/* AC table definition */
+      index -= 0x10;
+      htblptr = &cinfo->ac_huff_tbl_ptrs[index];
+    } else {			/* DC table definition */
+      htblptr = &cinfo->dc_huff_tbl_ptrs[index];
+    }
+
+    if (index < 0 || index >= NUM_HUFF_TBLS)
+      ERREXIT1(cinfo, JERR_DHT_INDEX, index);
+
+    if (*htblptr == NULL)
+      *htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo);
+  
+    MEMCOPY((*htblptr)->bits, bits, SIZEOF((*htblptr)->bits));
+    MEMCOPY((*htblptr)->huffval, huffval, SIZEOF((*htblptr)->huffval));
+  }
+
+  INPUT_SYNC(cinfo);
+  return TRUE;
+}
+
+
+LOCAL boolean
+get_dqt (j_decompress_ptr cinfo)
+/* Process a DQT marker */
+{
+  INT32 length;
+  int n, i, prec;
+  unsigned int tmp;
+  JQUANT_TBL *quant_ptr;
+  INPUT_VARS(cinfo);
+
+  INPUT_2BYTES(cinfo, length, return FALSE);
+  length -= 2;
+
+  while (length > 0) {
+    INPUT_BYTE(cinfo, n, return FALSE);
+    prec = n >> 4;
+    n &= 0x0F;
+
+    TRACEMS2(cinfo, 1, JTRC_DQT, n, prec);
+
+    if (n >= NUM_QUANT_TBLS)
+      ERREXIT1(cinfo, JERR_DQT_INDEX, n);
+      
+    if (cinfo->quant_tbl_ptrs[n] == NULL)
+      cinfo->quant_tbl_ptrs[n] = jpeg_alloc_quant_table((j_common_ptr) cinfo);
+    quant_ptr = cinfo->quant_tbl_ptrs[n];
+
+    for (i = 0; i < DCTSIZE2; i++) {
+      if (prec)
+	INPUT_2BYTES(cinfo, tmp, return FALSE);
+      else
+	INPUT_BYTE(cinfo, tmp, return FALSE);
+      quant_ptr->quantval[i] = (UINT16) tmp;
+    }
+
+    for (i = 0; i < DCTSIZE2; i += 8) {
+      TRACEMS8(cinfo, 2, JTRC_QUANTVALS,
+	       quant_ptr->quantval[i  ], quant_ptr->quantval[i+1],
+	       quant_ptr->quantval[i+2], quant_ptr->quantval[i+3],
+	       quant_ptr->quantval[i+4], quant_ptr->quantval[i+5],
+	       quant_ptr->quantval[i+6], quant_ptr->quantval[i+7]);
+    }
+
+    length -= DCTSIZE2+1;
+    if (prec) length -= DCTSIZE2;
+  }
+
+  INPUT_SYNC(cinfo);
+  return TRUE;
+}
+
+
+LOCAL boolean
+get_dri (j_decompress_ptr cinfo)
+/* Process a DRI marker */
+{
+  INT32 length;
+  unsigned int tmp;
+  INPUT_VARS(cinfo);
+
+  INPUT_2BYTES(cinfo, length, return FALSE);
+  
+  if (length != 4)
+    ERREXIT(cinfo, JERR_BAD_LENGTH);
+
+  INPUT_2BYTES(cinfo, tmp, return FALSE);
+
+  TRACEMS1(cinfo, 1, JTRC_DRI, tmp);
+
+  cinfo->restart_interval = tmp;
+
+  INPUT_SYNC(cinfo);
+  return TRUE;
+}
+
+
+METHODDEF boolean
+skip_variable (j_decompress_ptr cinfo)
+/* Skip over an unknown or uninteresting variable-length marker */
+{
+  INT32 length;
+  INPUT_VARS(cinfo);
+
+  INPUT_2BYTES(cinfo, length, return FALSE);
+  
+  TRACEMS2(cinfo, 1, JTRC_MISC_MARKER, cinfo->unread_marker, (int) length);
+
+  INPUT_SYNC(cinfo);		/* do before skip_input_data */
+  (*cinfo->src->skip_input_data) (cinfo, (long) length - 2L);
+
+  return TRUE;
+}
+
+
+/*
+ * Find the next JPEG marker, save it in cinfo->unread_marker.
+ * Returns FALSE if had to suspend before reaching a marker;
+ * in that case cinfo->unread_marker is unchanged.
+ *
+ * Note that the result might not be a valid marker code,
+ * but it will never be 0 or FF.
+ */
+
+LOCAL boolean
+next_marker (j_decompress_ptr cinfo)
+{
+  int c;
+  INPUT_VARS(cinfo);
+
+  for (;;) {
+    INPUT_BYTE(cinfo, c, return FALSE);
+    /* Skip any non-FF bytes.
+     * This may look a bit inefficient, but it will not occur in a valid file.
+     * We sync after each discarded byte so that a suspending data source
+     * can discard the byte from its buffer.
+     */
+    while (c != 0xFF) {
+      cinfo->marker->discarded_bytes++;
+      INPUT_SYNC(cinfo);
+      INPUT_BYTE(cinfo, c, return FALSE);
+    }
+    /* This loop swallows any duplicate FF bytes.  Extra FFs are legal as
+     * pad bytes, so don't count them in discarded_bytes.  We assume there
+     * will not be so many consecutive FF bytes as to overflow a suspending
+     * data source's input buffer.
+     */
+    do {
+      INPUT_BYTE(cinfo, c, return FALSE);
+    } while (c == 0xFF);
+    if (c != 0)
+      break;			/* found a valid marker, exit loop */
+    /* Reach here if we found a stuffed-zero data sequence (FF/00).
+     * Discard it and loop back to try again.
+     */
+    cinfo->marker->discarded_bytes += 2;
+    INPUT_SYNC(cinfo);
+  }
+
+  if (cinfo->marker->discarded_bytes != 0) {
+    WARNMS2(cinfo, JWRN_EXTRANEOUS_DATA, cinfo->marker->discarded_bytes, c);
+    cinfo->marker->discarded_bytes = 0;
+  }
+
+  cinfo->unread_marker = c;
+
+  INPUT_SYNC(cinfo);
+  return TRUE;
+}
+
+
+LOCAL boolean
+first_marker (j_decompress_ptr cinfo)
+/* Like next_marker, but used to obtain the initial SOI marker. */
+/* For this marker, we do not allow preceding garbage or fill; otherwise,
+ * we might well scan an entire input file before realizing it ain't JPEG.
+ * If an application wants to process non-JFIF files, it must seek to the
+ * SOI before calling the JPEG library.
+ */
+{
+  int c, c2;
+  INPUT_VARS(cinfo);
+
+  INPUT_BYTE(cinfo, c, return FALSE);
+  INPUT_BYTE(cinfo, c2, return FALSE);
+  if (c != 0xFF || c2 != (int) M_SOI)
+    ERREXIT2(cinfo, JERR_NO_SOI, c, c2);
+
+  cinfo->unread_marker = c2;
+
+  INPUT_SYNC(cinfo);
+  return TRUE;
+}
+
+
+/*
+ * Read markers until SOS or EOI.
+ *
+ * Returns same codes as are defined for jpeg_consume_input:
+ * JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI.
+ */
+
+METHODDEF int
+read_markers (j_decompress_ptr cinfo)
+{
+  /* Outer loop repeats once for each marker. */
+  for (;;) {
+    /* Collect the marker proper, unless we already did. */
+    /* NB: first_marker() enforces the requirement that SOI appear first. */
+    if (cinfo->unread_marker == 0) {
+      if (! cinfo->marker->saw_SOI) {
+	if (! first_marker(cinfo))
+	  return JPEG_SUSPENDED;
+      } else {
+	if (! next_marker(cinfo))
+	  return JPEG_SUSPENDED;
+      }
+    }
+    /* At this point cinfo->unread_marker contains the marker code and the
+     * input point is just past the marker proper, but before any parameters.
+     * A suspension will cause us to return with this state still true.
+     */
+    switch (cinfo->unread_marker) {
+    case M_SOI:
+      if (! get_soi(cinfo))
+	return JPEG_SUSPENDED;
+      break;
+
+    case M_SOF0:		/* Baseline */
+    case M_SOF1:		/* Extended sequential, Huffman */
+      if (! get_sof(cinfo, FALSE, FALSE))
+	return JPEG_SUSPENDED;
+      break;
+
+    case M_SOF2:		/* Progressive, Huffman */
+      if (! get_sof(cinfo, TRUE, FALSE))
+	return JPEG_SUSPENDED;
+      break;
+
+    case M_SOF9:		/* Extended sequential, arithmetic */
+      if (! get_sof(cinfo, FALSE, TRUE))
+	return JPEG_SUSPENDED;
+      break;
+
+    case M_SOF10:		/* Progressive, arithmetic */
+      if (! get_sof(cinfo, TRUE, TRUE))
+	return JPEG_SUSPENDED;
+      break;
+
+    /* Currently unsupported SOFn types */
+    case M_SOF3:		/* Lossless, Huffman */
+    case M_SOF5:		/* Differential sequential, Huffman */
+    case M_SOF6:		/* Differential progressive, Huffman */
+    case M_SOF7:		/* Differential lossless, Huffman */
+    case M_JPG:			/* Reserved for JPEG extensions */
+    case M_SOF11:		/* Lossless, arithmetic */
+    case M_SOF13:		/* Differential sequential, arithmetic */
+    case M_SOF14:		/* Differential progressive, arithmetic */
+    case M_SOF15:		/* Differential lossless, arithmetic */
+      ERREXIT1(cinfo, JERR_SOF_UNSUPPORTED, cinfo->unread_marker);
+      break;
+
+    case M_SOS:
+      if (! get_sos(cinfo))
+	return JPEG_SUSPENDED;
+      cinfo->unread_marker = 0;	/* processed the marker */
+      return JPEG_REACHED_SOS;
+    
+    case M_EOI:
+      TRACEMS(cinfo, 1, JTRC_EOI);
+      cinfo->unread_marker = 0;	/* processed the marker */
+      return JPEG_REACHED_EOI;
+      
+    case M_DAC:
+      if (! get_dac(cinfo))
+	return JPEG_SUSPENDED;
+      break;
+      
+    case M_DHT:
+      if (! get_dht(cinfo))
+	return JPEG_SUSPENDED;
+      break;
+      
+    case M_DQT:
+      if (! get_dqt(cinfo))
+	return JPEG_SUSPENDED;
+      break;
+      
+    case M_DRI:
+      if (! get_dri(cinfo))
+	return JPEG_SUSPENDED;
+      break;
+      
+    case M_APP0:
+    case M_APP1:
+    case M_APP2:
+    case M_APP3:
+    case M_APP4:
+    case M_APP5:
+    case M_APP6:
+    case M_APP7:
+    case M_APP8:
+    case M_APP9:
+    case M_APP10:
+    case M_APP11:
+    case M_APP12:
+    case M_APP13:
+    case M_APP14:
+    case M_APP15:
+      if (! (*cinfo->marker->process_APPn[cinfo->unread_marker - (int) M_APP0]) (cinfo))
+	return JPEG_SUSPENDED;
+      break;
+      
+    case M_COM:
+      if (! (*cinfo->marker->process_COM) (cinfo))
+	return JPEG_SUSPENDED;
+      break;
+
+    case M_RST0:		/* these are all parameterless */
+    case M_RST1:
+    case M_RST2:
+    case M_RST3:
+    case M_RST4:
+    case M_RST5:
+    case M_RST6:
+    case M_RST7:
+    case M_TEM:
+      TRACEMS1(cinfo, 1, JTRC_PARMLESS_MARKER, cinfo->unread_marker);
+      break;
+
+    case M_DNL:			/* Ignore DNL ... perhaps the wrong thing */
+      if (! skip_variable(cinfo))
+	return JPEG_SUSPENDED;
+      break;
+
+    default:			/* must be DHP, EXP, JPGn, or RESn */
+      /* For now, we treat the reserved markers as fatal errors since they are
+       * likely to be used to signal incompatible JPEG Part 3 extensions.
+       * Once the JPEG 3 version-number marker is well defined, this code
+       * ought to change!
+       */
+      ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, cinfo->unread_marker);
+      break;
+    }
+    /* Successfully processed marker, so reset state variable */
+    cinfo->unread_marker = 0;
+  } /* end loop */
+}
+
+
+/*
+ * Read a restart marker, which is expected to appear next in the datastream;
+ * if the marker is not there, take appropriate recovery action.
+ * Returns FALSE if suspension is required.
+ *
+ * This is called by the entropy decoder after it has read an appropriate
+ * number of MCUs.  cinfo->unread_marker may be nonzero if the entropy decoder
+ * has already read a marker from the data source.  Under normal conditions
+ * cinfo->unread_marker will be reset to 0 before returning; if not reset,
+ * it holds a marker which the decoder will be unable to read past.
+ */
+
+METHODDEF boolean
+read_restart_marker (j_decompress_ptr cinfo)
+{
+  /* Obtain a marker unless we already did. */
+  /* Note that next_marker will complain if it skips any data. */
+  if (cinfo->unread_marker == 0) {
+    if (! next_marker(cinfo))
+      return FALSE;
+  }
+
+  if (cinfo->unread_marker ==
+      ((int) M_RST0 + cinfo->marker->next_restart_num)) {
+    /* Normal case --- swallow the marker and let entropy decoder continue */
+    TRACEMS1(cinfo, 2, JTRC_RST, cinfo->marker->next_restart_num);
+    cinfo->unread_marker = 0;
+  } else {
+    /* Uh-oh, the restart markers have been messed up. */
+    /* Let the data source manager determine how to resync. */
+    if (! (*cinfo->src->resync_to_restart) (cinfo,
+					    cinfo->marker->next_restart_num))
+      return FALSE;
+  }
+
+  /* Update next-restart state */
+  cinfo->marker->next_restart_num = (cinfo->marker->next_restart_num + 1) & 7;
+
+  return TRUE;
+}
+
+
+/*
+ * This is the default resync_to_restart method for data source managers
+ * to use if they don't have any better approach.  Some data source managers
+ * may be able to back up, or may have additional knowledge about the data
+ * which permits a more intelligent recovery strategy; such managers would
+ * presumably supply their own resync method.
+ *
+ * read_restart_marker calls resync_to_restart if it finds a marker other than
+ * the restart marker it was expecting.  (This code is *not* used unless
+ * a nonzero restart interval has been declared.)  cinfo->unread_marker is
+ * the marker code actually found (might be anything, except 0 or FF).
+ * The desired restart marker number (0..7) is passed as a parameter.
+ * This routine is supposed to apply whatever error recovery strategy seems
+ * appropriate in order to position the input stream to the next data segment.
+ * Note that cinfo->unread_marker is treated as a marker appearing before
+ * the current data-source input point; usually it should be reset to zero
+ * before returning.
+ * Returns FALSE if suspension is required.
+ *
+ * This implementation is substantially constrained by wanting to treat the
+ * input as a data stream; this means we can't back up.  Therefore, we have
+ * only the following actions to work with:
+ *   1. Simply discard the marker and let the entropy decoder resume at next
+ *      byte of file.
+ *   2. Read forward until we find another marker, discarding intervening
+ *      data.  (In theory we could look ahead within the current bufferload,
+ *      without having to discard data if we don't find the desired marker.
+ *      This idea is not implemented here, in part because it makes behavior
+ *      dependent on buffer size and chance buffer-boundary positions.)
+ *   3. Leave the marker unread (by failing to zero cinfo->unread_marker).
+ *      This will cause the entropy decoder to process an empty data segment,
+ *      inserting dummy zeroes, and then we will reprocess the marker.
+ *
+ * #2 is appropriate if we think the desired marker lies ahead, while #3 is
+ * appropriate if the found marker is a future restart marker (indicating
+ * that we have missed the desired restart marker, probably because it got
+ * corrupted).
+ * We apply #2 or #3 if the found marker is a restart marker no more than
+ * two counts behind or ahead of the expected one.  We also apply #2 if the
+ * found marker is not a legal JPEG marker code (it's certainly bogus data).
+ * If the found marker is a restart marker more than 2 counts away, we do #1
+ * (too much risk that the marker is erroneous; with luck we will be able to
+ * resync at some future point).
+ * For any valid non-restart JPEG marker, we apply #3.  This keeps us from
+ * overrunning the end of a scan.  An implementation limited to single-scan
+ * files might find it better to apply #2 for markers other than EOI, since
+ * any other marker would have to be bogus data in that case.
+ */
+
+GLOBAL boolean
+jpeg_resync_to_restart (j_decompress_ptr cinfo, int desired)
+{
+  int marker = cinfo->unread_marker;
+  int action = 1;
+  
+  /* Always put up a warning. */
+  WARNMS2(cinfo, JWRN_MUST_RESYNC, marker, desired);
+  
+  /* Outer loop handles repeated decision after scanning forward. */
+  for (;;) {
+    if (marker < (int) M_SOF0)
+      action = 2;		/* invalid marker */
+    else if (marker < (int) M_RST0 || marker > (int) M_RST7)
+      action = 3;		/* valid non-restart marker */
+    else {
+      if (marker == ((int) M_RST0 + ((desired+1) & 7)) ||
+	  marker == ((int) M_RST0 + ((desired+2) & 7)))
+	action = 3;		/* one of the next two expected restarts */
+      else if (marker == ((int) M_RST0 + ((desired-1) & 7)) ||
+	       marker == ((int) M_RST0 + ((desired-2) & 7)))
+	action = 2;		/* a prior restart, so advance */
+      else
+	action = 1;		/* desired restart or too far away */
+    }
+    TRACEMS2(cinfo, 4, JTRC_RECOVERY_ACTION, marker, action);
+    switch (action) {
+    case 1:
+      /* Discard marker and let entropy decoder resume processing. */
+      cinfo->unread_marker = 0;
+      return TRUE;
+    case 2:
+      /* Scan to the next marker, and repeat the decision loop. */
+      if (! next_marker(cinfo))
+	return FALSE;
+      marker = cinfo->unread_marker;
+      break;
+    case 3:
+      /* Return without advancing past this marker. */
+      /* Entropy decoder will be forced to process an empty segment. */
+      return TRUE;
+    }
+  } /* end loop */
+}
+
+
+/*
+ * Reset marker processing state to begin a fresh datastream.
+ */
+
+METHODDEF void
+reset_marker_reader (j_decompress_ptr cinfo)
+{
+  cinfo->comp_info = NULL;		/* until allocated by get_sof */
+  cinfo->input_scan_number = 0;		/* no SOS seen yet */
+  cinfo->unread_marker = 0;		/* no pending marker */
+  cinfo->marker->saw_SOI = FALSE;	/* set internal state too */
+  cinfo->marker->saw_SOF = FALSE;
+  cinfo->marker->discarded_bytes = 0;
+}
+
+
+/*
+ * Initialize the marker reader module.
+ * This is called only once, when the decompression object is created.
+ */
+
+GLOBAL void
+jinit_marker_reader (j_decompress_ptr cinfo)
+{
+  int i;
+
+  /* Create subobject in permanent pool */
+  cinfo->marker = (struct jpeg_marker_reader *)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
+				SIZEOF(struct jpeg_marker_reader));
+  /* Initialize method pointers */
+  cinfo->marker->reset_marker_reader = reset_marker_reader;
+  cinfo->marker->read_markers = read_markers;
+  cinfo->marker->read_restart_marker = read_restart_marker;
+  cinfo->marker->process_COM = skip_variable;
+  for (i = 0; i < 16; i++)
+    cinfo->marker->process_APPn[i] = skip_variable;
+  cinfo->marker->process_APPn[0] = get_app0;
+  cinfo->marker->process_APPn[14] = get_app14;
+  /* Reset marker processing state */
+  reset_marker_reader(cinfo);
+}
diff --git a/libs/jpeg6/jdmaster.cpp b/libs/jpeg6/jdmaster.cpp
index 64f730f..18e0880 100755
--- a/libs/jpeg6/jdmaster.cpp
+++ b/libs/jpeg6/jdmaster.cpp
@@ -1,557 +1,557 @@
-/*

- * jdmaster.c

- *

- * Copyright (C) 1991-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains master control logic for the JPEG decompressor.

- * These routines are concerned with selecting the modules to be executed

- * and with determining the number of passes and the work to be done in each

- * pass.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-

-

-/* Private state */

-

-typedef struct {

-  struct jpeg_decomp_master pub; /* public fields */

-

-  int pass_number;		/* # of passes completed */

-

-  boolean using_merged_upsample; /* TRUE if using merged upsample/cconvert */

-

-  /* Saved references to initialized quantizer modules,

-   * in case we need to switch modes.

-   */

-  struct jpeg_color_quantizer * quantizer_1pass;

-  struct jpeg_color_quantizer * quantizer_2pass;

-} my_decomp_master;

-

-typedef my_decomp_master * my_master_ptr;

-

-

-/*

- * Determine whether merged upsample/color conversion should be used.

- * CRUCIAL: this must match the actual capabilities of jdmerge.c!

- */

-

-LOCAL boolean

-use_merged_upsample (j_decompress_ptr cinfo)

-{

-#ifdef UPSAMPLE_MERGING_SUPPORTED

-  /* Merging is the equivalent of plain box-filter upsampling */

-  if (cinfo->do_fancy_upsampling || cinfo->CCIR601_sampling)

-    return FALSE;

-  /* jdmerge.c only supports YCC=>RGB color conversion */

-  if (cinfo->jpeg_color_space != JCS_YCbCr || cinfo->num_components != 3 ||

-      cinfo->out_color_space != JCS_RGB ||

-      cinfo->out_color_components != RGB_PIXELSIZE)

-    return FALSE;

-  /* and it only handles 2h1v or 2h2v sampling ratios */

-  if (cinfo->comp_info[0].h_samp_factor != 2 ||

-      cinfo->comp_info[1].h_samp_factor != 1 ||

-      cinfo->comp_info[2].h_samp_factor != 1 ||

-      cinfo->comp_info[0].v_samp_factor >  2 ||

-      cinfo->comp_info[1].v_samp_factor != 1 ||

-      cinfo->comp_info[2].v_samp_factor != 1)

-    return FALSE;

-  /* furthermore, it doesn't work if we've scaled the IDCTs differently */

-  if (cinfo->comp_info[0].DCT_scaled_size != cinfo->min_DCT_scaled_size ||

-      cinfo->comp_info[1].DCT_scaled_size != cinfo->min_DCT_scaled_size ||

-      cinfo->comp_info[2].DCT_scaled_size != cinfo->min_DCT_scaled_size)

-    return FALSE;

-  /* ??? also need to test for upsample-time rescaling, when & if supported */

-  return TRUE;			/* by golly, it'll work... */

-#else

-  return FALSE;

-#endif

-}

-

-

-/*

- * Compute output image dimensions and related values.

- * NOTE: this is exported for possible use by application.

- * Hence it mustn't do anything that can't be done twice.

- * Also note that it may be called before the master module is initialized!

- */

-

-GLOBAL void

-jpeg_calc_output_dimensions (j_decompress_ptr cinfo)

-/* Do computations that are needed before master selection phase */

-{

-#if 0	// JDC: commented out to remove warning

-  int ci;

-  jpeg_component_info *compptr;

-#endif

-

-  /* Prevent application from calling me at wrong times */

-  if (cinfo->global_state != DSTATE_READY)

-    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);

-

-#ifdef IDCT_SCALING_SUPPORTED

-

-  /* Compute actual output image dimensions and DCT scaling choices. */

-  if (cinfo->scale_num * 8 <= cinfo->scale_denom) {

-    /* Provide 1/8 scaling */

-    cinfo->output_width = (JDIMENSION)

-      jdiv_round_up((long) cinfo->image_width, 8L);

-    cinfo->output_height = (JDIMENSION)

-      jdiv_round_up((long) cinfo->image_height, 8L);

-    cinfo->min_DCT_scaled_size = 1;

-  } else if (cinfo->scale_num * 4 <= cinfo->scale_denom) {

-    /* Provide 1/4 scaling */

-    cinfo->output_width = (JDIMENSION)

-      jdiv_round_up((long) cinfo->image_width, 4L);

-    cinfo->output_height = (JDIMENSION)

-      jdiv_round_up((long) cinfo->image_height, 4L);

-    cinfo->min_DCT_scaled_size = 2;

-  } else if (cinfo->scale_num * 2 <= cinfo->scale_denom) {

-    /* Provide 1/2 scaling */

-    cinfo->output_width = (JDIMENSION)

-      jdiv_round_up((long) cinfo->image_width, 2L);

-    cinfo->output_height = (JDIMENSION)

-      jdiv_round_up((long) cinfo->image_height, 2L);

-    cinfo->min_DCT_scaled_size = 4;

-  } else {

-    /* Provide 1/1 scaling */

-    cinfo->output_width = cinfo->image_width;

-    cinfo->output_height = cinfo->image_height;

-    cinfo->min_DCT_scaled_size = DCTSIZE;

-  }

-  /* In selecting the actual DCT scaling for each component, we try to

-   * scale up the chroma components via IDCT scaling rather than upsampling.

-   * This saves time if the upsampler gets to use 1:1 scaling.

-   * Note this code assumes that the supported DCT scalings are powers of 2.

-   */

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    int ssize = cinfo->min_DCT_scaled_size;

-    while (ssize < DCTSIZE &&

-	   (compptr->h_samp_factor * ssize * 2 <=

-	    cinfo->max_h_samp_factor * cinfo->min_DCT_scaled_size) &&

-	   (compptr->v_samp_factor * ssize * 2 <=

-	    cinfo->max_v_samp_factor * cinfo->min_DCT_scaled_size)) {

-      ssize = ssize * 2;

-    }

-    compptr->DCT_scaled_size = ssize;

-  }

-

-  /* Recompute downsampled dimensions of components;

-   * application needs to know these if using raw downsampled data.

-   */

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    /* Size in samples, after IDCT scaling */

-    compptr->downsampled_width = (JDIMENSION)

-      jdiv_round_up((long) cinfo->image_width *

-		    (long) (compptr->h_samp_factor * compptr->DCT_scaled_size),

-		    (long) (cinfo->max_h_samp_factor * DCTSIZE));

-    compptr->downsampled_height = (JDIMENSION)

-      jdiv_round_up((long) cinfo->image_height *

-		    (long) (compptr->v_samp_factor * compptr->DCT_scaled_size),

-		    (long) (cinfo->max_v_samp_factor * DCTSIZE));

-  }

-

-#else /* !IDCT_SCALING_SUPPORTED */

-

-  /* Hardwire it to "no scaling" */

-  cinfo->output_width = cinfo->image_width;

-  cinfo->output_height = cinfo->image_height;

-  /* jdinput.c has already initialized DCT_scaled_size to DCTSIZE,

-   * and has computed unscaled downsampled_width and downsampled_height.

-   */

-

-#endif /* IDCT_SCALING_SUPPORTED */

-

-  /* Report number of components in selected colorspace. */

-  /* Probably this should be in the color conversion module... */

-  switch (cinfo->out_color_space) {

-  case JCS_GRAYSCALE:

-    cinfo->out_color_components = 1;

-    break;

-  case JCS_RGB:

-#if RGB_PIXELSIZE != 3

-    cinfo->out_color_components = RGB_PIXELSIZE;

-    break;

-#endif /* else share code with YCbCr */

-  case JCS_YCbCr:

-    cinfo->out_color_components = 3;

-    break;

-  case JCS_CMYK:

-  case JCS_YCCK:

-    cinfo->out_color_components = 4;

-    break;

-  default:			/* else must be same colorspace as in file */

-    cinfo->out_color_components = cinfo->num_components;

-    break;

-  }

-  cinfo->output_components = (cinfo->quantize_colors ? 1 :

-			      cinfo->out_color_components);

-

-  /* See if upsampler will want to emit more than one row at a time */

-  if (use_merged_upsample(cinfo))

-    cinfo->rec_outbuf_height = cinfo->max_v_samp_factor;

-  else

-    cinfo->rec_outbuf_height = 1;

-}

-

-

-/*

- * Several decompression processes need to range-limit values to the range

- * 0..MAXJSAMPLE; the input value may fall somewhat outside this range

- * due to noise introduced by quantization, roundoff error, etc.  These

- * processes are inner loops and need to be as fast as possible.  On most

- * machines, particularly CPUs with pipelines or instruction prefetch,

- * a (subscript-check-less) C table lookup

- *		x = sample_range_limit[x];

- * is faster than explicit tests

- *		if (x < 0)  x = 0;

- *		else if (x > MAXJSAMPLE)  x = MAXJSAMPLE;

- * These processes all use a common table prepared by the routine below.

- *

- * For most steps we can mathematically guarantee that the initial value

- * of x is within MAXJSAMPLE+1 of the legal range, so a table running from

- * -(MAXJSAMPLE+1) to 2*MAXJSAMPLE+1 is sufficient.  But for the initial

- * limiting step (just after the IDCT), a wildly out-of-range value is 

- * possible if the input data is corrupt.  To avoid any chance of indexing

- * off the end of memory and getting a bad-pointer trap, we perform the

- * post-IDCT limiting thus:

- *		x = range_limit[x & MASK];

- * where MASK is 2 bits wider than legal sample data, ie 10 bits for 8-bit

- * samples.  Under normal circumstances this is more than enough range and

- * a correct output will be generated; with bogus input data the mask will

- * cause wraparound, and we will safely generate a bogus-but-in-range output.

- * For the post-IDCT step, we want to convert the data from signed to unsigned

- * representation by adding CENTERJSAMPLE at the same time that we limit it.

- * So the post-IDCT limiting table ends up looking like this:

- *   CENTERJSAMPLE,CENTERJSAMPLE+1,...,MAXJSAMPLE,

- *   MAXJSAMPLE (repeat 2*(MAXJSAMPLE+1)-CENTERJSAMPLE times),

- *   0          (repeat 2*(MAXJSAMPLE+1)-CENTERJSAMPLE times),

- *   0,1,...,CENTERJSAMPLE-1

- * Negative inputs select values from the upper half of the table after

- * masking.

- *

- * We can save some space by overlapping the start of the post-IDCT table

- * with the simpler range limiting table.  The post-IDCT table begins at

- * sample_range_limit + CENTERJSAMPLE.

- *

- * Note that the table is allocated in near data space on PCs; it's small

- * enough and used often enough to justify this.

- */

-

-LOCAL void

-prepare_range_limit_table (j_decompress_ptr cinfo)

-/* Allocate and fill in the sample_range_limit table */

-{

-  JSAMPLE * table;

-  int i;

-

-  table = (JSAMPLE *)

-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-		(5 * (MAXJSAMPLE+1) + CENTERJSAMPLE) * SIZEOF(JSAMPLE));

-  table += (MAXJSAMPLE+1);	/* allow negative subscripts of simple table */

-  cinfo->sample_range_limit = table;

-  /* First segment of "simple" table: limit[x] = 0 for x < 0 */

-  MEMZERO(table - (MAXJSAMPLE+1), (MAXJSAMPLE+1) * SIZEOF(JSAMPLE));

-  /* Main part of "simple" table: limit[x] = x */

-  for (i = 0; i <= MAXJSAMPLE; i++)

-    table[i] = (JSAMPLE) i;

-  table += CENTERJSAMPLE;	/* Point to where post-IDCT table starts */

-  /* End of simple table, rest of first half of post-IDCT table */

-  for (i = CENTERJSAMPLE; i < 2*(MAXJSAMPLE+1); i++)

-    table[i] = MAXJSAMPLE;

-  /* Second half of post-IDCT table */

-  MEMZERO(table + (2 * (MAXJSAMPLE+1)),

-	  (2 * (MAXJSAMPLE+1) - CENTERJSAMPLE) * SIZEOF(JSAMPLE));

-  MEMCOPY(table + (4 * (MAXJSAMPLE+1) - CENTERJSAMPLE),

-	  cinfo->sample_range_limit, CENTERJSAMPLE * SIZEOF(JSAMPLE));

-}

-

-

-/*

- * Master selection of decompression modules.

- * This is done once at jpeg_start_decompress time.  We determine

- * which modules will be used and give them appropriate initialization calls.

- * We also initialize the decompressor input side to begin consuming data.

- *

- * Since jpeg_read_header has finished, we know what is in the SOF

- * and (first) SOS markers.  We also have all the application parameter

- * settings.

- */

-

-LOCAL void

-master_selection (j_decompress_ptr cinfo)

-{

-  my_master_ptr master = (my_master_ptr) cinfo->master;

-  boolean use_c_buffer;

-  long samplesperrow;

-  JDIMENSION jd_samplesperrow;

-

-  /* Initialize dimensions and other stuff */

-  jpeg_calc_output_dimensions(cinfo);

-  prepare_range_limit_table(cinfo);

-

-  /* Width of an output scanline must be representable as JDIMENSION. */

-  samplesperrow = (long) cinfo->output_width * (long) cinfo->out_color_components;

-  jd_samplesperrow = (JDIMENSION) samplesperrow;

-  if ((long) jd_samplesperrow != samplesperrow)

-    ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);

-

-  /* Initialize my private state */

-  master->pass_number = 0;

-  master->using_merged_upsample = use_merged_upsample(cinfo);

-

-  /* Color quantizer selection */

-  master->quantizer_1pass = NULL;

-  master->quantizer_2pass = NULL;

-  /* No mode changes if not using buffered-image mode. */

-  if (! cinfo->quantize_colors || ! cinfo->buffered_image) {

-    cinfo->enable_1pass_quant = FALSE;

-    cinfo->enable_external_quant = FALSE;

-    cinfo->enable_2pass_quant = FALSE;

-  }

-  if (cinfo->quantize_colors) {

-    if (cinfo->raw_data_out)

-      ERREXIT(cinfo, JERR_NOTIMPL);

-    /* 2-pass quantizer only works in 3-component color space. */

-    if (cinfo->out_color_components != 3) {

-      cinfo->enable_1pass_quant = TRUE;

-      cinfo->enable_external_quant = FALSE;

-      cinfo->enable_2pass_quant = FALSE;

-      cinfo->colormap = NULL;

-    } else if (cinfo->colormap != NULL) {

-      cinfo->enable_external_quant = TRUE;

-    } else if (cinfo->two_pass_quantize) {

-      cinfo->enable_2pass_quant = TRUE;

-    } else {

-      cinfo->enable_1pass_quant = TRUE;

-    }

-

-    if (cinfo->enable_1pass_quant) {

-#ifdef QUANT_1PASS_SUPPORTED

-      jinit_1pass_quantizer(cinfo);

-      master->quantizer_1pass = cinfo->cquantize;

-#else

-      ERREXIT(cinfo, JERR_NOT_COMPILED);

-#endif

-    }

-

-    /* We use the 2-pass code to map to external colormaps. */

-    if (cinfo->enable_2pass_quant || cinfo->enable_external_quant) {

-#ifdef QUANT_2PASS_SUPPORTED

-      jinit_2pass_quantizer(cinfo);

-      master->quantizer_2pass = cinfo->cquantize;

-#else

-      ERREXIT(cinfo, JERR_NOT_COMPILED);

-#endif

-    }

-    /* If both quantizers are initialized, the 2-pass one is left active;

-     * this is necessary for starting with quantization to an external map.

-     */

-  }

-

-  /* Post-processing: in particular, color conversion first */

-  if (! cinfo->raw_data_out) {

-    if (master->using_merged_upsample) {

-#ifdef UPSAMPLE_MERGING_SUPPORTED

-      jinit_merged_upsampler(cinfo); /* does color conversion too */

-#else

-      ERREXIT(cinfo, JERR_NOT_COMPILED);

-#endif

-    } else {

-      jinit_color_deconverter(cinfo);

-      jinit_upsampler(cinfo);

-    }

-    jinit_d_post_controller(cinfo, cinfo->enable_2pass_quant);

-  }

-  /* Inverse DCT */

-  jinit_inverse_dct(cinfo);

-  /* Entropy decoding: either Huffman or arithmetic coding. */

-  if (cinfo->arith_code) {

-    ERREXIT(cinfo, JERR_ARITH_NOTIMPL);

-  } else {

-    if (cinfo->progressive_mode) {

-#ifdef D_PROGRESSIVE_SUPPORTED

-      jinit_phuff_decoder(cinfo);

-#else

-      ERREXIT(cinfo, JERR_NOT_COMPILED);

-#endif

-    } else

-      jinit_huff_decoder(cinfo);

-  }

-

-  /* Initialize principal buffer controllers. */

-  use_c_buffer = cinfo->inputctl->has_multiple_scans || cinfo->buffered_image;

-  jinit_d_coef_controller(cinfo, use_c_buffer);

-

-  if (! cinfo->raw_data_out)

-    jinit_d_main_controller(cinfo, FALSE /* never need full buffer here */);

-

-  /* We can now tell the memory manager to allocate virtual arrays. */

-  (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);

-

-  /* Initialize input side of decompressor to consume first scan. */

-  (*cinfo->inputctl->start_input_pass) (cinfo);

-

-#ifdef D_MULTISCAN_FILES_SUPPORTED

-  /* If jpeg_start_decompress will read the whole file, initialize

-   * progress monitoring appropriately.  The input step is counted

-   * as one pass.

-   */

-  if (cinfo->progress != NULL && ! cinfo->buffered_image &&

-      cinfo->inputctl->has_multiple_scans) {

-    int nscans;

-    /* Estimate number of scans to set pass_limit. */

-    if (cinfo->progressive_mode) {

-      /* Arbitrarily estimate 2 interleaved DC scans + 3 AC scans/component. */

-      nscans = 2 + 3 * cinfo->num_components;

-    } else {

-      /* For a nonprogressive multiscan file, estimate 1 scan per component. */

-      nscans = cinfo->num_components;

-    }

-    cinfo->progress->pass_counter = 0L;

-    cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows * nscans;

-    cinfo->progress->completed_passes = 0;

-    cinfo->progress->total_passes = (cinfo->enable_2pass_quant ? 3 : 2);

-    /* Count the input pass as done */

-    master->pass_number++;

-  }

-#endif /* D_MULTISCAN_FILES_SUPPORTED */

-}

-

-

-/*

- * Per-pass setup.

- * This is called at the beginning of each output pass.  We determine which

- * modules will be active during this pass and give them appropriate

- * start_pass calls.  We also set is_dummy_pass to indicate whether this

- * is a "real" output pass or a dummy pass for color quantization.

- * (In the latter case, jdapi.c will crank the pass to completion.)

- */

-

-METHODDEF void

-prepare_for_output_pass (j_decompress_ptr cinfo)

-{

-  my_master_ptr master = (my_master_ptr) cinfo->master;

-

-  if (master->pub.is_dummy_pass) {

-#ifdef QUANT_2PASS_SUPPORTED

-    /* Final pass of 2-pass quantization */

-    master->pub.is_dummy_pass = FALSE;

-    (*cinfo->cquantize->start_pass) (cinfo, FALSE);

-    (*cinfo->post->start_pass) (cinfo, JBUF_CRANK_DEST);

-    (*cinfo->main->start_pass) (cinfo, JBUF_CRANK_DEST);

-#else

-    ERREXIT(cinfo, JERR_NOT_COMPILED);

-#endif /* QUANT_2PASS_SUPPORTED */

-  } else {

-    if (cinfo->quantize_colors && cinfo->colormap == NULL) {

-      /* Select new quantization method */

-      if (cinfo->two_pass_quantize && cinfo->enable_2pass_quant) {

-	cinfo->cquantize = master->quantizer_2pass;

-	master->pub.is_dummy_pass = TRUE;

-      } else if (cinfo->enable_1pass_quant) {

-	cinfo->cquantize = master->quantizer_1pass;

-      } else {

-	ERREXIT(cinfo, JERR_MODE_CHANGE);

-      }

-    }

-    (*cinfo->idct->start_pass) (cinfo);

-    (*cinfo->coef->start_output_pass) (cinfo);

-    if (! cinfo->raw_data_out) {

-      if (! master->using_merged_upsample)

-	(*cinfo->cconvert->start_pass) (cinfo);

-      (*cinfo->upsample->start_pass) (cinfo);

-      if (cinfo->quantize_colors)

-	(*cinfo->cquantize->start_pass) (cinfo, master->pub.is_dummy_pass);

-      (*cinfo->post->start_pass) (cinfo,

-	    (master->pub.is_dummy_pass ? JBUF_SAVE_AND_PASS : JBUF_PASS_THRU));

-      (*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU);

-    }

-  }

-

-  /* Set up progress monitor's pass info if present */

-  if (cinfo->progress != NULL) {

-    cinfo->progress->completed_passes = master->pass_number;

-    cinfo->progress->total_passes = master->pass_number +

-				    (master->pub.is_dummy_pass ? 2 : 1);

-    /* In buffered-image mode, we assume one more output pass if EOI not

-     * yet reached, but no more passes if EOI has been reached.

-     */

-    if (cinfo->buffered_image && ! cinfo->inputctl->eoi_reached) {

-      cinfo->progress->total_passes += (cinfo->enable_2pass_quant ? 2 : 1);

-    }

-  }

-}

-

-

-/*

- * Finish up at end of an output pass.

- */

-

-METHODDEF void

-finish_output_pass (j_decompress_ptr cinfo)

-{

-  my_master_ptr master = (my_master_ptr) cinfo->master;

-

-  if (cinfo->quantize_colors)

-    (*cinfo->cquantize->finish_pass) (cinfo);

-  master->pass_number++;

-}

-

-

-#ifdef D_MULTISCAN_FILES_SUPPORTED

-

-/*

- * Switch to a new external colormap between output passes.

- */

-

-GLOBAL void

-jpeg_new_colormap (j_decompress_ptr cinfo)

-{

-  my_master_ptr master = (my_master_ptr) cinfo->master;

-

-  /* Prevent application from calling me at wrong times */

-  if (cinfo->global_state != DSTATE_BUFIMAGE)

-    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);

-

-  if (cinfo->quantize_colors && cinfo->enable_external_quant &&

-      cinfo->colormap != NULL) {

-    /* Select 2-pass quantizer for external colormap use */

-    cinfo->cquantize = master->quantizer_2pass;

-    /* Notify quantizer of colormap change */

-    (*cinfo->cquantize->new_color_map) (cinfo);

-    master->pub.is_dummy_pass = FALSE; /* just in case */

-  } else

-    ERREXIT(cinfo, JERR_MODE_CHANGE);

-}

-

-#endif /* D_MULTISCAN_FILES_SUPPORTED */

-

-

-/*

- * Initialize master decompression control and select active modules.

- * This is performed at the start of jpeg_start_decompress.

- */

-

-GLOBAL void

-jinit_master_decompress (j_decompress_ptr cinfo)

-{

-  my_master_ptr master;

-

-  master = (my_master_ptr)

-      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				  SIZEOF(my_decomp_master));

-  cinfo->master = (struct jpeg_decomp_master *) master;

-  master->pub.prepare_for_output_pass = prepare_for_output_pass;

-  master->pub.finish_output_pass = finish_output_pass;

-

-  master->pub.is_dummy_pass = FALSE;

-

-  master_selection(cinfo);

-}

+/*
+ * jdmaster.c
+ *
+ * Copyright (C) 1991-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains master control logic for the JPEG decompressor.
+ * These routines are concerned with selecting the modules to be executed
+ * and with determining the number of passes and the work to be done in each
+ * pass.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+
+
+/* Private state */
+
+typedef struct {
+  struct jpeg_decomp_master pub; /* public fields */
+
+  int pass_number;		/* # of passes completed */
+
+  boolean using_merged_upsample; /* TRUE if using merged upsample/cconvert */
+
+  /* Saved references to initialized quantizer modules,
+   * in case we need to switch modes.
+   */
+  struct jpeg_color_quantizer * quantizer_1pass;
+  struct jpeg_color_quantizer * quantizer_2pass;
+} my_decomp_master;
+
+typedef my_decomp_master * my_master_ptr;
+
+
+/*
+ * Determine whether merged upsample/color conversion should be used.
+ * CRUCIAL: this must match the actual capabilities of jdmerge.c!
+ */
+
+LOCAL boolean
+use_merged_upsample (j_decompress_ptr cinfo)
+{
+#ifdef UPSAMPLE_MERGING_SUPPORTED
+  /* Merging is the equivalent of plain box-filter upsampling */
+  if (cinfo->do_fancy_upsampling || cinfo->CCIR601_sampling)
+    return FALSE;
+  /* jdmerge.c only supports YCC=>RGB color conversion */
+  if (cinfo->jpeg_color_space != JCS_YCbCr || cinfo->num_components != 3 ||
+      cinfo->out_color_space != JCS_RGB ||
+      cinfo->out_color_components != RGB_PIXELSIZE)
+    return FALSE;
+  /* and it only handles 2h1v or 2h2v sampling ratios */
+  if (cinfo->comp_info[0].h_samp_factor != 2 ||
+      cinfo->comp_info[1].h_samp_factor != 1 ||
+      cinfo->comp_info[2].h_samp_factor != 1 ||
+      cinfo->comp_info[0].v_samp_factor >  2 ||
+      cinfo->comp_info[1].v_samp_factor != 1 ||
+      cinfo->comp_info[2].v_samp_factor != 1)
+    return FALSE;
+  /* furthermore, it doesn't work if we've scaled the IDCTs differently */
+  if (cinfo->comp_info[0].DCT_scaled_size != cinfo->min_DCT_scaled_size ||
+      cinfo->comp_info[1].DCT_scaled_size != cinfo->min_DCT_scaled_size ||
+      cinfo->comp_info[2].DCT_scaled_size != cinfo->min_DCT_scaled_size)
+    return FALSE;
+  /* ??? also need to test for upsample-time rescaling, when & if supported */
+  return TRUE;			/* by golly, it'll work... */
+#else
+  return FALSE;
+#endif
+}
+
+
+/*
+ * Compute output image dimensions and related values.
+ * NOTE: this is exported for possible use by application.
+ * Hence it mustn't do anything that can't be done twice.
+ * Also note that it may be called before the master module is initialized!
+ */
+
+GLOBAL void
+jpeg_calc_output_dimensions (j_decompress_ptr cinfo)
+/* Do computations that are needed before master selection phase */
+{
+#if 0	// JDC: commented out to remove warning
+  int ci;
+  jpeg_component_info *compptr;
+#endif
+
+  /* Prevent application from calling me at wrong times */
+  if (cinfo->global_state != DSTATE_READY)
+    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
+
+#ifdef IDCT_SCALING_SUPPORTED
+
+  /* Compute actual output image dimensions and DCT scaling choices. */
+  if (cinfo->scale_num * 8 <= cinfo->scale_denom) {
+    /* Provide 1/8 scaling */
+    cinfo->output_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width, 8L);
+    cinfo->output_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height, 8L);
+    cinfo->min_DCT_scaled_size = 1;
+  } else if (cinfo->scale_num * 4 <= cinfo->scale_denom) {
+    /* Provide 1/4 scaling */
+    cinfo->output_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width, 4L);
+    cinfo->output_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height, 4L);
+    cinfo->min_DCT_scaled_size = 2;
+  } else if (cinfo->scale_num * 2 <= cinfo->scale_denom) {
+    /* Provide 1/2 scaling */
+    cinfo->output_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width, 2L);
+    cinfo->output_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height, 2L);
+    cinfo->min_DCT_scaled_size = 4;
+  } else {
+    /* Provide 1/1 scaling */
+    cinfo->output_width = cinfo->image_width;
+    cinfo->output_height = cinfo->image_height;
+    cinfo->min_DCT_scaled_size = DCTSIZE;
+  }
+  /* In selecting the actual DCT scaling for each component, we try to
+   * scale up the chroma components via IDCT scaling rather than upsampling.
+   * This saves time if the upsampler gets to use 1:1 scaling.
+   * Note this code assumes that the supported DCT scalings are powers of 2.
+   */
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    int ssize = cinfo->min_DCT_scaled_size;
+    while (ssize < DCTSIZE &&
+	   (compptr->h_samp_factor * ssize * 2 <=
+	    cinfo->max_h_samp_factor * cinfo->min_DCT_scaled_size) &&
+	   (compptr->v_samp_factor * ssize * 2 <=
+	    cinfo->max_v_samp_factor * cinfo->min_DCT_scaled_size)) {
+      ssize = ssize * 2;
+    }
+    compptr->DCT_scaled_size = ssize;
+  }
+
+  /* Recompute downsampled dimensions of components;
+   * application needs to know these if using raw downsampled data.
+   */
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    /* Size in samples, after IDCT scaling */
+    compptr->downsampled_width = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_width *
+		    (long) (compptr->h_samp_factor * compptr->DCT_scaled_size),
+		    (long) (cinfo->max_h_samp_factor * DCTSIZE));
+    compptr->downsampled_height = (JDIMENSION)
+      jdiv_round_up((long) cinfo->image_height *
+		    (long) (compptr->v_samp_factor * compptr->DCT_scaled_size),
+		    (long) (cinfo->max_v_samp_factor * DCTSIZE));
+  }
+
+#else /* !IDCT_SCALING_SUPPORTED */
+
+  /* Hardwire it to "no scaling" */
+  cinfo->output_width = cinfo->image_width;
+  cinfo->output_height = cinfo->image_height;
+  /* jdinput.c has already initialized DCT_scaled_size to DCTSIZE,
+   * and has computed unscaled downsampled_width and downsampled_height.
+   */
+
+#endif /* IDCT_SCALING_SUPPORTED */
+
+  /* Report number of components in selected colorspace. */
+  /* Probably this should be in the color conversion module... */
+  switch (cinfo->out_color_space) {
+  case JCS_GRAYSCALE:
+    cinfo->out_color_components = 1;
+    break;
+  case JCS_RGB:
+#if RGB_PIXELSIZE != 3
+    cinfo->out_color_components = RGB_PIXELSIZE;
+    break;
+#endif /* else share code with YCbCr */
+  case JCS_YCbCr:
+    cinfo->out_color_components = 3;
+    break;
+  case JCS_CMYK:
+  case JCS_YCCK:
+    cinfo->out_color_components = 4;
+    break;
+  default:			/* else must be same colorspace as in file */
+    cinfo->out_color_components = cinfo->num_components;
+    break;
+  }
+  cinfo->output_components = (cinfo->quantize_colors ? 1 :
+			      cinfo->out_color_components);
+
+  /* See if upsampler will want to emit more than one row at a time */
+  if (use_merged_upsample(cinfo))
+    cinfo->rec_outbuf_height = cinfo->max_v_samp_factor;
+  else
+    cinfo->rec_outbuf_height = 1;
+}
+
+
+/*
+ * Several decompression processes need to range-limit values to the range
+ * 0..MAXJSAMPLE; the input value may fall somewhat outside this range
+ * due to noise introduced by quantization, roundoff error, etc.  These
+ * processes are inner loops and need to be as fast as possible.  On most
+ * machines, particularly CPUs with pipelines or instruction prefetch,
+ * a (subscript-check-less) C table lookup
+ *		x = sample_range_limit[x];
+ * is faster than explicit tests
+ *		if (x < 0)  x = 0;
+ *		else if (x > MAXJSAMPLE)  x = MAXJSAMPLE;
+ * These processes all use a common table prepared by the routine below.
+ *
+ * For most steps we can mathematically guarantee that the initial value
+ * of x is within MAXJSAMPLE+1 of the legal range, so a table running from
+ * -(MAXJSAMPLE+1) to 2*MAXJSAMPLE+1 is sufficient.  But for the initial
+ * limiting step (just after the IDCT), a wildly out-of-range value is 
+ * possible if the input data is corrupt.  To avoid any chance of indexing
+ * off the end of memory and getting a bad-pointer trap, we perform the
+ * post-IDCT limiting thus:
+ *		x = range_limit[x & MASK];
+ * where MASK is 2 bits wider than legal sample data, ie 10 bits for 8-bit
+ * samples.  Under normal circumstances this is more than enough range and
+ * a correct output will be generated; with bogus input data the mask will
+ * cause wraparound, and we will safely generate a bogus-but-in-range output.
+ * For the post-IDCT step, we want to convert the data from signed to unsigned
+ * representation by adding CENTERJSAMPLE at the same time that we limit it.
+ * So the post-IDCT limiting table ends up looking like this:
+ *   CENTERJSAMPLE,CENTERJSAMPLE+1,...,MAXJSAMPLE,
+ *   MAXJSAMPLE (repeat 2*(MAXJSAMPLE+1)-CENTERJSAMPLE times),
+ *   0          (repeat 2*(MAXJSAMPLE+1)-CENTERJSAMPLE times),
+ *   0,1,...,CENTERJSAMPLE-1
+ * Negative inputs select values from the upper half of the table after
+ * masking.
+ *
+ * We can save some space by overlapping the start of the post-IDCT table
+ * with the simpler range limiting table.  The post-IDCT table begins at
+ * sample_range_limit + CENTERJSAMPLE.
+ *
+ * Note that the table is allocated in near data space on PCs; it's small
+ * enough and used often enough to justify this.
+ */
+
+LOCAL void
+prepare_range_limit_table (j_decompress_ptr cinfo)
+/* Allocate and fill in the sample_range_limit table */
+{
+  JSAMPLE * table;
+  int i;
+
+  table = (JSAMPLE *)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+		(5 * (MAXJSAMPLE+1) + CENTERJSAMPLE) * SIZEOF(JSAMPLE));
+  table += (MAXJSAMPLE+1);	/* allow negative subscripts of simple table */
+  cinfo->sample_range_limit = table;
+  /* First segment of "simple" table: limit[x] = 0 for x < 0 */
+  MEMZERO(table - (MAXJSAMPLE+1), (MAXJSAMPLE+1) * SIZEOF(JSAMPLE));
+  /* Main part of "simple" table: limit[x] = x */
+  for (i = 0; i <= MAXJSAMPLE; i++)
+    table[i] = (JSAMPLE) i;
+  table += CENTERJSAMPLE;	/* Point to where post-IDCT table starts */
+  /* End of simple table, rest of first half of post-IDCT table */
+  for (i = CENTERJSAMPLE; i < 2*(MAXJSAMPLE+1); i++)
+    table[i] = MAXJSAMPLE;
+  /* Second half of post-IDCT table */
+  MEMZERO(table + (2 * (MAXJSAMPLE+1)),
+	  (2 * (MAXJSAMPLE+1) - CENTERJSAMPLE) * SIZEOF(JSAMPLE));
+  MEMCOPY(table + (4 * (MAXJSAMPLE+1) - CENTERJSAMPLE),
+	  cinfo->sample_range_limit, CENTERJSAMPLE * SIZEOF(JSAMPLE));
+}
+
+
+/*
+ * Master selection of decompression modules.
+ * This is done once at jpeg_start_decompress time.  We determine
+ * which modules will be used and give them appropriate initialization calls.
+ * We also initialize the decompressor input side to begin consuming data.
+ *
+ * Since jpeg_read_header has finished, we know what is in the SOF
+ * and (first) SOS markers.  We also have all the application parameter
+ * settings.
+ */
+
+LOCAL void
+master_selection (j_decompress_ptr cinfo)
+{
+  my_master_ptr master = (my_master_ptr) cinfo->master;
+  boolean use_c_buffer;
+  long samplesperrow;
+  JDIMENSION jd_samplesperrow;
+
+  /* Initialize dimensions and other stuff */
+  jpeg_calc_output_dimensions(cinfo);
+  prepare_range_limit_table(cinfo);
+
+  /* Width of an output scanline must be representable as JDIMENSION. */
+  samplesperrow = (long) cinfo->output_width * (long) cinfo->out_color_components;
+  jd_samplesperrow = (JDIMENSION) samplesperrow;
+  if ((long) jd_samplesperrow != samplesperrow)
+    ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
+
+  /* Initialize my private state */
+  master->pass_number = 0;
+  master->using_merged_upsample = use_merged_upsample(cinfo);
+
+  /* Color quantizer selection */
+  master->quantizer_1pass = NULL;
+  master->quantizer_2pass = NULL;
+  /* No mode changes if not using buffered-image mode. */
+  if (! cinfo->quantize_colors || ! cinfo->buffered_image) {
+    cinfo->enable_1pass_quant = FALSE;
+    cinfo->enable_external_quant = FALSE;
+    cinfo->enable_2pass_quant = FALSE;
+  }
+  if (cinfo->quantize_colors) {
+    if (cinfo->raw_data_out)
+      ERREXIT(cinfo, JERR_NOTIMPL);
+    /* 2-pass quantizer only works in 3-component color space. */
+    if (cinfo->out_color_components != 3) {
+      cinfo->enable_1pass_quant = TRUE;
+      cinfo->enable_external_quant = FALSE;
+      cinfo->enable_2pass_quant = FALSE;
+      cinfo->colormap = NULL;
+    } else if (cinfo->colormap != NULL) {
+      cinfo->enable_external_quant = TRUE;
+    } else if (cinfo->two_pass_quantize) {
+      cinfo->enable_2pass_quant = TRUE;
+    } else {
+      cinfo->enable_1pass_quant = TRUE;
+    }
+
+    if (cinfo->enable_1pass_quant) {
+#ifdef QUANT_1PASS_SUPPORTED
+      jinit_1pass_quantizer(cinfo);
+      master->quantizer_1pass = cinfo->cquantize;
+#else
+      ERREXIT(cinfo, JERR_NOT_COMPILED);
+#endif
+    }
+
+    /* We use the 2-pass code to map to external colormaps. */
+    if (cinfo->enable_2pass_quant || cinfo->enable_external_quant) {
+#ifdef QUANT_2PASS_SUPPORTED
+      jinit_2pass_quantizer(cinfo);
+      master->quantizer_2pass = cinfo->cquantize;
+#else
+      ERREXIT(cinfo, JERR_NOT_COMPILED);
+#endif
+    }
+    /* If both quantizers are initialized, the 2-pass one is left active;
+     * this is necessary for starting with quantization to an external map.
+     */
+  }
+
+  /* Post-processing: in particular, color conversion first */
+  if (! cinfo->raw_data_out) {
+    if (master->using_merged_upsample) {
+#ifdef UPSAMPLE_MERGING_SUPPORTED
+      jinit_merged_upsampler(cinfo); /* does color conversion too */
+#else
+      ERREXIT(cinfo, JERR_NOT_COMPILED);
+#endif
+    } else {
+      jinit_color_deconverter(cinfo);
+      jinit_upsampler(cinfo);
+    }
+    jinit_d_post_controller(cinfo, cinfo->enable_2pass_quant);
+  }
+  /* Inverse DCT */
+  jinit_inverse_dct(cinfo);
+  /* Entropy decoding: either Huffman or arithmetic coding. */
+  if (cinfo->arith_code) {
+    ERREXIT(cinfo, JERR_ARITH_NOTIMPL);
+  } else {
+    if (cinfo->progressive_mode) {
+#ifdef D_PROGRESSIVE_SUPPORTED
+      jinit_phuff_decoder(cinfo);
+#else
+      ERREXIT(cinfo, JERR_NOT_COMPILED);
+#endif
+    } else
+      jinit_huff_decoder(cinfo);
+  }
+
+  /* Initialize principal buffer controllers. */
+  use_c_buffer = cinfo->inputctl->has_multiple_scans || cinfo->buffered_image;
+  jinit_d_coef_controller(cinfo, use_c_buffer);
+
+  if (! cinfo->raw_data_out)
+    jinit_d_main_controller(cinfo, FALSE /* never need full buffer here */);
+
+  /* We can now tell the memory manager to allocate virtual arrays. */
+  (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);
+
+  /* Initialize input side of decompressor to consume first scan. */
+  (*cinfo->inputctl->start_input_pass) (cinfo);
+
+#ifdef D_MULTISCAN_FILES_SUPPORTED
+  /* If jpeg_start_decompress will read the whole file, initialize
+   * progress monitoring appropriately.  The input step is counted
+   * as one pass.
+   */
+  if (cinfo->progress != NULL && ! cinfo->buffered_image &&
+      cinfo->inputctl->has_multiple_scans) {
+    int nscans;
+    /* Estimate number of scans to set pass_limit. */
+    if (cinfo->progressive_mode) {
+      /* Arbitrarily estimate 2 interleaved DC scans + 3 AC scans/component. */
+      nscans = 2 + 3 * cinfo->num_components;
+    } else {
+      /* For a nonprogressive multiscan file, estimate 1 scan per component. */
+      nscans = cinfo->num_components;
+    }
+    cinfo->progress->pass_counter = 0L;
+    cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows * nscans;
+    cinfo->progress->completed_passes = 0;
+    cinfo->progress->total_passes = (cinfo->enable_2pass_quant ? 3 : 2);
+    /* Count the input pass as done */
+    master->pass_number++;
+  }
+#endif /* D_MULTISCAN_FILES_SUPPORTED */
+}
+
+
+/*
+ * Per-pass setup.
+ * This is called at the beginning of each output pass.  We determine which
+ * modules will be active during this pass and give them appropriate
+ * start_pass calls.  We also set is_dummy_pass to indicate whether this
+ * is a "real" output pass or a dummy pass for color quantization.
+ * (In the latter case, jdapi.c will crank the pass to completion.)
+ */
+
+METHODDEF void
+prepare_for_output_pass (j_decompress_ptr cinfo)
+{
+  my_master_ptr master = (my_master_ptr) cinfo->master;
+
+  if (master->pub.is_dummy_pass) {
+#ifdef QUANT_2PASS_SUPPORTED
+    /* Final pass of 2-pass quantization */
+    master->pub.is_dummy_pass = FALSE;
+    (*cinfo->cquantize->start_pass) (cinfo, FALSE);
+    (*cinfo->post->start_pass) (cinfo, JBUF_CRANK_DEST);
+    (*cinfo->main->start_pass) (cinfo, JBUF_CRANK_DEST);
+#else
+    ERREXIT(cinfo, JERR_NOT_COMPILED);
+#endif /* QUANT_2PASS_SUPPORTED */
+  } else {
+    if (cinfo->quantize_colors && cinfo->colormap == NULL) {
+      /* Select new quantization method */
+      if (cinfo->two_pass_quantize && cinfo->enable_2pass_quant) {
+	cinfo->cquantize = master->quantizer_2pass;
+	master->pub.is_dummy_pass = TRUE;
+      } else if (cinfo->enable_1pass_quant) {
+	cinfo->cquantize = master->quantizer_1pass;
+      } else {
+	ERREXIT(cinfo, JERR_MODE_CHANGE);
+      }
+    }
+    (*cinfo->idct->start_pass) (cinfo);
+    (*cinfo->coef->start_output_pass) (cinfo);
+    if (! cinfo->raw_data_out) {
+      if (! master->using_merged_upsample)
+	(*cinfo->cconvert->start_pass) (cinfo);
+      (*cinfo->upsample->start_pass) (cinfo);
+      if (cinfo->quantize_colors)
+	(*cinfo->cquantize->start_pass) (cinfo, master->pub.is_dummy_pass);
+      (*cinfo->post->start_pass) (cinfo,
+	    (master->pub.is_dummy_pass ? JBUF_SAVE_AND_PASS : JBUF_PASS_THRU));
+      (*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU);
+    }
+  }
+
+  /* Set up progress monitor's pass info if present */
+  if (cinfo->progress != NULL) {
+    cinfo->progress->completed_passes = master->pass_number;
+    cinfo->progress->total_passes = master->pass_number +
+				    (master->pub.is_dummy_pass ? 2 : 1);
+    /* In buffered-image mode, we assume one more output pass if EOI not
+     * yet reached, but no more passes if EOI has been reached.
+     */
+    if (cinfo->buffered_image && ! cinfo->inputctl->eoi_reached) {
+      cinfo->progress->total_passes += (cinfo->enable_2pass_quant ? 2 : 1);
+    }
+  }
+}
+
+
+/*
+ * Finish up at end of an output pass.
+ */
+
+METHODDEF void
+finish_output_pass (j_decompress_ptr cinfo)
+{
+  my_master_ptr master = (my_master_ptr) cinfo->master;
+
+  if (cinfo->quantize_colors)
+    (*cinfo->cquantize->finish_pass) (cinfo);
+  master->pass_number++;
+}
+
+
+#ifdef D_MULTISCAN_FILES_SUPPORTED
+
+/*
+ * Switch to a new external colormap between output passes.
+ */
+
+GLOBAL void
+jpeg_new_colormap (j_decompress_ptr cinfo)
+{
+  my_master_ptr master = (my_master_ptr) cinfo->master;
+
+  /* Prevent application from calling me at wrong times */
+  if (cinfo->global_state != DSTATE_BUFIMAGE)
+    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
+
+  if (cinfo->quantize_colors && cinfo->enable_external_quant &&
+      cinfo->colormap != NULL) {
+    /* Select 2-pass quantizer for external colormap use */
+    cinfo->cquantize = master->quantizer_2pass;
+    /* Notify quantizer of colormap change */
+    (*cinfo->cquantize->new_color_map) (cinfo);
+    master->pub.is_dummy_pass = FALSE; /* just in case */
+  } else
+    ERREXIT(cinfo, JERR_MODE_CHANGE);
+}
+
+#endif /* D_MULTISCAN_FILES_SUPPORTED */
+
+
+/*
+ * Initialize master decompression control and select active modules.
+ * This is performed at the start of jpeg_start_decompress.
+ */
+
+GLOBAL void
+jinit_master_decompress (j_decompress_ptr cinfo)
+{
+  my_master_ptr master;
+
+  master = (my_master_ptr)
+      (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				  SIZEOF(my_decomp_master));
+  cinfo->master = (struct jpeg_decomp_master *) master;
+  master->pub.prepare_for_output_pass = prepare_for_output_pass;
+  master->pub.finish_output_pass = finish_output_pass;
+
+  master->pub.is_dummy_pass = FALSE;
+
+  master_selection(cinfo);
+}
diff --git a/libs/jpeg6/jdpostct.cpp b/libs/jpeg6/jdpostct.cpp
index e3283b0..f612002 100755
--- a/libs/jpeg6/jdpostct.cpp
+++ b/libs/jpeg6/jdpostct.cpp
@@ -1,290 +1,290 @@
-/*

- * jdpostct.c

- *

- * Copyright (C) 1994-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains the decompression postprocessing controller.

- * This controller manages the upsampling, color conversion, and color

- * quantization/reduction steps; specifically, it controls the buffering

- * between upsample/color conversion and color quantization/reduction.

- *

- * If no color quantization/reduction is required, then this module has no

- * work to do, and it just hands off to the upsample/color conversion code.

- * An integrated upsample/convert/quantize process would replace this module

- * entirely.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-

-

-/* Private buffer controller object */

-

-typedef struct {

-  struct jpeg_d_post_controller pub; /* public fields */

-

-  /* Color quantization source buffer: this holds output data from

-   * the upsample/color conversion step to be passed to the quantizer.

-   * For two-pass color quantization, we need a full-image buffer;

-   * for one-pass operation, a strip buffer is sufficient.

-   */

-  jvirt_sarray_ptr whole_image;	/* virtual array, or NULL if one-pass */

-  JSAMPARRAY buffer;		/* strip buffer, or current strip of virtual */

-  JDIMENSION strip_height;	/* buffer size in rows */

-  /* for two-pass mode only: */

-  JDIMENSION starting_row;	/* row # of first row in current strip */

-  JDIMENSION next_row;		/* index of next row to fill/empty in strip */

-} my_post_controller;

-

-typedef my_post_controller * my_post_ptr;

-

-

-/* Forward declarations */

-METHODDEF void post_process_1pass

-	JPP((j_decompress_ptr cinfo,

-	     JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr,

-	     JDIMENSION in_row_groups_avail,

-	     JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,

-	     JDIMENSION out_rows_avail));

-#ifdef QUANT_2PASS_SUPPORTED

-METHODDEF void post_process_prepass

-	JPP((j_decompress_ptr cinfo,

-	     JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr,

-	     JDIMENSION in_row_groups_avail,

-	     JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,

-	     JDIMENSION out_rows_avail));

-METHODDEF void post_process_2pass

-	JPP((j_decompress_ptr cinfo,

-	     JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr,

-	     JDIMENSION in_row_groups_avail,

-	     JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,

-	     JDIMENSION out_rows_avail));

-#endif

-

-

-/*

- * Initialize for a processing pass.

- */

-

-METHODDEF void

-start_pass_dpost (j_decompress_ptr cinfo, J_BUF_MODE pass_mode)

-{

-  my_post_ptr post = (my_post_ptr) cinfo->post;

-

-  switch (pass_mode) {

-  case JBUF_PASS_THRU:

-    if (cinfo->quantize_colors) {

-      /* Single-pass processing with color quantization. */

-      post->pub.post_process_data = post_process_1pass;

-      /* We could be doing buffered-image output before starting a 2-pass

-       * color quantization; in that case, jinit_d_post_controller did not

-       * allocate a strip buffer.  Use the virtual-array buffer as workspace.

-       */

-      if (post->buffer == NULL) {

-	post->buffer = (*cinfo->mem->access_virt_sarray)

-	  ((j_common_ptr) cinfo, post->whole_image,

-	   (JDIMENSION) 0, post->strip_height, TRUE);

-      }

-    } else {

-      /* For single-pass processing without color quantization,

-       * I have no work to do; just call the upsampler directly.

-       */

-      post->pub.post_process_data = cinfo->upsample->upsample;

-    }

-    break;

-#ifdef QUANT_2PASS_SUPPORTED

-  case JBUF_SAVE_AND_PASS:

-    /* First pass of 2-pass quantization */

-    if (post->whole_image == NULL)

-      ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);

-    post->pub.post_process_data = post_process_prepass;

-    break;

-  case JBUF_CRANK_DEST:

-    /* Second pass of 2-pass quantization */

-    if (post->whole_image == NULL)

-      ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);

-    post->pub.post_process_data = post_process_2pass;

-    break;

-#endif /* QUANT_2PASS_SUPPORTED */

-  default:

-    ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);

-    break;

-  }

-  post->starting_row = post->next_row = 0;

-}

-

-

-/*

- * Process some data in the one-pass (strip buffer) case.

- * This is used for color precision reduction as well as one-pass quantization.

- */

-

-METHODDEF void

-post_process_1pass (j_decompress_ptr cinfo,

-		    JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr,

-		    JDIMENSION in_row_groups_avail,

-		    JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,

-		    JDIMENSION out_rows_avail)

-{

-  my_post_ptr post = (my_post_ptr) cinfo->post;

-  JDIMENSION num_rows, max_rows;

-

-  /* Fill the buffer, but not more than what we can dump out in one go. */

-  /* Note we rely on the upsampler to detect bottom of image. */

-  max_rows = out_rows_avail - *out_row_ctr;

-  if (max_rows > post->strip_height)

-    max_rows = post->strip_height;

-  num_rows = 0;

-  (*cinfo->upsample->upsample) (cinfo,

-		input_buf, in_row_group_ctr, in_row_groups_avail,

-		post->buffer, &num_rows, max_rows);

-  /* Quantize and emit data. */

-  (*cinfo->cquantize->color_quantize) (cinfo,

-		post->buffer, output_buf + *out_row_ctr, (int) num_rows);

-  *out_row_ctr += num_rows;

-}

-

-

-#ifdef QUANT_2PASS_SUPPORTED

-

-/*

- * Process some data in the first pass of 2-pass quantization.

- */

-

-METHODDEF void

-post_process_prepass (j_decompress_ptr cinfo,

-		      JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr,

-		      JDIMENSION in_row_groups_avail,

-		      JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,

-		      JDIMENSION out_rows_avail)

-{

-  my_post_ptr post = (my_post_ptr) cinfo->post;

-  JDIMENSION old_next_row, num_rows;

-

-  /* Reposition virtual buffer if at start of strip. */

-  if (post->next_row == 0) {

-    post->buffer = (*cinfo->mem->access_virt_sarray)

-	((j_common_ptr) cinfo, post->whole_image,

-	 post->starting_row, post->strip_height, TRUE);

-  }

-

-  /* Upsample some data (up to a strip height's worth). */

-  old_next_row = post->next_row;

-  (*cinfo->upsample->upsample) (cinfo,

-		input_buf, in_row_group_ctr, in_row_groups_avail,

-		post->buffer, &post->next_row, post->strip_height);

-

-  /* Allow quantizer to scan new data.  No data is emitted, */

-  /* but we advance out_row_ctr so outer loop can tell when we're done. */

-  if (post->next_row > old_next_row) {

-    num_rows = post->next_row - old_next_row;

-    (*cinfo->cquantize->color_quantize) (cinfo, post->buffer + old_next_row,

-					 (JSAMPARRAY) NULL, (int) num_rows);

-    *out_row_ctr += num_rows;

-  }

-

-  /* Advance if we filled the strip. */

-  if (post->next_row >= post->strip_height) {

-    post->starting_row += post->strip_height;

-    post->next_row = 0;

-  }

-}

-

-

-/*

- * Process some data in the second pass of 2-pass quantization.

- */

-

-METHODDEF void

-post_process_2pass (j_decompress_ptr cinfo,

-		    JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr,

-		    JDIMENSION in_row_groups_avail,

-		    JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,

-		    JDIMENSION out_rows_avail)

-{

-  my_post_ptr post = (my_post_ptr) cinfo->post;

-  JDIMENSION num_rows, max_rows;

-

-  /* Reposition virtual buffer if at start of strip. */

-  if (post->next_row == 0) {

-    post->buffer = (*cinfo->mem->access_virt_sarray)

-	((j_common_ptr) cinfo, post->whole_image,

-	 post->starting_row, post->strip_height, FALSE);

-  }

-

-  /* Determine number of rows to emit. */

-  num_rows = post->strip_height - post->next_row; /* available in strip */

-  max_rows = out_rows_avail - *out_row_ctr; /* available in output area */

-  if (num_rows > max_rows)

-    num_rows = max_rows;

-  /* We have to check bottom of image here, can't depend on upsampler. */

-  max_rows = cinfo->output_height - post->starting_row;

-  if (num_rows > max_rows)

-    num_rows = max_rows;

-

-  /* Quantize and emit data. */

-  (*cinfo->cquantize->color_quantize) (cinfo,

-		post->buffer + post->next_row, output_buf + *out_row_ctr,

-		(int) num_rows);

-  *out_row_ctr += num_rows;

-

-  /* Advance if we filled the strip. */

-  post->next_row += num_rows;

-  if (post->next_row >= post->strip_height) {

-    post->starting_row += post->strip_height;

-    post->next_row = 0;

-  }

-}

-

-#endif /* QUANT_2PASS_SUPPORTED */

-

-

-/*

- * Initialize postprocessing controller.

- */

-

-GLOBAL void

-jinit_d_post_controller (j_decompress_ptr cinfo, boolean need_full_buffer)

-{

-  my_post_ptr post;

-

-  post = (my_post_ptr)

-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				SIZEOF(my_post_controller));

-  cinfo->post = (struct jpeg_d_post_controller *) post;

-  post->pub.start_pass = start_pass_dpost;

-  post->whole_image = NULL;	/* flag for no virtual arrays */

-  post->buffer = NULL;		/* flag for no strip buffer */

-

-  /* Create the quantization buffer, if needed */

-  if (cinfo->quantize_colors) {

-    /* The buffer strip height is max_v_samp_factor, which is typically

-     * an efficient number of rows for upsampling to return.

-     * (In the presence of output rescaling, we might want to be smarter?)

-     */

-    post->strip_height = (JDIMENSION) cinfo->max_v_samp_factor;

-    if (need_full_buffer) {

-      /* Two-pass color quantization: need full-image storage. */

-      /* We round up the number of rows to a multiple of the strip height. */

-#ifdef QUANT_2PASS_SUPPORTED

-      post->whole_image = (*cinfo->mem->request_virt_sarray)

-	((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,

-	 cinfo->output_width * cinfo->out_color_components,

-	 (JDIMENSION) jround_up((long) cinfo->output_height,

-				(long) post->strip_height),

-	 post->strip_height);

-#else

-      ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);

-#endif /* QUANT_2PASS_SUPPORTED */

-    } else {

-      /* One-pass color quantization: just make a strip buffer. */

-      post->buffer = (*cinfo->mem->alloc_sarray)

-	((j_common_ptr) cinfo, JPOOL_IMAGE,

-	 cinfo->output_width * cinfo->out_color_components,

-	 post->strip_height);

-    }

-  }

-}

+/*
+ * jdpostct.c
+ *
+ * Copyright (C) 1994-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains the decompression postprocessing controller.
+ * This controller manages the upsampling, color conversion, and color
+ * quantization/reduction steps; specifically, it controls the buffering
+ * between upsample/color conversion and color quantization/reduction.
+ *
+ * If no color quantization/reduction is required, then this module has no
+ * work to do, and it just hands off to the upsample/color conversion code.
+ * An integrated upsample/convert/quantize process would replace this module
+ * entirely.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+
+
+/* Private buffer controller object */
+
+typedef struct {
+  struct jpeg_d_post_controller pub; /* public fields */
+
+  /* Color quantization source buffer: this holds output data from
+   * the upsample/color conversion step to be passed to the quantizer.
+   * For two-pass color quantization, we need a full-image buffer;
+   * for one-pass operation, a strip buffer is sufficient.
+   */
+  jvirt_sarray_ptr whole_image;	/* virtual array, or NULL if one-pass */
+  JSAMPARRAY buffer;		/* strip buffer, or current strip of virtual */
+  JDIMENSION strip_height;	/* buffer size in rows */
+  /* for two-pass mode only: */
+  JDIMENSION starting_row;	/* row # of first row in current strip */
+  JDIMENSION next_row;		/* index of next row to fill/empty in strip */
+} my_post_controller;
+
+typedef my_post_controller * my_post_ptr;
+
+
+/* Forward declarations */
+METHODDEF void post_process_1pass
+	JPP((j_decompress_ptr cinfo,
+	     JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr,
+	     JDIMENSION in_row_groups_avail,
+	     JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
+	     JDIMENSION out_rows_avail));
+#ifdef QUANT_2PASS_SUPPORTED
+METHODDEF void post_process_prepass
+	JPP((j_decompress_ptr cinfo,
+	     JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr,
+	     JDIMENSION in_row_groups_avail,
+	     JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
+	     JDIMENSION out_rows_avail));
+METHODDEF void post_process_2pass
+	JPP((j_decompress_ptr cinfo,
+	     JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr,
+	     JDIMENSION in_row_groups_avail,
+	     JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
+	     JDIMENSION out_rows_avail));
+#endif
+
+
+/*
+ * Initialize for a processing pass.
+ */
+
+METHODDEF void
+start_pass_dpost (j_decompress_ptr cinfo, J_BUF_MODE pass_mode)
+{
+  my_post_ptr post = (my_post_ptr) cinfo->post;
+
+  switch (pass_mode) {
+  case JBUF_PASS_THRU:
+    if (cinfo->quantize_colors) {
+      /* Single-pass processing with color quantization. */
+      post->pub.post_process_data = post_process_1pass;
+      /* We could be doing buffered-image output before starting a 2-pass
+       * color quantization; in that case, jinit_d_post_controller did not
+       * allocate a strip buffer.  Use the virtual-array buffer as workspace.
+       */
+      if (post->buffer == NULL) {
+	post->buffer = (*cinfo->mem->access_virt_sarray)
+	  ((j_common_ptr) cinfo, post->whole_image,
+	   (JDIMENSION) 0, post->strip_height, TRUE);
+      }
+    } else {
+      /* For single-pass processing without color quantization,
+       * I have no work to do; just call the upsampler directly.
+       */
+      post->pub.post_process_data = cinfo->upsample->upsample;
+    }
+    break;
+#ifdef QUANT_2PASS_SUPPORTED
+  case JBUF_SAVE_AND_PASS:
+    /* First pass of 2-pass quantization */
+    if (post->whole_image == NULL)
+      ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
+    post->pub.post_process_data = post_process_prepass;
+    break;
+  case JBUF_CRANK_DEST:
+    /* Second pass of 2-pass quantization */
+    if (post->whole_image == NULL)
+      ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
+    post->pub.post_process_data = post_process_2pass;
+    break;
+#endif /* QUANT_2PASS_SUPPORTED */
+  default:
+    ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
+    break;
+  }
+  post->starting_row = post->next_row = 0;
+}
+
+
+/*
+ * Process some data in the one-pass (strip buffer) case.
+ * This is used for color precision reduction as well as one-pass quantization.
+ */
+
+METHODDEF void
+post_process_1pass (j_decompress_ptr cinfo,
+		    JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr,
+		    JDIMENSION in_row_groups_avail,
+		    JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
+		    JDIMENSION out_rows_avail)
+{
+  my_post_ptr post = (my_post_ptr) cinfo->post;
+  JDIMENSION num_rows, max_rows;
+
+  /* Fill the buffer, but not more than what we can dump out in one go. */
+  /* Note we rely on the upsampler to detect bottom of image. */
+  max_rows = out_rows_avail - *out_row_ctr;
+  if (max_rows > post->strip_height)
+    max_rows = post->strip_height;
+  num_rows = 0;
+  (*cinfo->upsample->upsample) (cinfo,
+		input_buf, in_row_group_ctr, in_row_groups_avail,
+		post->buffer, &num_rows, max_rows);
+  /* Quantize and emit data. */
+  (*cinfo->cquantize->color_quantize) (cinfo,
+		post->buffer, output_buf + *out_row_ctr, (int) num_rows);
+  *out_row_ctr += num_rows;
+}
+
+
+#ifdef QUANT_2PASS_SUPPORTED
+
+/*
+ * Process some data in the first pass of 2-pass quantization.
+ */
+
+METHODDEF void
+post_process_prepass (j_decompress_ptr cinfo,
+		      JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr,
+		      JDIMENSION in_row_groups_avail,
+		      JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
+		      JDIMENSION out_rows_avail)
+{
+  my_post_ptr post = (my_post_ptr) cinfo->post;
+  JDIMENSION old_next_row, num_rows;
+
+  /* Reposition virtual buffer if at start of strip. */
+  if (post->next_row == 0) {
+    post->buffer = (*cinfo->mem->access_virt_sarray)
+	((j_common_ptr) cinfo, post->whole_image,
+	 post->starting_row, post->strip_height, TRUE);
+  }
+
+  /* Upsample some data (up to a strip height's worth). */
+  old_next_row = post->next_row;
+  (*cinfo->upsample->upsample) (cinfo,
+		input_buf, in_row_group_ctr, in_row_groups_avail,
+		post->buffer, &post->next_row, post->strip_height);
+
+  /* Allow quantizer to scan new data.  No data is emitted, */
+  /* but we advance out_row_ctr so outer loop can tell when we're done. */
+  if (post->next_row > old_next_row) {
+    num_rows = post->next_row - old_next_row;
+    (*cinfo->cquantize->color_quantize) (cinfo, post->buffer + old_next_row,
+					 (JSAMPARRAY) NULL, (int) num_rows);
+    *out_row_ctr += num_rows;
+  }
+
+  /* Advance if we filled the strip. */
+  if (post->next_row >= post->strip_height) {
+    post->starting_row += post->strip_height;
+    post->next_row = 0;
+  }
+}
+
+
+/*
+ * Process some data in the second pass of 2-pass quantization.
+ */
+
+METHODDEF void
+post_process_2pass (j_decompress_ptr cinfo,
+		    JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr,
+		    JDIMENSION in_row_groups_avail,
+		    JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
+		    JDIMENSION out_rows_avail)
+{
+  my_post_ptr post = (my_post_ptr) cinfo->post;
+  JDIMENSION num_rows, max_rows;
+
+  /* Reposition virtual buffer if at start of strip. */
+  if (post->next_row == 0) {
+    post->buffer = (*cinfo->mem->access_virt_sarray)
+	((j_common_ptr) cinfo, post->whole_image,
+	 post->starting_row, post->strip_height, FALSE);
+  }
+
+  /* Determine number of rows to emit. */
+  num_rows = post->strip_height - post->next_row; /* available in strip */
+  max_rows = out_rows_avail - *out_row_ctr; /* available in output area */
+  if (num_rows > max_rows)
+    num_rows = max_rows;
+  /* We have to check bottom of image here, can't depend on upsampler. */
+  max_rows = cinfo->output_height - post->starting_row;
+  if (num_rows > max_rows)
+    num_rows = max_rows;
+
+  /* Quantize and emit data. */
+  (*cinfo->cquantize->color_quantize) (cinfo,
+		post->buffer + post->next_row, output_buf + *out_row_ctr,
+		(int) num_rows);
+  *out_row_ctr += num_rows;
+
+  /* Advance if we filled the strip. */
+  post->next_row += num_rows;
+  if (post->next_row >= post->strip_height) {
+    post->starting_row += post->strip_height;
+    post->next_row = 0;
+  }
+}
+
+#endif /* QUANT_2PASS_SUPPORTED */
+
+
+/*
+ * Initialize postprocessing controller.
+ */
+
+GLOBAL void
+jinit_d_post_controller (j_decompress_ptr cinfo, boolean need_full_buffer)
+{
+  my_post_ptr post;
+
+  post = (my_post_ptr)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				SIZEOF(my_post_controller));
+  cinfo->post = (struct jpeg_d_post_controller *) post;
+  post->pub.start_pass = start_pass_dpost;
+  post->whole_image = NULL;	/* flag for no virtual arrays */
+  post->buffer = NULL;		/* flag for no strip buffer */
+
+  /* Create the quantization buffer, if needed */
+  if (cinfo->quantize_colors) {
+    /* The buffer strip height is max_v_samp_factor, which is typically
+     * an efficient number of rows for upsampling to return.
+     * (In the presence of output rescaling, we might want to be smarter?)
+     */
+    post->strip_height = (JDIMENSION) cinfo->max_v_samp_factor;
+    if (need_full_buffer) {
+      /* Two-pass color quantization: need full-image storage. */
+      /* We round up the number of rows to a multiple of the strip height. */
+#ifdef QUANT_2PASS_SUPPORTED
+      post->whole_image = (*cinfo->mem->request_virt_sarray)
+	((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
+	 cinfo->output_width * cinfo->out_color_components,
+	 (JDIMENSION) jround_up((long) cinfo->output_height,
+				(long) post->strip_height),
+	 post->strip_height);
+#else
+      ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
+#endif /* QUANT_2PASS_SUPPORTED */
+    } else {
+      /* One-pass color quantization: just make a strip buffer. */
+      post->buffer = (*cinfo->mem->alloc_sarray)
+	((j_common_ptr) cinfo, JPOOL_IMAGE,
+	 cinfo->output_width * cinfo->out_color_components,
+	 post->strip_height);
+    }
+  }
+}
diff --git a/libs/jpeg6/jdsample.cpp b/libs/jpeg6/jdsample.cpp
index bc171f4..661e198 100755
--- a/libs/jpeg6/jdsample.cpp
+++ b/libs/jpeg6/jdsample.cpp
@@ -1,478 +1,478 @@
-/*

- * jdsample.c

- *

- * Copyright (C) 1991-1994, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains upsampling routines.

- *

- * Upsampling input data is counted in "row groups".  A row group

- * is defined to be (v_samp_factor * DCT_scaled_size / min_DCT_scaled_size)

- * sample rows of each component.  Upsampling will normally produce

- * max_v_samp_factor pixel rows from each row group (but this could vary

- * if the upsampler is applying a scale factor of its own).

- *

- * An excellent reference for image resampling is

- *   Digital Image Warping, George Wolberg, 1990.

- *   Pub. by IEEE Computer Society Press, Los Alamitos, CA. ISBN 0-8186-8944-7.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-

-

-/* Pointer to routine to upsample a single component */

-typedef JMETHOD(void, upsample1_ptr,

-		(j_decompress_ptr cinfo, jpeg_component_info * compptr,

-		 JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr));

-

-/* Private subobject */

-

-typedef struct {

-  struct jpeg_upsampler pub;	/* public fields */

-

-  /* Color conversion buffer.  When using separate upsampling and color

-   * conversion steps, this buffer holds one upsampled row group until it

-   * has been color converted and output.

-   * Note: we do not allocate any storage for component(s) which are full-size,

-   * ie do not need rescaling.  The corresponding entry of color_buf[] is

-   * simply set to point to the input data array, thereby avoiding copying.

-   */

-  JSAMPARRAY color_buf[MAX_COMPONENTS];

-

-  /* Per-component upsampling method pointers */

-  upsample1_ptr methods[MAX_COMPONENTS];

-

-  int next_row_out;		/* counts rows emitted from color_buf */

-  JDIMENSION rows_to_go;	/* counts rows remaining in image */

-

-  /* Height of an input row group for each component. */

-  int rowgroup_height[MAX_COMPONENTS];

-

-  /* These arrays save pixel expansion factors so that int_expand need not

-   * recompute them each time.  They are unused for other upsampling methods.

-   */

-  UINT8 h_expand[MAX_COMPONENTS];

-  UINT8 v_expand[MAX_COMPONENTS];

-} my_upsampler;

-

-typedef my_upsampler * my_upsample_ptr;

-

-

-/*

- * Initialize for an upsampling pass.

- */

-

-METHODDEF void

-start_pass_upsample (j_decompress_ptr cinfo)

-{

-  my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;

-

-  /* Mark the conversion buffer empty */

-  upsample->next_row_out = cinfo->max_v_samp_factor;

-  /* Initialize total-height counter for detecting bottom of image */

-  upsample->rows_to_go = cinfo->output_height;

-}

-

-

-/*

- * Control routine to do upsampling (and color conversion).

- *

- * In this version we upsample each component independently.

- * We upsample one row group into the conversion buffer, then apply

- * color conversion a row at a time.

- */

-

-METHODDEF void

-sep_upsample (j_decompress_ptr cinfo,

-	      JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr,

-	      JDIMENSION in_row_groups_avail,

-	      JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,

-	      JDIMENSION out_rows_avail)

-{

-  my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;

-  int ci;

-  jpeg_component_info * compptr;

-  JDIMENSION num_rows;

-

-  /* Fill the conversion buffer, if it's empty */

-  if (upsample->next_row_out >= cinfo->max_v_samp_factor) {

-    for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-	 ci++, compptr++) {

-      /* Invoke per-component upsample method.  Notice we pass a POINTER

-       * to color_buf[ci], so that fullsize_upsample can change it.

-       */

-      (*upsample->methods[ci]) (cinfo, compptr,

-	input_buf[ci] + (*in_row_group_ctr * upsample->rowgroup_height[ci]),

-	upsample->color_buf + ci);

-    }

-    upsample->next_row_out = 0;

-  }

-

-  /* Color-convert and emit rows */

-

-  /* How many we have in the buffer: */

-  num_rows = (JDIMENSION) (cinfo->max_v_samp_factor - upsample->next_row_out);

-  /* Not more than the distance to the end of the image.  Need this test

-   * in case the image height is not a multiple of max_v_samp_factor:

-   */

-  if (num_rows > upsample->rows_to_go) 

-    num_rows = upsample->rows_to_go;

-  /* And not more than what the client can accept: */

-  out_rows_avail -= *out_row_ctr;

-  if (num_rows > out_rows_avail)

-    num_rows = out_rows_avail;

-

-  (*cinfo->cconvert->color_convert) (cinfo, upsample->color_buf,

-				     (JDIMENSION) upsample->next_row_out,

-				     output_buf + *out_row_ctr,

-				     (int) num_rows);

-

-  /* Adjust counts */

-  *out_row_ctr += num_rows;

-  upsample->rows_to_go -= num_rows;

-  upsample->next_row_out += num_rows;

-  /* When the buffer is emptied, declare this input row group consumed */

-  if (upsample->next_row_out >= cinfo->max_v_samp_factor)

-    (*in_row_group_ctr)++;

-}

-

-

-/*

- * These are the routines invoked by sep_upsample to upsample pixel values

- * of a single component.  One row group is processed per call.

- */

-

-

-/*

- * For full-size components, we just make color_buf[ci] point at the

- * input buffer, and thus avoid copying any data.  Note that this is

- * safe only because sep_upsample doesn't declare the input row group

- * "consumed" until we are done color converting and emitting it.

- */

-

-METHODDEF void

-fullsize_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,

-		   JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)

-{

-  *output_data_ptr = input_data;

-}

-

-

-/*

- * This is a no-op version used for "uninteresting" components.

- * These components will not be referenced by color conversion.

- */

-

-METHODDEF void

-noop_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,

-	       JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)

-{

-  *output_data_ptr = NULL;	/* safety check */

-}

-

-

-/*

- * This version handles any integral sampling ratios.

- * This is not used for typical JPEG files, so it need not be fast.

- * Nor, for that matter, is it particularly accurate: the algorithm is

- * simple replication of the input pixel onto the corresponding output

- * pixels.  The hi-falutin sampling literature refers to this as a

- * "box filter".  A box filter tends to introduce visible artifacts,

- * so if you are actually going to use 3:1 or 4:1 sampling ratios

- * you would be well advised to improve this code.

- */

-

-METHODDEF void

-int_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,

-	      JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)

-{

-  my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;

-  JSAMPARRAY output_data = *output_data_ptr;

-  register JSAMPROW inptr, outptr;

-  register JSAMPLE invalue;

-  register int h;

-  JSAMPROW outend;

-  int h_expand, v_expand;

-  int inrow, outrow;

-

-  h_expand = upsample->h_expand[compptr->component_index];

-  v_expand = upsample->v_expand[compptr->component_index];

-

-  inrow = outrow = 0;

-  while (outrow < cinfo->max_v_samp_factor) {

-    /* Generate one output row with proper horizontal expansion */

-    inptr = input_data[inrow];

-    outptr = output_data[outrow];

-    outend = outptr + cinfo->output_width;

-    while (outptr < outend) {

-      invalue = *inptr++;	/* don't need GETJSAMPLE() here */

-      for (h = h_expand; h > 0; h--) {

-	*outptr++ = invalue;

-      }

-    }

-    /* Generate any additional output rows by duplicating the first one */

-    if (v_expand > 1) {

-      jcopy_sample_rows(output_data, outrow, output_data, outrow+1,

-			v_expand-1, cinfo->output_width);

-    }

-    inrow++;

-    outrow += v_expand;

-  }

-}

-

-

-/*

- * Fast processing for the common case of 2:1 horizontal and 1:1 vertical.

- * It's still a box filter.

- */

-

-METHODDEF void

-h2v1_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,

-	       JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)

-{

-  JSAMPARRAY output_data = *output_data_ptr;

-  register JSAMPROW inptr, outptr;

-  register JSAMPLE invalue;

-  JSAMPROW outend;

-  int inrow;

-

-  for (inrow = 0; inrow < cinfo->max_v_samp_factor; inrow++) {

-    inptr = input_data[inrow];

-    outptr = output_data[inrow];

-    outend = outptr + cinfo->output_width;

-    while (outptr < outend) {

-      invalue = *inptr++;	/* don't need GETJSAMPLE() here */

-      *outptr++ = invalue;

-      *outptr++ = invalue;

-    }

-  }

-}

-

-

-/*

- * Fast processing for the common case of 2:1 horizontal and 2:1 vertical.

- * It's still a box filter.

- */

-

-METHODDEF void

-h2v2_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,

-	       JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)

-{

-  JSAMPARRAY output_data = *output_data_ptr;

-  register JSAMPROW inptr, outptr;

-  register JSAMPLE invalue;

-  JSAMPROW outend;

-  int inrow, outrow;

-

-  inrow = outrow = 0;

-  while (outrow < cinfo->max_v_samp_factor) {

-    inptr = input_data[inrow];

-    outptr = output_data[outrow];

-    outend = outptr + cinfo->output_width;

-    while (outptr < outend) {

-      invalue = *inptr++;	/* don't need GETJSAMPLE() here */

-      *outptr++ = invalue;

-      *outptr++ = invalue;

-    }

-    jcopy_sample_rows(output_data, outrow, output_data, outrow+1,

-		      1, cinfo->output_width);

-    inrow++;

-    outrow += 2;

-  }

-}

-

-

-/*

- * Fancy processing for the common case of 2:1 horizontal and 1:1 vertical.

- *

- * The upsampling algorithm is linear interpolation between pixel centers,

- * also known as a "triangle filter".  This is a good compromise between

- * speed and visual quality.  The centers of the output pixels are 1/4 and 3/4

- * of the way between input pixel centers.

- *

- * A note about the "bias" calculations: when rounding fractional values to

- * integer, we do not want to always round 0.5 up to the next integer.

- * If we did that, we'd introduce a noticeable bias towards larger values.

- * Instead, this code is arranged so that 0.5 will be rounded up or down at

- * alternate pixel locations (a simple ordered dither pattern).

- */

-

-METHODDEF void

-h2v1_fancy_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,

-		     JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)

-{

-  JSAMPARRAY output_data = *output_data_ptr;

-  register JSAMPROW inptr, outptr;

-  register int invalue;

-  register JDIMENSION colctr;

-  int inrow;

-

-  for (inrow = 0; inrow < cinfo->max_v_samp_factor; inrow++) {

-    inptr = input_data[inrow];

-    outptr = output_data[inrow];

-    /* Special case for first column */

-    invalue = GETJSAMPLE(*inptr++);

-    *outptr++ = (JSAMPLE) invalue;

-    *outptr++ = (JSAMPLE) ((invalue * 3 + GETJSAMPLE(*inptr) + 2) >> 2);

-

-    for (colctr = compptr->downsampled_width - 2; colctr > 0; colctr--) {

-      /* General case: 3/4 * nearer pixel + 1/4 * further pixel */

-      invalue = GETJSAMPLE(*inptr++) * 3;

-      *outptr++ = (JSAMPLE) ((invalue + GETJSAMPLE(inptr[-2]) + 1) >> 2);

-      *outptr++ = (JSAMPLE) ((invalue + GETJSAMPLE(*inptr) + 2) >> 2);

-    }

-

-    /* Special case for last column */

-    invalue = GETJSAMPLE(*inptr);

-    *outptr++ = (JSAMPLE) ((invalue * 3 + GETJSAMPLE(inptr[-1]) + 1) >> 2);

-    *outptr++ = (JSAMPLE) invalue;

-  }

-}

-

-

-/*

- * Fancy processing for the common case of 2:1 horizontal and 2:1 vertical.

- * Again a triangle filter; see comments for h2v1 case, above.

- *

- * It is OK for us to reference the adjacent input rows because we demanded

- * context from the main buffer controller (see initialization code).

- */

-

-METHODDEF void

-h2v2_fancy_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,

-		     JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)

-{

-  JSAMPARRAY output_data = *output_data_ptr;

-  register JSAMPROW inptr0, inptr1, outptr;

-#if BITS_IN_JSAMPLE == 8

-  register int thiscolsum, lastcolsum, nextcolsum;

-#else

-  register INT32 thiscolsum, lastcolsum, nextcolsum;

-#endif

-  register JDIMENSION colctr;

-  int inrow, outrow, v;

-

-  inrow = outrow = 0;

-  while (outrow < cinfo->max_v_samp_factor) {

-    for (v = 0; v < 2; v++) {

-      /* inptr0 points to nearest input row, inptr1 points to next nearest */

-      inptr0 = input_data[inrow];

-      if (v == 0)		/* next nearest is row above */

-	inptr1 = input_data[inrow-1];

-      else			/* next nearest is row below */

-	inptr1 = input_data[inrow+1];

-      outptr = output_data[outrow++];

-

-      /* Special case for first column */

-      thiscolsum = GETJSAMPLE(*inptr0++) * 3 + GETJSAMPLE(*inptr1++);

-      nextcolsum = GETJSAMPLE(*inptr0++) * 3 + GETJSAMPLE(*inptr1++);

-      *outptr++ = (JSAMPLE) ((thiscolsum * 4 + 8) >> 4);

-      *outptr++ = (JSAMPLE) ((thiscolsum * 3 + nextcolsum + 7) >> 4);

-      lastcolsum = thiscolsum; thiscolsum = nextcolsum;

-

-      for (colctr = compptr->downsampled_width - 2; colctr > 0; colctr--) {

-	/* General case: 3/4 * nearer pixel + 1/4 * further pixel in each */

-	/* dimension, thus 9/16, 3/16, 3/16, 1/16 overall */

-	nextcolsum = GETJSAMPLE(*inptr0++) * 3 + GETJSAMPLE(*inptr1++);

-	*outptr++ = (JSAMPLE) ((thiscolsum * 3 + lastcolsum + 8) >> 4);

-	*outptr++ = (JSAMPLE) ((thiscolsum * 3 + nextcolsum + 7) >> 4);

-	lastcolsum = thiscolsum; thiscolsum = nextcolsum;

-      }

-

-      /* Special case for last column */

-      *outptr++ = (JSAMPLE) ((thiscolsum * 3 + lastcolsum + 8) >> 4);

-      *outptr++ = (JSAMPLE) ((thiscolsum * 4 + 7) >> 4);

-    }

-    inrow++;

-  }

-}

-

-

-/*

- * Module initialization routine for upsampling.

- */

-

-GLOBAL void

-jinit_upsampler (j_decompress_ptr cinfo)

-{

-  my_upsample_ptr upsample;

-  int ci;

-  jpeg_component_info * compptr;

-  boolean need_buffer, do_fancy;

-  int h_in_group, v_in_group, h_out_group, v_out_group;

-

-  upsample = (my_upsample_ptr)

-    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,

-				SIZEOF(my_upsampler));

-  cinfo->upsample = (struct jpeg_upsampler *) upsample;

-  upsample->pub.start_pass = start_pass_upsample;

-  upsample->pub.upsample = sep_upsample;

-  upsample->pub.need_context_rows = FALSE; /* until we find out differently */

-

-  if (cinfo->CCIR601_sampling)	/* this isn't supported */

-    ERREXIT(cinfo, JERR_CCIR601_NOTIMPL);

-

-  /* jdmainct.c doesn't support context rows when min_DCT_scaled_size = 1,

-   * so don't ask for it.

-   */

-  do_fancy = cinfo->do_fancy_upsampling && cinfo->min_DCT_scaled_size > 1;

-

-  /* Verify we can handle the sampling factors, select per-component methods,

-   * and create storage as needed.

-   */

-  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;

-       ci++, compptr++) {

-    /* Compute size of an "input group" after IDCT scaling.  This many samples

-     * are to be converted to max_h_samp_factor * max_v_samp_factor pixels.

-     */

-    h_in_group = (compptr->h_samp_factor * compptr->DCT_scaled_size) /

-		 cinfo->min_DCT_scaled_size;

-    v_in_group = (compptr->v_samp_factor * compptr->DCT_scaled_size) /

-		 cinfo->min_DCT_scaled_size;

-    h_out_group = cinfo->max_h_samp_factor;

-    v_out_group = cinfo->max_v_samp_factor;

-    upsample->rowgroup_height[ci] = v_in_group; /* save for use later */

-    need_buffer = TRUE;

-    if (! compptr->component_needed) {

-      /* Don't bother to upsample an uninteresting component. */

-      upsample->methods[ci] = noop_upsample;

-      need_buffer = FALSE;

-    } else if (h_in_group == h_out_group && v_in_group == v_out_group) {

-      /* Fullsize components can be processed without any work. */

-      upsample->methods[ci] = fullsize_upsample;

-      need_buffer = FALSE;

-    } else if (h_in_group * 2 == h_out_group &&

-	       v_in_group == v_out_group) {

-      /* Special cases for 2h1v upsampling */

-      if (do_fancy && compptr->downsampled_width > 2)

-	upsample->methods[ci] = h2v1_fancy_upsample;

-      else

-	upsample->methods[ci] = h2v1_upsample;

-    } else if (h_in_group * 2 == h_out_group &&

-	       v_in_group * 2 == v_out_group) {

-      /* Special cases for 2h2v upsampling */

-      if (do_fancy && compptr->downsampled_width > 2) {

-	upsample->methods[ci] = h2v2_fancy_upsample;

-	upsample->pub.need_context_rows = TRUE;

-      } else

-	upsample->methods[ci] = h2v2_upsample;

-    } else if ((h_out_group % h_in_group) == 0 &&

-	       (v_out_group % v_in_group) == 0) {

-      /* Generic integral-factors upsampling method */

-      upsample->methods[ci] = int_upsample;

-      upsample->h_expand[ci] = (UINT8) (h_out_group / h_in_group);

-      upsample->v_expand[ci] = (UINT8) (v_out_group / v_in_group);

-    } else

-      ERREXIT(cinfo, JERR_FRACT_SAMPLE_NOTIMPL);

-    if (need_buffer) {

-      upsample->color_buf[ci] = (*cinfo->mem->alloc_sarray)

-	((j_common_ptr) cinfo, JPOOL_IMAGE,

-	 (JDIMENSION) jround_up((long) cinfo->output_width,

-				(long) cinfo->max_h_samp_factor),

-	 (JDIMENSION) cinfo->max_v_samp_factor);

-    }

-  }

-}

+/*
+ * jdsample.c
+ *
+ * Copyright (C) 1991-1994, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains upsampling routines.
+ *
+ * Upsampling input data is counted in "row groups".  A row group
+ * is defined to be (v_samp_factor * DCT_scaled_size / min_DCT_scaled_size)
+ * sample rows of each component.  Upsampling will normally produce
+ * max_v_samp_factor pixel rows from each row group (but this could vary
+ * if the upsampler is applying a scale factor of its own).
+ *
+ * An excellent reference for image resampling is
+ *   Digital Image Warping, George Wolberg, 1990.
+ *   Pub. by IEEE Computer Society Press, Los Alamitos, CA. ISBN 0-8186-8944-7.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+
+
+/* Pointer to routine to upsample a single component */
+typedef JMETHOD(void, upsample1_ptr,
+		(j_decompress_ptr cinfo, jpeg_component_info * compptr,
+		 JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr));
+
+/* Private subobject */
+
+typedef struct {
+  struct jpeg_upsampler pub;	/* public fields */
+
+  /* Color conversion buffer.  When using separate upsampling and color
+   * conversion steps, this buffer holds one upsampled row group until it
+   * has been color converted and output.
+   * Note: we do not allocate any storage for component(s) which are full-size,
+   * ie do not need rescaling.  The corresponding entry of color_buf[] is
+   * simply set to point to the input data array, thereby avoiding copying.
+   */
+  JSAMPARRAY color_buf[MAX_COMPONENTS];
+
+  /* Per-component upsampling method pointers */
+  upsample1_ptr methods[MAX_COMPONENTS];
+
+  int next_row_out;		/* counts rows emitted from color_buf */
+  JDIMENSION rows_to_go;	/* counts rows remaining in image */
+
+  /* Height of an input row group for each component. */
+  int rowgroup_height[MAX_COMPONENTS];
+
+  /* These arrays save pixel expansion factors so that int_expand need not
+   * recompute them each time.  They are unused for other upsampling methods.
+   */
+  UINT8 h_expand[MAX_COMPONENTS];
+  UINT8 v_expand[MAX_COMPONENTS];
+} my_upsampler;
+
+typedef my_upsampler * my_upsample_ptr;
+
+
+/*
+ * Initialize for an upsampling pass.
+ */
+
+METHODDEF void
+start_pass_upsample (j_decompress_ptr cinfo)
+{
+  my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;
+
+  /* Mark the conversion buffer empty */
+  upsample->next_row_out = cinfo->max_v_samp_factor;
+  /* Initialize total-height counter for detecting bottom of image */
+  upsample->rows_to_go = cinfo->output_height;
+}
+
+
+/*
+ * Control routine to do upsampling (and color conversion).
+ *
+ * In this version we upsample each component independently.
+ * We upsample one row group into the conversion buffer, then apply
+ * color conversion a row at a time.
+ */
+
+METHODDEF void
+sep_upsample (j_decompress_ptr cinfo,
+	      JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr,
+	      JDIMENSION in_row_groups_avail,
+	      JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
+	      JDIMENSION out_rows_avail)
+{
+  my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;
+  int ci;
+  jpeg_component_info * compptr;
+  JDIMENSION num_rows;
+
+  /* Fill the conversion buffer, if it's empty */
+  if (upsample->next_row_out >= cinfo->max_v_samp_factor) {
+    for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+	 ci++, compptr++) {
+      /* Invoke per-component upsample method.  Notice we pass a POINTER
+       * to color_buf[ci], so that fullsize_upsample can change it.
+       */
+      (*upsample->methods[ci]) (cinfo, compptr,
+	input_buf[ci] + (*in_row_group_ctr * upsample->rowgroup_height[ci]),
+	upsample->color_buf + ci);
+    }
+    upsample->next_row_out = 0;
+  }
+
+  /* Color-convert and emit rows */
+
+  /* How many we have in the buffer: */
+  num_rows = (JDIMENSION) (cinfo->max_v_samp_factor - upsample->next_row_out);
+  /* Not more than the distance to the end of the image.  Need this test
+   * in case the image height is not a multiple of max_v_samp_factor:
+   */
+  if (num_rows > upsample->rows_to_go) 
+    num_rows = upsample->rows_to_go;
+  /* And not more than what the client can accept: */
+  out_rows_avail -= *out_row_ctr;
+  if (num_rows > out_rows_avail)
+    num_rows = out_rows_avail;
+
+  (*cinfo->cconvert->color_convert) (cinfo, upsample->color_buf,
+				     (JDIMENSION) upsample->next_row_out,
+				     output_buf + *out_row_ctr,
+				     (int) num_rows);
+
+  /* Adjust counts */
+  *out_row_ctr += num_rows;
+  upsample->rows_to_go -= num_rows;
+  upsample->next_row_out += num_rows;
+  /* When the buffer is emptied, declare this input row group consumed */
+  if (upsample->next_row_out >= cinfo->max_v_samp_factor)
+    (*in_row_group_ctr)++;
+}
+
+
+/*
+ * These are the routines invoked by sep_upsample to upsample pixel values
+ * of a single component.  One row group is processed per call.
+ */
+
+
+/*
+ * For full-size components, we just make color_buf[ci] point at the
+ * input buffer, and thus avoid copying any data.  Note that this is
+ * safe only because sep_upsample doesn't declare the input row group
+ * "consumed" until we are done color converting and emitting it.
+ */
+
+METHODDEF void
+fullsize_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,
+		   JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)
+{
+  *output_data_ptr = input_data;
+}
+
+
+/*
+ * This is a no-op version used for "uninteresting" components.
+ * These components will not be referenced by color conversion.
+ */
+
+METHODDEF void
+noop_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,
+	       JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)
+{
+  *output_data_ptr = NULL;	/* safety check */
+}
+
+
+/*
+ * This version handles any integral sampling ratios.
+ * This is not used for typical JPEG files, so it need not be fast.
+ * Nor, for that matter, is it particularly accurate: the algorithm is
+ * simple replication of the input pixel onto the corresponding output
+ * pixels.  The hi-falutin sampling literature refers to this as a
+ * "box filter".  A box filter tends to introduce visible artifacts,
+ * so if you are actually going to use 3:1 or 4:1 sampling ratios
+ * you would be well advised to improve this code.
+ */
+
+METHODDEF void
+int_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,
+	      JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)
+{
+  my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample;
+  JSAMPARRAY output_data = *output_data_ptr;
+  register JSAMPROW inptr, outptr;
+  register JSAMPLE invalue;
+  register int h;
+  JSAMPROW outend;
+  int h_expand, v_expand;
+  int inrow, outrow;
+
+  h_expand = upsample->h_expand[compptr->component_index];
+  v_expand = upsample->v_expand[compptr->component_index];
+
+  inrow = outrow = 0;
+  while (outrow < cinfo->max_v_samp_factor) {
+    /* Generate one output row with proper horizontal expansion */
+    inptr = input_data[inrow];
+    outptr = output_data[outrow];
+    outend = outptr + cinfo->output_width;
+    while (outptr < outend) {
+      invalue = *inptr++;	/* don't need GETJSAMPLE() here */
+      for (h = h_expand; h > 0; h--) {
+	*outptr++ = invalue;
+      }
+    }
+    /* Generate any additional output rows by duplicating the first one */
+    if (v_expand > 1) {
+      jcopy_sample_rows(output_data, outrow, output_data, outrow+1,
+			v_expand-1, cinfo->output_width);
+    }
+    inrow++;
+    outrow += v_expand;
+  }
+}
+
+
+/*
+ * Fast processing for the common case of 2:1 horizontal and 1:1 vertical.
+ * It's still a box filter.
+ */
+
+METHODDEF void
+h2v1_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,
+	       JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)
+{
+  JSAMPARRAY output_data = *output_data_ptr;
+  register JSAMPROW inptr, outptr;
+  register JSAMPLE invalue;
+  JSAMPROW outend;
+  int inrow;
+
+  for (inrow = 0; inrow < cinfo->max_v_samp_factor; inrow++) {
+    inptr = input_data[inrow];
+    outptr = output_data[inrow];
+    outend = outptr + cinfo->output_width;
+    while (outptr < outend) {
+      invalue = *inptr++;	/* don't need GETJSAMPLE() here */
+      *outptr++ = invalue;
+      *outptr++ = invalue;
+    }
+  }
+}
+
+
+/*
+ * Fast processing for the common case of 2:1 horizontal and 2:1 vertical.
+ * It's still a box filter.
+ */
+
+METHODDEF void
+h2v2_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,
+	       JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)
+{
+  JSAMPARRAY output_data = *output_data_ptr;
+  register JSAMPROW inptr, outptr;
+  register JSAMPLE invalue;
+  JSAMPROW outend;
+  int inrow, outrow;
+
+  inrow = outrow = 0;
+  while (outrow < cinfo->max_v_samp_factor) {
+    inptr = input_data[inrow];
+    outptr = output_data[outrow];
+    outend = outptr + cinfo->output_width;
+    while (outptr < outend) {
+      invalue = *inptr++;	/* don't need GETJSAMPLE() here */
+      *outptr++ = invalue;
+      *outptr++ = invalue;
+    }
+    jcopy_sample_rows(output_data, outrow, output_data, outrow+1,
+		      1, cinfo->output_width);
+    inrow++;
+    outrow += 2;
+  }
+}
+
+
+/*
+ * Fancy processing for the common case of 2:1 horizontal and 1:1 vertical.
+ *
+ * The upsampling algorithm is linear interpolation between pixel centers,
+ * also known as a "triangle filter".  This is a good compromise between
+ * speed and visual quality.  The centers of the output pixels are 1/4 and 3/4
+ * of the way between input pixel centers.
+ *
+ * A note about the "bias" calculations: when rounding fractional values to
+ * integer, we do not want to always round 0.5 up to the next integer.
+ * If we did that, we'd introduce a noticeable bias towards larger values.
+ * Instead, this code is arranged so that 0.5 will be rounded up or down at
+ * alternate pixel locations (a simple ordered dither pattern).
+ */
+
+METHODDEF void
+h2v1_fancy_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,
+		     JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)
+{
+  JSAMPARRAY output_data = *output_data_ptr;
+  register JSAMPROW inptr, outptr;
+  register int invalue;
+  register JDIMENSION colctr;
+  int inrow;
+
+  for (inrow = 0; inrow < cinfo->max_v_samp_factor; inrow++) {
+    inptr = input_data[inrow];
+    outptr = output_data[inrow];
+    /* Special case for first column */
+    invalue = GETJSAMPLE(*inptr++);
+    *outptr++ = (JSAMPLE) invalue;
+    *outptr++ = (JSAMPLE) ((invalue * 3 + GETJSAMPLE(*inptr) + 2) >> 2);
+
+    for (colctr = compptr->downsampled_width - 2; colctr > 0; colctr--) {
+      /* General case: 3/4 * nearer pixel + 1/4 * further pixel */
+      invalue = GETJSAMPLE(*inptr++) * 3;
+      *outptr++ = (JSAMPLE) ((invalue + GETJSAMPLE(inptr[-2]) + 1) >> 2);
+      *outptr++ = (JSAMPLE) ((invalue + GETJSAMPLE(*inptr) + 2) >> 2);
+    }
+
+    /* Special case for last column */
+    invalue = GETJSAMPLE(*inptr);
+    *outptr++ = (JSAMPLE) ((invalue * 3 + GETJSAMPLE(inptr[-1]) + 1) >> 2);
+    *outptr++ = (JSAMPLE) invalue;
+  }
+}
+
+
+/*
+ * Fancy processing for the common case of 2:1 horizontal and 2:1 vertical.
+ * Again a triangle filter; see comments for h2v1 case, above.
+ *
+ * It is OK for us to reference the adjacent input rows because we demanded
+ * context from the main buffer controller (see initialization code).
+ */
+
+METHODDEF void
+h2v2_fancy_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr,
+		     JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)
+{
+  JSAMPARRAY output_data = *output_data_ptr;
+  register JSAMPROW inptr0, inptr1, outptr;
+#if BITS_IN_JSAMPLE == 8
+  register int thiscolsum, lastcolsum, nextcolsum;
+#else
+  register INT32 thiscolsum, lastcolsum, nextcolsum;
+#endif
+  register JDIMENSION colctr;
+  int inrow, outrow, v;
+
+  inrow = outrow = 0;
+  while (outrow < cinfo->max_v_samp_factor) {
+    for (v = 0; v < 2; v++) {
+      /* inptr0 points to nearest input row, inptr1 points to next nearest */
+      inptr0 = input_data[inrow];
+      if (v == 0)		/* next nearest is row above */
+	inptr1 = input_data[inrow-1];
+      else			/* next nearest is row below */
+	inptr1 = input_data[inrow+1];
+      outptr = output_data[outrow++];
+
+      /* Special case for first column */
+      thiscolsum = GETJSAMPLE(*inptr0++) * 3 + GETJSAMPLE(*inptr1++);
+      nextcolsum = GETJSAMPLE(*inptr0++) * 3 + GETJSAMPLE(*inptr1++);
+      *outptr++ = (JSAMPLE) ((thiscolsum * 4 + 8) >> 4);
+      *outptr++ = (JSAMPLE) ((thiscolsum * 3 + nextcolsum + 7) >> 4);
+      lastcolsum = thiscolsum; thiscolsum = nextcolsum;
+
+      for (colctr = compptr->downsampled_width - 2; colctr > 0; colctr--) {
+	/* General case: 3/4 * nearer pixel + 1/4 * further pixel in each */
+	/* dimension, thus 9/16, 3/16, 3/16, 1/16 overall */
+	nextcolsum = GETJSAMPLE(*inptr0++) * 3 + GETJSAMPLE(*inptr1++);
+	*outptr++ = (JSAMPLE) ((thiscolsum * 3 + lastcolsum + 8) >> 4);
+	*outptr++ = (JSAMPLE) ((thiscolsum * 3 + nextcolsum + 7) >> 4);
+	lastcolsum = thiscolsum; thiscolsum = nextcolsum;
+      }
+
+      /* Special case for last column */
+      *outptr++ = (JSAMPLE) ((thiscolsum * 3 + lastcolsum + 8) >> 4);
+      *outptr++ = (JSAMPLE) ((thiscolsum * 4 + 7) >> 4);
+    }
+    inrow++;
+  }
+}
+
+
+/*
+ * Module initialization routine for upsampling.
+ */
+
+GLOBAL void
+jinit_upsampler (j_decompress_ptr cinfo)
+{
+  my_upsample_ptr upsample;
+  int ci;
+  jpeg_component_info * compptr;
+  boolean need_buffer, do_fancy;
+  int h_in_group, v_in_group, h_out_group, v_out_group;
+
+  upsample = (my_upsample_ptr)
+    (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+				SIZEOF(my_upsampler));
+  cinfo->upsample = (struct jpeg_upsampler *) upsample;
+  upsample->pub.start_pass = start_pass_upsample;
+  upsample->pub.upsample = sep_upsample;
+  upsample->pub.need_context_rows = FALSE; /* until we find out differently */
+
+  if (cinfo->CCIR601_sampling)	/* this isn't supported */
+    ERREXIT(cinfo, JERR_CCIR601_NOTIMPL);
+
+  /* jdmainct.c doesn't support context rows when min_DCT_scaled_size = 1,
+   * so don't ask for it.
+   */
+  do_fancy = cinfo->do_fancy_upsampling && cinfo->min_DCT_scaled_size > 1;
+
+  /* Verify we can handle the sampling factors, select per-component methods,
+   * and create storage as needed.
+   */
+  for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
+       ci++, compptr++) {
+    /* Compute size of an "input group" after IDCT scaling.  This many samples
+     * are to be converted to max_h_samp_factor * max_v_samp_factor pixels.
+     */
+    h_in_group = (compptr->h_samp_factor * compptr->DCT_scaled_size) /
+		 cinfo->min_DCT_scaled_size;
+    v_in_group = (compptr->v_samp_factor * compptr->DCT_scaled_size) /
+		 cinfo->min_DCT_scaled_size;
+    h_out_group = cinfo->max_h_samp_factor;
+    v_out_group = cinfo->max_v_samp_factor;
+    upsample->rowgroup_height[ci] = v_in_group; /* save for use later */
+    need_buffer = TRUE;
+    if (! compptr->component_needed) {
+      /* Don't bother to upsample an uninteresting component. */
+      upsample->methods[ci] = noop_upsample;
+      need_buffer = FALSE;
+    } else if (h_in_group == h_out_group && v_in_group == v_out_group) {
+      /* Fullsize components can be processed without any work. */
+      upsample->methods[ci] = fullsize_upsample;
+      need_buffer = FALSE;
+    } else if (h_in_group * 2 == h_out_group &&
+	       v_in_group == v_out_group) {
+      /* Special cases for 2h1v upsampling */
+      if (do_fancy && compptr->downsampled_width > 2)
+	upsample->methods[ci] = h2v1_fancy_upsample;
+      else
+	upsample->methods[ci] = h2v1_upsample;
+    } else if (h_in_group * 2 == h_out_group &&
+	       v_in_group * 2 == v_out_group) {
+      /* Special cases for 2h2v upsampling */
+      if (do_fancy && compptr->downsampled_width > 2) {
+	upsample->methods[ci] = h2v2_fancy_upsample;
+	upsample->pub.need_context_rows = TRUE;
+      } else
+	upsample->methods[ci] = h2v2_upsample;
+    } else if ((h_out_group % h_in_group) == 0 &&
+	       (v_out_group % v_in_group) == 0) {
+      /* Generic integral-factors upsampling method */
+      upsample->methods[ci] = int_upsample;
+      upsample->h_expand[ci] = (UINT8) (h_out_group / h_in_group);
+      upsample->v_expand[ci] = (UINT8) (v_out_group / v_in_group);
+    } else
+      ERREXIT(cinfo, JERR_FRACT_SAMPLE_NOTIMPL);
+    if (need_buffer) {
+      upsample->color_buf[ci] = (*cinfo->mem->alloc_sarray)
+	((j_common_ptr) cinfo, JPOOL_IMAGE,
+	 (JDIMENSION) jround_up((long) cinfo->output_width,
+				(long) cinfo->max_h_samp_factor),
+	 (JDIMENSION) cinfo->max_v_samp_factor);
+    }
+  }
+}
diff --git a/libs/jpeg6/jdtrans.cpp b/libs/jpeg6/jdtrans.cpp
index eb873e0..5c14adc 100755
--- a/libs/jpeg6/jdtrans.cpp
+++ b/libs/jpeg6/jdtrans.cpp
@@ -1,122 +1,122 @@
-/*

- * jdtrans.c

- *

- * Copyright (C) 1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains library routines for transcoding decompression,

- * that is, reading raw DCT coefficient arrays from an input JPEG file.

- * The routines in jdapimin.c will also be needed by a transcoder.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-

-

-/* Forward declarations */

-LOCAL void transdecode_master_selection JPP((j_decompress_ptr cinfo));

-

-

-/*

- * Read the coefficient arrays from a JPEG file.

- * jpeg_read_header must be completed before calling this.

- *

- * The entire image is read into a set of virtual coefficient-block arrays,

- * one per component.  The return value is a pointer to the array of

- * virtual-array descriptors.  These can be manipulated directly via the

- * JPEG memory manager, or handed off to jpeg_write_coefficients().

- * To release the memory occupied by the virtual arrays, call

- * jpeg_finish_decompress() when done with the data.

- *

- * Returns NULL if suspended.  This case need be checked only if

- * a suspending data source is used.

- */

-

-GLOBAL jvirt_barray_ptr *

-jpeg_read_coefficients (j_decompress_ptr cinfo)

-{

-  if (cinfo->global_state == DSTATE_READY) {

-    /* First call: initialize active modules */

-    transdecode_master_selection(cinfo);

-    cinfo->global_state = DSTATE_RDCOEFS;

-  } else if (cinfo->global_state != DSTATE_RDCOEFS)

-    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);

-  /* Absorb whole file into the coef buffer */

-  for (;;) {

-    int retcode;

-    /* Call progress monitor hook if present */

-    if (cinfo->progress != NULL)

-      (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);

-    /* Absorb some more input */

-    retcode = (*cinfo->inputctl->consume_input) (cinfo);

-    if (retcode == JPEG_SUSPENDED)

-      return NULL;

-    if (retcode == JPEG_REACHED_EOI)

-      break;

-    /* Advance progress counter if appropriate */

-    if (cinfo->progress != NULL &&

-	(retcode == JPEG_ROW_COMPLETED || retcode == JPEG_REACHED_SOS)) {

-      if (++cinfo->progress->pass_counter >= cinfo->progress->pass_limit) {

-	/* startup underestimated number of scans; ratchet up one scan */

-	cinfo->progress->pass_limit += (long) cinfo->total_iMCU_rows;

-      }

-    }

-  }

-  /* Set state so that jpeg_finish_decompress does the right thing */

-  cinfo->global_state = DSTATE_STOPPING;

-  return cinfo->coef->coef_arrays;

-}

-

-

-/*

- * Master selection of decompression modules for transcoding.

- * This substitutes for jdmaster.c's initialization of the full decompressor.

- */

-

-LOCAL void

-transdecode_master_selection (j_decompress_ptr cinfo)

-{

-  /* Entropy decoding: either Huffman or arithmetic coding. */

-  if (cinfo->arith_code) {

-    ERREXIT(cinfo, JERR_ARITH_NOTIMPL);

-  } else {

-    if (cinfo->progressive_mode) {

-#ifdef D_PROGRESSIVE_SUPPORTED

-      jinit_phuff_decoder(cinfo);

-#else

-      ERREXIT(cinfo, JERR_NOT_COMPILED);

-#endif

-    } else

-      jinit_huff_decoder(cinfo);

-  }

-

-  /* Always get a full-image coefficient buffer. */

-  jinit_d_coef_controller(cinfo, TRUE);

-

-  /* We can now tell the memory manager to allocate virtual arrays. */

-  (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);

-

-  /* Initialize input side of decompressor to consume first scan. */

-  (*cinfo->inputctl->start_input_pass) (cinfo);

-

-  /* Initialize progress monitoring. */

-  if (cinfo->progress != NULL) {

-    int nscans;

-    /* Estimate number of scans to set pass_limit. */

-    if (cinfo->progressive_mode) {

-      /* Arbitrarily estimate 2 interleaved DC scans + 3 AC scans/component. */

-      nscans = 2 + 3 * cinfo->num_components;

-    } else if (cinfo->inputctl->has_multiple_scans) {

-      /* For a nonprogressive multiscan file, estimate 1 scan per component. */

-      nscans = cinfo->num_components;

-    } else {

-      nscans = 1;

-    }

-    cinfo->progress->pass_counter = 0L;

-    cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows * nscans;

-    cinfo->progress->completed_passes = 0;

-    cinfo->progress->total_passes = 1;

-  }

-}

+/*
+ * jdtrans.c
+ *
+ * Copyright (C) 1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains library routines for transcoding decompression,
+ * that is, reading raw DCT coefficient arrays from an input JPEG file.
+ * The routines in jdapimin.c will also be needed by a transcoder.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+
+
+/* Forward declarations */
+LOCAL void transdecode_master_selection JPP((j_decompress_ptr cinfo));
+
+
+/*
+ * Read the coefficient arrays from a JPEG file.
+ * jpeg_read_header must be completed before calling this.
+ *
+ * The entire image is read into a set of virtual coefficient-block arrays,
+ * one per component.  The return value is a pointer to the array of
+ * virtual-array descriptors.  These can be manipulated directly via the
+ * JPEG memory manager, or handed off to jpeg_write_coefficients().
+ * To release the memory occupied by the virtual arrays, call
+ * jpeg_finish_decompress() when done with the data.
+ *
+ * Returns NULL if suspended.  This case need be checked only if
+ * a suspending data source is used.
+ */
+
+GLOBAL jvirt_barray_ptr *
+jpeg_read_coefficients (j_decompress_ptr cinfo)
+{
+  if (cinfo->global_state == DSTATE_READY) {
+    /* First call: initialize active modules */
+    transdecode_master_selection(cinfo);
+    cinfo->global_state = DSTATE_RDCOEFS;
+  } else if (cinfo->global_state != DSTATE_RDCOEFS)
+    ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
+  /* Absorb whole file into the coef buffer */
+  for (;;) {
+    int retcode;
+    /* Call progress monitor hook if present */
+    if (cinfo->progress != NULL)
+      (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
+    /* Absorb some more input */
+    retcode = (*cinfo->inputctl->consume_input) (cinfo);
+    if (retcode == JPEG_SUSPENDED)
+      return NULL;
+    if (retcode == JPEG_REACHED_EOI)
+      break;
+    /* Advance progress counter if appropriate */
+    if (cinfo->progress != NULL &&
+	(retcode == JPEG_ROW_COMPLETED || retcode == JPEG_REACHED_SOS)) {
+      if (++cinfo->progress->pass_counter >= cinfo->progress->pass_limit) {
+	/* startup underestimated number of scans; ratchet up one scan */
+	cinfo->progress->pass_limit += (long) cinfo->total_iMCU_rows;
+      }
+    }
+  }
+  /* Set state so that jpeg_finish_decompress does the right thing */
+  cinfo->global_state = DSTATE_STOPPING;
+  return cinfo->coef->coef_arrays;
+}
+
+
+/*
+ * Master selection of decompression modules for transcoding.
+ * This substitutes for jdmaster.c's initialization of the full decompressor.
+ */
+
+LOCAL void
+transdecode_master_selection (j_decompress_ptr cinfo)
+{
+  /* Entropy decoding: either Huffman or arithmetic coding. */
+  if (cinfo->arith_code) {
+    ERREXIT(cinfo, JERR_ARITH_NOTIMPL);
+  } else {
+    if (cinfo->progressive_mode) {
+#ifdef D_PROGRESSIVE_SUPPORTED
+      jinit_phuff_decoder(cinfo);
+#else
+      ERREXIT(cinfo, JERR_NOT_COMPILED);
+#endif
+    } else
+      jinit_huff_decoder(cinfo);
+  }
+
+  /* Always get a full-image coefficient buffer. */
+  jinit_d_coef_controller(cinfo, TRUE);
+
+  /* We can now tell the memory manager to allocate virtual arrays. */
+  (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo);
+
+  /* Initialize input side of decompressor to consume first scan. */
+  (*cinfo->inputctl->start_input_pass) (cinfo);
+
+  /* Initialize progress monitoring. */
+  if (cinfo->progress != NULL) {
+    int nscans;
+    /* Estimate number of scans to set pass_limit. */
+    if (cinfo->progressive_mode) {
+      /* Arbitrarily estimate 2 interleaved DC scans + 3 AC scans/component. */
+      nscans = 2 + 3 * cinfo->num_components;
+    } else if (cinfo->inputctl->has_multiple_scans) {
+      /* For a nonprogressive multiscan file, estimate 1 scan per component. */
+      nscans = cinfo->num_components;
+    } else {
+      nscans = 1;
+    }
+    cinfo->progress->pass_counter = 0L;
+    cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows * nscans;
+    cinfo->progress->completed_passes = 0;
+    cinfo->progress->total_passes = 1;
+  }
+}
diff --git a/libs/jpeg6/jerror.cpp b/libs/jpeg6/jerror.cpp
index 09027d8..595f371 100755
--- a/libs/jpeg6/jerror.cpp
+++ b/libs/jpeg6/jerror.cpp
@@ -1,231 +1,231 @@
-/*

- * jerror.c

- *

- * Copyright (C) 1991-1994, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains simple error-reporting and trace-message routines.

- * These are suitable for Unix-like systems and others where writing to

- * stderr is the right thing to do.  Many applications will want to replace

- * some or all of these routines.

- *

- * These routines are used by both the compression and decompression code.

- */

-

-/* this is not a core library module, so it doesn't define JPEG_INTERNALS */

-#include "jinclude.h"

-#include "jpeglib.h"

-#include "jversion.h"

-#include "jerror.h"

-

-#ifndef EXIT_FAILURE		/* define exit() codes if not provided */

-#define EXIT_FAILURE  1

-#endif

-

-

-/*

- * Create the message string table.

- * We do this from the master message list in jerror.h by re-reading

- * jerror.h with a suitable definition for macro JMESSAGE.

- * The message table is made an external symbol just in case any applications

- * want to refer to it directly.

- */

-

-#ifdef NEED_SHORT_EXTERNAL_NAMES

-#define jpeg_std_message_table	jMsgTable

-#endif

-

-#define JMESSAGE(code,string)	string ,

-

-const char * const jpeg_std_message_table[] = {

-#include "jerror.h"

-  NULL

-};

-

-

-/*

- * Error exit handler: must not return to caller.

- *

- * Applications may override this if they want to get control back after

- * an error.  Typically one would longjmp somewhere instead of exiting.

- * The setjmp buffer can be made a private field within an expanded error

- * handler object.  Note that the info needed to generate an error message

- * is stored in the error object, so you can generate the message now or

- * later, at your convenience.

- * You should make sure that the JPEG object is cleaned up (with jpeg_abort

- * or jpeg_destroy) at some point.

- */

-

-METHODDEF void

-error_exit (j_common_ptr cinfo)

-{

-  char buffer[JMSG_LENGTH_MAX];

-

-  /* Create the message */

-  (*cinfo->err->format_message) (cinfo, buffer);

-

-  /* Let the memory manager delete any temp files before we die */

-  jpeg_destroy(cinfo);

-

-  // FIXME: need to get this setup with an error handler

-  //Error("%s\n", buffer );

-}

-

-

-/*

- * Actual output of an error or trace message.

- * Applications may override this method to send JPEG messages somewhere

- * other than stderr.

- */

-

-METHODDEF void

-output_message (j_common_ptr cinfo)

-{

-  char buffer[JMSG_LENGTH_MAX];

-

-  /* Create the message */

-  (*cinfo->err->format_message) (cinfo, buffer);

-

-  /* Send it to stderr, adding a newline */

-  printf("%s\n", buffer);

-}

-

-

-/*

- * Decide whether to emit a trace or warning message.

- * msg_level is one of:

- *   -1: recoverable corrupt-data warning, may want to abort.

- *    0: important advisory messages (always display to user).

- *    1: first level of tracing detail.

- *    2,3,...: successively more detailed tracing messages.

- * An application might override this method if it wanted to abort on warnings

- * or change the policy about which messages to display.

- */

-

-METHODDEF void

-emit_message (j_common_ptr cinfo, int msg_level)

-{

-  struct jpeg_error_mgr * err = cinfo->err;

-

-  if (msg_level < 0) {

-    /* It's a warning message.  Since corrupt files may generate many warnings,

-     * the policy implemented here is to show only the first warning,

-     * unless trace_level >= 3.

-     */

-    if (err->num_warnings == 0 || err->trace_level >= 3)

-      (*err->output_message) (cinfo);

-    /* Always count warnings in num_warnings. */

-    err->num_warnings++;

-  } else {

-    /* It's a trace message.  Show it if trace_level >= msg_level. */

-    if (err->trace_level >= msg_level)

-      (*err->output_message) (cinfo);

-  }

-}

-

-

-/*

- * Format a message string for the most recent JPEG error or message.

- * The message is stored into buffer, which should be at least JMSG_LENGTH_MAX

- * characters.  Note that no '\n' character is added to the string.

- * Few applications should need to override this method.

- */

-

-METHODDEF void

-format_message (j_common_ptr cinfo, char * buffer)

-{

-  struct jpeg_error_mgr * err = cinfo->err;

-  int msg_code = err->msg_code;

-  const char * msgtext = NULL;

-  const char * msgptr;

-  char ch;

-  boolean isstring;

-

-  /* Look up message string in proper table */

-  if (msg_code > 0 && msg_code <= err->last_jpeg_message) {

-    msgtext = err->jpeg_message_table[msg_code];

-  } else if (err->addon_message_table != NULL &&

-	     msg_code >= err->first_addon_message &&

-	     msg_code <= err->last_addon_message) {

-    msgtext = err->addon_message_table[msg_code - err->first_addon_message];

-  }

-

-  /* Defend against bogus message number */

-  if (msgtext == NULL) {

-    err->msg_parm.i[0] = msg_code;

-    msgtext = err->jpeg_message_table[0];

-  }

-

-  /* Check for string parameter, as indicated by %s in the message text */

-  isstring = FALSE;

-  msgptr = msgtext;

-  while ((ch = *msgptr++) != '\0') {

-    if (ch == '%') {

-      if (*msgptr == 's') isstring = TRUE;

-      break;

-    }

-  }

-

-  /* Format the message into the passed buffer */

-  if (isstring)

-    sprintf(buffer, msgtext, err->msg_parm.s);

-  else

-    sprintf(buffer, msgtext,

-	    err->msg_parm.i[0], err->msg_parm.i[1],

-	    err->msg_parm.i[2], err->msg_parm.i[3],

-	    err->msg_parm.i[4], err->msg_parm.i[5],

-	    err->msg_parm.i[6], err->msg_parm.i[7]);

-}

-

-

-/*

- * Reset error state variables at start of a new image.

- * This is called during compression startup to reset trace/error

- * processing to default state, without losing any application-specific

- * method pointers.  An application might possibly want to override

- * this method if it has additional error processing state.

- */

-

-METHODDEF void

-reset_error_mgr (j_common_ptr cinfo)

-{

-  cinfo->err->num_warnings = 0;

-  /* trace_level is not reset since it is an application-supplied parameter */

-  cinfo->err->msg_code = 0;	/* may be useful as a flag for "no error" */

-}

-

-

-/*

- * Fill in the standard error-handling methods in a jpeg_error_mgr object.

- * Typical call is:

- *	struct jpeg_compress_struct cinfo;

- *	struct jpeg_error_mgr err;

- *

- *	cinfo.err = jpeg_std_error(&err);

- * after which the application may override some of the methods.

- */

-

-GLOBAL struct jpeg_error_mgr *

-jpeg_std_error (struct jpeg_error_mgr * err)

-{

-  err->error_exit = error_exit;

-  err->emit_message = emit_message;

-  err->output_message = output_message;

-  err->format_message = format_message;

-  err->reset_error_mgr = reset_error_mgr;

-

-  err->trace_level = 0;		/* default = no tracing */

-  err->num_warnings = 0;	/* no warnings emitted yet */

-  err->msg_code = 0;		/* may be useful as a flag for "no error" */

-

-  /* Initialize message table pointers */

-  err->jpeg_message_table = jpeg_std_message_table;

-  err->last_jpeg_message = (int) JMSG_LASTMSGCODE - 1;

-

-  err->addon_message_table = NULL;

-  err->first_addon_message = 0;	/* for safety */

-  err->last_addon_message = 0;

-

-  return err;

-}

+/*
+ * jerror.c
+ *
+ * Copyright (C) 1991-1994, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains simple error-reporting and trace-message routines.
+ * These are suitable for Unix-like systems and others where writing to
+ * stderr is the right thing to do.  Many applications will want to replace
+ * some or all of these routines.
+ *
+ * These routines are used by both the compression and decompression code.
+ */
+
+/* this is not a core library module, so it doesn't define JPEG_INTERNALS */
+#include "jinclude.h"
+#include "jpeglib.h"
+#include "jversion.h"
+#include "jerror.h"
+
+#ifndef EXIT_FAILURE		/* define exit() codes if not provided */
+#define EXIT_FAILURE  1
+#endif
+
+
+/*
+ * Create the message string table.
+ * We do this from the master message list in jerror.h by re-reading
+ * jerror.h with a suitable definition for macro JMESSAGE.
+ * The message table is made an external symbol just in case any applications
+ * want to refer to it directly.
+ */
+
+#ifdef NEED_SHORT_EXTERNAL_NAMES
+#define jpeg_std_message_table	jMsgTable
+#endif
+
+#define JMESSAGE(code,string)	string ,
+
+const char * const jpeg_std_message_table[] = {
+#include "jerror.h"
+  NULL
+};
+
+
+/*
+ * Error exit handler: must not return to caller.
+ *
+ * Applications may override this if they want to get control back after
+ * an error.  Typically one would longjmp somewhere instead of exiting.
+ * The setjmp buffer can be made a private field within an expanded error
+ * handler object.  Note that the info needed to generate an error message
+ * is stored in the error object, so you can generate the message now or
+ * later, at your convenience.
+ * You should make sure that the JPEG object is cleaned up (with jpeg_abort
+ * or jpeg_destroy) at some point.
+ */
+
+METHODDEF void
+error_exit (j_common_ptr cinfo)
+{
+  char buffer[JMSG_LENGTH_MAX];
+
+  /* Create the message */
+  (*cinfo->err->format_message) (cinfo, buffer);
+
+  /* Let the memory manager delete any temp files before we die */
+  jpeg_destroy(cinfo);
+
+  // FIXME: need to get this setup with an error handler
+  //Error("%s\n", buffer );
+}
+
+
+/*
+ * Actual output of an error or trace message.
+ * Applications may override this method to send JPEG messages somewhere
+ * other than stderr.
+ */
+
+METHODDEF void
+output_message (j_common_ptr cinfo)
+{
+  char buffer[JMSG_LENGTH_MAX];
+
+  /* Create the message */
+  (*cinfo->err->format_message) (cinfo, buffer);
+
+  /* Send it to stderr, adding a newline */
+  printf("%s\n", buffer);
+}
+
+
+/*
+ * Decide whether to emit a trace or warning message.
+ * msg_level is one of:
+ *   -1: recoverable corrupt-data warning, may want to abort.
+ *    0: important advisory messages (always display to user).
+ *    1: first level of tracing detail.
+ *    2,3,...: successively more detailed tracing messages.
+ * An application might override this method if it wanted to abort on warnings
+ * or change the policy about which messages to display.
+ */
+
+METHODDEF void
+emit_message (j_common_ptr cinfo, int msg_level)
+{
+  struct jpeg_error_mgr * err = cinfo->err;
+
+  if (msg_level < 0) {
+    /* It's a warning message.  Since corrupt files may generate many warnings,
+     * the policy implemented here is to show only the first warning,
+     * unless trace_level >= 3.
+     */
+    if (err->num_warnings == 0 || err->trace_level >= 3)
+      (*err->output_message) (cinfo);
+    /* Always count warnings in num_warnings. */
+    err->num_warnings++;
+  } else {
+    /* It's a trace message.  Show it if trace_level >= msg_level. */
+    if (err->trace_level >= msg_level)
+      (*err->output_message) (cinfo);
+  }
+}
+
+
+/*
+ * Format a message string for the most recent JPEG error or message.
+ * The message is stored into buffer, which should be at least JMSG_LENGTH_MAX
+ * characters.  Note that no '\n' character is added to the string.
+ * Few applications should need to override this method.
+ */
+
+METHODDEF void
+format_message (j_common_ptr cinfo, char * buffer)
+{
+  struct jpeg_error_mgr * err = cinfo->err;
+  int msg_code = err->msg_code;
+  const char * msgtext = NULL;
+  const char * msgptr;
+  char ch;
+  boolean isstring;
+
+  /* Look up message string in proper table */
+  if (msg_code > 0 && msg_code <= err->last_jpeg_message) {
+    msgtext = err->jpeg_message_table[msg_code];
+  } else if (err->addon_message_table != NULL &&
+	     msg_code >= err->first_addon_message &&
+	     msg_code <= err->last_addon_message) {
+    msgtext = err->addon_message_table[msg_code - err->first_addon_message];
+  }
+
+  /* Defend against bogus message number */
+  if (msgtext == NULL) {
+    err->msg_parm.i[0] = msg_code;
+    msgtext = err->jpeg_message_table[0];
+  }
+
+  /* Check for string parameter, as indicated by %s in the message text */
+  isstring = FALSE;
+  msgptr = msgtext;
+  while ((ch = *msgptr++) != '\0') {
+    if (ch == '%') {
+      if (*msgptr == 's') isstring = TRUE;
+      break;
+    }
+  }
+
+  /* Format the message into the passed buffer */
+  if (isstring)
+    sprintf(buffer, msgtext, err->msg_parm.s);
+  else
+    sprintf(buffer, msgtext,
+	    err->msg_parm.i[0], err->msg_parm.i[1],
+	    err->msg_parm.i[2], err->msg_parm.i[3],
+	    err->msg_parm.i[4], err->msg_parm.i[5],
+	    err->msg_parm.i[6], err->msg_parm.i[7]);
+}
+
+
+/*
+ * Reset error state variables at start of a new image.
+ * This is called during compression startup to reset trace/error
+ * processing to default state, without losing any application-specific
+ * method pointers.  An application might possibly want to override
+ * this method if it has additional error processing state.
+ */
+
+METHODDEF void
+reset_error_mgr (j_common_ptr cinfo)
+{
+  cinfo->err->num_warnings = 0;
+  /* trace_level is not reset since it is an application-supplied parameter */
+  cinfo->err->msg_code = 0;	/* may be useful as a flag for "no error" */
+}
+
+
+/*
+ * Fill in the standard error-handling methods in a jpeg_error_mgr object.
+ * Typical call is:
+ *	struct jpeg_compress_struct cinfo;
+ *	struct jpeg_error_mgr err;
+ *
+ *	cinfo.err = jpeg_std_error(&err);
+ * after which the application may override some of the methods.
+ */
+
+GLOBAL struct jpeg_error_mgr *
+jpeg_std_error (struct jpeg_error_mgr * err)
+{
+  err->error_exit = error_exit;
+  err->emit_message = emit_message;
+  err->output_message = output_message;
+  err->format_message = format_message;
+  err->reset_error_mgr = reset_error_mgr;
+
+  err->trace_level = 0;		/* default = no tracing */
+  err->num_warnings = 0;	/* no warnings emitted yet */
+  err->msg_code = 0;		/* may be useful as a flag for "no error" */
+
+  /* Initialize message table pointers */
+  err->jpeg_message_table = jpeg_std_message_table;
+  err->last_jpeg_message = (int) JMSG_LASTMSGCODE - 1;
+
+  err->addon_message_table = NULL;
+  err->first_addon_message = 0;	/* for safety */
+  err->last_addon_message = 0;
+
+  return err;
+}
diff --git a/libs/jpeg6/jerror.h b/libs/jpeg6/jerror.h
index 0ffb8b4..bf60e7e 100755
--- a/libs/jpeg6/jerror.h
+++ b/libs/jpeg6/jerror.h
@@ -1,273 +1,273 @@
-/*

- * jerror.h

- *

- * Copyright (C) 1994-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file defines the error and message codes for the JPEG library.

- * Edit this file to add new codes, or to translate the message strings to

- * some other language.

- * A set of error-reporting macros are defined too.  Some applications using

- * the JPEG library may wish to include this file to get the error codes

- * and/or the macros.

- */

-

-/*

- * To define the enum list of message codes, include this file without

- * defining macro JMESSAGE.  To create a message string table, include it

- * again with a suitable JMESSAGE definition (see jerror.c for an example).

- */

-#ifndef JMESSAGE

-#ifndef JERROR_H

-/* First time through, define the enum list */

-#define JMAKE_ENUM_LIST

-#else

-/* Repeated inclusions of this file are no-ops unless JMESSAGE is defined */

-#define JMESSAGE(code,string)

-#endif /* JERROR_H */

-#endif /* JMESSAGE */

-

-#ifdef JMAKE_ENUM_LIST

-

-typedef enum {

-

-#define JMESSAGE(code,string)	code ,

-

-#endif /* JMAKE_ENUM_LIST */

-

-JMESSAGE(JMSG_NOMESSAGE, "Bogus message code %d") /* Must be first entry! */

-

-/* For maintenance convenience, list is alphabetical by message code name */

-JMESSAGE(JERR_ARITH_NOTIMPL,

-	 "Sorry, there are legal restrictions on arithmetic coding")

-JMESSAGE(JERR_BAD_ALIGN_TYPE, "ALIGN_TYPE is wrong, please fix")

-JMESSAGE(JERR_BAD_ALLOC_CHUNK, "MAX_ALLOC_CHUNK is wrong, please fix")

-JMESSAGE(JERR_BAD_BUFFER_MODE, "Bogus buffer control mode")

-JMESSAGE(JERR_BAD_COMPONENT_ID, "Invalid component ID %d in SOS")

-JMESSAGE(JERR_BAD_DCTSIZE, "IDCT output block size %d not supported")

-JMESSAGE(JERR_BAD_IN_COLORSPACE, "Bogus input colorspace")

-JMESSAGE(JERR_BAD_J_COLORSPACE, "Bogus JPEG colorspace")

-JMESSAGE(JERR_BAD_LENGTH, "Bogus marker length")

-JMESSAGE(JERR_BAD_MCU_SIZE, "Sampling factors too large for interleaved scan")

-JMESSAGE(JERR_BAD_POOL_ID, "Invalid memory pool code %d")

-JMESSAGE(JERR_BAD_PRECISION, "Unsupported JPEG data precision %d")

-JMESSAGE(JERR_BAD_PROGRESSION,

-	 "Invalid progressive parameters Ss=%d Se=%d Ah=%d Al=%d")

-JMESSAGE(JERR_BAD_PROG_SCRIPT,

-	 "Invalid progressive parameters at scan script entry %d")

-JMESSAGE(JERR_BAD_SAMPLING, "Bogus sampling factors")

-JMESSAGE(JERR_BAD_SCAN_SCRIPT, "Invalid scan script at entry %d")

-JMESSAGE(JERR_BAD_STATE, "Improper call to JPEG library in state %d")

-JMESSAGE(JERR_BAD_VIRTUAL_ACCESS, "Bogus virtual array access")

-JMESSAGE(JERR_BUFFER_SIZE, "Buffer passed to JPEG library is too small")

-JMESSAGE(JERR_CANT_SUSPEND, "Suspension not allowed here")

-JMESSAGE(JERR_CCIR601_NOTIMPL, "CCIR601 sampling not implemented yet")

-JMESSAGE(JERR_COMPONENT_COUNT, "Too many color components: %d, max %d")

-JMESSAGE(JERR_CONVERSION_NOTIMPL, "Unsupported color conversion request")

-JMESSAGE(JERR_DAC_INDEX, "Bogus DAC index %d")

-JMESSAGE(JERR_DAC_VALUE, "Bogus DAC value 0x%x")

-JMESSAGE(JERR_DHT_COUNTS, "Bogus DHT counts")

-JMESSAGE(JERR_DHT_INDEX, "Bogus DHT index %d")

-JMESSAGE(JERR_DQT_INDEX, "Bogus DQT index %d")

-JMESSAGE(JERR_EMPTY_IMAGE, "Empty JPEG image (DNL not supported)")

-JMESSAGE(JERR_EMS_READ, "Read from EMS failed")

-JMESSAGE(JERR_EMS_WRITE, "Write to EMS failed")

-JMESSAGE(JERR_EOI_EXPECTED, "Didn't expect more than one scan")

-JMESSAGE(JERR_FILE_READ, "Input file read error")

-JMESSAGE(JERR_FILE_WRITE, "Output file write error --- out of disk space?")

-JMESSAGE(JERR_FRACT_SAMPLE_NOTIMPL, "Fractional sampling not implemented yet")

-JMESSAGE(JERR_HUFF_CLEN_OVERFLOW, "Huffman code size table overflow")

-JMESSAGE(JERR_HUFF_MISSING_CODE, "Missing Huffman code table entry")

-JMESSAGE(JERR_IMAGE_TOO_BIG, "Maximum supported image dimension is %u pixels")

-JMESSAGE(JERR_INPUT_EMPTY, "Empty input file")

-JMESSAGE(JERR_INPUT_EOF, "Premature end of input file")

-JMESSAGE(JERR_MISMATCHED_QUANT_TABLE,

-	 "Cannot transcode due to multiple use of quantization table %d")

-JMESSAGE(JERR_MISSING_DATA, "Scan script does not transmit all data")

-JMESSAGE(JERR_MODE_CHANGE, "Invalid color quantization mode change")

-JMESSAGE(JERR_NOTIMPL, "Not implemented yet")

-JMESSAGE(JERR_NOT_COMPILED, "Requested feature was omitted at compile time")

-JMESSAGE(JERR_NO_BACKING_STORE, "Backing store not supported")

-JMESSAGE(JERR_NO_HUFF_TABLE, "Huffman table 0x%02x was not defined")

-JMESSAGE(JERR_NO_IMAGE, "JPEG datastream contains no image")

-JMESSAGE(JERR_NO_QUANT_TABLE, "Quantization table 0x%02x was not defined")

-JMESSAGE(JERR_NO_SOI, "Not a JPEG file: starts with 0x%02x 0x%02x")

-JMESSAGE(JERR_OUT_OF_MEMORY, "Insufficient memory (case %d)")

-JMESSAGE(JERR_QUANT_COMPONENTS,

-	 "Cannot quantize more than %d color components")

-JMESSAGE(JERR_QUANT_FEW_COLORS, "Cannot quantize to fewer than %d colors")

-JMESSAGE(JERR_QUANT_MANY_COLORS, "Cannot quantize to more than %d colors")

-JMESSAGE(JERR_SOF_DUPLICATE, "Invalid JPEG file structure: two SOF markers")

-JMESSAGE(JERR_SOF_NO_SOS, "Invalid JPEG file structure: missing SOS marker")

-JMESSAGE(JERR_SOF_UNSUPPORTED, "Unsupported JPEG process: SOF type 0x%02x")

-JMESSAGE(JERR_SOI_DUPLICATE, "Invalid JPEG file structure: two SOI markers")

-JMESSAGE(JERR_SOS_NO_SOF, "Invalid JPEG file structure: SOS before SOF")

-JMESSAGE(JERR_TFILE_CREATE, "Failed to create temporary file %s")

-JMESSAGE(JERR_TFILE_READ, "Read failed on temporary file")

-JMESSAGE(JERR_TFILE_SEEK, "Seek failed on temporary file")

-JMESSAGE(JERR_TFILE_WRITE,

-	 "Write failed on temporary file --- out of disk space?")

-JMESSAGE(JERR_TOO_LITTLE_DATA, "Application transferred too few scanlines")

-JMESSAGE(JERR_UNKNOWN_MARKER, "Unsupported marker type 0x%02x")

-JMESSAGE(JERR_VIRTUAL_BUG, "Virtual array controller messed up")

-JMESSAGE(JERR_WIDTH_OVERFLOW, "Image too wide for this implementation")

-JMESSAGE(JERR_XMS_READ, "Read from XMS failed")

-JMESSAGE(JERR_XMS_WRITE, "Write to XMS failed")

-JMESSAGE(JMSG_COPYRIGHT, JCOPYRIGHT)

-JMESSAGE(JMSG_VERSION, JVERSION)

-JMESSAGE(JTRC_16BIT_TABLES,

-	 "Caution: quantization tables are too coarse for baseline JPEG")

-JMESSAGE(JTRC_ADOBE,

-	 "Adobe APP14 marker: version %d, flags 0x%04x 0x%04x, transform %d")

-JMESSAGE(JTRC_APP0, "Unknown APP0 marker (not JFIF), length %u")

-JMESSAGE(JTRC_APP14, "Unknown APP14 marker (not Adobe), length %u")

-JMESSAGE(JTRC_DAC, "Define Arithmetic Table 0x%02x: 0x%02x")

-JMESSAGE(JTRC_DHT, "Define Huffman Table 0x%02x")

-JMESSAGE(JTRC_DQT, "Define Quantization Table %d  precision %d")

-JMESSAGE(JTRC_DRI, "Define Restart Interval %u")

-JMESSAGE(JTRC_EMS_CLOSE, "Freed EMS handle %u")

-JMESSAGE(JTRC_EMS_OPEN, "Obtained EMS handle %u")

-JMESSAGE(JTRC_EOI, "End Of Image")

-JMESSAGE(JTRC_HUFFBITS, "        %3d %3d %3d %3d %3d %3d %3d %3d")

-JMESSAGE(JTRC_JFIF, "JFIF APP0 marker, density %dx%d  %d")

-JMESSAGE(JTRC_JFIF_BADTHUMBNAILSIZE,

-	 "Warning: thumbnail image size does not match data length %u")

-JMESSAGE(JTRC_JFIF_MINOR, "Unknown JFIF minor revision number %d.%02d")

-JMESSAGE(JTRC_JFIF_THUMBNAIL, "    with %d x %d thumbnail image")

-JMESSAGE(JTRC_MISC_MARKER, "Skipping marker 0x%02x, length %u")

-JMESSAGE(JTRC_PARMLESS_MARKER, "Unexpected marker 0x%02x")

-JMESSAGE(JTRC_QUANTVALS, "        %4u %4u %4u %4u %4u %4u %4u %4u")

-JMESSAGE(JTRC_QUANT_3_NCOLORS, "Quantizing to %d = %d*%d*%d colors")

-JMESSAGE(JTRC_QUANT_NCOLORS, "Quantizing to %d colors")

-JMESSAGE(JTRC_QUANT_SELECTED, "Selected %d colors for quantization")

-JMESSAGE(JTRC_RECOVERY_ACTION, "At marker 0x%02x, recovery action %d")

-JMESSAGE(JTRC_RST, "RST%d")

-JMESSAGE(JTRC_SMOOTH_NOTIMPL,

-	 "Smoothing not supported with nonstandard sampling ratios")

-JMESSAGE(JTRC_SOF, "Start Of Frame 0x%02x: width=%u, height=%u, components=%d")

-JMESSAGE(JTRC_SOF_COMPONENT, "    Component %d: %dhx%dv q=%d")

-JMESSAGE(JTRC_SOI, "Start of Image")

-JMESSAGE(JTRC_SOS, "Start Of Scan: %d components")

-JMESSAGE(JTRC_SOS_COMPONENT, "    Component %d: dc=%d ac=%d")

-JMESSAGE(JTRC_SOS_PARAMS, "  Ss=%d, Se=%d, Ah=%d, Al=%d")

-JMESSAGE(JTRC_TFILE_CLOSE, "Closed temporary file %s")

-JMESSAGE(JTRC_TFILE_OPEN, "Opened temporary file %s")

-JMESSAGE(JTRC_UNKNOWN_IDS,

-	 "Unrecognized component IDs %d %d %d, assuming YCbCr")

-JMESSAGE(JTRC_XMS_CLOSE, "Freed XMS handle %u")

-JMESSAGE(JTRC_XMS_OPEN, "Obtained XMS handle %u")

-JMESSAGE(JWRN_ADOBE_XFORM, "Unknown Adobe color transform code %d")

-JMESSAGE(JWRN_BOGUS_PROGRESSION,

-	 "Inconsistent progression sequence for component %d coefficient %d")

-JMESSAGE(JWRN_EXTRANEOUS_DATA,

-	 "Corrupt JPEG data: %u extraneous bytes before marker 0x%02x")

-JMESSAGE(JWRN_HIT_MARKER, "Corrupt JPEG data: premature end of data segment")

-JMESSAGE(JWRN_HUFF_BAD_CODE, "Corrupt JPEG data: bad Huffman code")

-JMESSAGE(JWRN_JFIF_MAJOR, "Warning: unknown JFIF revision number %d.%02d")

-JMESSAGE(JWRN_JPEG_EOF, "Premature end of JPEG file")

-JMESSAGE(JWRN_MUST_RESYNC,

-	 "Corrupt JPEG data: found marker 0x%02x instead of RST%d")

-JMESSAGE(JWRN_NOT_SEQUENTIAL, "Invalid SOS parameters for sequential JPEG")

-JMESSAGE(JWRN_TOO_MUCH_DATA, "Application transferred too many scanlines")

-

-#ifdef JMAKE_ENUM_LIST

-

-  JMSG_LASTMSGCODE

-} J_MESSAGE_CODE;

-

-#undef JMAKE_ENUM_LIST

-#endif /* JMAKE_ENUM_LIST */

-

-/* Zap JMESSAGE macro so that future re-inclusions do nothing by default */

-#undef JMESSAGE

-

-

-#ifndef JERROR_H

-#define JERROR_H

-

-/* Macros to simplify using the error and trace message stuff */

-/* The first parameter is either type of cinfo pointer */

-

-/* Fatal errors (print message and exit) */

-#define ERREXIT(cinfo,code)  \

-  ((cinfo)->err->msg_code = (code), \

-   (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))

-#define ERREXIT1(cinfo,code,p1)  \

-  ((cinfo)->err->msg_code = (code), \

-   (cinfo)->err->msg_parm.i[0] = (p1), \

-   (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))

-#define ERREXIT2(cinfo,code,p1,p2)  \

-  ((cinfo)->err->msg_code = (code), \

-   (cinfo)->err->msg_parm.i[0] = (p1), \

-   (cinfo)->err->msg_parm.i[1] = (p2), \

-   (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))

-#define ERREXIT3(cinfo,code,p1,p2,p3)  \

-  ((cinfo)->err->msg_code = (code), \

-   (cinfo)->err->msg_parm.i[0] = (p1), \

-   (cinfo)->err->msg_parm.i[1] = (p2), \

-   (cinfo)->err->msg_parm.i[2] = (p3), \

-   (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))

-#define ERREXIT4(cinfo,code,p1,p2,p3,p4)  \

-  ((cinfo)->err->msg_code = (code), \

-   (cinfo)->err->msg_parm.i[0] = (p1), \

-   (cinfo)->err->msg_parm.i[1] = (p2), \

-   (cinfo)->err->msg_parm.i[2] = (p3), \

-   (cinfo)->err->msg_parm.i[3] = (p4), \

-   (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))

-#define ERREXITS(cinfo,code,str)  \

-  ((cinfo)->err->msg_code = (code), \

-   strncpy((cinfo)->err->msg_parm.s, (str), JMSG_STR_PARM_MAX), \

-   (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))

-

-#define MAKESTMT(stuff)		do { stuff } while (0)

-

-/* Nonfatal errors (we can keep going, but the data is probably corrupt) */

-#define WARNMS(cinfo,code)  \

-  ((cinfo)->err->msg_code = (code), \

-   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1))

-#define WARNMS1(cinfo,code,p1)  \

-  ((cinfo)->err->msg_code = (code), \

-   (cinfo)->err->msg_parm.i[0] = (p1), \

-   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1))

-#define WARNMS2(cinfo,code,p1,p2)  \

-  ((cinfo)->err->msg_code = (code), \

-   (cinfo)->err->msg_parm.i[0] = (p1), \

-   (cinfo)->err->msg_parm.i[1] = (p2), \

-   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1))

-

-/* Informational/debugging messages */

-#define TRACEMS(cinfo,lvl,code)  \

-  ((cinfo)->err->msg_code = (code), \

-   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)))

-#define TRACEMS1(cinfo,lvl,code,p1)  \

-  ((cinfo)->err->msg_code = (code), \

-   (cinfo)->err->msg_parm.i[0] = (p1), \

-   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)))

-#define TRACEMS2(cinfo,lvl,code,p1,p2)  \

-  ((cinfo)->err->msg_code = (code), \

-   (cinfo)->err->msg_parm.i[0] = (p1), \

-   (cinfo)->err->msg_parm.i[1] = (p2), \

-   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)))

-#define TRACEMS3(cinfo,lvl,code,p1,p2,p3)  \

-  MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \

-	   _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); \

-	   (cinfo)->err->msg_code = (code); \

-	   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); )

-#define TRACEMS4(cinfo,lvl,code,p1,p2,p3,p4)  \

-  MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \

-	   _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \

-	   (cinfo)->err->msg_code = (code); \

-	   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); )

-#define TRACEMS8(cinfo,lvl,code,p1,p2,p3,p4,p5,p6,p7,p8)  \

-  MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \

-	   _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \

-	   _mp[4] = (p5); _mp[5] = (p6); _mp[6] = (p7); _mp[7] = (p8); \

-	   (cinfo)->err->msg_code = (code); \

-	   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); )

-#define TRACEMSS(cinfo,lvl,code,str)  \

-  ((cinfo)->err->msg_code = (code), \

-   strncpy((cinfo)->err->msg_parm.s, (str), JMSG_STR_PARM_MAX), \

-   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)))

-

-#endif /* JERROR_H */

+/*
+ * jerror.h
+ *
+ * Copyright (C) 1994-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file defines the error and message codes for the JPEG library.
+ * Edit this file to add new codes, or to translate the message strings to
+ * some other language.
+ * A set of error-reporting macros are defined too.  Some applications using
+ * the JPEG library may wish to include this file to get the error codes
+ * and/or the macros.
+ */
+
+/*
+ * To define the enum list of message codes, include this file without
+ * defining macro JMESSAGE.  To create a message string table, include it
+ * again with a suitable JMESSAGE definition (see jerror.c for an example).
+ */
+#ifndef JMESSAGE
+#ifndef JERROR_H
+/* First time through, define the enum list */
+#define JMAKE_ENUM_LIST
+#else
+/* Repeated inclusions of this file are no-ops unless JMESSAGE is defined */
+#define JMESSAGE(code,string)
+#endif /* JERROR_H */
+#endif /* JMESSAGE */
+
+#ifdef JMAKE_ENUM_LIST
+
+typedef enum {
+
+#define JMESSAGE(code,string)	code ,
+
+#endif /* JMAKE_ENUM_LIST */
+
+JMESSAGE(JMSG_NOMESSAGE, "Bogus message code %d") /* Must be first entry! */
+
+/* For maintenance convenience, list is alphabetical by message code name */
+JMESSAGE(JERR_ARITH_NOTIMPL,
+	 "Sorry, there are legal restrictions on arithmetic coding")
+JMESSAGE(JERR_BAD_ALIGN_TYPE, "ALIGN_TYPE is wrong, please fix")
+JMESSAGE(JERR_BAD_ALLOC_CHUNK, "MAX_ALLOC_CHUNK is wrong, please fix")
+JMESSAGE(JERR_BAD_BUFFER_MODE, "Bogus buffer control mode")
+JMESSAGE(JERR_BAD_COMPONENT_ID, "Invalid component ID %d in SOS")
+JMESSAGE(JERR_BAD_DCTSIZE, "IDCT output block size %d not supported")
+JMESSAGE(JERR_BAD_IN_COLORSPACE, "Bogus input colorspace")
+JMESSAGE(JERR_BAD_J_COLORSPACE, "Bogus JPEG colorspace")
+JMESSAGE(JERR_BAD_LENGTH, "Bogus marker length")
+JMESSAGE(JERR_BAD_MCU_SIZE, "Sampling factors too large for interleaved scan")
+JMESSAGE(JERR_BAD_POOL_ID, "Invalid memory pool code %d")
+JMESSAGE(JERR_BAD_PRECISION, "Unsupported JPEG data precision %d")
+JMESSAGE(JERR_BAD_PROGRESSION,
+	 "Invalid progressive parameters Ss=%d Se=%d Ah=%d Al=%d")
+JMESSAGE(JERR_BAD_PROG_SCRIPT,
+	 "Invalid progressive parameters at scan script entry %d")
+JMESSAGE(JERR_BAD_SAMPLING, "Bogus sampling factors")
+JMESSAGE(JERR_BAD_SCAN_SCRIPT, "Invalid scan script at entry %d")
+JMESSAGE(JERR_BAD_STATE, "Improper call to JPEG library in state %d")
+JMESSAGE(JERR_BAD_VIRTUAL_ACCESS, "Bogus virtual array access")
+JMESSAGE(JERR_BUFFER_SIZE, "Buffer passed to JPEG library is too small")
+JMESSAGE(JERR_CANT_SUSPEND, "Suspension not allowed here")
+JMESSAGE(JERR_CCIR601_NOTIMPL, "CCIR601 sampling not implemented yet")
+JMESSAGE(JERR_COMPONENT_COUNT, "Too many color components: %d, max %d")
+JMESSAGE(JERR_CONVERSION_NOTIMPL, "Unsupported color conversion request")
+JMESSAGE(JERR_DAC_INDEX, "Bogus DAC index %d")
+JMESSAGE(JERR_DAC_VALUE, "Bogus DAC value 0x%x")
+JMESSAGE(JERR_DHT_COUNTS, "Bogus DHT counts")
+JMESSAGE(JERR_DHT_INDEX, "Bogus DHT index %d")
+JMESSAGE(JERR_DQT_INDEX, "Bogus DQT index %d")
+JMESSAGE(JERR_EMPTY_IMAGE, "Empty JPEG image (DNL not supported)")
+JMESSAGE(JERR_EMS_READ, "Read from EMS failed")
+JMESSAGE(JERR_EMS_WRITE, "Write to EMS failed")
+JMESSAGE(JERR_EOI_EXPECTED, "Didn't expect more than one scan")
+JMESSAGE(JERR_FILE_READ, "Input file read error")
+JMESSAGE(JERR_FILE_WRITE, "Output file write error --- out of disk space?")
+JMESSAGE(JERR_FRACT_SAMPLE_NOTIMPL, "Fractional sampling not implemented yet")
+JMESSAGE(JERR_HUFF_CLEN_OVERFLOW, "Huffman code size table overflow")
+JMESSAGE(JERR_HUFF_MISSING_CODE, "Missing Huffman code table entry")
+JMESSAGE(JERR_IMAGE_TOO_BIG, "Maximum supported image dimension is %u pixels")
+JMESSAGE(JERR_INPUT_EMPTY, "Empty input file")
+JMESSAGE(JERR_INPUT_EOF, "Premature end of input file")
+JMESSAGE(JERR_MISMATCHED_QUANT_TABLE,
+	 "Cannot transcode due to multiple use of quantization table %d")
+JMESSAGE(JERR_MISSING_DATA, "Scan script does not transmit all data")
+JMESSAGE(JERR_MODE_CHANGE, "Invalid color quantization mode change")
+JMESSAGE(JERR_NOTIMPL, "Not implemented yet")
+JMESSAGE(JERR_NOT_COMPILED, "Requested feature was omitted at compile time")
+JMESSAGE(JERR_NO_BACKING_STORE, "Backing store not supported")
+JMESSAGE(JERR_NO_HUFF_TABLE, "Huffman table 0x%02x was not defined")
+JMESSAGE(JERR_NO_IMAGE, "JPEG datastream contains no image")
+JMESSAGE(JERR_NO_QUANT_TABLE, "Quantization table 0x%02x was not defined")
+JMESSAGE(JERR_NO_SOI, "Not a JPEG file: starts with 0x%02x 0x%02x")
+JMESSAGE(JERR_OUT_OF_MEMORY, "Insufficient memory (case %d)")
+JMESSAGE(JERR_QUANT_COMPONENTS,
+	 "Cannot quantize more than %d color components")
+JMESSAGE(JERR_QUANT_FEW_COLORS, "Cannot quantize to fewer than %d colors")
+JMESSAGE(JERR_QUANT_MANY_COLORS, "Cannot quantize to more than %d colors")
+JMESSAGE(JERR_SOF_DUPLICATE, "Invalid JPEG file structure: two SOF markers")
+JMESSAGE(JERR_SOF_NO_SOS, "Invalid JPEG file structure: missing SOS marker")
+JMESSAGE(JERR_SOF_UNSUPPORTED, "Unsupported JPEG process: SOF type 0x%02x")
+JMESSAGE(JERR_SOI_DUPLICATE, "Invalid JPEG file structure: two SOI markers")
+JMESSAGE(JERR_SOS_NO_SOF, "Invalid JPEG file structure: SOS before SOF")
+JMESSAGE(JERR_TFILE_CREATE, "Failed to create temporary file %s")
+JMESSAGE(JERR_TFILE_READ, "Read failed on temporary file")
+JMESSAGE(JERR_TFILE_SEEK, "Seek failed on temporary file")
+JMESSAGE(JERR_TFILE_WRITE,
+	 "Write failed on temporary file --- out of disk space?")
+JMESSAGE(JERR_TOO_LITTLE_DATA, "Application transferred too few scanlines")
+JMESSAGE(JERR_UNKNOWN_MARKER, "Unsupported marker type 0x%02x")
+JMESSAGE(JERR_VIRTUAL_BUG, "Virtual array controller messed up")
+JMESSAGE(JERR_WIDTH_OVERFLOW, "Image too wide for this implementation")
+JMESSAGE(JERR_XMS_READ, "Read from XMS failed")
+JMESSAGE(JERR_XMS_WRITE, "Write to XMS failed")
+JMESSAGE(JMSG_COPYRIGHT, JCOPYRIGHT)
+JMESSAGE(JMSG_VERSION, JVERSION)
+JMESSAGE(JTRC_16BIT_TABLES,
+	 "Caution: quantization tables are too coarse for baseline JPEG")
+JMESSAGE(JTRC_ADOBE,
+	 "Adobe APP14 marker: version %d, flags 0x%04x 0x%04x, transform %d")
+JMESSAGE(JTRC_APP0, "Unknown APP0 marker (not JFIF), length %u")
+JMESSAGE(JTRC_APP14, "Unknown APP14 marker (not Adobe), length %u")
+JMESSAGE(JTRC_DAC, "Define Arithmetic Table 0x%02x: 0x%02x")
+JMESSAGE(JTRC_DHT, "Define Huffman Table 0x%02x")
+JMESSAGE(JTRC_DQT, "Define Quantization Table %d  precision %d")
+JMESSAGE(JTRC_DRI, "Define Restart Interval %u")
+JMESSAGE(JTRC_EMS_CLOSE, "Freed EMS handle %u")
+JMESSAGE(JTRC_EMS_OPEN, "Obtained EMS handle %u")
+JMESSAGE(JTRC_EOI, "End Of Image")
+JMESSAGE(JTRC_HUFFBITS, "        %3d %3d %3d %3d %3d %3d %3d %3d")
+JMESSAGE(JTRC_JFIF, "JFIF APP0 marker, density %dx%d  %d")
+JMESSAGE(JTRC_JFIF_BADTHUMBNAILSIZE,
+	 "Warning: thumbnail image size does not match data length %u")
+JMESSAGE(JTRC_JFIF_MINOR, "Unknown JFIF minor revision number %d.%02d")
+JMESSAGE(JTRC_JFIF_THUMBNAIL, "    with %d x %d thumbnail image")
+JMESSAGE(JTRC_MISC_MARKER, "Skipping marker 0x%02x, length %u")
+JMESSAGE(JTRC_PARMLESS_MARKER, "Unexpected marker 0x%02x")
+JMESSAGE(JTRC_QUANTVALS, "        %4u %4u %4u %4u %4u %4u %4u %4u")
+JMESSAGE(JTRC_QUANT_3_NCOLORS, "Quantizing to %d = %d*%d*%d colors")
+JMESSAGE(JTRC_QUANT_NCOLORS, "Quantizing to %d colors")
+JMESSAGE(JTRC_QUANT_SELECTED, "Selected %d colors for quantization")
+JMESSAGE(JTRC_RECOVERY_ACTION, "At marker 0x%02x, recovery action %d")
+JMESSAGE(JTRC_RST, "RST%d")
+JMESSAGE(JTRC_SMOOTH_NOTIMPL,
+	 "Smoothing not supported with nonstandard sampling ratios")
+JMESSAGE(JTRC_SOF, "Start Of Frame 0x%02x: width=%u, height=%u, components=%d")
+JMESSAGE(JTRC_SOF_COMPONENT, "    Component %d: %dhx%dv q=%d")
+JMESSAGE(JTRC_SOI, "Start of Image")
+JMESSAGE(JTRC_SOS, "Start Of Scan: %d components")
+JMESSAGE(JTRC_SOS_COMPONENT, "    Component %d: dc=%d ac=%d")
+JMESSAGE(JTRC_SOS_PARAMS, "  Ss=%d, Se=%d, Ah=%d, Al=%d")
+JMESSAGE(JTRC_TFILE_CLOSE, "Closed temporary file %s")
+JMESSAGE(JTRC_TFILE_OPEN, "Opened temporary file %s")
+JMESSAGE(JTRC_UNKNOWN_IDS,
+	 "Unrecognized component IDs %d %d %d, assuming YCbCr")
+JMESSAGE(JTRC_XMS_CLOSE, "Freed XMS handle %u")
+JMESSAGE(JTRC_XMS_OPEN, "Obtained XMS handle %u")
+JMESSAGE(JWRN_ADOBE_XFORM, "Unknown Adobe color transform code %d")
+JMESSAGE(JWRN_BOGUS_PROGRESSION,
+	 "Inconsistent progression sequence for component %d coefficient %d")
+JMESSAGE(JWRN_EXTRANEOUS_DATA,
+	 "Corrupt JPEG data: %u extraneous bytes before marker 0x%02x")
+JMESSAGE(JWRN_HIT_MARKER, "Corrupt JPEG data: premature end of data segment")
+JMESSAGE(JWRN_HUFF_BAD_CODE, "Corrupt JPEG data: bad Huffman code")
+JMESSAGE(JWRN_JFIF_MAJOR, "Warning: unknown JFIF revision number %d.%02d")
+JMESSAGE(JWRN_JPEG_EOF, "Premature end of JPEG file")
+JMESSAGE(JWRN_MUST_RESYNC,
+	 "Corrupt JPEG data: found marker 0x%02x instead of RST%d")
+JMESSAGE(JWRN_NOT_SEQUENTIAL, "Invalid SOS parameters for sequential JPEG")
+JMESSAGE(JWRN_TOO_MUCH_DATA, "Application transferred too many scanlines")
+
+#ifdef JMAKE_ENUM_LIST
+
+  JMSG_LASTMSGCODE
+} J_MESSAGE_CODE;
+
+#undef JMAKE_ENUM_LIST
+#endif /* JMAKE_ENUM_LIST */
+
+/* Zap JMESSAGE macro so that future re-inclusions do nothing by default */
+#undef JMESSAGE
+
+
+#ifndef JERROR_H
+#define JERROR_H
+
+/* Macros to simplify using the error and trace message stuff */
+/* The first parameter is either type of cinfo pointer */
+
+/* Fatal errors (print message and exit) */
+#define ERREXIT(cinfo,code)  \
+  ((cinfo)->err->msg_code = (code), \
+   (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))
+#define ERREXIT1(cinfo,code,p1)  \
+  ((cinfo)->err->msg_code = (code), \
+   (cinfo)->err->msg_parm.i[0] = (p1), \
+   (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))
+#define ERREXIT2(cinfo,code,p1,p2)  \
+  ((cinfo)->err->msg_code = (code), \
+   (cinfo)->err->msg_parm.i[0] = (p1), \
+   (cinfo)->err->msg_parm.i[1] = (p2), \
+   (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))
+#define ERREXIT3(cinfo,code,p1,p2,p3)  \
+  ((cinfo)->err->msg_code = (code), \
+   (cinfo)->err->msg_parm.i[0] = (p1), \
+   (cinfo)->err->msg_parm.i[1] = (p2), \
+   (cinfo)->err->msg_parm.i[2] = (p3), \
+   (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))
+#define ERREXIT4(cinfo,code,p1,p2,p3,p4)  \
+  ((cinfo)->err->msg_code = (code), \
+   (cinfo)->err->msg_parm.i[0] = (p1), \
+   (cinfo)->err->msg_parm.i[1] = (p2), \
+   (cinfo)->err->msg_parm.i[2] = (p3), \
+   (cinfo)->err->msg_parm.i[3] = (p4), \
+   (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))
+#define ERREXITS(cinfo,code,str)  \
+  ((cinfo)->err->msg_code = (code), \
+   strncpy((cinfo)->err->msg_parm.s, (str), JMSG_STR_PARM_MAX), \
+   (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)))
+
+#define MAKESTMT(stuff)		do { stuff } while (0)
+
+/* Nonfatal errors (we can keep going, but the data is probably corrupt) */
+#define WARNMS(cinfo,code)  \
+  ((cinfo)->err->msg_code = (code), \
+   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1))
+#define WARNMS1(cinfo,code,p1)  \
+  ((cinfo)->err->msg_code = (code), \
+   (cinfo)->err->msg_parm.i[0] = (p1), \
+   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1))
+#define WARNMS2(cinfo,code,p1,p2)  \
+  ((cinfo)->err->msg_code = (code), \
+   (cinfo)->err->msg_parm.i[0] = (p1), \
+   (cinfo)->err->msg_parm.i[1] = (p2), \
+   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1))
+
+/* Informational/debugging messages */
+#define TRACEMS(cinfo,lvl,code)  \
+  ((cinfo)->err->msg_code = (code), \
+   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)))
+#define TRACEMS1(cinfo,lvl,code,p1)  \
+  ((cinfo)->err->msg_code = (code), \
+   (cinfo)->err->msg_parm.i[0] = (p1), \
+   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)))
+#define TRACEMS2(cinfo,lvl,code,p1,p2)  \
+  ((cinfo)->err->msg_code = (code), \
+   (cinfo)->err->msg_parm.i[0] = (p1), \
+   (cinfo)->err->msg_parm.i[1] = (p2), \
+   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)))
+#define TRACEMS3(cinfo,lvl,code,p1,p2,p3)  \
+  MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \
+	   _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); \
+	   (cinfo)->err->msg_code = (code); \
+	   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); )
+#define TRACEMS4(cinfo,lvl,code,p1,p2,p3,p4)  \
+  MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \
+	   _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \
+	   (cinfo)->err->msg_code = (code); \
+	   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); )
+#define TRACEMS8(cinfo,lvl,code,p1,p2,p3,p4,p5,p6,p7,p8)  \
+  MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \
+	   _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \
+	   _mp[4] = (p5); _mp[5] = (p6); _mp[6] = (p7); _mp[7] = (p8); \
+	   (cinfo)->err->msg_code = (code); \
+	   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); )
+#define TRACEMSS(cinfo,lvl,code,str)  \
+  ((cinfo)->err->msg_code = (code), \
+   strncpy((cinfo)->err->msg_parm.s, (str), JMSG_STR_PARM_MAX), \
+   (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)))
+
+#endif /* JERROR_H */
diff --git a/libs/jpeg6/jfdctflt.cpp b/libs/jpeg6/jfdctflt.cpp
index 1509b88..21371eb 100755
--- a/libs/jpeg6/jfdctflt.cpp
+++ b/libs/jpeg6/jfdctflt.cpp
@@ -1,168 +1,168 @@
-/*

- * jfdctflt.c

- *

- * Copyright (C) 1994, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains a floating-point implementation of the

- * forward DCT (Discrete Cosine Transform).

- *

- * This implementation should be more accurate than either of the integer

- * DCT implementations.  However, it may not give the same results on all

- * machines because of differences in roundoff behavior.  Speed will depend

- * on the hardware's floating point capacity.

- *

- * A 2-D DCT can be done by 1-D DCT on each row followed by 1-D DCT

- * on each column.  Direct algorithms are also available, but they are

- * much more complex and seem not to be any faster when reduced to code.

- *

- * This implementation is based on Arai, Agui, and Nakajima's algorithm for

- * scaled DCT.  Their original paper (Trans. IEICE E-71(11):1095) is in

- * Japanese, but the algorithm is described in the Pennebaker & Mitchell

- * JPEG textbook (see REFERENCES section in file README).  The following code

- * is based directly on figure 4-8 in P&M.

- * While an 8-point DCT cannot be done in less than 11 multiplies, it is

- * possible to arrange the computation so that many of the multiplies are

- * simple scalings of the final outputs.  These multiplies can then be

- * folded into the multiplications or divisions by the JPEG quantization

- * table entries.  The AA&N method leaves only 5 multiplies and 29 adds

- * to be done in the DCT itself.

- * The primary disadvantage of this method is that with a fixed-point

- * implementation, accuracy is lost due to imprecise representation of the

- * scaled quantization values.  However, that problem does not arise if

- * we use floating point arithmetic.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-#include "jdct.h"		/* Private declarations for DCT subsystem */

-

-#ifdef DCT_FLOAT_SUPPORTED

-

-

-/*

- * This module is specialized to the case DCTSIZE = 8.

- */

-

-#if DCTSIZE != 8

-  Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */

-#endif

-

-

-/*

- * Perform the forward DCT on one block of samples.

- */

-

-GLOBAL void

-jpeg_fdct_float (FAST_FLOAT * data)

-{

-  FAST_FLOAT tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;

-  FAST_FLOAT tmp10, tmp11, tmp12, tmp13;

-  FAST_FLOAT z1, z2, z3, z4, z5, z11, z13;

-  FAST_FLOAT *dataptr;

-  int ctr;

-

-  /* Pass 1: process rows. */

-

-  dataptr = data;

-  for (ctr = DCTSIZE-1; ctr >= 0; ctr--) {

-    tmp0 = dataptr[0] + dataptr[7];

-    tmp7 = dataptr[0] - dataptr[7];

-    tmp1 = dataptr[1] + dataptr[6];

-    tmp6 = dataptr[1] - dataptr[6];

-    tmp2 = dataptr[2] + dataptr[5];

-    tmp5 = dataptr[2] - dataptr[5];

-    tmp3 = dataptr[3] + dataptr[4];

-    tmp4 = dataptr[3] - dataptr[4];

-    

-    /* Even part */

-    

-    tmp10 = tmp0 + tmp3;	/* phase 2 */

-    tmp13 = tmp0 - tmp3;

-    tmp11 = tmp1 + tmp2;

-    tmp12 = tmp1 - tmp2;

-    

-    dataptr[0] = tmp10 + tmp11; /* phase 3 */

-    dataptr[4] = tmp10 - tmp11;

-    

-    z1 = (tmp12 + tmp13) * ((FAST_FLOAT) 0.707106781); /* c4 */

-    dataptr[2] = tmp13 + z1;	/* phase 5 */

-    dataptr[6] = tmp13 - z1;

-    

-    /* Odd part */

-

-    tmp10 = tmp4 + tmp5;	/* phase 2 */

-    tmp11 = tmp5 + tmp6;

-    tmp12 = tmp6 + tmp7;

-

-    /* The rotator is modified from fig 4-8 to avoid extra negations. */

-    z5 = (tmp10 - tmp12) * ((FAST_FLOAT) 0.382683433); /* c6 */

-    z2 = ((FAST_FLOAT) 0.541196100) * tmp10 + z5; /* c2-c6 */

-    z4 = ((FAST_FLOAT) 1.306562965) * tmp12 + z5; /* c2+c6 */

-    z3 = tmp11 * ((FAST_FLOAT) 0.707106781); /* c4 */

-

-    z11 = tmp7 + z3;		/* phase 5 */

-    z13 = tmp7 - z3;

-

-    dataptr[5] = z13 + z2;	/* phase 6 */

-    dataptr[3] = z13 - z2;

-    dataptr[1] = z11 + z4;

-    dataptr[7] = z11 - z4;

-

-    dataptr += DCTSIZE;		/* advance pointer to next row */

-  }

-

-  /* Pass 2: process columns. */

-

-  dataptr = data;

-  for (ctr = DCTSIZE-1; ctr >= 0; ctr--) {

-    tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*7];

-    tmp7 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*7];

-    tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*6];

-    tmp6 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*6];

-    tmp2 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*5];

-    tmp5 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*5];

-    tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*4];

-    tmp4 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*4];

-    

-    /* Even part */

-    

-    tmp10 = tmp0 + tmp3;	/* phase 2 */

-    tmp13 = tmp0 - tmp3;

-    tmp11 = tmp1 + tmp2;

-    tmp12 = tmp1 - tmp2;

-    

-    dataptr[DCTSIZE*0] = tmp10 + tmp11; /* phase 3 */

-    dataptr[DCTSIZE*4] = tmp10 - tmp11;

-    

-    z1 = (tmp12 + tmp13) * ((FAST_FLOAT) 0.707106781); /* c4 */

-    dataptr[DCTSIZE*2] = tmp13 + z1; /* phase 5 */

-    dataptr[DCTSIZE*6] = tmp13 - z1;

-    

-    /* Odd part */

-

-    tmp10 = tmp4 + tmp5;	/* phase 2 */

-    tmp11 = tmp5 + tmp6;

-    tmp12 = tmp6 + tmp7;

-

-    /* The rotator is modified from fig 4-8 to avoid extra negations. */

-    z5 = (tmp10 - tmp12) * ((FAST_FLOAT) 0.382683433); /* c6 */

-    z2 = ((FAST_FLOAT) 0.541196100) * tmp10 + z5; /* c2-c6 */

-    z4 = ((FAST_FLOAT) 1.306562965) * tmp12 + z5; /* c2+c6 */

-    z3 = tmp11 * ((FAST_FLOAT) 0.707106781); /* c4 */

-

-    z11 = tmp7 + z3;		/* phase 5 */

-    z13 = tmp7 - z3;

-

-    dataptr[DCTSIZE*5] = z13 + z2; /* phase 6 */

-    dataptr[DCTSIZE*3] = z13 - z2;

-    dataptr[DCTSIZE*1] = z11 + z4;

-    dataptr[DCTSIZE*7] = z11 - z4;

-

-    dataptr++;			/* advance pointer to next column */

-  }

-}

-

-#endif /* DCT_FLOAT_SUPPORTED */

+/*
+ * jfdctflt.c
+ *
+ * Copyright (C) 1994, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains a floating-point implementation of the
+ * forward DCT (Discrete Cosine Transform).
+ *
+ * This implementation should be more accurate than either of the integer
+ * DCT implementations.  However, it may not give the same results on all
+ * machines because of differences in roundoff behavior.  Speed will depend
+ * on the hardware's floating point capacity.
+ *
+ * A 2-D DCT can be done by 1-D DCT on each row followed by 1-D DCT
+ * on each column.  Direct algorithms are also available, but they are
+ * much more complex and seem not to be any faster when reduced to code.
+ *
+ * This implementation is based on Arai, Agui, and Nakajima's algorithm for
+ * scaled DCT.  Their original paper (Trans. IEICE E-71(11):1095) is in
+ * Japanese, but the algorithm is described in the Pennebaker & Mitchell
+ * JPEG textbook (see REFERENCES section in file README).  The following code
+ * is based directly on figure 4-8 in P&M.
+ * While an 8-point DCT cannot be done in less than 11 multiplies, it is
+ * possible to arrange the computation so that many of the multiplies are
+ * simple scalings of the final outputs.  These multiplies can then be
+ * folded into the multiplications or divisions by the JPEG quantization
+ * table entries.  The AA&N method leaves only 5 multiplies and 29 adds
+ * to be done in the DCT itself.
+ * The primary disadvantage of this method is that with a fixed-point
+ * implementation, accuracy is lost due to imprecise representation of the
+ * scaled quantization values.  However, that problem does not arise if
+ * we use floating point arithmetic.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+#include "jdct.h"		/* Private declarations for DCT subsystem */
+
+#ifdef DCT_FLOAT_SUPPORTED
+
+
+/*
+ * This module is specialized to the case DCTSIZE = 8.
+ */
+
+#if DCTSIZE != 8
+  Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */
+#endif
+
+
+/*
+ * Perform the forward DCT on one block of samples.
+ */
+
+GLOBAL void
+jpeg_fdct_float (FAST_FLOAT * data)
+{
+  FAST_FLOAT tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
+  FAST_FLOAT tmp10, tmp11, tmp12, tmp13;
+  FAST_FLOAT z1, z2, z3, z4, z5, z11, z13;
+  FAST_FLOAT *dataptr;
+  int ctr;
+
+  /* Pass 1: process rows. */
+
+  dataptr = data;
+  for (ctr = DCTSIZE-1; ctr >= 0; ctr--) {
+    tmp0 = dataptr[0] + dataptr[7];
+    tmp7 = dataptr[0] - dataptr[7];
+    tmp1 = dataptr[1] + dataptr[6];
+    tmp6 = dataptr[1] - dataptr[6];
+    tmp2 = dataptr[2] + dataptr[5];
+    tmp5 = dataptr[2] - dataptr[5];
+    tmp3 = dataptr[3] + dataptr[4];
+    tmp4 = dataptr[3] - dataptr[4];
+    
+    /* Even part */
+    
+    tmp10 = tmp0 + tmp3;	/* phase 2 */
+    tmp13 = tmp0 - tmp3;
+    tmp11 = tmp1 + tmp2;
+    tmp12 = tmp1 - tmp2;
+    
+    dataptr[0] = tmp10 + tmp11; /* phase 3 */
+    dataptr[4] = tmp10 - tmp11;
+    
+    z1 = (tmp12 + tmp13) * ((FAST_FLOAT) 0.707106781); /* c4 */
+    dataptr[2] = tmp13 + z1;	/* phase 5 */
+    dataptr[6] = tmp13 - z1;
+    
+    /* Odd part */
+
+    tmp10 = tmp4 + tmp5;	/* phase 2 */
+    tmp11 = tmp5 + tmp6;
+    tmp12 = tmp6 + tmp7;
+
+    /* The rotator is modified from fig 4-8 to avoid extra negations. */
+    z5 = (tmp10 - tmp12) * ((FAST_FLOAT) 0.382683433); /* c6 */
+    z2 = ((FAST_FLOAT) 0.541196100) * tmp10 + z5; /* c2-c6 */
+    z4 = ((FAST_FLOAT) 1.306562965) * tmp12 + z5; /* c2+c6 */
+    z3 = tmp11 * ((FAST_FLOAT) 0.707106781); /* c4 */
+
+    z11 = tmp7 + z3;		/* phase 5 */
+    z13 = tmp7 - z3;
+
+    dataptr[5] = z13 + z2;	/* phase 6 */
+    dataptr[3] = z13 - z2;
+    dataptr[1] = z11 + z4;
+    dataptr[7] = z11 - z4;
+
+    dataptr += DCTSIZE;		/* advance pointer to next row */
+  }
+
+  /* Pass 2: process columns. */
+
+  dataptr = data;
+  for (ctr = DCTSIZE-1; ctr >= 0; ctr--) {
+    tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*7];
+    tmp7 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*7];
+    tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*6];
+    tmp6 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*6];
+    tmp2 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*5];
+    tmp5 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*5];
+    tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*4];
+    tmp4 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*4];
+    
+    /* Even part */
+    
+    tmp10 = tmp0 + tmp3;	/* phase 2 */
+    tmp13 = tmp0 - tmp3;
+    tmp11 = tmp1 + tmp2;
+    tmp12 = tmp1 - tmp2;
+    
+    dataptr[DCTSIZE*0] = tmp10 + tmp11; /* phase 3 */
+    dataptr[DCTSIZE*4] = tmp10 - tmp11;
+    
+    z1 = (tmp12 + tmp13) * ((FAST_FLOAT) 0.707106781); /* c4 */
+    dataptr[DCTSIZE*2] = tmp13 + z1; /* phase 5 */
+    dataptr[DCTSIZE*6] = tmp13 - z1;
+    
+    /* Odd part */
+
+    tmp10 = tmp4 + tmp5;	/* phase 2 */
+    tmp11 = tmp5 + tmp6;
+    tmp12 = tmp6 + tmp7;
+
+    /* The rotator is modified from fig 4-8 to avoid extra negations. */
+    z5 = (tmp10 - tmp12) * ((FAST_FLOAT) 0.382683433); /* c6 */
+    z2 = ((FAST_FLOAT) 0.541196100) * tmp10 + z5; /* c2-c6 */
+    z4 = ((FAST_FLOAT) 1.306562965) * tmp12 + z5; /* c2+c6 */
+    z3 = tmp11 * ((FAST_FLOAT) 0.707106781); /* c4 */
+
+    z11 = tmp7 + z3;		/* phase 5 */
+    z13 = tmp7 - z3;
+
+    dataptr[DCTSIZE*5] = z13 + z2; /* phase 6 */
+    dataptr[DCTSIZE*3] = z13 - z2;
+    dataptr[DCTSIZE*1] = z11 + z4;
+    dataptr[DCTSIZE*7] = z11 - z4;
+
+    dataptr++;			/* advance pointer to next column */
+  }
+}
+
+#endif /* DCT_FLOAT_SUPPORTED */
diff --git a/libs/jpeg6/jidctflt.cpp b/libs/jpeg6/jidctflt.cpp
index 2e25c44..847919e 100755
--- a/libs/jpeg6/jidctflt.cpp
+++ b/libs/jpeg6/jidctflt.cpp
@@ -1,241 +1,241 @@
-/*

- * jidctflt.c

- *

- * Copyright (C) 1994, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains a floating-point implementation of the

- * inverse DCT (Discrete Cosine Transform).  In the IJG code, this routine

- * must also perform dequantization of the input coefficients.

- *

- * This implementation should be more accurate than either of the integer

- * IDCT implementations.  However, it may not give the same results on all

- * machines because of differences in roundoff behavior.  Speed will depend

- * on the hardware's floating point capacity.

- *

- * A 2-D IDCT can be done by 1-D IDCT on each column followed by 1-D IDCT

- * on each row (or vice versa, but it's more convenient to emit a row at

- * a time).  Direct algorithms are also available, but they are much more

- * complex and seem not to be any faster when reduced to code.

- *

- * This implementation is based on Arai, Agui, and Nakajima's algorithm for

- * scaled DCT.  Their original paper (Trans. IEICE E-71(11):1095) is in

- * Japanese, but the algorithm is described in the Pennebaker & Mitchell

- * JPEG textbook (see REFERENCES section in file README).  The following code

- * is based directly on figure 4-8 in P&M.

- * While an 8-point DCT cannot be done in less than 11 multiplies, it is

- * possible to arrange the computation so that many of the multiplies are

- * simple scalings of the final outputs.  These multiplies can then be

- * folded into the multiplications or divisions by the JPEG quantization

- * table entries.  The AA&N method leaves only 5 multiplies and 29 adds

- * to be done in the DCT itself.

- * The primary disadvantage of this method is that with a fixed-point

- * implementation, accuracy is lost due to imprecise representation of the

- * scaled quantization values.  However, that problem does not arise if

- * we use floating point arithmetic.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-#include "jdct.h"		/* Private declarations for DCT subsystem */

-

-#ifdef DCT_FLOAT_SUPPORTED

-

-

-/*

- * This module is specialized to the case DCTSIZE = 8.

- */

-

-#if DCTSIZE != 8

-  Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */

-#endif

-

-

-/* Dequantize a coefficient by multiplying it by the multiplier-table

- * entry; produce a float result.

- */

-

-#define DEQUANTIZE(coef,quantval)  (((FAST_FLOAT) (coef)) * (quantval))

-

-

-/*

- * Perform dequantization and inverse DCT on one block of coefficients.

- */

-

-GLOBAL void

-jpeg_idct_float (j_decompress_ptr cinfo, jpeg_component_info * compptr,

-		 JCOEFPTR coef_block,

-		 JSAMPARRAY output_buf, JDIMENSION output_col)

-{

-  FAST_FLOAT tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;

-  FAST_FLOAT tmp10, tmp11, tmp12, tmp13;

-  FAST_FLOAT z5, z10, z11, z12, z13;

-  JCOEFPTR inptr;

-  FLOAT_MULT_TYPE * quantptr;

-  FAST_FLOAT * wsptr;

-  JSAMPROW outptr;

-  JSAMPLE *range_limit = IDCT_range_limit(cinfo);

-  int ctr;

-  FAST_FLOAT workspace[DCTSIZE2]; /* buffers data between passes */

-  SHIFT_TEMPS

-

-  /* Pass 1: process columns from input, store into work array. */

-

-  inptr = coef_block;

-  quantptr = (FLOAT_MULT_TYPE *) compptr->dct_table;

-  wsptr = workspace;

-  for (ctr = DCTSIZE; ctr > 0; ctr--) {

-    /* Due to quantization, we will usually find that many of the input

-     * coefficients are zero, especially the AC terms.  We can exploit this

-     * by short-circuiting the IDCT calculation for any column in which all

-     * the AC terms are zero.  In that case each output is equal to the

-     * DC coefficient (with scale factor as needed).

-     * With typical images and quantization tables, half or more of the

-     * column DCT calculations can be simplified this way.

-     */

-    

-    if ((inptr[DCTSIZE*1] | inptr[DCTSIZE*2] | inptr[DCTSIZE*3] |

-	 inptr[DCTSIZE*4] | inptr[DCTSIZE*5] | inptr[DCTSIZE*6] |

-	 inptr[DCTSIZE*7]) == 0) {

-      /* AC terms all zero */

-      FAST_FLOAT dcval = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]);

-      

-      wsptr[DCTSIZE*0] = dcval;

-      wsptr[DCTSIZE*1] = dcval;

-      wsptr[DCTSIZE*2] = dcval;

-      wsptr[DCTSIZE*3] = dcval;

-      wsptr[DCTSIZE*4] = dcval;

-      wsptr[DCTSIZE*5] = dcval;

-      wsptr[DCTSIZE*6] = dcval;

-      wsptr[DCTSIZE*7] = dcval;

-      

-      inptr++;			/* advance pointers to next column */

-      quantptr++;

-      wsptr++;

-      continue;

-    }

-    

-    /* Even part */

-

-    tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]);

-    tmp1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]);

-    tmp2 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]);

-    tmp3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]);

-

-    tmp10 = tmp0 + tmp2;	/* phase 3 */

-    tmp11 = tmp0 - tmp2;

-

-    tmp13 = tmp1 + tmp3;	/* phases 5-3 */

-    tmp12 = (tmp1 - tmp3) * ((FAST_FLOAT) 1.414213562) - tmp13; /* 2*c4 */

-

-    tmp0 = tmp10 + tmp13;	/* phase 2 */

-    tmp3 = tmp10 - tmp13;

-    tmp1 = tmp11 + tmp12;

-    tmp2 = tmp11 - tmp12;

-    

-    /* Odd part */

-

-    tmp4 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]);

-    tmp5 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]);

-    tmp6 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]);

-    tmp7 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]);

-

-    z13 = tmp6 + tmp5;		/* phase 6 */

-    z10 = tmp6 - tmp5;

-    z11 = tmp4 + tmp7;

-    z12 = tmp4 - tmp7;

-

-    tmp7 = z11 + z13;		/* phase 5 */

-    tmp11 = (z11 - z13) * ((FAST_FLOAT) 1.414213562); /* 2*c4 */

-

-    z5 = (z10 + z12) * ((FAST_FLOAT) 1.847759065); /* 2*c2 */

-    tmp10 = ((FAST_FLOAT) 1.082392200) * z12 - z5; /* 2*(c2-c6) */

-    tmp12 = ((FAST_FLOAT) -2.613125930) * z10 + z5; /* -2*(c2+c6) */

-

-    tmp6 = tmp12 - tmp7;	/* phase 2 */

-    tmp5 = tmp11 - tmp6;

-    tmp4 = tmp10 + tmp5;

-

-    wsptr[DCTSIZE*0] = tmp0 + tmp7;

-    wsptr[DCTSIZE*7] = tmp0 - tmp7;

-    wsptr[DCTSIZE*1] = tmp1 + tmp6;

-    wsptr[DCTSIZE*6] = tmp1 - tmp6;

-    wsptr[DCTSIZE*2] = tmp2 + tmp5;

-    wsptr[DCTSIZE*5] = tmp2 - tmp5;

-    wsptr[DCTSIZE*4] = tmp3 + tmp4;

-    wsptr[DCTSIZE*3] = tmp3 - tmp4;

-

-    inptr++;			/* advance pointers to next column */

-    quantptr++;

-    wsptr++;

-  }

-  

-  /* Pass 2: process rows from work array, store into output array. */

-  /* Note that we must descale the results by a factor of 8 == 2**3. */

-

-  wsptr = workspace;

-  for (ctr = 0; ctr < DCTSIZE; ctr++) {

-    outptr = output_buf[ctr] + output_col;

-    /* Rows of zeroes can be exploited in the same way as we did with columns.

-     * However, the column calculation has created many nonzero AC terms, so

-     * the simplification applies less often (typically 5% to 10% of the time).

-     * And testing floats for zero is relatively expensive, so we don't bother.

-     */

-    

-    /* Even part */

-

-    tmp10 = wsptr[0] + wsptr[4];

-    tmp11 = wsptr[0] - wsptr[4];

-

-    tmp13 = wsptr[2] + wsptr[6];

-    tmp12 = (wsptr[2] - wsptr[6]) * ((FAST_FLOAT) 1.414213562) - tmp13;

-

-    tmp0 = tmp10 + tmp13;

-    tmp3 = tmp10 - tmp13;

-    tmp1 = tmp11 + tmp12;

-    tmp2 = tmp11 - tmp12;

-

-    /* Odd part */

-

-    z13 = wsptr[5] + wsptr[3];

-    z10 = wsptr[5] - wsptr[3];

-    z11 = wsptr[1] + wsptr[7];

-    z12 = wsptr[1] - wsptr[7];

-

-    tmp7 = z11 + z13;

-    tmp11 = (z11 - z13) * ((FAST_FLOAT) 1.414213562);

-

-    z5 = (z10 + z12) * ((FAST_FLOAT) 1.847759065); /* 2*c2 */

-    tmp10 = ((FAST_FLOAT) 1.082392200) * z12 - z5; /* 2*(c2-c6) */

-    tmp12 = ((FAST_FLOAT) -2.613125930) * z10 + z5; /* -2*(c2+c6) */

-

-    tmp6 = tmp12 - tmp7;

-    tmp5 = tmp11 - tmp6;

-    tmp4 = tmp10 + tmp5;

-

-    /* Final output stage: scale down by a factor of 8 and range-limit */

-

-    outptr[0] = range_limit[(int) DESCALE((INT32) (tmp0 + tmp7), 3)

-			    & RANGE_MASK];

-    outptr[7] = range_limit[(int) DESCALE((INT32) (tmp0 - tmp7), 3)

-			    & RANGE_MASK];

-    outptr[1] = range_limit[(int) DESCALE((INT32) (tmp1 + tmp6), 3)

-			    & RANGE_MASK];

-    outptr[6] = range_limit[(int) DESCALE((INT32) (tmp1 - tmp6), 3)

-			    & RANGE_MASK];

-    outptr[2] = range_limit[(int) DESCALE((INT32) (tmp2 + tmp5), 3)

-			    & RANGE_MASK];

-    outptr[5] = range_limit[(int) DESCALE((INT32) (tmp2 - tmp5), 3)

-			    & RANGE_MASK];

-    outptr[4] = range_limit[(int) DESCALE((INT32) (tmp3 + tmp4), 3)

-			    & RANGE_MASK];

-    outptr[3] = range_limit[(int) DESCALE((INT32) (tmp3 - tmp4), 3)

-			    & RANGE_MASK];

-    

-    wsptr += DCTSIZE;		/* advance pointer to next row */

-  }

-}

-

-#endif /* DCT_FLOAT_SUPPORTED */

+/*
+ * jidctflt.c
+ *
+ * Copyright (C) 1994, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains a floating-point implementation of the
+ * inverse DCT (Discrete Cosine Transform).  In the IJG code, this routine
+ * must also perform dequantization of the input coefficients.
+ *
+ * This implementation should be more accurate than either of the integer
+ * IDCT implementations.  However, it may not give the same results on all
+ * machines because of differences in roundoff behavior.  Speed will depend
+ * on the hardware's floating point capacity.
+ *
+ * A 2-D IDCT can be done by 1-D IDCT on each column followed by 1-D IDCT
+ * on each row (or vice versa, but it's more convenient to emit a row at
+ * a time).  Direct algorithms are also available, but they are much more
+ * complex and seem not to be any faster when reduced to code.
+ *
+ * This implementation is based on Arai, Agui, and Nakajima's algorithm for
+ * scaled DCT.  Their original paper (Trans. IEICE E-71(11):1095) is in
+ * Japanese, but the algorithm is described in the Pennebaker & Mitchell
+ * JPEG textbook (see REFERENCES section in file README).  The following code
+ * is based directly on figure 4-8 in P&M.
+ * While an 8-point DCT cannot be done in less than 11 multiplies, it is
+ * possible to arrange the computation so that many of the multiplies are
+ * simple scalings of the final outputs.  These multiplies can then be
+ * folded into the multiplications or divisions by the JPEG quantization
+ * table entries.  The AA&N method leaves only 5 multiplies and 29 adds
+ * to be done in the DCT itself.
+ * The primary disadvantage of this method is that with a fixed-point
+ * implementation, accuracy is lost due to imprecise representation of the
+ * scaled quantization values.  However, that problem does not arise if
+ * we use floating point arithmetic.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+#include "jdct.h"		/* Private declarations for DCT subsystem */
+
+#ifdef DCT_FLOAT_SUPPORTED
+
+
+/*
+ * This module is specialized to the case DCTSIZE = 8.
+ */
+
+#if DCTSIZE != 8
+  Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */
+#endif
+
+
+/* Dequantize a coefficient by multiplying it by the multiplier-table
+ * entry; produce a float result.
+ */
+
+#define DEQUANTIZE(coef,quantval)  (((FAST_FLOAT) (coef)) * (quantval))
+
+
+/*
+ * Perform dequantization and inverse DCT on one block of coefficients.
+ */
+
+GLOBAL void
+jpeg_idct_float (j_decompress_ptr cinfo, jpeg_component_info * compptr,
+		 JCOEFPTR coef_block,
+		 JSAMPARRAY output_buf, JDIMENSION output_col)
+{
+  FAST_FLOAT tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
+  FAST_FLOAT tmp10, tmp11, tmp12, tmp13;
+  FAST_FLOAT z5, z10, z11, z12, z13;
+  JCOEFPTR inptr;
+  FLOAT_MULT_TYPE * quantptr;
+  FAST_FLOAT * wsptr;
+  JSAMPROW outptr;
+  JSAMPLE *range_limit = IDCT_range_limit(cinfo);
+  int ctr;
+  FAST_FLOAT workspace[DCTSIZE2]; /* buffers data between passes */
+  SHIFT_TEMPS
+
+  /* Pass 1: process columns from input, store into work array. */
+
+  inptr = coef_block;
+  quantptr = (FLOAT_MULT_TYPE *) compptr->dct_table;
+  wsptr = workspace;
+  for (ctr = DCTSIZE; ctr > 0; ctr--) {
+    /* Due to quantization, we will usually find that many of the input
+     * coefficients are zero, especially the AC terms.  We can exploit this
+     * by short-circuiting the IDCT calculation for any column in which all
+     * the AC terms are zero.  In that case each output is equal to the
+     * DC coefficient (with scale factor as needed).
+     * With typical images and quantization tables, half or more of the
+     * column DCT calculations can be simplified this way.
+     */
+    
+    if ((inptr[DCTSIZE*1] | inptr[DCTSIZE*2] | inptr[DCTSIZE*3] |
+	 inptr[DCTSIZE*4] | inptr[DCTSIZE*5] | inptr[DCTSIZE*6] |
+	 inptr[DCTSIZE*7]) == 0) {
+      /* AC terms all zero */
+      FAST_FLOAT dcval = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]);
+      
+      wsptr[DCTSIZE*0] = dcval;
+      wsptr[DCTSIZE*1] = dcval;
+      wsptr[DCTSIZE*2] = dcval;
+      wsptr[DCTSIZE*3] = dcval;
+      wsptr[DCTSIZE*4] = dcval;
+      wsptr[DCTSIZE*5] = dcval;
+      wsptr[DCTSIZE*6] = dcval;
+      wsptr[DCTSIZE*7] = dcval;
+      
+      inptr++;			/* advance pointers to next column */
+      quantptr++;
+      wsptr++;
+      continue;
+    }
+    
+    /* Even part */
+
+    tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]);
+    tmp1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]);
+    tmp2 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]);
+    tmp3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]);
+
+    tmp10 = tmp0 + tmp2;	/* phase 3 */
+    tmp11 = tmp0 - tmp2;
+
+    tmp13 = tmp1 + tmp3;	/* phases 5-3 */
+    tmp12 = (tmp1 - tmp3) * ((FAST_FLOAT) 1.414213562) - tmp13; /* 2*c4 */
+
+    tmp0 = tmp10 + tmp13;	/* phase 2 */
+    tmp3 = tmp10 - tmp13;
+    tmp1 = tmp11 + tmp12;
+    tmp2 = tmp11 - tmp12;
+    
+    /* Odd part */
+
+    tmp4 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]);
+    tmp5 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]);
+    tmp6 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]);
+    tmp7 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]);
+
+    z13 = tmp6 + tmp5;		/* phase 6 */
+    z10 = tmp6 - tmp5;
+    z11 = tmp4 + tmp7;
+    z12 = tmp4 - tmp7;
+
+    tmp7 = z11 + z13;		/* phase 5 */
+    tmp11 = (z11 - z13) * ((FAST_FLOAT) 1.414213562); /* 2*c4 */
+
+    z5 = (z10 + z12) * ((FAST_FLOAT) 1.847759065); /* 2*c2 */
+    tmp10 = ((FAST_FLOAT) 1.082392200) * z12 - z5; /* 2*(c2-c6) */
+    tmp12 = ((FAST_FLOAT) -2.613125930) * z10 + z5; /* -2*(c2+c6) */
+
+    tmp6 = tmp12 - tmp7;	/* phase 2 */
+    tmp5 = tmp11 - tmp6;
+    tmp4 = tmp10 + tmp5;
+
+    wsptr[DCTSIZE*0] = tmp0 + tmp7;
+    wsptr[DCTSIZE*7] = tmp0 - tmp7;
+    wsptr[DCTSIZE*1] = tmp1 + tmp6;
+    wsptr[DCTSIZE*6] = tmp1 - tmp6;
+    wsptr[DCTSIZE*2] = tmp2 + tmp5;
+    wsptr[DCTSIZE*5] = tmp2 - tmp5;
+    wsptr[DCTSIZE*4] = tmp3 + tmp4;
+    wsptr[DCTSIZE*3] = tmp3 - tmp4;
+
+    inptr++;			/* advance pointers to next column */
+    quantptr++;
+    wsptr++;
+  }
+  
+  /* Pass 2: process rows from work array, store into output array. */
+  /* Note that we must descale the results by a factor of 8 == 2**3. */
+
+  wsptr = workspace;
+  for (ctr = 0; ctr < DCTSIZE; ctr++) {
+    outptr = output_buf[ctr] + output_col;
+    /* Rows of zeroes can be exploited in the same way as we did with columns.
+     * However, the column calculation has created many nonzero AC terms, so
+     * the simplification applies less often (typically 5% to 10% of the time).
+     * And testing floats for zero is relatively expensive, so we don't bother.
+     */
+    
+    /* Even part */
+
+    tmp10 = wsptr[0] + wsptr[4];
+    tmp11 = wsptr[0] - wsptr[4];
+
+    tmp13 = wsptr[2] + wsptr[6];
+    tmp12 = (wsptr[2] - wsptr[6]) * ((FAST_FLOAT) 1.414213562) - tmp13;
+
+    tmp0 = tmp10 + tmp13;
+    tmp3 = tmp10 - tmp13;
+    tmp1 = tmp11 + tmp12;
+    tmp2 = tmp11 - tmp12;
+
+    /* Odd part */
+
+    z13 = wsptr[5] + wsptr[3];
+    z10 = wsptr[5] - wsptr[3];
+    z11 = wsptr[1] + wsptr[7];
+    z12 = wsptr[1] - wsptr[7];
+
+    tmp7 = z11 + z13;
+    tmp11 = (z11 - z13) * ((FAST_FLOAT) 1.414213562);
+
+    z5 = (z10 + z12) * ((FAST_FLOAT) 1.847759065); /* 2*c2 */
+    tmp10 = ((FAST_FLOAT) 1.082392200) * z12 - z5; /* 2*(c2-c6) */
+    tmp12 = ((FAST_FLOAT) -2.613125930) * z10 + z5; /* -2*(c2+c6) */
+
+    tmp6 = tmp12 - tmp7;
+    tmp5 = tmp11 - tmp6;
+    tmp4 = tmp10 + tmp5;
+
+    /* Final output stage: scale down by a factor of 8 and range-limit */
+
+    outptr[0] = range_limit[(int) DESCALE((INT32) (tmp0 + tmp7), 3)
+			    & RANGE_MASK];
+    outptr[7] = range_limit[(int) DESCALE((INT32) (tmp0 - tmp7), 3)
+			    & RANGE_MASK];
+    outptr[1] = range_limit[(int) DESCALE((INT32) (tmp1 + tmp6), 3)
+			    & RANGE_MASK];
+    outptr[6] = range_limit[(int) DESCALE((INT32) (tmp1 - tmp6), 3)
+			    & RANGE_MASK];
+    outptr[2] = range_limit[(int) DESCALE((INT32) (tmp2 + tmp5), 3)
+			    & RANGE_MASK];
+    outptr[5] = range_limit[(int) DESCALE((INT32) (tmp2 - tmp5), 3)
+			    & RANGE_MASK];
+    outptr[4] = range_limit[(int) DESCALE((INT32) (tmp3 + tmp4), 3)
+			    & RANGE_MASK];
+    outptr[3] = range_limit[(int) DESCALE((INT32) (tmp3 - tmp4), 3)
+			    & RANGE_MASK];
+    
+    wsptr += DCTSIZE;		/* advance pointer to next row */
+  }
+}
+
+#endif /* DCT_FLOAT_SUPPORTED */
diff --git a/libs/jpeg6/jinclude.h b/libs/jpeg6/jinclude.h
index 5ff60fe..0a4f151 100755
--- a/libs/jpeg6/jinclude.h
+++ b/libs/jpeg6/jinclude.h
@@ -1,91 +1,91 @@
-/*

- * jinclude.h

- *

- * Copyright (C) 1991-1994, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file exists to provide a single place to fix any problems with

- * including the wrong system include files.  (Common problems are taken

- * care of by the standard jconfig symbols, but on really weird systems

- * you may have to edit this file.)

- *

- * NOTE: this file is NOT intended to be included by applications using the

- * JPEG library.  Most applications need only include jpeglib.h.

- */

-

-

-/* Include auto-config file to find out which system include files we need. */

-

-#include "jconfig.h"		/* auto configuration options */

-#define JCONFIG_INCLUDED	/* so that jpeglib.h doesn't do it again */

-

-/*

- * We need the NULL macro and size_t typedef.

- * On an ANSI-conforming system it is sufficient to include <stddef.h>.

- * Otherwise, we get them from <stdlib.h> or <stdio.h>; we may have to

- * pull in <sys/types.h> as well.

- * Note that the core JPEG library does not require <stdio.h>;

- * only the default error handler and data source/destination modules do.

- * But we must pull it in because of the references to FILE in jpeglib.h.

- * You can remove those references if you want to compile without <stdio.h>.

- */

-

-#ifdef HAVE_STDDEF_H

-#include <stddef.h>

-#endif

-

-#ifdef HAVE_STDLIB_H

-#include <stdlib.h>

-#endif

-

-#ifdef NEED_SYS_TYPES_H

-#include <sys/types.h>

-#endif

-

-#include <stdio.h>

-

-/*

- * We need memory copying and zeroing functions, plus strncpy().

- * ANSI and System V implementations declare these in <string.h>.

- * BSD doesn't have the mem() functions, but it does have bcopy()/bzero().

- * Some systems may declare memset and memcpy in <memory.h>.

- *

- * NOTE: we assume the size parameters to these functions are of type size_t.

- * Change the casts in these macros if not!

- */

-

-#ifdef NEED_BSD_STRINGS

-

-#include <strings.h>

-#define MEMZERO(target,size)	bzero((void *)(target), (size_t)(size))

-#define MEMCOPY(dest,src,size)	bcopy((const void *)(src), (void *)(dest), (size_t)(size))

-

-#else /* not BSD, assume ANSI/SysV string lib */

-

-#include <string.h>

-#define MEMZERO(target,size)	memset((void *)(target), 0, (size_t)(size))

-#define MEMCOPY(dest,src,size)	memcpy((void *)(dest), (const void *)(src), (size_t)(size))

-

-#endif

-

-/*

- * In ANSI C, and indeed any rational implementation, size_t is also the

- * type returned by sizeof().  However, it seems there are some irrational

- * implementations out there, in which sizeof() returns an int even though

- * size_t is defined as long or unsigned long.  To ensure consistent results

- * we always use this SIZEOF() macro in place of using sizeof() directly.

- */

-

-#define SIZEOF(object)	((size_t) sizeof(object))

-

-/*

- * The modules that use fread() and fwrite() always invoke them through

- * these macros.  On some systems you may need to twiddle the argument casts.

- * CAUTION: argument order is different from underlying functions!

- */

-

-#define JFREAD(file,buf,sizeofbuf)  \

-  ((size_t) fread((void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file)))

-#define JFWRITE(file,buf,sizeofbuf)  \

-  ((size_t) fwrite((const void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file)))

+/*
+ * jinclude.h
+ *
+ * Copyright (C) 1991-1994, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file exists to provide a single place to fix any problems with
+ * including the wrong system include files.  (Common problems are taken
+ * care of by the standard jconfig symbols, but on really weird systems
+ * you may have to edit this file.)
+ *
+ * NOTE: this file is NOT intended to be included by applications using the
+ * JPEG library.  Most applications need only include jpeglib.h.
+ */
+
+
+/* Include auto-config file to find out which system include files we need. */
+
+#include "jconfig.h"		/* auto configuration options */
+#define JCONFIG_INCLUDED	/* so that jpeglib.h doesn't do it again */
+
+/*
+ * We need the NULL macro and size_t typedef.
+ * On an ANSI-conforming system it is sufficient to include <stddef.h>.
+ * Otherwise, we get them from <stdlib.h> or <stdio.h>; we may have to
+ * pull in <sys/types.h> as well.
+ * Note that the core JPEG library does not require <stdio.h>;
+ * only the default error handler and data source/destination modules do.
+ * But we must pull it in because of the references to FILE in jpeglib.h.
+ * You can remove those references if you want to compile without <stdio.h>.
+ */
+
+#ifdef HAVE_STDDEF_H
+#include <stddef.h>
+#endif
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#ifdef NEED_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#include <stdio.h>
+
+/*
+ * We need memory copying and zeroing functions, plus strncpy().
+ * ANSI and System V implementations declare these in <string.h>.
+ * BSD doesn't have the mem() functions, but it does have bcopy()/bzero().
+ * Some systems may declare memset and memcpy in <memory.h>.
+ *
+ * NOTE: we assume the size parameters to these functions are of type size_t.
+ * Change the casts in these macros if not!
+ */
+
+#ifdef NEED_BSD_STRINGS
+
+#include <strings.h>
+#define MEMZERO(target,size)	bzero((void *)(target), (size_t)(size))
+#define MEMCOPY(dest,src,size)	bcopy((const void *)(src), (void *)(dest), (size_t)(size))
+
+#else /* not BSD, assume ANSI/SysV string lib */
+
+#include <string.h>
+#define MEMZERO(target,size)	memset((void *)(target), 0, (size_t)(size))
+#define MEMCOPY(dest,src,size)	memcpy((void *)(dest), (const void *)(src), (size_t)(size))
+
+#endif
+
+/*
+ * In ANSI C, and indeed any rational implementation, size_t is also the
+ * type returned by sizeof().  However, it seems there are some irrational
+ * implementations out there, in which sizeof() returns an int even though
+ * size_t is defined as long or unsigned long.  To ensure consistent results
+ * we always use this SIZEOF() macro in place of using sizeof() directly.
+ */
+
+#define SIZEOF(object)	((size_t) sizeof(object))
+
+/*
+ * The modules that use fread() and fwrite() always invoke them through
+ * these macros.  On some systems you may need to twiddle the argument casts.
+ * CAUTION: argument order is different from underlying functions!
+ */
+
+#define JFREAD(file,buf,sizeofbuf)  \
+  ((size_t) fread((void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file)))
+#define JFWRITE(file,buf,sizeofbuf)  \
+  ((size_t) fwrite((const void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file)))
diff --git a/libs/jpeg6/jmemmgr.cpp b/libs/jpeg6/jmemmgr.cpp
index 61045f9..dc3e1c7 100755
--- a/libs/jpeg6/jmemmgr.cpp
+++ b/libs/jpeg6/jmemmgr.cpp
@@ -1,1115 +1,1115 @@
-/*

- * jmemmgr.c

- *

- * Copyright (C) 1991-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains the JPEG system-independent memory management

- * routines.  This code is usable across a wide variety of machines; most

- * of the system dependencies have been isolated in a separate file.

- * The major functions provided here are:

- *   * pool-based allocation and freeing of memory;

- *   * policy decisions about how to divide available memory among the

- *     virtual arrays;

- *   * control logic for swapping virtual arrays between main memory and

- *     backing storage.

- * The separate system-dependent file provides the actual backing-storage

- * access code, and it contains the policy decision about how much total

- * main memory to use.

- * This file is system-dependent in the sense that some of its functions

- * are unnecessary in some systems.  For example, if there is enough virtual

- * memory so that backing storage will never be used, much of the virtual

- * array control logic could be removed.  (Of course, if you have that much

- * memory then you shouldn't care about a little bit of unused code...)

- */

-

-#define JPEG_INTERNALS

-#define AM_MEMORY_MANAGER	/* we define jvirt_Xarray_control structs */

-#include "jinclude.h"

-#include "jpeglib.h"

-#include "jmemsys.h"		/* import the system-dependent declarations */

-

-#ifndef NO_GETENV

-#ifndef HAVE_STDLIB_H		/* <stdlib.h> should declare getenv() */

-extern char * getenv JPP((const char * name));

-#endif

-#endif

-

-

-/*

- * Some important notes:

- *   The allocation routines provided here must never return NULL.

- *   They should exit to error_exit if unsuccessful.

- *

- *   It's not a good idea to try to merge the sarray and barray routines,

- *   even though they are textually almost the same, because samples are

- *   usually stored as bytes while coefficients are shorts or ints.  Thus,

- *   in machines where byte pointers have a different representation from

- *   word pointers, the resulting machine code could not be the same.

- */

-

-

-/*

- * Many machines require storage alignment: longs must start on 4-byte

- * boundaries, doubles on 8-byte boundaries, etc.  On such machines, malloc()

- * always returns pointers that are multiples of the worst-case alignment

- * requirement, and we had better do so too.

- * There isn't any really portable way to determine the worst-case alignment

- * requirement.  This module assumes that the alignment requirement is

- * multiples of sizeof(ALIGN_TYPE).

- * By default, we define ALIGN_TYPE as double.  This is necessary on some

- * workstations (where doubles really do need 8-byte alignment) and will work

- * fine on nearly everything.  If your machine has lesser alignment needs,

- * you can save a few bytes by making ALIGN_TYPE smaller.

- * The only place I know of where this will NOT work is certain Macintosh

- * 680x0 compilers that define double as a 10-byte IEEE extended float.

- * Doing 10-byte alignment is counterproductive because longwords won't be

- * aligned well.  Put "#define ALIGN_TYPE long" in jconfig.h if you have

- * such a compiler.

- */

-

-#ifndef ALIGN_TYPE		/* so can override from jconfig.h */

-#define ALIGN_TYPE  double

-#endif

-

-

-/*

- * We allocate objects from "pools", where each pool is gotten with a single

- * request to jpeg_get_small() or jpeg_get_large().  There is no per-object

- * overhead within a pool, except for alignment padding.  Each pool has a

- * header with a link to the next pool of the same class.

- * Small and large pool headers are identical except that the latter's

- * link pointer must be FAR on 80x86 machines.

- * Notice that the "real" header fields are union'ed with a dummy ALIGN_TYPE

- * field.  This forces the compiler to make SIZEOF(small_pool_hdr) a multiple

- * of the alignment requirement of ALIGN_TYPE.

- */

-

-typedef union small_pool_struct * small_pool_ptr;

-

-typedef union small_pool_struct {

-  struct {

-    small_pool_ptr next;	/* next in list of pools */

-    size_t bytes_used;		/* how many bytes already used within pool */

-    size_t bytes_left;		/* bytes still available in this pool */

-  } hdr;

-  ALIGN_TYPE dummy;		/* included in union to ensure alignment */

-} small_pool_hdr;

-

-typedef union large_pool_struct FAR * large_pool_ptr;

-

-typedef union large_pool_struct {

-  struct {

-    large_pool_ptr next;	/* next in list of pools */

-    size_t bytes_used;		/* how many bytes already used within pool */

-    size_t bytes_left;		/* bytes still available in this pool */

-  } hdr;

-  ALIGN_TYPE dummy;		/* included in union to ensure alignment */

-} large_pool_hdr;

-

-

-/*

- * Here is the full definition of a memory manager object.

- */

-

-typedef struct {

-  struct jpeg_memory_mgr pub;	/* public fields */

-

-  /* Each pool identifier (lifetime class) names a linked list of pools. */

-  small_pool_ptr small_list[JPOOL_NUMPOOLS];

-  large_pool_ptr large_list[JPOOL_NUMPOOLS];

-

-  /* Since we only have one lifetime class of virtual arrays, only one

-   * linked list is necessary (for each datatype).  Note that the virtual

-   * array control blocks being linked together are actually stored somewhere

-   * in the small-pool list.

-   */

-  jvirt_sarray_ptr virt_sarray_list;

-  jvirt_barray_ptr virt_barray_list;

-

-  /* This counts total space obtained from jpeg_get_small/large */

-  long total_space_allocated;

-

-  /* alloc_sarray and alloc_barray set this value for use by virtual

-   * array routines.

-   */

-  JDIMENSION last_rowsperchunk;	/* from most recent alloc_sarray/barray */

-} my_memory_mgr;

-

-typedef my_memory_mgr * my_mem_ptr;

-

-

-/*

- * The control blocks for virtual arrays.

- * Note that these blocks are allocated in the "small" pool area.

- * System-dependent info for the associated backing store (if any) is hidden

- * inside the backing_store_info struct.

- */

-

-struct jvirt_sarray_control {

-  JSAMPARRAY mem_buffer;	/* => the in-memory buffer */

-  JDIMENSION rows_in_array;	/* total virtual array height */

-  JDIMENSION samplesperrow;	/* width of array (and of memory buffer) */

-  JDIMENSION maxaccess;		/* max rows accessed by access_virt_sarray */

-  JDIMENSION rows_in_mem;	/* height of memory buffer */

-  JDIMENSION rowsperchunk;	/* allocation chunk size in mem_buffer */

-  JDIMENSION cur_start_row;	/* first logical row # in the buffer */

-  JDIMENSION first_undef_row;	/* row # of first uninitialized row */

-  boolean pre_zero;		/* pre-zero mode requested? */

-  boolean dirty;		/* do current buffer contents need written? */

-  boolean b_s_open;		/* is backing-store data valid? */

-  jvirt_sarray_ptr next;	/* link to next virtual sarray control block */

-  backing_store_info b_s_info;	/* System-dependent control info */

-};

-

-struct jvirt_barray_control {

-  JBLOCKARRAY mem_buffer;	/* => the in-memory buffer */

-  JDIMENSION rows_in_array;	/* total virtual array height */

-  JDIMENSION blocksperrow;	/* width of array (and of memory buffer) */

-  JDIMENSION maxaccess;		/* max rows accessed by access_virt_barray */

-  JDIMENSION rows_in_mem;	/* height of memory buffer */

-  JDIMENSION rowsperchunk;	/* allocation chunk size in mem_buffer */

-  JDIMENSION cur_start_row;	/* first logical row # in the buffer */

-  JDIMENSION first_undef_row;	/* row # of first uninitialized row */

-  boolean pre_zero;		/* pre-zero mode requested? */

-  boolean dirty;		/* do current buffer contents need written? */

-  boolean b_s_open;		/* is backing-store data valid? */

-  jvirt_barray_ptr next;	/* link to next virtual barray control block */

-  backing_store_info b_s_info;	/* System-dependent control info */

-};

-

-

-#ifdef MEM_STATS		/* optional extra stuff for statistics */

-

-LOCAL void

-print_mem_stats (j_common_ptr cinfo, int pool_id)

-{

-  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;

-  small_pool_ptr shdr_ptr;

-  large_pool_ptr lhdr_ptr;

-

-  /* Since this is only a debugging stub, we can cheat a little by using

-   * fprintf directly rather than going through the trace message code.

-   * This is helpful because message parm array can't handle longs.

-   */

-  fprintf(stderr, "Freeing pool %d, total space = %ld\n",

-	  pool_id, mem->total_space_allocated);

-

-  for (lhdr_ptr = mem->large_list[pool_id]; lhdr_ptr != NULL;

-       lhdr_ptr = lhdr_ptr->hdr.next) {

-    fprintf(stderr, "  Large chunk used %ld\n",

-	    (long) lhdr_ptr->hdr.bytes_used);

-  }

-

-  for (shdr_ptr = mem->small_list[pool_id]; shdr_ptr != NULL;

-       shdr_ptr = shdr_ptr->hdr.next) {

-    fprintf(stderr, "  Small chunk used %ld free %ld\n",

-	    (long) shdr_ptr->hdr.bytes_used,

-	    (long) shdr_ptr->hdr.bytes_left);

-  }

-}

-

-#endif /* MEM_STATS */

-

-

-LOCAL void

-out_of_memory (j_common_ptr cinfo, int which)

-/* Report an out-of-memory error and stop execution */

-/* If we compiled MEM_STATS support, report alloc requests before dying */

-{

-#ifdef MEM_STATS

-  cinfo->err->trace_level = 2;	/* force self_destruct to report stats */

-#endif

-  ERREXIT1(cinfo, JERR_OUT_OF_MEMORY, which);

-}

-

-

-/*

- * Allocation of "small" objects.

- *

- * For these, we use pooled storage.  When a new pool must be created,

- * we try to get enough space for the current request plus a "slop" factor,

- * where the slop will be the amount of leftover space in the new pool.

- * The speed vs. space tradeoff is largely determined by the slop values.

- * A different slop value is provided for each pool class (lifetime),

- * and we also distinguish the first pool of a class from later ones.

- * NOTE: the values given work fairly well on both 16- and 32-bit-int

- * machines, but may be too small if longs are 64 bits or more.

- */

-

-static const size_t first_pool_slop[JPOOL_NUMPOOLS] = 

-{

-	1600,			/* first PERMANENT pool */

-	16000			/* first IMAGE pool */

-};

-

-static const size_t extra_pool_slop[JPOOL_NUMPOOLS] = 

-{

-	0,			/* additional PERMANENT pools */

-	5000			/* additional IMAGE pools */

-};

-

-#define MIN_SLOP  50		/* greater than 0 to avoid futile looping */

-

-

-METHODDEF void *

-alloc_small (j_common_ptr cinfo, int pool_id, size_t sizeofobject)

-/* Allocate a "small" object */

-{

-  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;

-  small_pool_ptr hdr_ptr, prev_hdr_ptr;

-  char * data_ptr;

-  size_t odd_bytes, min_request, slop;

-

-  /* Check for unsatisfiable request (do now to ensure no overflow below) */

-  if (sizeofobject > (size_t) (MAX_ALLOC_CHUNK-SIZEOF(small_pool_hdr)))

-    out_of_memory(cinfo, 1);	/* request exceeds malloc's ability */

-

-  /* Round up the requested size to a multiple of SIZEOF(ALIGN_TYPE) */

-  odd_bytes = sizeofobject % SIZEOF(ALIGN_TYPE);

-  if (odd_bytes > 0)

-    sizeofobject += SIZEOF(ALIGN_TYPE) - odd_bytes;

-

-  /* See if space is available in any existing pool */

-  if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS)

-    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id);	/* safety check */

-  prev_hdr_ptr = NULL;

-  hdr_ptr = mem->small_list[pool_id];

-  while (hdr_ptr != NULL) {

-    if (hdr_ptr->hdr.bytes_left >= sizeofobject)

-      break;			/* found pool with enough space */

-    prev_hdr_ptr = hdr_ptr;

-    hdr_ptr = hdr_ptr->hdr.next;

-  }

-

-  /* Time to make a new pool? */

-  if (hdr_ptr == NULL) {

-    /* min_request is what we need now, slop is what will be leftover */

-    min_request = sizeofobject + SIZEOF(small_pool_hdr);

-    if (prev_hdr_ptr == NULL)	/* first pool in class? */

-      slop = first_pool_slop[pool_id];

-    else

-      slop = extra_pool_slop[pool_id];

-    /* Don't ask for more than MAX_ALLOC_CHUNK */

-    if (slop > (size_t) (MAX_ALLOC_CHUNK-min_request))

-      slop = (size_t) (MAX_ALLOC_CHUNK-min_request);

-    /* Try to get space, if fail reduce slop and try again */

-    for (;;) {

-      hdr_ptr = (small_pool_ptr) jpeg_get_small(cinfo, min_request + slop);

-      if (hdr_ptr != NULL)

-	break;

-      slop /= 2;

-      if (slop < MIN_SLOP)	/* give up when it gets real small */

-	out_of_memory(cinfo, 2); /* jpeg_get_small failed */

-    }

-    mem->total_space_allocated += min_request + slop;

-    /* Success, initialize the new pool header and add to end of list */

-    hdr_ptr->hdr.next = NULL;

-    hdr_ptr->hdr.bytes_used = 0;

-    hdr_ptr->hdr.bytes_left = sizeofobject + slop;

-    if (prev_hdr_ptr == NULL)	/* first pool in class? */

-      mem->small_list[pool_id] = hdr_ptr;

-    else

-      prev_hdr_ptr->hdr.next = hdr_ptr;

-  }

-

-  /* OK, allocate the object from the current pool */

-  data_ptr = (char *) (hdr_ptr + 1); /* point to first data byte in pool */

-  data_ptr += hdr_ptr->hdr.bytes_used; /* point to place for object */

-  hdr_ptr->hdr.bytes_used += sizeofobject;

-  hdr_ptr->hdr.bytes_left -= sizeofobject;

-

-  return (void *) data_ptr;

-}

-

-

-/*

- * Allocation of "large" objects.

- *

- * The external semantics of these are the same as "small" objects,

- * except that FAR pointers are used on 80x86.  However the pool

- * management heuristics are quite different.  We assume that each

- * request is large enough that it may as well be passed directly to

- * jpeg_get_large; the pool management just links everything together

- * so that we can free it all on demand.

- * Note: the major use of "large" objects is in JSAMPARRAY and JBLOCKARRAY

- * structures.  The routines that create these structures (see below)

- * deliberately bunch rows together to ensure a large request size.

- */

-

-METHODDEF void FAR *

-alloc_large (j_common_ptr cinfo, int pool_id, size_t sizeofobject)

-/* Allocate a "large" object */

-{

-  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;

-  large_pool_ptr hdr_ptr;

-  size_t odd_bytes;

-

-  /* Check for unsatisfiable request (do now to ensure no overflow below) */

-  if (sizeofobject > (size_t) (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)))

-    out_of_memory(cinfo, 3);	/* request exceeds malloc's ability */

-

-  /* Round up the requested size to a multiple of SIZEOF(ALIGN_TYPE) */

-  odd_bytes = sizeofobject % SIZEOF(ALIGN_TYPE);

-  if (odd_bytes > 0)

-    sizeofobject += SIZEOF(ALIGN_TYPE) - odd_bytes;

-

-  /* Always make a new pool */

-  if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS)

-    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id);	/* safety check */

-

-  hdr_ptr = (large_pool_ptr) jpeg_get_large(cinfo, sizeofobject +

-					    SIZEOF(large_pool_hdr));

-  if (hdr_ptr == NULL)

-    out_of_memory(cinfo, 4);	/* jpeg_get_large failed */

-  mem->total_space_allocated += sizeofobject + SIZEOF(large_pool_hdr);

-

-  /* Success, initialize the new pool header and add to list */

-  hdr_ptr->hdr.next = mem->large_list[pool_id];

-  /* We maintain space counts in each pool header for statistical purposes,

-   * even though they are not needed for allocation.

-   */

-  hdr_ptr->hdr.bytes_used = sizeofobject;

-  hdr_ptr->hdr.bytes_left = 0;

-  mem->large_list[pool_id] = hdr_ptr;

-

-  return (void FAR *) (hdr_ptr + 1); /* point to first data byte in pool */

-}

-

-

-/*

- * Creation of 2-D sample arrays.

- * The pointers are in near heap, the samples themselves in FAR heap.

- *

- * To minimize allocation overhead and to allow I/O of large contiguous

- * blocks, we allocate the sample rows in groups of as many rows as possible

- * without exceeding MAX_ALLOC_CHUNK total bytes per allocation request.

- * NB: the virtual array control routines, later in this file, know about

- * this chunking of rows.  The rowsperchunk value is left in the mem manager

- * object so that it can be saved away if this sarray is the workspace for

- * a virtual array.

- */

-

-METHODDEF JSAMPARRAY

-alloc_sarray (j_common_ptr cinfo, int pool_id,

-	      JDIMENSION samplesperrow, JDIMENSION numrows)

-/* Allocate a 2-D sample array */

-{

-  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;

-  JSAMPARRAY result;

-  JSAMPROW workspace;

-  JDIMENSION rowsperchunk, currow, i;

-  long ltemp;

-

-  /* Calculate max # of rows allowed in one allocation chunk */

-  ltemp = (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)) /

-	  ((long) samplesperrow * SIZEOF(JSAMPLE));

-  if (ltemp <= 0)

-    ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);

-  if (ltemp < (long) numrows)

-    rowsperchunk = (JDIMENSION) ltemp;

-  else

-    rowsperchunk = numrows;

-  mem->last_rowsperchunk = rowsperchunk;

-

-  /* Get space for row pointers (small object) */

-  result = (JSAMPARRAY) alloc_small(cinfo, pool_id,

-				    (size_t) (numrows * SIZEOF(JSAMPROW)));

-

-  /* Get the rows themselves (large objects) */

-  currow = 0;

-  while (currow < numrows) {

-    rowsperchunk = MIN(rowsperchunk, numrows - currow);

-    workspace = (JSAMPROW) alloc_large(cinfo, pool_id,

-	(size_t) ((size_t) rowsperchunk * (size_t) samplesperrow

-		  * SIZEOF(JSAMPLE)));

-    for (i = rowsperchunk; i > 0; i--) {

-      result[currow++] = workspace;

-      workspace += samplesperrow;

-    }

-  }

-

-  return result;

-}

-

-

-/*

- * Creation of 2-D coefficient-block arrays.

- * This is essentially the same as the code for sample arrays, above.

- */

-

-METHODDEF JBLOCKARRAY

-alloc_barray (j_common_ptr cinfo, int pool_id,

-	      JDIMENSION blocksperrow, JDIMENSION numrows)

-/* Allocate a 2-D coefficient-block array */

-{

-  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;

-  JBLOCKARRAY result;

-  JBLOCKROW workspace;

-  JDIMENSION rowsperchunk, currow, i;

-  long ltemp;

-

-  /* Calculate max # of rows allowed in one allocation chunk */

-  ltemp = (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)) /

-	  ((long) blocksperrow * SIZEOF(JBLOCK));

-  if (ltemp <= 0)

-    ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);

-  if (ltemp < (long) numrows)

-    rowsperchunk = (JDIMENSION) ltemp;

-  else

-    rowsperchunk = numrows;

-  mem->last_rowsperchunk = rowsperchunk;

-

-  /* Get space for row pointers (small object) */

-  result = (JBLOCKARRAY) alloc_small(cinfo, pool_id,

-				     (size_t) (numrows * SIZEOF(JBLOCKROW)));

-

-  /* Get the rows themselves (large objects) */

-  currow = 0;

-  while (currow < numrows) {

-    rowsperchunk = MIN(rowsperchunk, numrows - currow);

-    workspace = (JBLOCKROW) alloc_large(cinfo, pool_id,

-	(size_t) ((size_t) rowsperchunk * (size_t) blocksperrow

-		  * SIZEOF(JBLOCK)));

-    for (i = rowsperchunk; i > 0; i--) {

-      result[currow++] = workspace;

-      workspace += blocksperrow;

-    }

-  }

-

-  return result;

-}

-

-

-/*

- * About virtual array management:

- *

- * The above "normal" array routines are only used to allocate strip buffers

- * (as wide as the image, but just a few rows high).  Full-image-sized buffers

- * are handled as "virtual" arrays.  The array is still accessed a strip at a

- * time, but the memory manager must save the whole array for repeated

- * accesses.  The intended implementation is that there is a strip buffer in

- * memory (as high as is possible given the desired memory limit), plus a

- * backing file that holds the rest of the array.

- *

- * The request_virt_array routines are told the total size of the image and

- * the maximum number of rows that will be accessed at once.  The in-memory

- * buffer must be at least as large as the maxaccess value.

- *

- * The request routines create control blocks but not the in-memory buffers.

- * That is postponed until realize_virt_arrays is called.  At that time the

- * total amount of space needed is known (approximately, anyway), so free

- * memory can be divided up fairly.

- *

- * The access_virt_array routines are responsible for making a specific strip

- * area accessible (after reading or writing the backing file, if necessary).

- * Note that the access routines are told whether the caller intends to modify

- * the accessed strip; during a read-only pass this saves having to rewrite

- * data to disk.  The access routines are also responsible for pre-zeroing

- * any newly accessed rows, if pre-zeroing was requested.

- *

- * In current usage, the access requests are usually for nonoverlapping

- * strips; that is, successive access start_row numbers differ by exactly

- * num_rows = maxaccess.  This means we can get good performance with simple

- * buffer dump/reload logic, by making the in-memory buffer be a multiple

- * of the access height; then there will never be accesses across bufferload

- * boundaries.  The code will still work with overlapping access requests,

- * but it doesn't handle bufferload overlaps very efficiently.

- */

-

-

-METHODDEF jvirt_sarray_ptr

-request_virt_sarray (j_common_ptr cinfo, int pool_id, boolean pre_zero,

-		     JDIMENSION samplesperrow, JDIMENSION numrows,

-		     JDIMENSION maxaccess)

-/* Request a virtual 2-D sample array */

-{

-  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;

-  jvirt_sarray_ptr result;

-

-  /* Only IMAGE-lifetime virtual arrays are currently supported */

-  if (pool_id != JPOOL_IMAGE)

-    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id);	/* safety check */

-

-  /* get control block */

-  result = (jvirt_sarray_ptr) alloc_small(cinfo, pool_id,

-					  SIZEOF(struct jvirt_sarray_control));

-

-  result->mem_buffer = NULL;	/* marks array not yet realized */

-  result->rows_in_array = numrows;

-  result->samplesperrow = samplesperrow;

-  result->maxaccess = maxaccess;

-  result->pre_zero = pre_zero;

-  result->b_s_open = FALSE;	/* no associated backing-store object */

-  result->next = mem->virt_sarray_list; /* add to list of virtual arrays */

-  mem->virt_sarray_list = result;

-

-  return result;

-}

-

-

-METHODDEF jvirt_barray_ptr

-request_virt_barray (j_common_ptr cinfo, int pool_id, boolean pre_zero,

-		     JDIMENSION blocksperrow, JDIMENSION numrows,

-		     JDIMENSION maxaccess)

-/* Request a virtual 2-D coefficient-block array */

-{

-  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;

-  jvirt_barray_ptr result;

-

-  /* Only IMAGE-lifetime virtual arrays are currently supported */

-  if (pool_id != JPOOL_IMAGE)

-    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id);	/* safety check */

-

-  /* get control block */

-  result = (jvirt_barray_ptr) alloc_small(cinfo, pool_id,

-					  SIZEOF(struct jvirt_barray_control));

-

-  result->mem_buffer = NULL;	/* marks array not yet realized */

-  result->rows_in_array = numrows;

-  result->blocksperrow = blocksperrow;

-  result->maxaccess = maxaccess;

-  result->pre_zero = pre_zero;

-  result->b_s_open = FALSE;	/* no associated backing-store object */

-  result->next = mem->virt_barray_list; /* add to list of virtual arrays */

-  mem->virt_barray_list = result;

-

-  return result;

-}

-

-

-METHODDEF void

-realize_virt_arrays (j_common_ptr cinfo)

-/* Allocate the in-memory buffers for any unrealized virtual arrays */

-{

-  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;

-  long space_per_minheight, maximum_space, avail_mem;

-  long minheights, max_minheights;

-  jvirt_sarray_ptr sptr;

-  jvirt_barray_ptr bptr;

-

-  /* Compute the minimum space needed (maxaccess rows in each buffer)

-   * and the maximum space needed (full image height in each buffer).

-   * These may be of use to the system-dependent jpeg_mem_available routine.

-   */

-  space_per_minheight = 0;

-  maximum_space = 0;

-  for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) {

-    if (sptr->mem_buffer == NULL) { /* if not realized yet */

-      space_per_minheight += (long) sptr->maxaccess *

-			     (long) sptr->samplesperrow * SIZEOF(JSAMPLE);

-      maximum_space += (long) sptr->rows_in_array *

-		       (long) sptr->samplesperrow * SIZEOF(JSAMPLE);

-    }

-  }

-  for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) {

-    if (bptr->mem_buffer == NULL) { /* if not realized yet */

-      space_per_minheight += (long) bptr->maxaccess *

-			     (long) bptr->blocksperrow * SIZEOF(JBLOCK);

-      maximum_space += (long) bptr->rows_in_array *

-		       (long) bptr->blocksperrow * SIZEOF(JBLOCK);

-    }

-  }

-

-  if (space_per_minheight <= 0)

-    return;			/* no unrealized arrays, no work */

-

-  /* Determine amount of memory to actually use; this is system-dependent. */

-  avail_mem = jpeg_mem_available(cinfo, space_per_minheight, maximum_space,

-				 mem->total_space_allocated);

-

-  /* If the maximum space needed is available, make all the buffers full

-   * height; otherwise parcel it out with the same number of minheights

-   * in each buffer.

-   */

-  if (avail_mem >= maximum_space)

-    max_minheights = 1000000000L;

-  else {

-    max_minheights = avail_mem / space_per_minheight;

-    /* If there doesn't seem to be enough space, try to get the minimum

-     * anyway.  This allows a "stub" implementation of jpeg_mem_available().

-     */

-    if (max_minheights <= 0)

-      max_minheights = 1;

-  }

-

-  /* Allocate the in-memory buffers and initialize backing store as needed. */

-

-  for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) {

-    if (sptr->mem_buffer == NULL) { /* if not realized yet */

-      minheights = ((long) sptr->rows_in_array - 1L) / sptr->maxaccess + 1L;

-      if (minheights <= max_minheights) {

-	/* This buffer fits in memory */

-	sptr->rows_in_mem = sptr->rows_in_array;

-      } else {

-	/* It doesn't fit in memory, create backing store. */

-	sptr->rows_in_mem = (JDIMENSION) (max_minheights * sptr->maxaccess);

-	jpeg_open_backing_store(cinfo, & sptr->b_s_info,

-				(long) sptr->rows_in_array *

-				(long) sptr->samplesperrow *

-				(long) SIZEOF(JSAMPLE));

-	sptr->b_s_open = TRUE;

-      }

-      sptr->mem_buffer = alloc_sarray(cinfo, JPOOL_IMAGE,

-				      sptr->samplesperrow, sptr->rows_in_mem);

-      sptr->rowsperchunk = mem->last_rowsperchunk;

-      sptr->cur_start_row = 0;

-      sptr->first_undef_row = 0;

-      sptr->dirty = FALSE;

-    }

-  }

-

-  for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) {

-    if (bptr->mem_buffer == NULL) { /* if not realized yet */

-      minheights = ((long) bptr->rows_in_array - 1L) / bptr->maxaccess + 1L;

-      if (minheights <= max_minheights) {

-	/* This buffer fits in memory */

-	bptr->rows_in_mem = bptr->rows_in_array;

-      } else {

-	/* It doesn't fit in memory, create backing store. */

-	bptr->rows_in_mem = (JDIMENSION) (max_minheights * bptr->maxaccess);

-	jpeg_open_backing_store(cinfo, & bptr->b_s_info,

-				(long) bptr->rows_in_array *

-				(long) bptr->blocksperrow *

-				(long) SIZEOF(JBLOCK));

-	bptr->b_s_open = TRUE;

-      }

-      bptr->mem_buffer = alloc_barray(cinfo, JPOOL_IMAGE,

-				      bptr->blocksperrow, bptr->rows_in_mem);

-      bptr->rowsperchunk = mem->last_rowsperchunk;

-      bptr->cur_start_row = 0;

-      bptr->first_undef_row = 0;

-      bptr->dirty = FALSE;

-    }

-  }

-}

-

-

-LOCAL void

-do_sarray_io (j_common_ptr cinfo, jvirt_sarray_ptr ptr, boolean writing)

-/* Do backing store read or write of a virtual sample array */

-{

-  long bytesperrow, file_offset, byte_count, rows, thisrow, i;

-

-  bytesperrow = (long) ptr->samplesperrow * SIZEOF(JSAMPLE);

-  file_offset = ptr->cur_start_row * bytesperrow;

-  /* Loop to read or write each allocation chunk in mem_buffer */

-  for (i = 0; i < (long) ptr->rows_in_mem; i += ptr->rowsperchunk) {

-    /* One chunk, but check for short chunk at end of buffer */

-    rows = MIN((long) ptr->rowsperchunk, (long) ptr->rows_in_mem - i);

-    /* Transfer no more than is currently defined */

-    thisrow = (long) ptr->cur_start_row + i;

-    rows = MIN(rows, (long) ptr->first_undef_row - thisrow);

-    /* Transfer no more than fits in file */

-    rows = MIN(rows, (long) ptr->rows_in_array - thisrow);

-    if (rows <= 0)		/* this chunk might be past end of file! */

-      break;

-    byte_count = rows * bytesperrow;

-    if (writing)

-      (*ptr->b_s_info.write_backing_store) (cinfo, & ptr->b_s_info,

-					    (void FAR *) ptr->mem_buffer[i],

-					    file_offset, byte_count);

-    else

-      (*ptr->b_s_info.read_backing_store) (cinfo, & ptr->b_s_info,

-					   (void FAR *) ptr->mem_buffer[i],

-					   file_offset, byte_count);

-    file_offset += byte_count;

-  }

-}

-

-

-LOCAL void

-do_barray_io (j_common_ptr cinfo, jvirt_barray_ptr ptr, boolean writing)

-/* Do backing store read or write of a virtual coefficient-block array */

-{

-  long bytesperrow, file_offset, byte_count, rows, thisrow, i;

-

-  bytesperrow = (long) ptr->blocksperrow * SIZEOF(JBLOCK);

-  file_offset = ptr->cur_start_row * bytesperrow;

-  /* Loop to read or write each allocation chunk in mem_buffer */

-  for (i = 0; i < (long) ptr->rows_in_mem; i += ptr->rowsperchunk) {

-    /* One chunk, but check for short chunk at end of buffer */

-    rows = MIN((long) ptr->rowsperchunk, (long) ptr->rows_in_mem - i);

-    /* Transfer no more than is currently defined */

-    thisrow = (long) ptr->cur_start_row + i;

-    rows = MIN(rows, (long) ptr->first_undef_row - thisrow);

-    /* Transfer no more than fits in file */

-    rows = MIN(rows, (long) ptr->rows_in_array - thisrow);

-    if (rows <= 0)		/* this chunk might be past end of file! */

-      break;

-    byte_count = rows * bytesperrow;

-    if (writing)

-      (*ptr->b_s_info.write_backing_store) (cinfo, & ptr->b_s_info,

-					    (void FAR *) ptr->mem_buffer[i],

-					    file_offset, byte_count);

-    else

-      (*ptr->b_s_info.read_backing_store) (cinfo, & ptr->b_s_info,

-					   (void FAR *) ptr->mem_buffer[i],

-					   file_offset, byte_count);

-    file_offset += byte_count;

-  }

-}

-

-

-METHODDEF JSAMPARRAY

-access_virt_sarray (j_common_ptr cinfo, jvirt_sarray_ptr ptr,

-		    JDIMENSION start_row, JDIMENSION num_rows,

-		    boolean writable)

-/* Access the part of a virtual sample array starting at start_row */

-/* and extending for num_rows rows.  writable is true if  */

-/* caller intends to modify the accessed area. */

-{

-  JDIMENSION end_row = start_row + num_rows;

-  JDIMENSION undef_row;

-

-  /* debugging check */

-  if (end_row > ptr->rows_in_array || num_rows > ptr->maxaccess ||

-      ptr->mem_buffer == NULL)

-    ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);

-

-  /* Make the desired part of the virtual array accessible */

-  if (start_row < ptr->cur_start_row ||

-      end_row > ptr->cur_start_row+ptr->rows_in_mem) {

-    if (! ptr->b_s_open)

-      ERREXIT(cinfo, JERR_VIRTUAL_BUG);

-    /* Flush old buffer contents if necessary */

-    if (ptr->dirty) {

-      do_sarray_io(cinfo, ptr, TRUE);

-      ptr->dirty = FALSE;

-    }

-    /* Decide what part of virtual array to access.

-     * Algorithm: if target address > current window, assume forward scan,

-     * load starting at target address.  If target address < current window,

-     * assume backward scan, load so that target area is top of window.

-     * Note that when switching from forward write to forward read, will have

-     * start_row = 0, so the limiting case applies and we load from 0 anyway.

-     */

-    if (start_row > ptr->cur_start_row) {

-      ptr->cur_start_row = start_row;

-    } else {

-      /* use long arithmetic here to avoid overflow & unsigned problems */

-      long ltemp;

-

-      ltemp = (long) end_row - (long) ptr->rows_in_mem;

-      if (ltemp < 0)

-	ltemp = 0;		/* don't fall off front end of file */

-      ptr->cur_start_row = (JDIMENSION) ltemp;

-    }

-    /* Read in the selected part of the array.

-     * During the initial write pass, we will do no actual read

-     * because the selected part is all undefined.

-     */

-    do_sarray_io(cinfo, ptr, FALSE);

-  }

-  /* Ensure the accessed part of the array is defined; prezero if needed.

-   * To improve locality of access, we only prezero the part of the array

-   * that the caller is about to access, not the entire in-memory array.

-   */

-  if (ptr->first_undef_row < end_row) {

-    if (ptr->first_undef_row < start_row) {

-      if (writable)		/* writer skipped over a section of array */

-	ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);

-      undef_row = start_row;	/* but reader is allowed to read ahead */

-    } else {

-      undef_row = ptr->first_undef_row;

-    }

-    if (writable)

-      ptr->first_undef_row = end_row;

-    if (ptr->pre_zero) {

-      size_t bytesperrow = (size_t) ptr->samplesperrow * SIZEOF(JSAMPLE);

-      undef_row -= ptr->cur_start_row; /* make indexes relative to buffer */

-      end_row -= ptr->cur_start_row;

-      while (undef_row < end_row) {

-	jzero_far((void FAR *) ptr->mem_buffer[undef_row], bytesperrow);

-	undef_row++;

-      }

-    } else {

-      if (! writable)		/* reader looking at undefined data */

-	ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);

-    }

-  }

-  /* Flag the buffer dirty if caller will write in it */

-  if (writable)

-    ptr->dirty = TRUE;

-  /* Return address of proper part of the buffer */

-  return ptr->mem_buffer + (start_row - ptr->cur_start_row);

-}

-

-

-METHODDEF JBLOCKARRAY

-access_virt_barray (j_common_ptr cinfo, jvirt_barray_ptr ptr,

-		    JDIMENSION start_row, JDIMENSION num_rows,

-		    boolean writable)

-/* Access the part of a virtual block array starting at start_row */

-/* and extending for num_rows rows.  writable is true if  */

-/* caller intends to modify the accessed area. */

-{

-  JDIMENSION end_row = start_row + num_rows;

-  JDIMENSION undef_row;

-

-  /* debugging check */

-  if (end_row > ptr->rows_in_array || num_rows > ptr->maxaccess ||

-      ptr->mem_buffer == NULL)

-    ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);

-

-  /* Make the desired part of the virtual array accessible */

-  if (start_row < ptr->cur_start_row ||

-      end_row > ptr->cur_start_row+ptr->rows_in_mem) {

-    if (! ptr->b_s_open)

-      ERREXIT(cinfo, JERR_VIRTUAL_BUG);

-    /* Flush old buffer contents if necessary */

-    if (ptr->dirty) {

-      do_barray_io(cinfo, ptr, TRUE);

-      ptr->dirty = FALSE;

-    }

-    /* Decide what part of virtual array to access.

-     * Algorithm: if target address > current window, assume forward scan,

-     * load starting at target address.  If target address < current window,

-     * assume backward scan, load so that target area is top of window.

-     * Note that when switching from forward write to forward read, will have

-     * start_row = 0, so the limiting case applies and we load from 0 anyway.

-     */

-    if (start_row > ptr->cur_start_row) {

-      ptr->cur_start_row = start_row;

-    } else {

-      /* use long arithmetic here to avoid overflow & unsigned problems */

-      long ltemp;

-

-      ltemp = (long) end_row - (long) ptr->rows_in_mem;

-      if (ltemp < 0)

-	ltemp = 0;		/* don't fall off front end of file */

-      ptr->cur_start_row = (JDIMENSION) ltemp;

-    }

-    /* Read in the selected part of the array.

-     * During the initial write pass, we will do no actual read

-     * because the selected part is all undefined.

-     */

-    do_barray_io(cinfo, ptr, FALSE);

-  }

-  /* Ensure the accessed part of the array is defined; prezero if needed.

-   * To improve locality of access, we only prezero the part of the array

-   * that the caller is about to access, not the entire in-memory array.

-   */

-  if (ptr->first_undef_row < end_row) {

-    if (ptr->first_undef_row < start_row) {

-      if (writable)		/* writer skipped over a section of array */

-	ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);

-      undef_row = start_row;	/* but reader is allowed to read ahead */

-    } else {

-      undef_row = ptr->first_undef_row;

-    }

-    if (writable)

-      ptr->first_undef_row = end_row;

-    if (ptr->pre_zero) {

-      size_t bytesperrow = (size_t) ptr->blocksperrow * SIZEOF(JBLOCK);

-      undef_row -= ptr->cur_start_row; /* make indexes relative to buffer */

-      end_row -= ptr->cur_start_row;

-      while (undef_row < end_row) {

-	jzero_far((void FAR *) ptr->mem_buffer[undef_row], bytesperrow);

-	undef_row++;

-      }

-    } else {

-      if (! writable)		/* reader looking at undefined data */

-	ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);

-    }

-  }

-  /* Flag the buffer dirty if caller will write in it */

-  if (writable)

-    ptr->dirty = TRUE;

-  /* Return address of proper part of the buffer */

-  return ptr->mem_buffer + (start_row - ptr->cur_start_row);

-}

-

-

-/*

- * Release all objects belonging to a specified pool.

- */

-

-METHODDEF void

-free_pool (j_common_ptr cinfo, int pool_id)

-{

-  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;

-  small_pool_ptr shdr_ptr;

-  large_pool_ptr lhdr_ptr;

-  size_t space_freed;

-

-  if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS)

-    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id);	/* safety check */

-

-#ifdef MEM_STATS

-  if (cinfo->err->trace_level > 1)

-    print_mem_stats(cinfo, pool_id); /* print pool's memory usage statistics */

-#endif

-

-  /* If freeing IMAGE pool, close any virtual arrays first */

-  if (pool_id == JPOOL_IMAGE) {

-    jvirt_sarray_ptr sptr;

-    jvirt_barray_ptr bptr;

-

-    for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) {

-      if (sptr->b_s_open) {	/* there may be no backing store */

-	sptr->b_s_open = FALSE;	/* prevent recursive close if error */

-	(*sptr->b_s_info.close_backing_store) (cinfo, & sptr->b_s_info);

-      }

-    }

-    mem->virt_sarray_list = NULL;

-    for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) {

-      if (bptr->b_s_open) {	/* there may be no backing store */

-	bptr->b_s_open = FALSE;	/* prevent recursive close if error */

-	(*bptr->b_s_info.close_backing_store) (cinfo, & bptr->b_s_info);

-      }

-    }

-    mem->virt_barray_list = NULL;

-  }

-

-  /* Release large objects */

-  lhdr_ptr = mem->large_list[pool_id];

-  mem->large_list[pool_id] = NULL;

-

-  while (lhdr_ptr != NULL) {

-    large_pool_ptr next_lhdr_ptr = lhdr_ptr->hdr.next;

-    space_freed = lhdr_ptr->hdr.bytes_used +

-		  lhdr_ptr->hdr.bytes_left +

-		  SIZEOF(large_pool_hdr);

-    jpeg_free_large(cinfo, (void FAR *) lhdr_ptr, space_freed);

-    mem->total_space_allocated -= space_freed;

-    lhdr_ptr = next_lhdr_ptr;

-  }

-

-  /* Release small objects */

-  shdr_ptr = mem->small_list[pool_id];

-  mem->small_list[pool_id] = NULL;

-

-  while (shdr_ptr != NULL) {

-    small_pool_ptr next_shdr_ptr = shdr_ptr->hdr.next;

-    space_freed = shdr_ptr->hdr.bytes_used +

-		  shdr_ptr->hdr.bytes_left +

-		  SIZEOF(small_pool_hdr);

-    jpeg_free_small(cinfo, (void *) shdr_ptr, space_freed);

-    mem->total_space_allocated -= space_freed;

-    shdr_ptr = next_shdr_ptr;

-  }

-}

-

-

-/*

- * Close up shop entirely.

- * Note that this cannot be called unless cinfo->mem is non-NULL.

- */

-

-METHODDEF void

-self_destruct (j_common_ptr cinfo)

-{

-  int pool;

-

-  /* Close all backing store, release all memory.

-   * Releasing pools in reverse order might help avoid fragmentation

-   * with some (brain-damaged) malloc libraries.

-   */

-  for (pool = JPOOL_NUMPOOLS-1; pool >= JPOOL_PERMANENT; pool--) {

-    free_pool(cinfo, pool);

-  }

-

-  /* Release the memory manager control block too. */

-  jpeg_free_small(cinfo, (void *) cinfo->mem, SIZEOF(my_memory_mgr));

-  cinfo->mem = NULL;		/* ensures I will be called only once */

-

-  jpeg_mem_term(cinfo);		/* system-dependent cleanup */

-}

-

-

-/*

- * Memory manager initialization.

- * When this is called, only the error manager pointer is valid in cinfo!

- */

-

-GLOBAL void

-jinit_memory_mgr (j_common_ptr cinfo)

-{

-  my_mem_ptr mem;

-  long max_to_use;

-  int pool;

-  size_t test_mac;

-

-  cinfo->mem = NULL;		/* for safety if init fails */

-

-  /* Check for configuration errors.

-   * SIZEOF(ALIGN_TYPE) should be a power of 2; otherwise, it probably

-   * doesn't reflect any real hardware alignment requirement.

-   * The test is a little tricky: for X>0, X and X-1 have no one-bits

-   * in common if and only if X is a power of 2, ie has only one one-bit.

-   * Some compilers may give an "unreachable code" warning here; ignore it.

-   */

-  if ((SIZEOF(ALIGN_TYPE) & (SIZEOF(ALIGN_TYPE)-1)) != 0)

-    ERREXIT(cinfo, JERR_BAD_ALIGN_TYPE);

-  /* MAX_ALLOC_CHUNK must be representable as type size_t, and must be

-   * a multiple of SIZEOF(ALIGN_TYPE).

-   * Again, an "unreachable code" warning may be ignored here.

-   * But a "constant too large" warning means you need to fix MAX_ALLOC_CHUNK.

-   */

-  test_mac = (size_t) MAX_ALLOC_CHUNK;

-  if ((long) test_mac != MAX_ALLOC_CHUNK ||

-      (MAX_ALLOC_CHUNK % SIZEOF(ALIGN_TYPE)) != 0)

-    ERREXIT(cinfo, JERR_BAD_ALLOC_CHUNK);

-

-  max_to_use = jpeg_mem_init(cinfo); /* system-dependent initialization */

-

-  /* Attempt to allocate memory manager's control block */

-  mem = (my_mem_ptr) jpeg_get_small(cinfo, SIZEOF(my_memory_mgr));

-

-  if (mem == NULL) {

-    jpeg_mem_term(cinfo);	/* system-dependent cleanup */

-    ERREXIT1(cinfo, JERR_OUT_OF_MEMORY, 0);

-  }

-

-  /* OK, fill in the method pointers */

-  mem->pub.alloc_small = alloc_small;

-  mem->pub.alloc_large = alloc_large;

-  mem->pub.alloc_sarray = alloc_sarray;

-  mem->pub.alloc_barray = alloc_barray;

-  mem->pub.request_virt_sarray = request_virt_sarray;

-  mem->pub.request_virt_barray = request_virt_barray;

-  mem->pub.realize_virt_arrays = realize_virt_arrays;

-  mem->pub.access_virt_sarray = access_virt_sarray;

-  mem->pub.access_virt_barray = access_virt_barray;

-  mem->pub.free_pool = free_pool;

-  mem->pub.self_destruct = self_destruct;

-

-  /* Initialize working state */

-  mem->pub.max_memory_to_use = max_to_use;

-

-  for (pool = JPOOL_NUMPOOLS-1; pool >= JPOOL_PERMANENT; pool--) {

-    mem->small_list[pool] = NULL;

-    mem->large_list[pool] = NULL;

-  }

-  mem->virt_sarray_list = NULL;

-  mem->virt_barray_list = NULL;

-

-  mem->total_space_allocated = SIZEOF(my_memory_mgr);

-

-  /* Declare ourselves open for business */

-  cinfo->mem = & mem->pub;

-

-  /* Check for an environment variable JPEGMEM; if found, override the

-   * default max_memory setting from jpeg_mem_init.  Note that the

-   * surrounding application may again override this value.

-   * If your system doesn't support getenv(), define NO_GETENV to disable

-   * this feature.

-   */

-#ifndef NO_GETENV

-  { char * memenv;

-

-    if ((memenv = getenv("JPEGMEM")) != NULL) {

-      char ch = 'x';

-

-      if (sscanf(memenv, "%ld%c", &max_to_use, &ch) > 0) {

-	if (ch == 'm' || ch == 'M')

-	  max_to_use *= 1000L;

-	mem->pub.max_memory_to_use = max_to_use * 1000L;

-      }

-    }

-  }

-#endif

-

-}

+/*
+ * jmemmgr.c
+ *
+ * Copyright (C) 1991-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains the JPEG system-independent memory management
+ * routines.  This code is usable across a wide variety of machines; most
+ * of the system dependencies have been isolated in a separate file.
+ * The major functions provided here are:
+ *   * pool-based allocation and freeing of memory;
+ *   * policy decisions about how to divide available memory among the
+ *     virtual arrays;
+ *   * control logic for swapping virtual arrays between main memory and
+ *     backing storage.
+ * The separate system-dependent file provides the actual backing-storage
+ * access code, and it contains the policy decision about how much total
+ * main memory to use.
+ * This file is system-dependent in the sense that some of its functions
+ * are unnecessary in some systems.  For example, if there is enough virtual
+ * memory so that backing storage will never be used, much of the virtual
+ * array control logic could be removed.  (Of course, if you have that much
+ * memory then you shouldn't care about a little bit of unused code...)
+ */
+
+#define JPEG_INTERNALS
+#define AM_MEMORY_MANAGER	/* we define jvirt_Xarray_control structs */
+#include "jinclude.h"
+#include "jpeglib.h"
+#include "jmemsys.h"		/* import the system-dependent declarations */
+
+#ifndef NO_GETENV
+#ifndef HAVE_STDLIB_H		/* <stdlib.h> should declare getenv() */
+extern char * getenv JPP((const char * name));
+#endif
+#endif
+
+
+/*
+ * Some important notes:
+ *   The allocation routines provided here must never return NULL.
+ *   They should exit to error_exit if unsuccessful.
+ *
+ *   It's not a good idea to try to merge the sarray and barray routines,
+ *   even though they are textually almost the same, because samples are
+ *   usually stored as bytes while coefficients are shorts or ints.  Thus,
+ *   in machines where byte pointers have a different representation from
+ *   word pointers, the resulting machine code could not be the same.
+ */
+
+
+/*
+ * Many machines require storage alignment: longs must start on 4-byte
+ * boundaries, doubles on 8-byte boundaries, etc.  On such machines, malloc()
+ * always returns pointers that are multiples of the worst-case alignment
+ * requirement, and we had better do so too.
+ * There isn't any really portable way to determine the worst-case alignment
+ * requirement.  This module assumes that the alignment requirement is
+ * multiples of sizeof(ALIGN_TYPE).
+ * By default, we define ALIGN_TYPE as double.  This is necessary on some
+ * workstations (where doubles really do need 8-byte alignment) and will work
+ * fine on nearly everything.  If your machine has lesser alignment needs,
+ * you can save a few bytes by making ALIGN_TYPE smaller.
+ * The only place I know of where this will NOT work is certain Macintosh
+ * 680x0 compilers that define double as a 10-byte IEEE extended float.
+ * Doing 10-byte alignment is counterproductive because longwords won't be
+ * aligned well.  Put "#define ALIGN_TYPE long" in jconfig.h if you have
+ * such a compiler.
+ */
+
+#ifndef ALIGN_TYPE		/* so can override from jconfig.h */
+#define ALIGN_TYPE  double
+#endif
+
+
+/*
+ * We allocate objects from "pools", where each pool is gotten with a single
+ * request to jpeg_get_small() or jpeg_get_large().  There is no per-object
+ * overhead within a pool, except for alignment padding.  Each pool has a
+ * header with a link to the next pool of the same class.
+ * Small and large pool headers are identical except that the latter's
+ * link pointer must be FAR on 80x86 machines.
+ * Notice that the "real" header fields are union'ed with a dummy ALIGN_TYPE
+ * field.  This forces the compiler to make SIZEOF(small_pool_hdr) a multiple
+ * of the alignment requirement of ALIGN_TYPE.
+ */
+
+typedef union small_pool_struct * small_pool_ptr;
+
+typedef union small_pool_struct {
+  struct {
+    small_pool_ptr next;	/* next in list of pools */
+    size_t bytes_used;		/* how many bytes already used within pool */
+    size_t bytes_left;		/* bytes still available in this pool */
+  } hdr;
+  ALIGN_TYPE dummy;		/* included in union to ensure alignment */
+} small_pool_hdr;
+
+typedef union large_pool_struct FAR * large_pool_ptr;
+
+typedef union large_pool_struct {
+  struct {
+    large_pool_ptr next;	/* next in list of pools */
+    size_t bytes_used;		/* how many bytes already used within pool */
+    size_t bytes_left;		/* bytes still available in this pool */
+  } hdr;
+  ALIGN_TYPE dummy;		/* included in union to ensure alignment */
+} large_pool_hdr;
+
+
+/*
+ * Here is the full definition of a memory manager object.
+ */
+
+typedef struct {
+  struct jpeg_memory_mgr pub;	/* public fields */
+
+  /* Each pool identifier (lifetime class) names a linked list of pools. */
+  small_pool_ptr small_list[JPOOL_NUMPOOLS];
+  large_pool_ptr large_list[JPOOL_NUMPOOLS];
+
+  /* Since we only have one lifetime class of virtual arrays, only one
+   * linked list is necessary (for each datatype).  Note that the virtual
+   * array control blocks being linked together are actually stored somewhere
+   * in the small-pool list.
+   */
+  jvirt_sarray_ptr virt_sarray_list;
+  jvirt_barray_ptr virt_barray_list;
+
+  /* This counts total space obtained from jpeg_get_small/large */
+  long total_space_allocated;
+
+  /* alloc_sarray and alloc_barray set this value for use by virtual
+   * array routines.
+   */
+  JDIMENSION last_rowsperchunk;	/* from most recent alloc_sarray/barray */
+} my_memory_mgr;
+
+typedef my_memory_mgr * my_mem_ptr;
+
+
+/*
+ * The control blocks for virtual arrays.
+ * Note that these blocks are allocated in the "small" pool area.
+ * System-dependent info for the associated backing store (if any) is hidden
+ * inside the backing_store_info struct.
+ */
+
+struct jvirt_sarray_control {
+  JSAMPARRAY mem_buffer;	/* => the in-memory buffer */
+  JDIMENSION rows_in_array;	/* total virtual array height */
+  JDIMENSION samplesperrow;	/* width of array (and of memory buffer) */
+  JDIMENSION maxaccess;		/* max rows accessed by access_virt_sarray */
+  JDIMENSION rows_in_mem;	/* height of memory buffer */
+  JDIMENSION rowsperchunk;	/* allocation chunk size in mem_buffer */
+  JDIMENSION cur_start_row;	/* first logical row # in the buffer */
+  JDIMENSION first_undef_row;	/* row # of first uninitialized row */
+  boolean pre_zero;		/* pre-zero mode requested? */
+  boolean dirty;		/* do current buffer contents need written? */
+  boolean b_s_open;		/* is backing-store data valid? */
+  jvirt_sarray_ptr next;	/* link to next virtual sarray control block */
+  backing_store_info b_s_info;	/* System-dependent control info */
+};
+
+struct jvirt_barray_control {
+  JBLOCKARRAY mem_buffer;	/* => the in-memory buffer */
+  JDIMENSION rows_in_array;	/* total virtual array height */
+  JDIMENSION blocksperrow;	/* width of array (and of memory buffer) */
+  JDIMENSION maxaccess;		/* max rows accessed by access_virt_barray */
+  JDIMENSION rows_in_mem;	/* height of memory buffer */
+  JDIMENSION rowsperchunk;	/* allocation chunk size in mem_buffer */
+  JDIMENSION cur_start_row;	/* first logical row # in the buffer */
+  JDIMENSION first_undef_row;	/* row # of first uninitialized row */
+  boolean pre_zero;		/* pre-zero mode requested? */
+  boolean dirty;		/* do current buffer contents need written? */
+  boolean b_s_open;		/* is backing-store data valid? */
+  jvirt_barray_ptr next;	/* link to next virtual barray control block */
+  backing_store_info b_s_info;	/* System-dependent control info */
+};
+
+
+#ifdef MEM_STATS		/* optional extra stuff for statistics */
+
+LOCAL void
+print_mem_stats (j_common_ptr cinfo, int pool_id)
+{
+  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
+  small_pool_ptr shdr_ptr;
+  large_pool_ptr lhdr_ptr;
+
+  /* Since this is only a debugging stub, we can cheat a little by using
+   * fprintf directly rather than going through the trace message code.
+   * This is helpful because message parm array can't handle longs.
+   */
+  fprintf(stderr, "Freeing pool %d, total space = %ld\n",
+	  pool_id, mem->total_space_allocated);
+
+  for (lhdr_ptr = mem->large_list[pool_id]; lhdr_ptr != NULL;
+       lhdr_ptr = lhdr_ptr->hdr.next) {
+    fprintf(stderr, "  Large chunk used %ld\n",
+	    (long) lhdr_ptr->hdr.bytes_used);
+  }
+
+  for (shdr_ptr = mem->small_list[pool_id]; shdr_ptr != NULL;
+       shdr_ptr = shdr_ptr->hdr.next) {
+    fprintf(stderr, "  Small chunk used %ld free %ld\n",
+	    (long) shdr_ptr->hdr.bytes_used,
+	    (long) shdr_ptr->hdr.bytes_left);
+  }
+}
+
+#endif /* MEM_STATS */
+
+
+LOCAL void
+out_of_memory (j_common_ptr cinfo, int which)
+/* Report an out-of-memory error and stop execution */
+/* If we compiled MEM_STATS support, report alloc requests before dying */
+{
+#ifdef MEM_STATS
+  cinfo->err->trace_level = 2;	/* force self_destruct to report stats */
+#endif
+  ERREXIT1(cinfo, JERR_OUT_OF_MEMORY, which);
+}
+
+
+/*
+ * Allocation of "small" objects.
+ *
+ * For these, we use pooled storage.  When a new pool must be created,
+ * we try to get enough space for the current request plus a "slop" factor,
+ * where the slop will be the amount of leftover space in the new pool.
+ * The speed vs. space tradeoff is largely determined by the slop values.
+ * A different slop value is provided for each pool class (lifetime),
+ * and we also distinguish the first pool of a class from later ones.
+ * NOTE: the values given work fairly well on both 16- and 32-bit-int
+ * machines, but may be too small if longs are 64 bits or more.
+ */
+
+static const size_t first_pool_slop[JPOOL_NUMPOOLS] = 
+{
+	1600,			/* first PERMANENT pool */
+	16000			/* first IMAGE pool */
+};
+
+static const size_t extra_pool_slop[JPOOL_NUMPOOLS] = 
+{
+	0,			/* additional PERMANENT pools */
+	5000			/* additional IMAGE pools */
+};
+
+#define MIN_SLOP  50		/* greater than 0 to avoid futile looping */
+
+
+METHODDEF void *
+alloc_small (j_common_ptr cinfo, int pool_id, size_t sizeofobject)
+/* Allocate a "small" object */
+{
+  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
+  small_pool_ptr hdr_ptr, prev_hdr_ptr;
+  char * data_ptr;
+  size_t odd_bytes, min_request, slop;
+
+  /* Check for unsatisfiable request (do now to ensure no overflow below) */
+  if (sizeofobject > (size_t) (MAX_ALLOC_CHUNK-SIZEOF(small_pool_hdr)))
+    out_of_memory(cinfo, 1);	/* request exceeds malloc's ability */
+
+  /* Round up the requested size to a multiple of SIZEOF(ALIGN_TYPE) */
+  odd_bytes = sizeofobject % SIZEOF(ALIGN_TYPE);
+  if (odd_bytes > 0)
+    sizeofobject += SIZEOF(ALIGN_TYPE) - odd_bytes;
+
+  /* See if space is available in any existing pool */
+  if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS)
+    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id);	/* safety check */
+  prev_hdr_ptr = NULL;
+  hdr_ptr = mem->small_list[pool_id];
+  while (hdr_ptr != NULL) {
+    if (hdr_ptr->hdr.bytes_left >= sizeofobject)
+      break;			/* found pool with enough space */
+    prev_hdr_ptr = hdr_ptr;
+    hdr_ptr = hdr_ptr->hdr.next;
+  }
+
+  /* Time to make a new pool? */
+  if (hdr_ptr == NULL) {
+    /* min_request is what we need now, slop is what will be leftover */
+    min_request = sizeofobject + SIZEOF(small_pool_hdr);
+    if (prev_hdr_ptr == NULL)	/* first pool in class? */
+      slop = first_pool_slop[pool_id];
+    else
+      slop = extra_pool_slop[pool_id];
+    /* Don't ask for more than MAX_ALLOC_CHUNK */
+    if (slop > (size_t) (MAX_ALLOC_CHUNK-min_request))
+      slop = (size_t) (MAX_ALLOC_CHUNK-min_request);
+    /* Try to get space, if fail reduce slop and try again */
+    for (;;) {
+      hdr_ptr = (small_pool_ptr) jpeg_get_small(cinfo, min_request + slop);
+      if (hdr_ptr != NULL)
+	break;
+      slop /= 2;
+      if (slop < MIN_SLOP)	/* give up when it gets real small */
+	out_of_memory(cinfo, 2); /* jpeg_get_small failed */
+    }
+    mem->total_space_allocated += min_request + slop;
+    /* Success, initialize the new pool header and add to end of list */
+    hdr_ptr->hdr.next = NULL;
+    hdr_ptr->hdr.bytes_used = 0;
+    hdr_ptr->hdr.bytes_left = sizeofobject + slop;
+    if (prev_hdr_ptr == NULL)	/* first pool in class? */
+      mem->small_list[pool_id] = hdr_ptr;
+    else
+      prev_hdr_ptr->hdr.next = hdr_ptr;
+  }
+
+  /* OK, allocate the object from the current pool */
+  data_ptr = (char *) (hdr_ptr + 1); /* point to first data byte in pool */
+  data_ptr += hdr_ptr->hdr.bytes_used; /* point to place for object */
+  hdr_ptr->hdr.bytes_used += sizeofobject;
+  hdr_ptr->hdr.bytes_left -= sizeofobject;
+
+  return (void *) data_ptr;
+}
+
+
+/*
+ * Allocation of "large" objects.
+ *
+ * The external semantics of these are the same as "small" objects,
+ * except that FAR pointers are used on 80x86.  However the pool
+ * management heuristics are quite different.  We assume that each
+ * request is large enough that it may as well be passed directly to
+ * jpeg_get_large; the pool management just links everything together
+ * so that we can free it all on demand.
+ * Note: the major use of "large" objects is in JSAMPARRAY and JBLOCKARRAY
+ * structures.  The routines that create these structures (see below)
+ * deliberately bunch rows together to ensure a large request size.
+ */
+
+METHODDEF void FAR *
+alloc_large (j_common_ptr cinfo, int pool_id, size_t sizeofobject)
+/* Allocate a "large" object */
+{
+  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
+  large_pool_ptr hdr_ptr;
+  size_t odd_bytes;
+
+  /* Check for unsatisfiable request (do now to ensure no overflow below) */
+  if (sizeofobject > (size_t) (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)))
+    out_of_memory(cinfo, 3);	/* request exceeds malloc's ability */
+
+  /* Round up the requested size to a multiple of SIZEOF(ALIGN_TYPE) */
+  odd_bytes = sizeofobject % SIZEOF(ALIGN_TYPE);
+  if (odd_bytes > 0)
+    sizeofobject += SIZEOF(ALIGN_TYPE) - odd_bytes;
+
+  /* Always make a new pool */
+  if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS)
+    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id);	/* safety check */
+
+  hdr_ptr = (large_pool_ptr) jpeg_get_large(cinfo, sizeofobject +
+					    SIZEOF(large_pool_hdr));
+  if (hdr_ptr == NULL)
+    out_of_memory(cinfo, 4);	/* jpeg_get_large failed */
+  mem->total_space_allocated += sizeofobject + SIZEOF(large_pool_hdr);
+
+  /* Success, initialize the new pool header and add to list */
+  hdr_ptr->hdr.next = mem->large_list[pool_id];
+  /* We maintain space counts in each pool header for statistical purposes,
+   * even though they are not needed for allocation.
+   */
+  hdr_ptr->hdr.bytes_used = sizeofobject;
+  hdr_ptr->hdr.bytes_left = 0;
+  mem->large_list[pool_id] = hdr_ptr;
+
+  return (void FAR *) (hdr_ptr + 1); /* point to first data byte in pool */
+}
+
+
+/*
+ * Creation of 2-D sample arrays.
+ * The pointers are in near heap, the samples themselves in FAR heap.
+ *
+ * To minimize allocation overhead and to allow I/O of large contiguous
+ * blocks, we allocate the sample rows in groups of as many rows as possible
+ * without exceeding MAX_ALLOC_CHUNK total bytes per allocation request.
+ * NB: the virtual array control routines, later in this file, know about
+ * this chunking of rows.  The rowsperchunk value is left in the mem manager
+ * object so that it can be saved away if this sarray is the workspace for
+ * a virtual array.
+ */
+
+METHODDEF JSAMPARRAY
+alloc_sarray (j_common_ptr cinfo, int pool_id,
+	      JDIMENSION samplesperrow, JDIMENSION numrows)
+/* Allocate a 2-D sample array */
+{
+  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
+  JSAMPARRAY result;
+  JSAMPROW workspace;
+  JDIMENSION rowsperchunk, currow, i;
+  long ltemp;
+
+  /* Calculate max # of rows allowed in one allocation chunk */
+  ltemp = (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)) /
+	  ((long) samplesperrow * SIZEOF(JSAMPLE));
+  if (ltemp <= 0)
+    ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
+  if (ltemp < (long) numrows)
+    rowsperchunk = (JDIMENSION) ltemp;
+  else
+    rowsperchunk = numrows;
+  mem->last_rowsperchunk = rowsperchunk;
+
+  /* Get space for row pointers (small object) */
+  result = (JSAMPARRAY) alloc_small(cinfo, pool_id,
+				    (size_t) (numrows * SIZEOF(JSAMPROW)));
+
+  /* Get the rows themselves (large objects) */
+  currow = 0;
+  while (currow < numrows) {
+    rowsperchunk = MIN(rowsperchunk, numrows - currow);
+    workspace = (JSAMPROW) alloc_large(cinfo, pool_id,
+	(size_t) ((size_t) rowsperchunk * (size_t) samplesperrow
+		  * SIZEOF(JSAMPLE)));
+    for (i = rowsperchunk; i > 0; i--) {
+      result[currow++] = workspace;
+      workspace += samplesperrow;
+    }
+  }
+
+  return result;
+}
+
+
+/*
+ * Creation of 2-D coefficient-block arrays.
+ * This is essentially the same as the code for sample arrays, above.
+ */
+
+METHODDEF JBLOCKARRAY
+alloc_barray (j_common_ptr cinfo, int pool_id,
+	      JDIMENSION blocksperrow, JDIMENSION numrows)
+/* Allocate a 2-D coefficient-block array */
+{
+  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
+  JBLOCKARRAY result;
+  JBLOCKROW workspace;
+  JDIMENSION rowsperchunk, currow, i;
+  long ltemp;
+
+  /* Calculate max # of rows allowed in one allocation chunk */
+  ltemp = (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)) /
+	  ((long) blocksperrow * SIZEOF(JBLOCK));
+  if (ltemp <= 0)
+    ERREXIT(cinfo, JERR_WIDTH_OVERFLOW);
+  if (ltemp < (long) numrows)
+    rowsperchunk = (JDIMENSION) ltemp;
+  else
+    rowsperchunk = numrows;
+  mem->last_rowsperchunk = rowsperchunk;
+
+  /* Get space for row pointers (small object) */
+  result = (JBLOCKARRAY) alloc_small(cinfo, pool_id,
+				     (size_t) (numrows * SIZEOF(JBLOCKROW)));
+
+  /* Get the rows themselves (large objects) */
+  currow = 0;
+  while (currow < numrows) {
+    rowsperchunk = MIN(rowsperchunk, numrows - currow);
+    workspace = (JBLOCKROW) alloc_large(cinfo, pool_id,
+	(size_t) ((size_t) rowsperchunk * (size_t) blocksperrow
+		  * SIZEOF(JBLOCK)));
+    for (i = rowsperchunk; i > 0; i--) {
+      result[currow++] = workspace;
+      workspace += blocksperrow;
+    }
+  }
+
+  return result;
+}
+
+
+/*
+ * About virtual array management:
+ *
+ * The above "normal" array routines are only used to allocate strip buffers
+ * (as wide as the image, but just a few rows high).  Full-image-sized buffers
+ * are handled as "virtual" arrays.  The array is still accessed a strip at a
+ * time, but the memory manager must save the whole array for repeated
+ * accesses.  The intended implementation is that there is a strip buffer in
+ * memory (as high as is possible given the desired memory limit), plus a
+ * backing file that holds the rest of the array.
+ *
+ * The request_virt_array routines are told the total size of the image and
+ * the maximum number of rows that will be accessed at once.  The in-memory
+ * buffer must be at least as large as the maxaccess value.
+ *
+ * The request routines create control blocks but not the in-memory buffers.
+ * That is postponed until realize_virt_arrays is called.  At that time the
+ * total amount of space needed is known (approximately, anyway), so free
+ * memory can be divided up fairly.
+ *
+ * The access_virt_array routines are responsible for making a specific strip
+ * area accessible (after reading or writing the backing file, if necessary).
+ * Note that the access routines are told whether the caller intends to modify
+ * the accessed strip; during a read-only pass this saves having to rewrite
+ * data to disk.  The access routines are also responsible for pre-zeroing
+ * any newly accessed rows, if pre-zeroing was requested.
+ *
+ * In current usage, the access requests are usually for nonoverlapping
+ * strips; that is, successive access start_row numbers differ by exactly
+ * num_rows = maxaccess.  This means we can get good performance with simple
+ * buffer dump/reload logic, by making the in-memory buffer be a multiple
+ * of the access height; then there will never be accesses across bufferload
+ * boundaries.  The code will still work with overlapping access requests,
+ * but it doesn't handle bufferload overlaps very efficiently.
+ */
+
+
+METHODDEF jvirt_sarray_ptr
+request_virt_sarray (j_common_ptr cinfo, int pool_id, boolean pre_zero,
+		     JDIMENSION samplesperrow, JDIMENSION numrows,
+		     JDIMENSION maxaccess)
+/* Request a virtual 2-D sample array */
+{
+  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
+  jvirt_sarray_ptr result;
+
+  /* Only IMAGE-lifetime virtual arrays are currently supported */
+  if (pool_id != JPOOL_IMAGE)
+    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id);	/* safety check */
+
+  /* get control block */
+  result = (jvirt_sarray_ptr) alloc_small(cinfo, pool_id,
+					  SIZEOF(struct jvirt_sarray_control));
+
+  result->mem_buffer = NULL;	/* marks array not yet realized */
+  result->rows_in_array = numrows;
+  result->samplesperrow = samplesperrow;
+  result->maxaccess = maxaccess;
+  result->pre_zero = pre_zero;
+  result->b_s_open = FALSE;	/* no associated backing-store object */
+  result->next = mem->virt_sarray_list; /* add to list of virtual arrays */
+  mem->virt_sarray_list = result;
+
+  return result;
+}
+
+
+METHODDEF jvirt_barray_ptr
+request_virt_barray (j_common_ptr cinfo, int pool_id, boolean pre_zero,
+		     JDIMENSION blocksperrow, JDIMENSION numrows,
+		     JDIMENSION maxaccess)
+/* Request a virtual 2-D coefficient-block array */
+{
+  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
+  jvirt_barray_ptr result;
+
+  /* Only IMAGE-lifetime virtual arrays are currently supported */
+  if (pool_id != JPOOL_IMAGE)
+    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id);	/* safety check */
+
+  /* get control block */
+  result = (jvirt_barray_ptr) alloc_small(cinfo, pool_id,
+					  SIZEOF(struct jvirt_barray_control));
+
+  result->mem_buffer = NULL;	/* marks array not yet realized */
+  result->rows_in_array = numrows;
+  result->blocksperrow = blocksperrow;
+  result->maxaccess = maxaccess;
+  result->pre_zero = pre_zero;
+  result->b_s_open = FALSE;	/* no associated backing-store object */
+  result->next = mem->virt_barray_list; /* add to list of virtual arrays */
+  mem->virt_barray_list = result;
+
+  return result;
+}
+
+
+METHODDEF void
+realize_virt_arrays (j_common_ptr cinfo)
+/* Allocate the in-memory buffers for any unrealized virtual arrays */
+{
+  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
+  long space_per_minheight, maximum_space, avail_mem;
+  long minheights, max_minheights;
+  jvirt_sarray_ptr sptr;
+  jvirt_barray_ptr bptr;
+
+  /* Compute the minimum space needed (maxaccess rows in each buffer)
+   * and the maximum space needed (full image height in each buffer).
+   * These may be of use to the system-dependent jpeg_mem_available routine.
+   */
+  space_per_minheight = 0;
+  maximum_space = 0;
+  for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) {
+    if (sptr->mem_buffer == NULL) { /* if not realized yet */
+      space_per_minheight += (long) sptr->maxaccess *
+			     (long) sptr->samplesperrow * SIZEOF(JSAMPLE);
+      maximum_space += (long) sptr->rows_in_array *
+		       (long) sptr->samplesperrow * SIZEOF(JSAMPLE);
+    }
+  }
+  for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) {
+    if (bptr->mem_buffer == NULL) { /* if not realized yet */
+      space_per_minheight += (long) bptr->maxaccess *
+			     (long) bptr->blocksperrow * SIZEOF(JBLOCK);
+      maximum_space += (long) bptr->rows_in_array *
+		       (long) bptr->blocksperrow * SIZEOF(JBLOCK);
+    }
+  }
+
+  if (space_per_minheight <= 0)
+    return;			/* no unrealized arrays, no work */
+
+  /* Determine amount of memory to actually use; this is system-dependent. */
+  avail_mem = jpeg_mem_available(cinfo, space_per_minheight, maximum_space,
+				 mem->total_space_allocated);
+
+  /* If the maximum space needed is available, make all the buffers full
+   * height; otherwise parcel it out with the same number of minheights
+   * in each buffer.
+   */
+  if (avail_mem >= maximum_space)
+    max_minheights = 1000000000L;
+  else {
+    max_minheights = avail_mem / space_per_minheight;
+    /* If there doesn't seem to be enough space, try to get the minimum
+     * anyway.  This allows a "stub" implementation of jpeg_mem_available().
+     */
+    if (max_minheights <= 0)
+      max_minheights = 1;
+  }
+
+  /* Allocate the in-memory buffers and initialize backing store as needed. */
+
+  for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) {
+    if (sptr->mem_buffer == NULL) { /* if not realized yet */
+      minheights = ((long) sptr->rows_in_array - 1L) / sptr->maxaccess + 1L;
+      if (minheights <= max_minheights) {
+	/* This buffer fits in memory */
+	sptr->rows_in_mem = sptr->rows_in_array;
+      } else {
+	/* It doesn't fit in memory, create backing store. */
+	sptr->rows_in_mem = (JDIMENSION) (max_minheights * sptr->maxaccess);
+	jpeg_open_backing_store(cinfo, & sptr->b_s_info,
+				(long) sptr->rows_in_array *
+				(long) sptr->samplesperrow *
+				(long) SIZEOF(JSAMPLE));
+	sptr->b_s_open = TRUE;
+      }
+      sptr->mem_buffer = alloc_sarray(cinfo, JPOOL_IMAGE,
+				      sptr->samplesperrow, sptr->rows_in_mem);
+      sptr->rowsperchunk = mem->last_rowsperchunk;
+      sptr->cur_start_row = 0;
+      sptr->first_undef_row = 0;
+      sptr->dirty = FALSE;
+    }
+  }
+
+  for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) {
+    if (bptr->mem_buffer == NULL) { /* if not realized yet */
+      minheights = ((long) bptr->rows_in_array - 1L) / bptr->maxaccess + 1L;
+      if (minheights <= max_minheights) {
+	/* This buffer fits in memory */
+	bptr->rows_in_mem = bptr->rows_in_array;
+      } else {
+	/* It doesn't fit in memory, create backing store. */
+	bptr->rows_in_mem = (JDIMENSION) (max_minheights * bptr->maxaccess);
+	jpeg_open_backing_store(cinfo, & bptr->b_s_info,
+				(long) bptr->rows_in_array *
+				(long) bptr->blocksperrow *
+				(long) SIZEOF(JBLOCK));
+	bptr->b_s_open = TRUE;
+      }
+      bptr->mem_buffer = alloc_barray(cinfo, JPOOL_IMAGE,
+				      bptr->blocksperrow, bptr->rows_in_mem);
+      bptr->rowsperchunk = mem->last_rowsperchunk;
+      bptr->cur_start_row = 0;
+      bptr->first_undef_row = 0;
+      bptr->dirty = FALSE;
+    }
+  }
+}
+
+
+LOCAL void
+do_sarray_io (j_common_ptr cinfo, jvirt_sarray_ptr ptr, boolean writing)
+/* Do backing store read or write of a virtual sample array */
+{
+  long bytesperrow, file_offset, byte_count, rows, thisrow, i;
+
+  bytesperrow = (long) ptr->samplesperrow * SIZEOF(JSAMPLE);
+  file_offset = ptr->cur_start_row * bytesperrow;
+  /* Loop to read or write each allocation chunk in mem_buffer */
+  for (i = 0; i < (long) ptr->rows_in_mem; i += ptr->rowsperchunk) {
+    /* One chunk, but check for short chunk at end of buffer */
+    rows = MIN((long) ptr->rowsperchunk, (long) ptr->rows_in_mem - i);
+    /* Transfer no more than is currently defined */
+    thisrow = (long) ptr->cur_start_row + i;
+    rows = MIN(rows, (long) ptr->first_undef_row - thisrow);
+    /* Transfer no more than fits in file */
+    rows = MIN(rows, (long) ptr->rows_in_array - thisrow);
+    if (rows <= 0)		/* this chunk might be past end of file! */
+      break;
+    byte_count = rows * bytesperrow;
+    if (writing)
+      (*ptr->b_s_info.write_backing_store) (cinfo, & ptr->b_s_info,
+					    (void FAR *) ptr->mem_buffer[i],
+					    file_offset, byte_count);
+    else
+      (*ptr->b_s_info.read_backing_store) (cinfo, & ptr->b_s_info,
+					   (void FAR *) ptr->mem_buffer[i],
+					   file_offset, byte_count);
+    file_offset += byte_count;
+  }
+}
+
+
+LOCAL void
+do_barray_io (j_common_ptr cinfo, jvirt_barray_ptr ptr, boolean writing)
+/* Do backing store read or write of a virtual coefficient-block array */
+{
+  long bytesperrow, file_offset, byte_count, rows, thisrow, i;
+
+  bytesperrow = (long) ptr->blocksperrow * SIZEOF(JBLOCK);
+  file_offset = ptr->cur_start_row * bytesperrow;
+  /* Loop to read or write each allocation chunk in mem_buffer */
+  for (i = 0; i < (long) ptr->rows_in_mem; i += ptr->rowsperchunk) {
+    /* One chunk, but check for short chunk at end of buffer */
+    rows = MIN((long) ptr->rowsperchunk, (long) ptr->rows_in_mem - i);
+    /* Transfer no more than is currently defined */
+    thisrow = (long) ptr->cur_start_row + i;
+    rows = MIN(rows, (long) ptr->first_undef_row - thisrow);
+    /* Transfer no more than fits in file */
+    rows = MIN(rows, (long) ptr->rows_in_array - thisrow);
+    if (rows <= 0)		/* this chunk might be past end of file! */
+      break;
+    byte_count = rows * bytesperrow;
+    if (writing)
+      (*ptr->b_s_info.write_backing_store) (cinfo, & ptr->b_s_info,
+					    (void FAR *) ptr->mem_buffer[i],
+					    file_offset, byte_count);
+    else
+      (*ptr->b_s_info.read_backing_store) (cinfo, & ptr->b_s_info,
+					   (void FAR *) ptr->mem_buffer[i],
+					   file_offset, byte_count);
+    file_offset += byte_count;
+  }
+}
+
+
+METHODDEF JSAMPARRAY
+access_virt_sarray (j_common_ptr cinfo, jvirt_sarray_ptr ptr,
+		    JDIMENSION start_row, JDIMENSION num_rows,
+		    boolean writable)
+/* Access the part of a virtual sample array starting at start_row */
+/* and extending for num_rows rows.  writable is true if  */
+/* caller intends to modify the accessed area. */
+{
+  JDIMENSION end_row = start_row + num_rows;
+  JDIMENSION undef_row;
+
+  /* debugging check */
+  if (end_row > ptr->rows_in_array || num_rows > ptr->maxaccess ||
+      ptr->mem_buffer == NULL)
+    ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
+
+  /* Make the desired part of the virtual array accessible */
+  if (start_row < ptr->cur_start_row ||
+      end_row > ptr->cur_start_row+ptr->rows_in_mem) {
+    if (! ptr->b_s_open)
+      ERREXIT(cinfo, JERR_VIRTUAL_BUG);
+    /* Flush old buffer contents if necessary */
+    if (ptr->dirty) {
+      do_sarray_io(cinfo, ptr, TRUE);
+      ptr->dirty = FALSE;
+    }
+    /* Decide what part of virtual array to access.
+     * Algorithm: if target address > current window, assume forward scan,
+     * load starting at target address.  If target address < current window,
+     * assume backward scan, load so that target area is top of window.
+     * Note that when switching from forward write to forward read, will have
+     * start_row = 0, so the limiting case applies and we load from 0 anyway.
+     */
+    if (start_row > ptr->cur_start_row) {
+      ptr->cur_start_row = start_row;
+    } else {
+      /* use long arithmetic here to avoid overflow & unsigned problems */
+      long ltemp;
+
+      ltemp = (long) end_row - (long) ptr->rows_in_mem;
+      if (ltemp < 0)
+	ltemp = 0;		/* don't fall off front end of file */
+      ptr->cur_start_row = (JDIMENSION) ltemp;
+    }
+    /* Read in the selected part of the array.
+     * During the initial write pass, we will do no actual read
+     * because the selected part is all undefined.
+     */
+    do_sarray_io(cinfo, ptr, FALSE);
+  }
+  /* Ensure the accessed part of the array is defined; prezero if needed.
+   * To improve locality of access, we only prezero the part of the array
+   * that the caller is about to access, not the entire in-memory array.
+   */
+  if (ptr->first_undef_row < end_row) {
+    if (ptr->first_undef_row < start_row) {
+      if (writable)		/* writer skipped over a section of array */
+	ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
+      undef_row = start_row;	/* but reader is allowed to read ahead */
+    } else {
+      undef_row = ptr->first_undef_row;
+    }
+    if (writable)
+      ptr->first_undef_row = end_row;
+    if (ptr->pre_zero) {
+      size_t bytesperrow = (size_t) ptr->samplesperrow * SIZEOF(JSAMPLE);
+      undef_row -= ptr->cur_start_row; /* make indexes relative to buffer */
+      end_row -= ptr->cur_start_row;
+      while (undef_row < end_row) {
+	jzero_far((void FAR *) ptr->mem_buffer[undef_row], bytesperrow);
+	undef_row++;
+      }
+    } else {
+      if (! writable)		/* reader looking at undefined data */
+	ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
+    }
+  }
+  /* Flag the buffer dirty if caller will write in it */
+  if (writable)
+    ptr->dirty = TRUE;
+  /* Return address of proper part of the buffer */
+  return ptr->mem_buffer + (start_row - ptr->cur_start_row);
+}
+
+
+METHODDEF JBLOCKARRAY
+access_virt_barray (j_common_ptr cinfo, jvirt_barray_ptr ptr,
+		    JDIMENSION start_row, JDIMENSION num_rows,
+		    boolean writable)
+/* Access the part of a virtual block array starting at start_row */
+/* and extending for num_rows rows.  writable is true if  */
+/* caller intends to modify the accessed area. */
+{
+  JDIMENSION end_row = start_row + num_rows;
+  JDIMENSION undef_row;
+
+  /* debugging check */
+  if (end_row > ptr->rows_in_array || num_rows > ptr->maxaccess ||
+      ptr->mem_buffer == NULL)
+    ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
+
+  /* Make the desired part of the virtual array accessible */
+  if (start_row < ptr->cur_start_row ||
+      end_row > ptr->cur_start_row+ptr->rows_in_mem) {
+    if (! ptr->b_s_open)
+      ERREXIT(cinfo, JERR_VIRTUAL_BUG);
+    /* Flush old buffer contents if necessary */
+    if (ptr->dirty) {
+      do_barray_io(cinfo, ptr, TRUE);
+      ptr->dirty = FALSE;
+    }
+    /* Decide what part of virtual array to access.
+     * Algorithm: if target address > current window, assume forward scan,
+     * load starting at target address.  If target address < current window,
+     * assume backward scan, load so that target area is top of window.
+     * Note that when switching from forward write to forward read, will have
+     * start_row = 0, so the limiting case applies and we load from 0 anyway.
+     */
+    if (start_row > ptr->cur_start_row) {
+      ptr->cur_start_row = start_row;
+    } else {
+      /* use long arithmetic here to avoid overflow & unsigned problems */
+      long ltemp;
+
+      ltemp = (long) end_row - (long) ptr->rows_in_mem;
+      if (ltemp < 0)
+	ltemp = 0;		/* don't fall off front end of file */
+      ptr->cur_start_row = (JDIMENSION) ltemp;
+    }
+    /* Read in the selected part of the array.
+     * During the initial write pass, we will do no actual read
+     * because the selected part is all undefined.
+     */
+    do_barray_io(cinfo, ptr, FALSE);
+  }
+  /* Ensure the accessed part of the array is defined; prezero if needed.
+   * To improve locality of access, we only prezero the part of the array
+   * that the caller is about to access, not the entire in-memory array.
+   */
+  if (ptr->first_undef_row < end_row) {
+    if (ptr->first_undef_row < start_row) {
+      if (writable)		/* writer skipped over a section of array */
+	ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
+      undef_row = start_row;	/* but reader is allowed to read ahead */
+    } else {
+      undef_row = ptr->first_undef_row;
+    }
+    if (writable)
+      ptr->first_undef_row = end_row;
+    if (ptr->pre_zero) {
+      size_t bytesperrow = (size_t) ptr->blocksperrow * SIZEOF(JBLOCK);
+      undef_row -= ptr->cur_start_row; /* make indexes relative to buffer */
+      end_row -= ptr->cur_start_row;
+      while (undef_row < end_row) {
+	jzero_far((void FAR *) ptr->mem_buffer[undef_row], bytesperrow);
+	undef_row++;
+      }
+    } else {
+      if (! writable)		/* reader looking at undefined data */
+	ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS);
+    }
+  }
+  /* Flag the buffer dirty if caller will write in it */
+  if (writable)
+    ptr->dirty = TRUE;
+  /* Return address of proper part of the buffer */
+  return ptr->mem_buffer + (start_row - ptr->cur_start_row);
+}
+
+
+/*
+ * Release all objects belonging to a specified pool.
+ */
+
+METHODDEF void
+free_pool (j_common_ptr cinfo, int pool_id)
+{
+  my_mem_ptr mem = (my_mem_ptr) cinfo->mem;
+  small_pool_ptr shdr_ptr;
+  large_pool_ptr lhdr_ptr;
+  size_t space_freed;
+
+  if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS)
+    ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id);	/* safety check */
+
+#ifdef MEM_STATS
+  if (cinfo->err->trace_level > 1)
+    print_mem_stats(cinfo, pool_id); /* print pool's memory usage statistics */
+#endif
+
+  /* If freeing IMAGE pool, close any virtual arrays first */
+  if (pool_id == JPOOL_IMAGE) {
+    jvirt_sarray_ptr sptr;
+    jvirt_barray_ptr bptr;
+
+    for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) {
+      if (sptr->b_s_open) {	/* there may be no backing store */
+	sptr->b_s_open = FALSE;	/* prevent recursive close if error */
+	(*sptr->b_s_info.close_backing_store) (cinfo, & sptr->b_s_info);
+      }
+    }
+    mem->virt_sarray_list = NULL;
+    for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) {
+      if (bptr->b_s_open) {	/* there may be no backing store */
+	bptr->b_s_open = FALSE;	/* prevent recursive close if error */
+	(*bptr->b_s_info.close_backing_store) (cinfo, & bptr->b_s_info);
+      }
+    }
+    mem->virt_barray_list = NULL;
+  }
+
+  /* Release large objects */
+  lhdr_ptr = mem->large_list[pool_id];
+  mem->large_list[pool_id] = NULL;
+
+  while (lhdr_ptr != NULL) {
+    large_pool_ptr next_lhdr_ptr = lhdr_ptr->hdr.next;
+    space_freed = lhdr_ptr->hdr.bytes_used +
+		  lhdr_ptr->hdr.bytes_left +
+		  SIZEOF(large_pool_hdr);
+    jpeg_free_large(cinfo, (void FAR *) lhdr_ptr, space_freed);
+    mem->total_space_allocated -= space_freed;
+    lhdr_ptr = next_lhdr_ptr;
+  }
+
+  /* Release small objects */
+  shdr_ptr = mem->small_list[pool_id];
+  mem->small_list[pool_id] = NULL;
+
+  while (shdr_ptr != NULL) {
+    small_pool_ptr next_shdr_ptr = shdr_ptr->hdr.next;
+    space_freed = shdr_ptr->hdr.bytes_used +
+		  shdr_ptr->hdr.bytes_left +
+		  SIZEOF(small_pool_hdr);
+    jpeg_free_small(cinfo, (void *) shdr_ptr, space_freed);
+    mem->total_space_allocated -= space_freed;
+    shdr_ptr = next_shdr_ptr;
+  }
+}
+
+
+/*
+ * Close up shop entirely.
+ * Note that this cannot be called unless cinfo->mem is non-NULL.
+ */
+
+METHODDEF void
+self_destruct (j_common_ptr cinfo)
+{
+  int pool;
+
+  /* Close all backing store, release all memory.
+   * Releasing pools in reverse order might help avoid fragmentation
+   * with some (brain-damaged) malloc libraries.
+   */
+  for (pool = JPOOL_NUMPOOLS-1; pool >= JPOOL_PERMANENT; pool--) {
+    free_pool(cinfo, pool);
+  }
+
+  /* Release the memory manager control block too. */
+  jpeg_free_small(cinfo, (void *) cinfo->mem, SIZEOF(my_memory_mgr));
+  cinfo->mem = NULL;		/* ensures I will be called only once */
+
+  jpeg_mem_term(cinfo);		/* system-dependent cleanup */
+}
+
+
+/*
+ * Memory manager initialization.
+ * When this is called, only the error manager pointer is valid in cinfo!
+ */
+
+GLOBAL void
+jinit_memory_mgr (j_common_ptr cinfo)
+{
+  my_mem_ptr mem;
+  long max_to_use;
+  int pool;
+  size_t test_mac;
+
+  cinfo->mem = NULL;		/* for safety if init fails */
+
+  /* Check for configuration errors.
+   * SIZEOF(ALIGN_TYPE) should be a power of 2; otherwise, it probably
+   * doesn't reflect any real hardware alignment requirement.
+   * The test is a little tricky: for X>0, X and X-1 have no one-bits
+   * in common if and only if X is a power of 2, ie has only one one-bit.
+   * Some compilers may give an "unreachable code" warning here; ignore it.
+   */
+  if ((SIZEOF(ALIGN_TYPE) & (SIZEOF(ALIGN_TYPE)-1)) != 0)
+    ERREXIT(cinfo, JERR_BAD_ALIGN_TYPE);
+  /* MAX_ALLOC_CHUNK must be representable as type size_t, and must be
+   * a multiple of SIZEOF(ALIGN_TYPE).
+   * Again, an "unreachable code" warning may be ignored here.
+   * But a "constant too large" warning means you need to fix MAX_ALLOC_CHUNK.
+   */
+  test_mac = (size_t) MAX_ALLOC_CHUNK;
+  if ((long) test_mac != MAX_ALLOC_CHUNK ||
+      (MAX_ALLOC_CHUNK % SIZEOF(ALIGN_TYPE)) != 0)
+    ERREXIT(cinfo, JERR_BAD_ALLOC_CHUNK);
+
+  max_to_use = jpeg_mem_init(cinfo); /* system-dependent initialization */
+
+  /* Attempt to allocate memory manager's control block */
+  mem = (my_mem_ptr) jpeg_get_small(cinfo, SIZEOF(my_memory_mgr));
+
+  if (mem == NULL) {
+    jpeg_mem_term(cinfo);	/* system-dependent cleanup */
+    ERREXIT1(cinfo, JERR_OUT_OF_MEMORY, 0);
+  }
+
+  /* OK, fill in the method pointers */
+  mem->pub.alloc_small = alloc_small;
+  mem->pub.alloc_large = alloc_large;
+  mem->pub.alloc_sarray = alloc_sarray;
+  mem->pub.alloc_barray = alloc_barray;
+  mem->pub.request_virt_sarray = request_virt_sarray;
+  mem->pub.request_virt_barray = request_virt_barray;
+  mem->pub.realize_virt_arrays = realize_virt_arrays;
+  mem->pub.access_virt_sarray = access_virt_sarray;
+  mem->pub.access_virt_barray = access_virt_barray;
+  mem->pub.free_pool = free_pool;
+  mem->pub.self_destruct = self_destruct;
+
+  /* Initialize working state */
+  mem->pub.max_memory_to_use = max_to_use;
+
+  for (pool = JPOOL_NUMPOOLS-1; pool >= JPOOL_PERMANENT; pool--) {
+    mem->small_list[pool] = NULL;
+    mem->large_list[pool] = NULL;
+  }
+  mem->virt_sarray_list = NULL;
+  mem->virt_barray_list = NULL;
+
+  mem->total_space_allocated = SIZEOF(my_memory_mgr);
+
+  /* Declare ourselves open for business */
+  cinfo->mem = & mem->pub;
+
+  /* Check for an environment variable JPEGMEM; if found, override the
+   * default max_memory setting from jpeg_mem_init.  Note that the
+   * surrounding application may again override this value.
+   * If your system doesn't support getenv(), define NO_GETENV to disable
+   * this feature.
+   */
+#ifndef NO_GETENV
+  { char * memenv;
+
+    if ((memenv = getenv("JPEGMEM")) != NULL) {
+      char ch = 'x';
+
+      if (sscanf(memenv, "%ld%c", &max_to_use, &ch) > 0) {
+	if (ch == 'm' || ch == 'M')
+	  max_to_use *= 1000L;
+	mem->pub.max_memory_to_use = max_to_use * 1000L;
+      }
+    }
+  }
+#endif
+
+}
diff --git a/libs/jpeg6/jmemnobs.cpp b/libs/jpeg6/jmemnobs.cpp
index e63e5e4..9bafed5 100755
--- a/libs/jpeg6/jmemnobs.cpp
+++ b/libs/jpeg6/jmemnobs.cpp
@@ -1,103 +1,103 @@
-/*

- * jmemnobs.c

- *

- * Copyright (C) 1992-1994, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file provides a really simple implementation of the system-

- * dependent portion of the JPEG memory manager.  This implementation

- * assumes that no backing-store files are needed: all required space

- * can be obtained from ri.Malloc().

- * This is very portable in the sense that it'll compile on almost anything,

- * but you'd better have lots of main memory (or virtual memory) if you want

- * to process big images.

- * Note that the max_memory_to_use option is ignored by this implementation.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-#include "jmemsys.h"		/* import the system-dependent declarations */

-

-/*

- * Memory allocation and ri.Freeing are controlled by the regular library

- * routines ri.Malloc() and ri.Free().

- */

-

-GLOBAL void *

-jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject)

-{

-  return (void *) malloc(sizeofobject);

-}

-

-GLOBAL void

-jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject)

-{

-  free(object);

-}

-

-

-/*

- * "Large" objects are treated the same as "small" ones.

- * NB: although we include FAR keywords in the routine declarations,

- * this file won't actually work in 80x86 small/medium model; at least,

- * you probably won't be able to process useful-size images in only 64KB.

- */

-

-GLOBAL void FAR *

-jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject)

-{

-  return (void FAR *) malloc(sizeofobject);

-}

-

-GLOBAL void

-jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject)

-{

-  free(object);

-}

-

-

-/*

- * This routine computes the total memory space available for allocation.

- * Here we always say, "we got all you want bud!"

- */

-

-GLOBAL long

-jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed,

-		    long max_bytes_needed, long already_allocated)

-{

-  return max_bytes_needed;

-}

-

-

-/*

- * Backing store (temporary file) management.

- * Since jpeg_mem_available always promised the moon,

- * this should never be called and we can just error out.

- */

-

-GLOBAL void

-jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info,

-			 long total_bytes_needed)

-{

-  ERREXIT(cinfo, JERR_NO_BACKING_STORE);

-}

-

-

-/*

- * These routines take care of any system-dependent initialization and

- * cleanup required.  Here, there isn't any.

- */

-

-GLOBAL long

-jpeg_mem_init (j_common_ptr cinfo)

-{

-  return 0;			/* just set max_memory_to_use to 0 */

-}

-

-GLOBAL void

-jpeg_mem_term (j_common_ptr cinfo)

-{

-  /* no work */

-}

+/*
+ * jmemnobs.c
+ *
+ * Copyright (C) 1992-1994, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file provides a really simple implementation of the system-
+ * dependent portion of the JPEG memory manager.  This implementation
+ * assumes that no backing-store files are needed: all required space
+ * can be obtained from ri.Malloc().
+ * This is very portable in the sense that it'll compile on almost anything,
+ * but you'd better have lots of main memory (or virtual memory) if you want
+ * to process big images.
+ * Note that the max_memory_to_use option is ignored by this implementation.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+#include "jmemsys.h"		/* import the system-dependent declarations */
+
+/*
+ * Memory allocation and ri.Freeing are controlled by the regular library
+ * routines ri.Malloc() and ri.Free().
+ */
+
+GLOBAL void *
+jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject)
+{
+  return (void *) malloc(sizeofobject);
+}
+
+GLOBAL void
+jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject)
+{
+  free(object);
+}
+
+
+/*
+ * "Large" objects are treated the same as "small" ones.
+ * NB: although we include FAR keywords in the routine declarations,
+ * this file won't actually work in 80x86 small/medium model; at least,
+ * you probably won't be able to process useful-size images in only 64KB.
+ */
+
+GLOBAL void FAR *
+jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject)
+{
+  return (void FAR *) malloc(sizeofobject);
+}
+
+GLOBAL void
+jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject)
+{
+  free(object);
+}
+
+
+/*
+ * This routine computes the total memory space available for allocation.
+ * Here we always say, "we got all you want bud!"
+ */
+
+GLOBAL long
+jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed,
+		    long max_bytes_needed, long already_allocated)
+{
+  return max_bytes_needed;
+}
+
+
+/*
+ * Backing store (temporary file) management.
+ * Since jpeg_mem_available always promised the moon,
+ * this should never be called and we can just error out.
+ */
+
+GLOBAL void
+jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info,
+			 long total_bytes_needed)
+{
+  ERREXIT(cinfo, JERR_NO_BACKING_STORE);
+}
+
+
+/*
+ * These routines take care of any system-dependent initialization and
+ * cleanup required.  Here, there isn't any.
+ */
+
+GLOBAL long
+jpeg_mem_init (j_common_ptr cinfo)
+{
+  return 0;			/* just set max_memory_to_use to 0 */
+}
+
+GLOBAL void
+jpeg_mem_term (j_common_ptr cinfo)
+{
+  /* no work */
+}
diff --git a/libs/jpeg6/jmemsys.h b/libs/jpeg6/jmemsys.h
index 0c7d7c1..033d29a 100755
--- a/libs/jpeg6/jmemsys.h
+++ b/libs/jpeg6/jmemsys.h
@@ -1,182 +1,182 @@
-/*

- * jmemsys.h

- *

- * Copyright (C) 1992-1994, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This include file defines the interface between the system-independent

- * and system-dependent portions of the JPEG memory manager.  No other

- * modules need include it.  (The system-independent portion is jmemmgr.c;

- * there are several different versions of the system-dependent portion.)

- *

- * This file works as-is for the system-dependent memory managers supplied

- * in the IJG distribution.  You may need to modify it if you write a

- * custom memory manager.  If system-dependent changes are needed in

- * this file, the best method is to #ifdef them based on a configuration

- * symbol supplied in jconfig.h, as we have done with USE_MSDOS_MEMMGR.

- */

-

-

-/* Short forms of external names for systems with brain-damaged linkers. */

-

-#ifdef NEED_SHORT_EXTERNAL_NAMES

-#define jpeg_get_small		jGetSmall

-#define jpeg_free_small		jFreeSmall

-#define jpeg_get_large		jGetLarge

-#define jpeg_free_large		jFreeLarge

-#define jpeg_mem_available	jMemAvail

-#define jpeg_open_backing_store	jOpenBackStore

-#define jpeg_mem_init		jMemInit

-#define jpeg_mem_term		jMemTerm

-#endif /* NEED_SHORT_EXTERNAL_NAMES */

-

-

-/*

- * These two functions are used to allocate and release small chunks of

- * memory.  (Typically the total amount requested through jpeg_get_small is

- * no more than 20K or so; this will be requested in chunks of a few K each.)

- * Behavior should be the same as for the standard library functions malloc

- * and free; in particular, jpeg_get_small must return NULL on failure.

- * On most systems, these ARE malloc and free.  jpeg_free_small is passed the

- * size of the object being freed, just in case it's needed.

- * On an 80x86 machine using small-data memory model, these manage near heap.

- */

-

-EXTERN void * jpeg_get_small JPP((j_common_ptr cinfo, size_t sizeofobject));

-EXTERN void jpeg_free_small JPP((j_common_ptr cinfo, void * object,

-				 size_t sizeofobject));

-

-/*

- * These two functions are used to allocate and release large chunks of

- * memory (up to the total free space designated by jpeg_mem_available).

- * The interface is the same as above, except that on an 80x86 machine,

- * far pointers are used.  On most other machines these are identical to

- * the jpeg_get/free_small routines; but we keep them separate anyway,

- * in case a different allocation strategy is desirable for large chunks.

- */

-

-EXTERN void FAR * jpeg_get_large JPP((j_common_ptr cinfo,size_t sizeofobject));

-EXTERN void jpeg_free_large JPP((j_common_ptr cinfo, void FAR * object,

-				 size_t sizeofobject));

-

-/*

- * The macro MAX_ALLOC_CHUNK designates the maximum number of bytes that may

- * be requested in a single call to jpeg_get_large (and jpeg_get_small for that

- * matter, but that case should never come into play).  This macro is needed

- * to model the 64Kb-segment-size limit of far addressing on 80x86 machines.

- * On those machines, we expect that jconfig.h will provide a proper value.

- * On machines with 32-bit flat address spaces, any large constant may be used.

- *

- * NB: jmemmgr.c expects that MAX_ALLOC_CHUNK will be representable as type

- * size_t and will be a multiple of sizeof(align_type).

- */

-

-#ifndef MAX_ALLOC_CHUNK		/* may be overridden in jconfig.h */

-#define MAX_ALLOC_CHUNK  1000000000L

-#endif

-

-/*

- * This routine computes the total space still available for allocation by

- * jpeg_get_large.  If more space than this is needed, backing store will be

- * used.  NOTE: any memory already allocated must not be counted.

- *

- * There is a minimum space requirement, corresponding to the minimum

- * feasible buffer sizes; jmemmgr.c will request that much space even if

- * jpeg_mem_available returns zero.  The maximum space needed, enough to hold

- * all working storage in memory, is also passed in case it is useful.

- * Finally, the total space already allocated is passed.  If no better

- * method is available, cinfo->mem->max_memory_to_use - already_allocated

- * is often a suitable calculation.

- *

- * It is OK for jpeg_mem_available to underestimate the space available

- * (that'll just lead to more backing-store access than is really necessary).

- * However, an overestimate will lead to failure.  Hence it's wise to subtract

- * a slop factor from the true available space.  5% should be enough.

- *

- * On machines with lots of virtual memory, any large constant may be returned.

- * Conversely, zero may be returned to always use the minimum amount of memory.

- */

-

-EXTERN long jpeg_mem_available JPP((j_common_ptr cinfo,

-				    long min_bytes_needed,

-				    long max_bytes_needed,

-				    long already_allocated));

-

-

-/*

- * This structure holds whatever state is needed to access a single

- * backing-store object.  The read/write/close method pointers are called

- * by jmemmgr.c to manipulate the backing-store object; all other fields

- * are private to the system-dependent backing store routines.

- */

-

-#define TEMP_NAME_LENGTH   64	/* max length of a temporary file's name */

-

-#ifdef USE_MSDOS_MEMMGR		/* DOS-specific junk */

-

-typedef unsigned short XMSH;	/* type of extended-memory handles */

-typedef unsigned short EMSH;	/* type of expanded-memory handles */

-

-typedef union {

-  short file_handle;		/* DOS file handle if it's a temp file */

-  XMSH xms_handle;		/* handle if it's a chunk of XMS */

-  EMSH ems_handle;		/* handle if it's a chunk of EMS */

-} handle_union;

-

-#endif /* USE_MSDOS_MEMMGR */

-

-typedef struct backing_store_struct * backing_store_ptr;

-

-typedef struct backing_store_struct {

-  /* Methods for reading/writing/closing this backing-store object */

-  JMETHOD(void, read_backing_store, (j_common_ptr cinfo,

-				     backing_store_ptr info,

-				     void FAR * buffer_address,

-				     long file_offset, long byte_count));

-  JMETHOD(void, write_backing_store, (j_common_ptr cinfo,

-				      backing_store_ptr info,

-				      void FAR * buffer_address,

-				      long file_offset, long byte_count));

-  JMETHOD(void, close_backing_store, (j_common_ptr cinfo,

-				      backing_store_ptr info));

-

-  /* Private fields for system-dependent backing-store management */

-#ifdef USE_MSDOS_MEMMGR

-  /* For the MS-DOS manager (jmemdos.c), we need: */

-  handle_union handle;		/* reference to backing-store storage object */

-  char temp_name[TEMP_NAME_LENGTH]; /* name if it's a file */

-#else

-  /* For a typical implementation with temp files, we need: */

-  FILE * temp_file;		/* stdio reference to temp file */

-  char temp_name[TEMP_NAME_LENGTH]; /* name of temp file */

-#endif

-} backing_store_info;

-

-/*

- * Initial opening of a backing-store object.  This must fill in the

- * read/write/close pointers in the object.  The read/write routines

- * may take an error exit if the specified maximum file size is exceeded.

- * (If jpeg_mem_available always returns a large value, this routine can

- * just take an error exit.)

- */

-

-EXTERN void jpeg_open_backing_store JPP((j_common_ptr cinfo,

-					 backing_store_ptr info,

-					 long total_bytes_needed));

-

-

-/*

- * These routines take care of any system-dependent initialization and

- * cleanup required.  jpeg_mem_init will be called before anything is

- * allocated (and, therefore, nothing in cinfo is of use except the error

- * manager pointer).  It should return a suitable default value for

- * max_memory_to_use; this may subsequently be overridden by the surrounding

- * application.  (Note that max_memory_to_use is only important if

- * jpeg_mem_available chooses to consult it ... no one else will.)

- * jpeg_mem_term may assume that all requested memory has been freed and that

- * all opened backing-store objects have been closed.

- */

-

-EXTERN long jpeg_mem_init JPP((j_common_ptr cinfo));

-EXTERN void jpeg_mem_term JPP((j_common_ptr cinfo));

+/*
+ * jmemsys.h
+ *
+ * Copyright (C) 1992-1994, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This include file defines the interface between the system-independent
+ * and system-dependent portions of the JPEG memory manager.  No other
+ * modules need include it.  (The system-independent portion is jmemmgr.c;
+ * there are several different versions of the system-dependent portion.)
+ *
+ * This file works as-is for the system-dependent memory managers supplied
+ * in the IJG distribution.  You may need to modify it if you write a
+ * custom memory manager.  If system-dependent changes are needed in
+ * this file, the best method is to #ifdef them based on a configuration
+ * symbol supplied in jconfig.h, as we have done with USE_MSDOS_MEMMGR.
+ */
+
+
+/* Short forms of external names for systems with brain-damaged linkers. */
+
+#ifdef NEED_SHORT_EXTERNAL_NAMES
+#define jpeg_get_small		jGetSmall
+#define jpeg_free_small		jFreeSmall
+#define jpeg_get_large		jGetLarge
+#define jpeg_free_large		jFreeLarge
+#define jpeg_mem_available	jMemAvail
+#define jpeg_open_backing_store	jOpenBackStore
+#define jpeg_mem_init		jMemInit
+#define jpeg_mem_term		jMemTerm
+#endif /* NEED_SHORT_EXTERNAL_NAMES */
+
+
+/*
+ * These two functions are used to allocate and release small chunks of
+ * memory.  (Typically the total amount requested through jpeg_get_small is
+ * no more than 20K or so; this will be requested in chunks of a few K each.)
+ * Behavior should be the same as for the standard library functions malloc
+ * and free; in particular, jpeg_get_small must return NULL on failure.
+ * On most systems, these ARE malloc and free.  jpeg_free_small is passed the
+ * size of the object being freed, just in case it's needed.
+ * On an 80x86 machine using small-data memory model, these manage near heap.
+ */
+
+EXTERN void * jpeg_get_small JPP((j_common_ptr cinfo, size_t sizeofobject));
+EXTERN void jpeg_free_small JPP((j_common_ptr cinfo, void * object,
+				 size_t sizeofobject));
+
+/*
+ * These two functions are used to allocate and release large chunks of
+ * memory (up to the total free space designated by jpeg_mem_available).
+ * The interface is the same as above, except that on an 80x86 machine,
+ * far pointers are used.  On most other machines these are identical to
+ * the jpeg_get/free_small routines; but we keep them separate anyway,
+ * in case a different allocation strategy is desirable for large chunks.
+ */
+
+EXTERN void FAR * jpeg_get_large JPP((j_common_ptr cinfo,size_t sizeofobject));
+EXTERN void jpeg_free_large JPP((j_common_ptr cinfo, void FAR * object,
+				 size_t sizeofobject));
+
+/*
+ * The macro MAX_ALLOC_CHUNK designates the maximum number of bytes that may
+ * be requested in a single call to jpeg_get_large (and jpeg_get_small for that
+ * matter, but that case should never come into play).  This macro is needed
+ * to model the 64Kb-segment-size limit of far addressing on 80x86 machines.
+ * On those machines, we expect that jconfig.h will provide a proper value.
+ * On machines with 32-bit flat address spaces, any large constant may be used.
+ *
+ * NB: jmemmgr.c expects that MAX_ALLOC_CHUNK will be representable as type
+ * size_t and will be a multiple of sizeof(align_type).
+ */
+
+#ifndef MAX_ALLOC_CHUNK		/* may be overridden in jconfig.h */
+#define MAX_ALLOC_CHUNK  1000000000L
+#endif
+
+/*
+ * This routine computes the total space still available for allocation by
+ * jpeg_get_large.  If more space than this is needed, backing store will be
+ * used.  NOTE: any memory already allocated must not be counted.
+ *
+ * There is a minimum space requirement, corresponding to the minimum
+ * feasible buffer sizes; jmemmgr.c will request that much space even if
+ * jpeg_mem_available returns zero.  The maximum space needed, enough to hold
+ * all working storage in memory, is also passed in case it is useful.
+ * Finally, the total space already allocated is passed.  If no better
+ * method is available, cinfo->mem->max_memory_to_use - already_allocated
+ * is often a suitable calculation.
+ *
+ * It is OK for jpeg_mem_available to underestimate the space available
+ * (that'll just lead to more backing-store access than is really necessary).
+ * However, an overestimate will lead to failure.  Hence it's wise to subtract
+ * a slop factor from the true available space.  5% should be enough.
+ *
+ * On machines with lots of virtual memory, any large constant may be returned.
+ * Conversely, zero may be returned to always use the minimum amount of memory.
+ */
+
+EXTERN long jpeg_mem_available JPP((j_common_ptr cinfo,
+				    long min_bytes_needed,
+				    long max_bytes_needed,
+				    long already_allocated));
+
+
+/*
+ * This structure holds whatever state is needed to access a single
+ * backing-store object.  The read/write/close method pointers are called
+ * by jmemmgr.c to manipulate the backing-store object; all other fields
+ * are private to the system-dependent backing store routines.
+ */
+
+#define TEMP_NAME_LENGTH   64	/* max length of a temporary file's name */
+
+#ifdef USE_MSDOS_MEMMGR		/* DOS-specific junk */
+
+typedef unsigned short XMSH;	/* type of extended-memory handles */
+typedef unsigned short EMSH;	/* type of expanded-memory handles */
+
+typedef union {
+  short file_handle;		/* DOS file handle if it's a temp file */
+  XMSH xms_handle;		/* handle if it's a chunk of XMS */
+  EMSH ems_handle;		/* handle if it's a chunk of EMS */
+} handle_union;
+
+#endif /* USE_MSDOS_MEMMGR */
+
+typedef struct backing_store_struct * backing_store_ptr;
+
+typedef struct backing_store_struct {
+  /* Methods for reading/writing/closing this backing-store object */
+  JMETHOD(void, read_backing_store, (j_common_ptr cinfo,
+				     backing_store_ptr info,
+				     void FAR * buffer_address,
+				     long file_offset, long byte_count));
+  JMETHOD(void, write_backing_store, (j_common_ptr cinfo,
+				      backing_store_ptr info,
+				      void FAR * buffer_address,
+				      long file_offset, long byte_count));
+  JMETHOD(void, close_backing_store, (j_common_ptr cinfo,
+				      backing_store_ptr info));
+
+  /* Private fields for system-dependent backing-store management */
+#ifdef USE_MSDOS_MEMMGR
+  /* For the MS-DOS manager (jmemdos.c), we need: */
+  handle_union handle;		/* reference to backing-store storage object */
+  char temp_name[TEMP_NAME_LENGTH]; /* name if it's a file */
+#else
+  /* For a typical implementation with temp files, we need: */
+  FILE * temp_file;		/* stdio reference to temp file */
+  char temp_name[TEMP_NAME_LENGTH]; /* name of temp file */
+#endif
+} backing_store_info;
+
+/*
+ * Initial opening of a backing-store object.  This must fill in the
+ * read/write/close pointers in the object.  The read/write routines
+ * may take an error exit if the specified maximum file size is exceeded.
+ * (If jpeg_mem_available always returns a large value, this routine can
+ * just take an error exit.)
+ */
+
+EXTERN void jpeg_open_backing_store JPP((j_common_ptr cinfo,
+					 backing_store_ptr info,
+					 long total_bytes_needed));
+
+
+/*
+ * These routines take care of any system-dependent initialization and
+ * cleanup required.  jpeg_mem_init will be called before anything is
+ * allocated (and, therefore, nothing in cinfo is of use except the error
+ * manager pointer).  It should return a suitable default value for
+ * max_memory_to_use; this may subsequently be overridden by the surrounding
+ * application.  (Note that max_memory_to_use is only important if
+ * jpeg_mem_available chooses to consult it ... no one else will.)
+ * jpeg_mem_term may assume that all requested memory has been freed and that
+ * all opened backing-store objects have been closed.
+ */
+
+EXTERN long jpeg_mem_init JPP((j_common_ptr cinfo));
+EXTERN void jpeg_mem_term JPP((j_common_ptr cinfo));
diff --git a/libs/jpeg6/jmorecfg.h b/libs/jpeg6/jmorecfg.h
index d451399..7e83fec 100755
--- a/libs/jpeg6/jmorecfg.h
+++ b/libs/jpeg6/jmorecfg.h
@@ -1,346 +1,346 @@
-/*

- * jmorecfg.h

- *

- * Copyright (C) 1991-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains additional configuration options that customize the

- * JPEG software for special applications or support machine-dependent

- * optimizations.  Most users will not need to touch this file.

- */

-

-

-/*

- * Define BITS_IN_JSAMPLE as either

- *   8   for 8-bit sample values (the usual setting)

- *   12  for 12-bit sample values

- * Only 8 and 12 are legal data precisions for lossy JPEG according to the

- * JPEG standard, and the IJG code does not support anything else!

- * We do not support run-time selection of data precision, sorry.

- */

-

-#define BITS_IN_JSAMPLE  8	/* use 8 or 12 */

-

-

-/*

- * Maximum number of components (color channels) allowed in JPEG image.

- * To meet the letter of the JPEG spec, set this to 255.  However, darn

- * few applications need more than 4 channels (maybe 5 for CMYK + alpha

- * mask).  We recommend 10 as a reasonable compromise; use 4 if you are

- * really short on memory.  (Each allowed component costs a hundred or so

- * bytes of storage, whether actually used in an image or not.)

- */

-

-#define MAX_COMPONENTS  10	/* maximum number of image components */

-

-

-/*

- * Basic data types.

- * You may need to change these if you have a machine with unusual data

- * type sizes; for example, "char" not 8 bits, "short" not 16 bits,

- * or "long" not 32 bits.  We don't care whether "int" is 16 or 32 bits,

- * but it had better be at least 16.

- */

-

-/* Representation of a single sample (pixel element value).

- * We frequently allocate large arrays of these, so it's important to keep

- * them small.  But if you have memory to burn and access to char or short

- * arrays is very slow on your hardware, you might want to change these.

- */

-

-#if BITS_IN_JSAMPLE == 8

-/* JSAMPLE should be the smallest type that will hold the values 0..255.

- * You can use a signed char by having GETJSAMPLE mask it with 0xFF.

- */

-

-#ifdef HAVE_UNSIGNED_CHAR

-

-typedef unsigned char JSAMPLE;

-#define GETJSAMPLE(value)  ((int) (value))

-

-#else /* not HAVE_UNSIGNED_CHAR */

-

-typedef char JSAMPLE;

-#ifdef CHAR_IS_UNSIGNED

-#define GETJSAMPLE(value)  ((int) (value))

-#else

-#define GETJSAMPLE(value)  ((int) (value) & 0xFF)

-#endif /* CHAR_IS_UNSIGNED */

-

-#endif /* HAVE_UNSIGNED_CHAR */

-

-#define MAXJSAMPLE	255

-#define CENTERJSAMPLE	128

-

-#endif /* BITS_IN_JSAMPLE == 8 */

-

-

-#if BITS_IN_JSAMPLE == 12

-/* JSAMPLE should be the smallest type that will hold the values 0..4095.

- * On nearly all machines "short" will do nicely.

- */

-

-typedef short JSAMPLE;

-#define GETJSAMPLE(value)  ((int) (value))

-

-#define MAXJSAMPLE	4095

-#define CENTERJSAMPLE	2048

-

-#endif /* BITS_IN_JSAMPLE == 12 */

-

-

-/* Representation of a DCT frequency coefficient.

- * This should be a signed value of at least 16 bits; "short" is usually OK.

- * Again, we allocate large arrays of these, but you can change to int

- * if you have memory to burn and "short" is really slow.

- */

-

-typedef short JCOEF;

-

-

-/* Compressed datastreams are represented as arrays of JOCTET.

- * These must be EXACTLY 8 bits wide, at least once they are written to

- * external storage.  Note that when using the stdio data source/destination

- * managers, this is also the data type passed to fread/fwrite.

- */

-

-#ifdef HAVE_UNSIGNED_CHAR

-

-typedef unsigned char JOCTET;

-#define GETJOCTET(value)  (value)

-

-#else /* not HAVE_UNSIGNED_CHAR */

-

-typedef char JOCTET;

-#ifdef CHAR_IS_UNSIGNED

-#define GETJOCTET(value)  (value)

-#else

-#define GETJOCTET(value)  ((value) & 0xFF)

-#endif /* CHAR_IS_UNSIGNED */

-

-#endif /* HAVE_UNSIGNED_CHAR */

-

-

-/* These typedefs are used for various table entries and so forth.

- * They must be at least as wide as specified; but making them too big

- * won't cost a huge amount of memory, so we don't provide special

- * extraction code like we did for JSAMPLE.  (In other words, these

- * typedefs live at a different point on the speed/space tradeoff curve.)

- */

-

-/* UINT8 must hold at least the values 0..255. */

-

-#ifdef HAVE_UNSIGNED_CHAR

-typedef unsigned char UINT8;

-#else /* not HAVE_UNSIGNED_CHAR */

-#ifdef CHAR_IS_UNSIGNED

-typedef char UINT8;

-#else /* not CHAR_IS_UNSIGNED */

-typedef short UINT8;

-#endif /* CHAR_IS_UNSIGNED */

-#endif /* HAVE_UNSIGNED_CHAR */

-

-/* UINT16 must hold at least the values 0..65535. */

-

-#ifdef HAVE_UNSIGNED_SHORT

-typedef unsigned short UINT16;

-#else /* not HAVE_UNSIGNED_SHORT */

-typedef unsigned int UINT16;

-#endif /* HAVE_UNSIGNED_SHORT */

-

-/* INT16 must hold at least the values -32768..32767. */

-

-#ifndef XMD_H			/* X11/xmd.h correctly defines INT16 */

-typedef short INT16;

-#endif

-

-/* INT32 must hold at least signed 32-bit values. */

-

-//#ifndef XMD_H			/* X11/xmd.h correctly defines INT32 */

-//typedef long INT32;

-//#endif

-

-/* Datatype used for image dimensions.  The JPEG standard only supports

- * images up to 64K*64K due to 16-bit fields in SOF markers.  Therefore

- * "unsigned int" is sufficient on all machines.  However, if you need to

- * handle larger images and you don't mind deviating from the spec, you

- * can change this datatype.

- */

-

-typedef unsigned int JDIMENSION;

-

-#define JPEG_MAX_DIMENSION  65500L  /* a tad under 64K to prevent overflows */

-

-

-/* These defines are used in all function definitions and extern declarations.

- * You could modify them if you need to change function linkage conventions.

- * Another application is to make all functions global for use with debuggers

- * or code profilers that require it.

- */

-

-#define METHODDEF static	/* a function called through method pointers */

-#define LOCAL	  static	/* a function used only in its module */

-#define GLOBAL			/* a function referenced thru EXTERNs */

-#define EXTERN	  extern	/* a reference to a GLOBAL function */

-

-

-/* Here is the pseudo-keyword for declaring pointers that must be "far"

- * on 80x86 machines.  Most of the specialized coding for 80x86 is handled

- * by just saying "FAR *" where such a pointer is needed.  In a few places

- * explicit coding is needed; see uses of the NEED_FAR_POINTERS symbol.

- */

-

-#ifdef NEED_FAR_POINTERS

-#undef FAR

-#define FAR  far

-#else

-#undef FAR

-#define FAR

-#endif

-

-

-/*

- * On a few systems, type boolean and/or its values FALSE, TRUE may appear

- * in standard header files.  Or you may have conflicts with application-

- * specific header files that you want to include together with these files.

- * Defining HAVE_BOOLEAN before including jpeglib.h should make it work.

- */

-

-//#ifndef HAVE_BOOLEAN

-//typedef int boolean;

-//#endif

-#ifndef FALSE			/* in case these macros already exist */

-#define FALSE	0		/* values of boolean */

-#endif

-#ifndef TRUE

-#define TRUE	1

-#endif

-

-

-/*

- * The remaining options affect code selection within the JPEG library,

- * but they don't need to be visible to most applications using the library.

- * To minimize application namespace pollution, the symbols won't be

- * defined unless JPEG_INTERNALS or JPEG_INTERNAL_OPTIONS has been defined.

- */

-

-#ifdef JPEG_INTERNALS

-#define JPEG_INTERNAL_OPTIONS

-#endif

-

-#ifdef JPEG_INTERNAL_OPTIONS

-

-

-/*

- * These defines indicate whether to include various optional functions.

- * Undefining some of these symbols will produce a smaller but less capable

- * library.  Note that you can leave certain source files out of the

- * compilation/linking process if you've #undef'd the corresponding symbols.

- * (You may HAVE to do that if your compiler doesn't like null source files.)

- */

-

-/* Arithmetic coding is unsupported for legal reasons.  Complaints to IBM. */

-

-/* Capability options common to encoder and decoder: */

-

-#undef DCT_ISLOW_SUPPORTED	/* slow but accurate integer algorithm */

-#undef DCT_IFAST_SUPPORTED	/* faster, less accurate integer method */

-#define DCT_FLOAT_SUPPORTED	/* floating-point: accurate, fast on fast HW */

-

-/* Encoder capability options: */

-

-#undef  C_ARITH_CODING_SUPPORTED    /* Arithmetic coding back end? */

-#define C_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */

-#define C_PROGRESSIVE_SUPPORTED	    /* Progressive JPEG? (Requires MULTISCAN)*/

-#define ENTROPY_OPT_SUPPORTED	    /* Optimization of entropy coding parms? */

-/* Note: if you selected 12-bit data precision, it is dangerous to turn off

- * ENTROPY_OPT_SUPPORTED.  The standard Huffman tables are only good for 8-bit

- * precision, so jchuff.c normally uses entropy optimization to compute

- * usable tables for higher precision.  If you don't want to do optimization,

- * you'll have to supply different default Huffman tables.

- * The exact same statements apply for progressive JPEG: the default tables

- * don't work for progressive mode.  (This may get fixed, however.)

- */

-#define INPUT_SMOOTHING_SUPPORTED   /* Input image smoothing option? */

-

-/* Decoder capability options: */

-

-#undef  D_ARITH_CODING_SUPPORTED    /* Arithmetic coding back end? */

-#undef D_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */

-#undef D_PROGRESSIVE_SUPPORTED	    /* Progressive JPEG? (Requires MULTISCAN)*/

-#undef BLOCK_SMOOTHING_SUPPORTED   /* Block smoothing? (Progressive only) */

-#undef IDCT_SCALING_SUPPORTED	    /* Output rescaling via IDCT? */

-#undef  UPSAMPLE_SCALING_SUPPORTED  /* Output rescaling at upsample stage? */

-#undef UPSAMPLE_MERGING_SUPPORTED  /* Fast path for sloppy upsampling? */

-#undef QUANT_1PASS_SUPPORTED	    /* 1-pass color quantization? */

-#undef QUANT_2PASS_SUPPORTED	    /* 2-pass color quantization? */

-

-/* more capability options later, no doubt */

-

-

-/*

- * Ordering of RGB data in scanlines passed to or from the application.

- * If your application wants to deal with data in the order B,G,R, just

- * change these macros.  You can also deal with formats such as R,G,B,X

- * (one extra byte per pixel) by changing RGB_PIXELSIZE.  Note that changing

- * the offsets will also change the order in which colormap data is organized.

- * RESTRICTIONS:

- * 1. The sample applications cjpeg,djpeg do NOT support modified RGB formats.

- * 2. These macros only affect RGB<=>YCbCr color conversion, so they are not

- *    useful if you are using JPEG color spaces other than YCbCr or grayscale.

- * 3. The color quantizer modules will not behave desirably if RGB_PIXELSIZE

- *    is not 3 (they don't understand about dummy color components!).  So you

- *    can't use color quantization if you change that value.

- */

-

-#define RGB_RED		0	/* Offset of Red in an RGB scanline element */

-#define RGB_GREEN	1	/* Offset of Green */

-#define RGB_BLUE	2	/* Offset of Blue */

-#define RGB_PIXELSIZE	4	/* JSAMPLEs per RGB scanline element */

-

-

-/* Definitions for speed-related optimizations. */

-

-

-/* If your compiler supports inline functions, define INLINE

- * as the inline keyword; otherwise define it as empty.

- */

-

-#ifndef INLINE

-#ifdef __GNUC__			/* for instance, GNU C knows about inline */

-#define INLINE __inline__

-#endif

-#ifndef INLINE

-#define INLINE			/* default is to define it as empty */

-#endif

-#endif

-

-

-/* On some machines (notably 68000 series) "int" is 32 bits, but multiplying

- * two 16-bit shorts is faster than multiplying two ints.  Define MULTIPLIER

- * as short on such a machine.  MULTIPLIER must be at least 16 bits wide.

- */

-

-#ifndef MULTIPLIER

-#define MULTIPLIER  int		/* type for fastest integer multiply */

-#endif

-

-

-/* FAST_FLOAT should be either float or double, whichever is done faster

- * by your compiler.  (Note that this type is only used in the floating point

- * DCT routines, so it only matters if you've defined DCT_FLOAT_SUPPORTED.)

- * Typically, float is faster in ANSI C compilers, while double is faster in

- * pre-ANSI compilers (because they insist on converting to double anyway).

- * The code below therefore chooses float if we have ANSI-style prototypes.

- */

-

-#ifndef FAST_FLOAT

-#ifdef HAVE_PROTOTYPES

-#define FAST_FLOAT  float

-#else

-#define FAST_FLOAT  double

-#endif

-#endif

-

-#endif /* JPEG_INTERNAL_OPTIONS */

+/*
+ * jmorecfg.h
+ *
+ * Copyright (C) 1991-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains additional configuration options that customize the
+ * JPEG software for special applications or support machine-dependent
+ * optimizations.  Most users will not need to touch this file.
+ */
+
+
+/*
+ * Define BITS_IN_JSAMPLE as either
+ *   8   for 8-bit sample values (the usual setting)
+ *   12  for 12-bit sample values
+ * Only 8 and 12 are legal data precisions for lossy JPEG according to the
+ * JPEG standard, and the IJG code does not support anything else!
+ * We do not support run-time selection of data precision, sorry.
+ */
+
+#define BITS_IN_JSAMPLE  8	/* use 8 or 12 */
+
+
+/*
+ * Maximum number of components (color channels) allowed in JPEG image.
+ * To meet the letter of the JPEG spec, set this to 255.  However, darn
+ * few applications need more than 4 channels (maybe 5 for CMYK + alpha
+ * mask).  We recommend 10 as a reasonable compromise; use 4 if you are
+ * really short on memory.  (Each allowed component costs a hundred or so
+ * bytes of storage, whether actually used in an image or not.)
+ */
+
+#define MAX_COMPONENTS  10	/* maximum number of image components */
+
+
+/*
+ * Basic data types.
+ * You may need to change these if you have a machine with unusual data
+ * type sizes; for example, "char" not 8 bits, "short" not 16 bits,
+ * or "long" not 32 bits.  We don't care whether "int" is 16 or 32 bits,
+ * but it had better be at least 16.
+ */
+
+/* Representation of a single sample (pixel element value).
+ * We frequently allocate large arrays of these, so it's important to keep
+ * them small.  But if you have memory to burn and access to char or short
+ * arrays is very slow on your hardware, you might want to change these.
+ */
+
+#if BITS_IN_JSAMPLE == 8
+/* JSAMPLE should be the smallest type that will hold the values 0..255.
+ * You can use a signed char by having GETJSAMPLE mask it with 0xFF.
+ */
+
+#ifdef HAVE_UNSIGNED_CHAR
+
+typedef unsigned char JSAMPLE;
+#define GETJSAMPLE(value)  ((int) (value))
+
+#else /* not HAVE_UNSIGNED_CHAR */
+
+typedef char JSAMPLE;
+#ifdef CHAR_IS_UNSIGNED
+#define GETJSAMPLE(value)  ((int) (value))
+#else
+#define GETJSAMPLE(value)  ((int) (value) & 0xFF)
+#endif /* CHAR_IS_UNSIGNED */
+
+#endif /* HAVE_UNSIGNED_CHAR */
+
+#define MAXJSAMPLE	255
+#define CENTERJSAMPLE	128
+
+#endif /* BITS_IN_JSAMPLE == 8 */
+
+
+#if BITS_IN_JSAMPLE == 12
+/* JSAMPLE should be the smallest type that will hold the values 0..4095.
+ * On nearly all machines "short" will do nicely.
+ */
+
+typedef short JSAMPLE;
+#define GETJSAMPLE(value)  ((int) (value))
+
+#define MAXJSAMPLE	4095
+#define CENTERJSAMPLE	2048
+
+#endif /* BITS_IN_JSAMPLE == 12 */
+
+
+/* Representation of a DCT frequency coefficient.
+ * This should be a signed value of at least 16 bits; "short" is usually OK.
+ * Again, we allocate large arrays of these, but you can change to int
+ * if you have memory to burn and "short" is really slow.
+ */
+
+typedef short JCOEF;
+
+
+/* Compressed datastreams are represented as arrays of JOCTET.
+ * These must be EXACTLY 8 bits wide, at least once they are written to
+ * external storage.  Note that when using the stdio data source/destination
+ * managers, this is also the data type passed to fread/fwrite.
+ */
+
+#ifdef HAVE_UNSIGNED_CHAR
+
+typedef unsigned char JOCTET;
+#define GETJOCTET(value)  (value)
+
+#else /* not HAVE_UNSIGNED_CHAR */
+
+typedef char JOCTET;
+#ifdef CHAR_IS_UNSIGNED
+#define GETJOCTET(value)  (value)
+#else
+#define GETJOCTET(value)  ((value) & 0xFF)
+#endif /* CHAR_IS_UNSIGNED */
+
+#endif /* HAVE_UNSIGNED_CHAR */
+
+
+/* These typedefs are used for various table entries and so forth.
+ * They must be at least as wide as specified; but making them too big
+ * won't cost a huge amount of memory, so we don't provide special
+ * extraction code like we did for JSAMPLE.  (In other words, these
+ * typedefs live at a different point on the speed/space tradeoff curve.)
+ */
+
+/* UINT8 must hold at least the values 0..255. */
+
+#ifdef HAVE_UNSIGNED_CHAR
+typedef unsigned char UINT8;
+#else /* not HAVE_UNSIGNED_CHAR */
+#ifdef CHAR_IS_UNSIGNED
+typedef char UINT8;
+#else /* not CHAR_IS_UNSIGNED */
+typedef short UINT8;
+#endif /* CHAR_IS_UNSIGNED */
+#endif /* HAVE_UNSIGNED_CHAR */
+
+/* UINT16 must hold at least the values 0..65535. */
+
+#ifdef HAVE_UNSIGNED_SHORT
+typedef unsigned short UINT16;
+#else /* not HAVE_UNSIGNED_SHORT */
+typedef unsigned int UINT16;
+#endif /* HAVE_UNSIGNED_SHORT */
+
+/* INT16 must hold at least the values -32768..32767. */
+
+#ifndef XMD_H			/* X11/xmd.h correctly defines INT16 */
+typedef short INT16;
+#endif
+
+/* INT32 must hold at least signed 32-bit values. */
+
+//#ifndef XMD_H			/* X11/xmd.h correctly defines INT32 */
+//typedef long INT32;
+//#endif
+
+/* Datatype used for image dimensions.  The JPEG standard only supports
+ * images up to 64K*64K due to 16-bit fields in SOF markers.  Therefore
+ * "unsigned int" is sufficient on all machines.  However, if you need to
+ * handle larger images and you don't mind deviating from the spec, you
+ * can change this datatype.
+ */
+
+typedef unsigned int JDIMENSION;
+
+#define JPEG_MAX_DIMENSION  65500L  /* a tad under 64K to prevent overflows */
+
+
+/* These defines are used in all function definitions and extern declarations.
+ * You could modify them if you need to change function linkage conventions.
+ * Another application is to make all functions global for use with debuggers
+ * or code profilers that require it.
+ */
+
+#define METHODDEF static	/* a function called through method pointers */
+#define LOCAL	  static	/* a function used only in its module */
+#define GLOBAL			/* a function referenced thru EXTERNs */
+#define EXTERN	  extern	/* a reference to a GLOBAL function */
+
+
+/* Here is the pseudo-keyword for declaring pointers that must be "far"
+ * on 80x86 machines.  Most of the specialized coding for 80x86 is handled
+ * by just saying "FAR *" where such a pointer is needed.  In a few places
+ * explicit coding is needed; see uses of the NEED_FAR_POINTERS symbol.
+ */
+
+#ifdef NEED_FAR_POINTERS
+#undef FAR
+#define FAR  far
+#else
+#undef FAR
+#define FAR
+#endif
+
+
+/*
+ * On a few systems, type boolean and/or its values FALSE, TRUE may appear
+ * in standard header files.  Or you may have conflicts with application-
+ * specific header files that you want to include together with these files.
+ * Defining HAVE_BOOLEAN before including jpeglib.h should make it work.
+ */
+
+//#ifndef HAVE_BOOLEAN
+//typedef int boolean;
+//#endif
+#ifndef FALSE			/* in case these macros already exist */
+#define FALSE	0		/* values of boolean */
+#endif
+#ifndef TRUE
+#define TRUE	1
+#endif
+
+
+/*
+ * The remaining options affect code selection within the JPEG library,
+ * but they don't need to be visible to most applications using the library.
+ * To minimize application namespace pollution, the symbols won't be
+ * defined unless JPEG_INTERNALS or JPEG_INTERNAL_OPTIONS has been defined.
+ */
+
+#ifdef JPEG_INTERNALS
+#define JPEG_INTERNAL_OPTIONS
+#endif
+
+#ifdef JPEG_INTERNAL_OPTIONS
+
+
+/*
+ * These defines indicate whether to include various optional functions.
+ * Undefining some of these symbols will produce a smaller but less capable
+ * library.  Note that you can leave certain source files out of the
+ * compilation/linking process if you've #undef'd the corresponding symbols.
+ * (You may HAVE to do that if your compiler doesn't like null source files.)
+ */
+
+/* Arithmetic coding is unsupported for legal reasons.  Complaints to IBM. */
+
+/* Capability options common to encoder and decoder: */
+
+#undef DCT_ISLOW_SUPPORTED	/* slow but accurate integer algorithm */
+#undef DCT_IFAST_SUPPORTED	/* faster, less accurate integer method */
+#define DCT_FLOAT_SUPPORTED	/* floating-point: accurate, fast on fast HW */
+
+/* Encoder capability options: */
+
+#undef  C_ARITH_CODING_SUPPORTED    /* Arithmetic coding back end? */
+#define C_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */
+#define C_PROGRESSIVE_SUPPORTED	    /* Progressive JPEG? (Requires MULTISCAN)*/
+#define ENTROPY_OPT_SUPPORTED	    /* Optimization of entropy coding parms? */
+/* Note: if you selected 12-bit data precision, it is dangerous to turn off
+ * ENTROPY_OPT_SUPPORTED.  The standard Huffman tables are only good for 8-bit
+ * precision, so jchuff.c normally uses entropy optimization to compute
+ * usable tables for higher precision.  If you don't want to do optimization,
+ * you'll have to supply different default Huffman tables.
+ * The exact same statements apply for progressive JPEG: the default tables
+ * don't work for progressive mode.  (This may get fixed, however.)
+ */
+#define INPUT_SMOOTHING_SUPPORTED   /* Input image smoothing option? */
+
+/* Decoder capability options: */
+
+#undef  D_ARITH_CODING_SUPPORTED    /* Arithmetic coding back end? */
+#undef D_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */
+#undef D_PROGRESSIVE_SUPPORTED	    /* Progressive JPEG? (Requires MULTISCAN)*/
+#undef BLOCK_SMOOTHING_SUPPORTED   /* Block smoothing? (Progressive only) */
+#undef IDCT_SCALING_SUPPORTED	    /* Output rescaling via IDCT? */
+#undef  UPSAMPLE_SCALING_SUPPORTED  /* Output rescaling at upsample stage? */
+#undef UPSAMPLE_MERGING_SUPPORTED  /* Fast path for sloppy upsampling? */
+#undef QUANT_1PASS_SUPPORTED	    /* 1-pass color quantization? */
+#undef QUANT_2PASS_SUPPORTED	    /* 2-pass color quantization? */
+
+/* more capability options later, no doubt */
+
+
+/*
+ * Ordering of RGB data in scanlines passed to or from the application.
+ * If your application wants to deal with data in the order B,G,R, just
+ * change these macros.  You can also deal with formats such as R,G,B,X
+ * (one extra byte per pixel) by changing RGB_PIXELSIZE.  Note that changing
+ * the offsets will also change the order in which colormap data is organized.
+ * RESTRICTIONS:
+ * 1. The sample applications cjpeg,djpeg do NOT support modified RGB formats.
+ * 2. These macros only affect RGB<=>YCbCr color conversion, so they are not
+ *    useful if you are using JPEG color spaces other than YCbCr or grayscale.
+ * 3. The color quantizer modules will not behave desirably if RGB_PIXELSIZE
+ *    is not 3 (they don't understand about dummy color components!).  So you
+ *    can't use color quantization if you change that value.
+ */
+
+#define RGB_RED		0	/* Offset of Red in an RGB scanline element */
+#define RGB_GREEN	1	/* Offset of Green */
+#define RGB_BLUE	2	/* Offset of Blue */
+#define RGB_PIXELSIZE	4	/* JSAMPLEs per RGB scanline element */
+
+
+/* Definitions for speed-related optimizations. */
+
+
+/* If your compiler supports inline functions, define INLINE
+ * as the inline keyword; otherwise define it as empty.
+ */
+
+#ifndef INLINE
+#ifdef __GNUC__			/* for instance, GNU C knows about inline */
+#define INLINE __inline__
+#endif
+#ifndef INLINE
+#define INLINE			/* default is to define it as empty */
+#endif
+#endif
+
+
+/* On some machines (notably 68000 series) "int" is 32 bits, but multiplying
+ * two 16-bit shorts is faster than multiplying two ints.  Define MULTIPLIER
+ * as short on such a machine.  MULTIPLIER must be at least 16 bits wide.
+ */
+
+#ifndef MULTIPLIER
+#define MULTIPLIER  int		/* type for fastest integer multiply */
+#endif
+
+
+/* FAST_FLOAT should be either float or double, whichever is done faster
+ * by your compiler.  (Note that this type is only used in the floating point
+ * DCT routines, so it only matters if you've defined DCT_FLOAT_SUPPORTED.)
+ * Typically, float is faster in ANSI C compilers, while double is faster in
+ * pre-ANSI compilers (because they insist on converting to double anyway).
+ * The code below therefore chooses float if we have ANSI-style prototypes.
+ */
+
+#ifndef FAST_FLOAT
+#ifdef HAVE_PROTOTYPES
+#define FAST_FLOAT  float
+#else
+#define FAST_FLOAT  double
+#endif
+#endif
+
+#endif /* JPEG_INTERNAL_OPTIONS */
diff --git a/libs/jpeg6/jpeg6.vcproj b/libs/jpeg6/jpeg6.vcproj
index f17e134..ef6f2ab 100755
--- a/libs/jpeg6/jpeg6.vcproj
+++ b/libs/jpeg6/jpeg6.vcproj
@@ -1,603 +1,603 @@
-<?xml version="1.0" encoding="Windows-1252"?>

-<VisualStudioProject

-	ProjectType="Visual C++"

-	Version="7.10"

-	Name="jpeg6"

-	SccProjectName="&quot;$/source/q3radiant&quot;, FEFAAAAA"

-	SccLocalPath="..\..\q3radiant">

-	<Platforms>

-		<Platform

-			Name="Win32"/>

-	</Platforms>

-	<Configurations>

-		<Configuration

-			Name="Release|Win32"

-			OutputDirectory=".\Release"

-			IntermediateDirectory=".\Release"

-			ConfigurationType="4"

-			UseOfMFC="0"

-			ATLMinimizesCRunTimeLibraryUsage="FALSE"

-			CharacterSet="2">

-			<Tool

-				Name="VCCLCompilerTool"

-				Optimization="2"

-				InlineFunctionExpansion="1"

-				AdditionalIncludeDirectories=".."

-				PreprocessorDefinitions="WIN32;NDEBUG;_LIB"

-				StringPooling="TRUE"

-				RuntimeLibrary="0"

-				EnableFunctionLevelLinking="TRUE"

-				RuntimeTypeInfo="TRUE"

-				UsePrecompiledHeader="2"

-				PrecompiledHeaderFile=".\Release/jpeg6.pch"

-				AssemblerListingLocation=".\Release/"

-				ObjectFile=".\Release/"

-				ProgramDataBaseFileName=".\Release/"

-				WarningLevel="3"

-				SuppressStartupBanner="TRUE"

-				CompileAs="0"/>

-			<Tool

-				Name="VCCustomBuildTool"/>

-			<Tool

-				Name="VCLibrarianTool"

-				OutputFile="..\jpeg6.lib"

-				SuppressStartupBanner="TRUE"/>

-			<Tool

-				Name="VCMIDLTool"/>

-			<Tool

-				Name="VCPostBuildEventTool"/>

-			<Tool

-				Name="VCPreBuildEventTool"/>

-			<Tool

-				Name="VCPreLinkEventTool"/>

-			<Tool

-				Name="VCResourceCompilerTool"

-				PreprocessorDefinitions="NDEBUG"

-				Culture="1033"/>

-			<Tool

-				Name="VCWebServiceProxyGeneratorTool"/>

-			<Tool

-				Name="VCXMLDataGeneratorTool"/>

-			<Tool

-				Name="VCManagedWrapperGeneratorTool"/>

-			<Tool

-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>

-		</Configuration>

-		<Configuration

-			Name="Debug|Win32"

-			OutputDirectory=".\Debug"

-			IntermediateDirectory=".\Debug"

-			ConfigurationType="4"

-			UseOfMFC="0"

-			ATLMinimizesCRunTimeLibraryUsage="FALSE"

-			CharacterSet="2">

-			<Tool

-				Name="VCCLCompilerTool"

-				Optimization="0"

-				AdditionalIncludeDirectories=".."

-				PreprocessorDefinitions="WIN32;_DEBUG;_LIB"

-				BasicRuntimeChecks="3"

-				RuntimeLibrary="1"

-				RuntimeTypeInfo="TRUE"

-				UsePrecompiledHeader="2"

-				PrecompiledHeaderFile=".\Debug/jpeg6.pch"

-				AssemblerListingLocation=".\Debug/"

-				ObjectFile=".\Debug/"

-				ProgramDataBaseFileName=".\Debug/"

-				WarningLevel="3"

-				SuppressStartupBanner="TRUE"

-				DebugInformationFormat="4"

-				CompileAs="0"/>

-			<Tool

-				Name="VCCustomBuildTool"/>

-			<Tool

-				Name="VCLibrarianTool"

-				OutputFile="..\jpeg6d.lib"

-				SuppressStartupBanner="TRUE"/>

-			<Tool

-				Name="VCMIDLTool"/>

-			<Tool

-				Name="VCPostBuildEventTool"/>

-			<Tool

-				Name="VCPreBuildEventTool"/>

-			<Tool

-				Name="VCPreLinkEventTool"/>

-			<Tool

-				Name="VCResourceCompilerTool"

-				PreprocessorDefinitions="_DEBUG"

-				Culture="1033"/>

-			<Tool

-				Name="VCWebServiceProxyGeneratorTool"/>

-			<Tool

-				Name="VCXMLDataGeneratorTool"/>

-			<Tool

-				Name="VCManagedWrapperGeneratorTool"/>

-			<Tool

-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>

-		</Configuration>

-	</Configurations>

-	<References>

-	</References>

-	<Files>

-		<Filter

-			Name="Source Files"

-			Filter="cpp;c;cxx;rc;def;r;odl;idl;hpj;bat">

-			<File

-				RelativePath="jcomapi.cpp">

-				<FileConfiguration

-					Name="Release|Win32">

-					<Tool

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-						Optimization="2"

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-				</FileConfiguration>

-				<FileConfiguration

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+				RelativePath="jdct.h">
+			</File>
+			<File
+				RelativePath="jdhuff.h">
+			</File>
+			<File
+				RelativePath="jerror.h">
+			</File>
+			<File
+				RelativePath="jinclude.h">
+			</File>
+			<File
+				RelativePath="jmemsys.h">
+			</File>
+			<File
+				RelativePath="jmorecfg.h">
+			</File>
+			<File
+				RelativePath="jpegint.h">
+			</File>
+			<File
+				RelativePath="jversion.h">
+			</File>
+		</Filter>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>
diff --git a/libs/jpeg6/jpegint.h b/libs/jpeg6/jpegint.h
index b3b6a6d..ab5bee2 100755
--- a/libs/jpeg6/jpegint.h
+++ b/libs/jpeg6/jpegint.h
@@ -1,388 +1,388 @@
-/*

- * jpegint.h

- *

- * Copyright (C) 1991-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file provides common declarations for the various JPEG modules.

- * These declarations are considered internal to the JPEG library; most

- * applications using the library shouldn't need to include this file.

- */

-

-

-/* Declarations for both compression & decompression */

-

-typedef enum {			/* Operating modes for buffer controllers */

-	JBUF_PASS_THRU,		/* Plain stripwise operation */

-	/* Remaining modes require a full-image buffer to have been created */

-	JBUF_SAVE_SOURCE,	/* Run source subobject only, save output */

-	JBUF_CRANK_DEST,	/* Run dest subobject only, using saved data */

-	JBUF_SAVE_AND_PASS	/* Run both subobjects, save output */

-} J_BUF_MODE;

-

-/* Values of global_state field (jdapi.c has some dependencies on ordering!) */

-#define CSTATE_START	100	/* after create_compress */

-#define CSTATE_SCANNING	101	/* start_compress done, write_scanlines OK */

-#define CSTATE_RAW_OK	102	/* start_compress done, write_raw_data OK */

-#define CSTATE_WRCOEFS	103	/* jpeg_write_coefficients done */

-#define DSTATE_START	200	/* after create_decompress */

-#define DSTATE_INHEADER	201	/* reading header markers, no SOS yet */

-#define DSTATE_READY	202	/* found SOS, ready for start_decompress */

-#define DSTATE_PRELOAD	203	/* reading multiscan file in start_decompress*/

-#define DSTATE_PRESCAN	204	/* performing dummy pass for 2-pass quant */

-#define DSTATE_SCANNING	205	/* start_decompress done, read_scanlines OK */

-#define DSTATE_RAW_OK	206	/* start_decompress done, read_raw_data OK */

-#define DSTATE_BUFIMAGE	207	/* expecting jpeg_start_output */

-#define DSTATE_BUFPOST	208	/* looking for SOS/EOI in jpeg_finish_output */

-#define DSTATE_RDCOEFS	209	/* reading file in jpeg_read_coefficients */

-#define DSTATE_STOPPING	210	/* looking for EOI in jpeg_finish_decompress */

-

-

-/* Declarations for compression modules */

-

-/* Master control module */

-struct jpeg_comp_master {

-  JMETHOD(void, prepare_for_pass, (j_compress_ptr cinfo));

-  JMETHOD(void, pass_startup, (j_compress_ptr cinfo));

-  JMETHOD(void, finish_pass, (j_compress_ptr cinfo));

-

-  /* State variables made visible to other modules */

-  boolean call_pass_startup;	/* True if pass_startup must be called */

-  boolean is_last_pass;		/* True during last pass */

-};

-

-/* Main buffer control (downsampled-data buffer) */

-struct jpeg_c_main_controller {

-  JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode));

-  JMETHOD(void, process_data, (j_compress_ptr cinfo,

-			       JSAMPARRAY input_buf, JDIMENSION *in_row_ctr,

-			       JDIMENSION in_rows_avail));

-};

-

-/* Compression preprocessing (downsampling input buffer control) */

-struct jpeg_c_prep_controller {

-  JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode));

-  JMETHOD(void, pre_process_data, (j_compress_ptr cinfo,

-				   JSAMPARRAY input_buf,

-				   JDIMENSION *in_row_ctr,

-				   JDIMENSION in_rows_avail,

-				   JSAMPIMAGE output_buf,

-				   JDIMENSION *out_row_group_ctr,

-				   JDIMENSION out_row_groups_avail));

-};

-

-/* Coefficient buffer control */

-struct jpeg_c_coef_controller {

-  JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode));

-  JMETHOD(boolean, compress_data, (j_compress_ptr cinfo,

-				   JSAMPIMAGE input_buf));

-};

-

-/* Colorspace conversion */

-struct jpeg_color_converter {

-  JMETHOD(void, start_pass, (j_compress_ptr cinfo));

-  JMETHOD(void, color_convert, (j_compress_ptr cinfo,

-				JSAMPARRAY input_buf, JSAMPIMAGE output_buf,

-				JDIMENSION output_row, int num_rows));

-};

-

-/* Downsampling */

-struct jpeg_downsampler {

-  JMETHOD(void, start_pass, (j_compress_ptr cinfo));

-  JMETHOD(void, downsample, (j_compress_ptr cinfo,

-			     JSAMPIMAGE input_buf, JDIMENSION in_row_index,

-			     JSAMPIMAGE output_buf,

-			     JDIMENSION out_row_group_index));

-

-  boolean need_context_rows;	/* TRUE if need rows above & below */

-};

-

-/* Forward DCT (also controls coefficient quantization) */

-struct jpeg_forward_dct {

-  JMETHOD(void, start_pass, (j_compress_ptr cinfo));

-  /* perhaps this should be an array??? */

-  JMETHOD(void, forward_DCT, (j_compress_ptr cinfo,

-			      jpeg_component_info * compptr,

-			      JSAMPARRAY sample_data, JBLOCKROW coef_blocks,

-			      JDIMENSION start_row, JDIMENSION start_col,

-			      JDIMENSION num_blocks));

-};

-

-/* Entropy encoding */

-struct jpeg_entropy_encoder {

-  JMETHOD(void, start_pass, (j_compress_ptr cinfo, boolean gather_statistics));

-  JMETHOD(boolean, encode_mcu, (j_compress_ptr cinfo, JBLOCKROW *MCU_data));

-  JMETHOD(void, finish_pass, (j_compress_ptr cinfo));

-};

-

-/* Marker writing */

-struct jpeg_marker_writer {

-  /* write_any_marker is exported for use by applications */

-  /* Probably only COM and APPn markers should be written */

-  JMETHOD(void, write_any_marker, (j_compress_ptr cinfo, int marker,

-				   const JOCTET *dataptr, unsigned int datalen));

-  JMETHOD(void, write_file_header, (j_compress_ptr cinfo));

-  JMETHOD(void, write_frame_header, (j_compress_ptr cinfo));

-  JMETHOD(void, write_scan_header, (j_compress_ptr cinfo));

-  JMETHOD(void, write_file_trailer, (j_compress_ptr cinfo));

-  JMETHOD(void, write_tables_only, (j_compress_ptr cinfo));

-};

-

-

-/* Declarations for decompression modules */

-

-/* Master control module */

-struct jpeg_decomp_master {

-  JMETHOD(void, prepare_for_output_pass, (j_decompress_ptr cinfo));

-  JMETHOD(void, finish_output_pass, (j_decompress_ptr cinfo));

-

-  /* State variables made visible to other modules */

-  boolean is_dummy_pass;	/* True during 1st pass for 2-pass quant */

-};

-

-/* Input control module */

-struct jpeg_input_controller {

-  JMETHOD(int, consume_input, (j_decompress_ptr cinfo));

-  JMETHOD(void, reset_input_controller, (j_decompress_ptr cinfo));

-  JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo));

-  JMETHOD(void, finish_input_pass, (j_decompress_ptr cinfo));

-

-  /* State variables made visible to other modules */

-  boolean has_multiple_scans;	/* True if file has multiple scans */

-  boolean eoi_reached;		/* True when EOI has been consumed */

-};

-

-/* Main buffer control (downsampled-data buffer) */

-struct jpeg_d_main_controller {

-  JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode));

-  JMETHOD(void, process_data, (j_decompress_ptr cinfo,

-			       JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,

-			       JDIMENSION out_rows_avail));

-};

-

-/* Coefficient buffer control */

-struct jpeg_d_coef_controller {

-  JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo));

-  JMETHOD(int, consume_data, (j_decompress_ptr cinfo));

-  JMETHOD(void, start_output_pass, (j_decompress_ptr cinfo));

-  JMETHOD(int, decompress_data, (j_decompress_ptr cinfo,

-				 JSAMPIMAGE output_buf));

-  /* Pointer to array of coefficient virtual arrays, or NULL if none */

-  jvirt_barray_ptr *coef_arrays;

-};

-

-/* Decompression postprocessing (color quantization buffer control) */

-struct jpeg_d_post_controller {

-  JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode));

-  JMETHOD(void, post_process_data, (j_decompress_ptr cinfo,

-				    JSAMPIMAGE input_buf,

-				    JDIMENSION *in_row_group_ctr,

-				    JDIMENSION in_row_groups_avail,

-				    JSAMPARRAY output_buf,

-				    JDIMENSION *out_row_ctr,

-				    JDIMENSION out_rows_avail));

-};

-

-/* Marker reading & parsing */

-struct jpeg_marker_reader {

-  JMETHOD(void, reset_marker_reader, (j_decompress_ptr cinfo));

-  /* Read markers until SOS or EOI.

-   * Returns same codes as are defined for jpeg_consume_input:

-   * JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI.

-   */

-  JMETHOD(int, read_markers, (j_decompress_ptr cinfo));

-  /* Read a restart marker --- exported for use by entropy decoder only */

-  jpeg_marker_parser_method read_restart_marker;

-  /* Application-overridable marker processing methods */

-  jpeg_marker_parser_method process_COM;

-  jpeg_marker_parser_method process_APPn[16];

-

-  /* State of marker reader --- nominally internal, but applications

-   * supplying COM or APPn handlers might like to know the state.

-   */

-  boolean saw_SOI;		/* found SOI? */

-  boolean saw_SOF;		/* found SOF? */

-  int next_restart_num;		/* next restart number expected (0-7) */

-  unsigned int discarded_bytes;	/* # of bytes skipped looking for a marker */

-};

-

-/* Entropy decoding */

-struct jpeg_entropy_decoder {

-  JMETHOD(void, start_pass, (j_decompress_ptr cinfo));

-  JMETHOD(boolean, decode_mcu, (j_decompress_ptr cinfo,

-				JBLOCKROW *MCU_data));

-};

-

-/* Inverse DCT (also performs dequantization) */

-typedef JMETHOD(void, inverse_DCT_method_ptr,

-		(j_decompress_ptr cinfo, jpeg_component_info * compptr,

-		 JCOEFPTR coef_block,

-		 JSAMPARRAY output_buf, JDIMENSION output_col));

-

-struct jpeg_inverse_dct {

-  JMETHOD(void, start_pass, (j_decompress_ptr cinfo));

-  /* It is useful to allow each component to have a separate IDCT method. */

-  inverse_DCT_method_ptr inverse_DCT[MAX_COMPONENTS];

-};

-

-/* Upsampling (note that upsampler must also call color converter) */

-struct jpeg_upsampler {

-  JMETHOD(void, start_pass, (j_decompress_ptr cinfo));

-  JMETHOD(void, upsample, (j_decompress_ptr cinfo,

-			   JSAMPIMAGE input_buf,

-			   JDIMENSION *in_row_group_ctr,

-			   JDIMENSION in_row_groups_avail,

-			   JSAMPARRAY output_buf,

-			   JDIMENSION *out_row_ctr,

-			   JDIMENSION out_rows_avail));

-

-  boolean need_context_rows;	/* TRUE if need rows above & below */

-};

-

-/* Colorspace conversion */

-struct jpeg_color_deconverter {

-  JMETHOD(void, start_pass, (j_decompress_ptr cinfo));

-  JMETHOD(void, color_convert, (j_decompress_ptr cinfo,

-				JSAMPIMAGE input_buf, JDIMENSION input_row,

-				JSAMPARRAY output_buf, int num_rows));

-};

-

-/* Color quantization or color precision reduction */

-struct jpeg_color_quantizer {

-  JMETHOD(void, start_pass, (j_decompress_ptr cinfo, boolean is_pre_scan));

-  JMETHOD(void, color_quantize, (j_decompress_ptr cinfo,

-				 JSAMPARRAY input_buf, JSAMPARRAY output_buf,

-				 int num_rows));

-  JMETHOD(void, finish_pass, (j_decompress_ptr cinfo));

-  JMETHOD(void, new_color_map, (j_decompress_ptr cinfo));

-};

-

-

-/* Miscellaneous useful macros */

-

-#undef MAX

-#define MAX(a,b)	((a) > (b) ? (a) : (b))

-#undef MIN

-#define MIN(a,b)	((a) < (b) ? (a) : (b))

-

-

-/* We assume that right shift corresponds to signed division by 2 with

- * rounding towards minus infinity.  This is correct for typical "arithmetic

- * shift" instructions that shift in copies of the sign bit.  But some

- * C compilers implement >> with an unsigned shift.  For these machines you

- * must define RIGHT_SHIFT_IS_UNSIGNED.

- * RIGHT_SHIFT provides a proper signed right shift of an INT32 quantity.

- * It is only applied with constant shift counts.  SHIFT_TEMPS must be

- * included in the variables of any routine using RIGHT_SHIFT.

- */

-

-#ifdef RIGHT_SHIFT_IS_UNSIGNED

-#define SHIFT_TEMPS	INT32 shift_temp;

-#define RIGHT_SHIFT(x,shft)  \

-	((shift_temp = (x)) < 0 ? \

-	 (shift_temp >> (shft)) | ((~((INT32) 0)) << (32-(shft))) : \

-	 (shift_temp >> (shft)))

-#else

-#define SHIFT_TEMPS

-#define RIGHT_SHIFT(x,shft)	((x) >> (shft))

-#endif

-

-

-/* Short forms of external names for systems with brain-damaged linkers. */

-

-#ifdef NEED_SHORT_EXTERNAL_NAMES

-#define jinit_compress_master	jICompress

-#define jinit_c_master_control	jICMaster

-#define jinit_c_main_controller	jICMainC

-#define jinit_c_prep_controller	jICPrepC

-#define jinit_c_coef_controller	jICCoefC

-#define jinit_color_converter	jICColor

-#define jinit_downsampler	jIDownsampler

-#define jinit_forward_dct	jIFDCT

-#define jinit_huff_encoder	jIHEncoder

-#define jinit_phuff_encoder	jIPHEncoder

-#define jinit_marker_writer	jIMWriter

-#define jinit_master_decompress	jIDMaster

-#define jinit_d_main_controller	jIDMainC

-#define jinit_d_coef_controller	jIDCoefC

-#define jinit_d_post_controller	jIDPostC

-#define jinit_input_controller	jIInCtlr

-#define jinit_marker_reader	jIMReader

-#define jinit_huff_decoder	jIHDecoder

-#define jinit_phuff_decoder	jIPHDecoder

-#define jinit_inverse_dct	jIIDCT

-#define jinit_upsampler		jIUpsampler

-#define jinit_color_deconverter	jIDColor

-#define jinit_1pass_quantizer	jI1Quant

-#define jinit_2pass_quantizer	jI2Quant

-#define jinit_merged_upsampler	jIMUpsampler

-#define jinit_memory_mgr	jIMemMgr

-#define jdiv_round_up		jDivRound

-#define jround_up		jRound

-#define jcopy_sample_rows	jCopySamples

-#define jcopy_block_row		jCopyBlocks

-#define jzero_far		jZeroFar

-#define jpeg_zigzag_order	jZIGTable

-#define jpeg_natural_order	jZAGTable

-#endif /* NEED_SHORT_EXTERNAL_NAMES */

-

-

-/* Compression module initialization routines */

-EXTERN void jinit_compress_master JPP((j_compress_ptr cinfo));

-EXTERN void jinit_c_master_control JPP((j_compress_ptr cinfo,

-					boolean transcode_only));

-EXTERN void jinit_c_main_controller JPP((j_compress_ptr cinfo,

-					 boolean need_full_buffer));

-EXTERN void jinit_c_prep_controller JPP((j_compress_ptr cinfo,

-					 boolean need_full_buffer));

-EXTERN void jinit_c_coef_controller JPP((j_compress_ptr cinfo,

-					 boolean need_full_buffer));

-EXTERN void jinit_color_converter JPP((j_compress_ptr cinfo));

-EXTERN void jinit_downsampler JPP((j_compress_ptr cinfo));

-EXTERN void jinit_forward_dct JPP((j_compress_ptr cinfo));

-EXTERN void jinit_huff_encoder JPP((j_compress_ptr cinfo));

-EXTERN void jinit_phuff_encoder JPP((j_compress_ptr cinfo));

-EXTERN void jinit_marker_writer JPP((j_compress_ptr cinfo));

-/* Decompression module initialization routines */

-EXTERN void jinit_master_decompress JPP((j_decompress_ptr cinfo));

-EXTERN void jinit_d_main_controller JPP((j_decompress_ptr cinfo,

-					 boolean need_full_buffer));

-EXTERN void jinit_d_coef_controller JPP((j_decompress_ptr cinfo,

-					 boolean need_full_buffer));

-EXTERN void jinit_d_post_controller JPP((j_decompress_ptr cinfo,

-					 boolean need_full_buffer));

-EXTERN void jinit_input_controller JPP((j_decompress_ptr cinfo));

-EXTERN void jinit_marker_reader JPP((j_decompress_ptr cinfo));

-EXTERN void jinit_huff_decoder JPP((j_decompress_ptr cinfo));

-EXTERN void jinit_phuff_decoder JPP((j_decompress_ptr cinfo));

-EXTERN void jinit_inverse_dct JPP((j_decompress_ptr cinfo));

-EXTERN void jinit_upsampler JPP((j_decompress_ptr cinfo));

-EXTERN void jinit_color_deconverter JPP((j_decompress_ptr cinfo));

-EXTERN void jinit_1pass_quantizer JPP((j_decompress_ptr cinfo));

-EXTERN void jinit_2pass_quantizer JPP((j_decompress_ptr cinfo));

-EXTERN void jinit_merged_upsampler JPP((j_decompress_ptr cinfo));

-/* Memory manager initialization */

-EXTERN void jinit_memory_mgr JPP((j_common_ptr cinfo));

-

-/* Utility routines in jutils.c */

-EXTERN long jdiv_round_up JPP((long a, long b));

-EXTERN long jround_up JPP((long a, long b));

-EXTERN void jcopy_sample_rows JPP((JSAMPARRAY input_array, int source_row,

-				   JSAMPARRAY output_array, int dest_row,

-				   int num_rows, JDIMENSION num_cols));

-EXTERN void jcopy_block_row JPP((JBLOCKROW input_row, JBLOCKROW output_row,

-				 JDIMENSION num_blocks));

-EXTERN void jzero_far JPP((void FAR * target, size_t bytestozero));

-/* Constant tables in jutils.c */

-extern const int jpeg_zigzag_order[]; /* natural coef order to zigzag order */

-extern const int jpeg_natural_order[]; /* zigzag coef order to natural order */

-

-/* Suppress undefined-structure complaints if necessary. */

-

-#ifdef INCOMPLETE_TYPES_BROKEN

-#ifndef AM_MEMORY_MANAGER	/* only jmemmgr.c defines these */

-struct jvirt_sarray_control { long dummy; };

-struct jvirt_barray_control { long dummy; };

-#endif

-#endif /* INCOMPLETE_TYPES_BROKEN */

+/*
+ * jpegint.h
+ *
+ * Copyright (C) 1991-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file provides common declarations for the various JPEG modules.
+ * These declarations are considered internal to the JPEG library; most
+ * applications using the library shouldn't need to include this file.
+ */
+
+
+/* Declarations for both compression & decompression */
+
+typedef enum {			/* Operating modes for buffer controllers */
+	JBUF_PASS_THRU,		/* Plain stripwise operation */
+	/* Remaining modes require a full-image buffer to have been created */
+	JBUF_SAVE_SOURCE,	/* Run source subobject only, save output */
+	JBUF_CRANK_DEST,	/* Run dest subobject only, using saved data */
+	JBUF_SAVE_AND_PASS	/* Run both subobjects, save output */
+} J_BUF_MODE;
+
+/* Values of global_state field (jdapi.c has some dependencies on ordering!) */
+#define CSTATE_START	100	/* after create_compress */
+#define CSTATE_SCANNING	101	/* start_compress done, write_scanlines OK */
+#define CSTATE_RAW_OK	102	/* start_compress done, write_raw_data OK */
+#define CSTATE_WRCOEFS	103	/* jpeg_write_coefficients done */
+#define DSTATE_START	200	/* after create_decompress */
+#define DSTATE_INHEADER	201	/* reading header markers, no SOS yet */
+#define DSTATE_READY	202	/* found SOS, ready for start_decompress */
+#define DSTATE_PRELOAD	203	/* reading multiscan file in start_decompress*/
+#define DSTATE_PRESCAN	204	/* performing dummy pass for 2-pass quant */
+#define DSTATE_SCANNING	205	/* start_decompress done, read_scanlines OK */
+#define DSTATE_RAW_OK	206	/* start_decompress done, read_raw_data OK */
+#define DSTATE_BUFIMAGE	207	/* expecting jpeg_start_output */
+#define DSTATE_BUFPOST	208	/* looking for SOS/EOI in jpeg_finish_output */
+#define DSTATE_RDCOEFS	209	/* reading file in jpeg_read_coefficients */
+#define DSTATE_STOPPING	210	/* looking for EOI in jpeg_finish_decompress */
+
+
+/* Declarations for compression modules */
+
+/* Master control module */
+struct jpeg_comp_master {
+  JMETHOD(void, prepare_for_pass, (j_compress_ptr cinfo));
+  JMETHOD(void, pass_startup, (j_compress_ptr cinfo));
+  JMETHOD(void, finish_pass, (j_compress_ptr cinfo));
+
+  /* State variables made visible to other modules */
+  boolean call_pass_startup;	/* True if pass_startup must be called */
+  boolean is_last_pass;		/* True during last pass */
+};
+
+/* Main buffer control (downsampled-data buffer) */
+struct jpeg_c_main_controller {
+  JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode));
+  JMETHOD(void, process_data, (j_compress_ptr cinfo,
+			       JSAMPARRAY input_buf, JDIMENSION *in_row_ctr,
+			       JDIMENSION in_rows_avail));
+};
+
+/* Compression preprocessing (downsampling input buffer control) */
+struct jpeg_c_prep_controller {
+  JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode));
+  JMETHOD(void, pre_process_data, (j_compress_ptr cinfo,
+				   JSAMPARRAY input_buf,
+				   JDIMENSION *in_row_ctr,
+				   JDIMENSION in_rows_avail,
+				   JSAMPIMAGE output_buf,
+				   JDIMENSION *out_row_group_ctr,
+				   JDIMENSION out_row_groups_avail));
+};
+
+/* Coefficient buffer control */
+struct jpeg_c_coef_controller {
+  JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode));
+  JMETHOD(boolean, compress_data, (j_compress_ptr cinfo,
+				   JSAMPIMAGE input_buf));
+};
+
+/* Colorspace conversion */
+struct jpeg_color_converter {
+  JMETHOD(void, start_pass, (j_compress_ptr cinfo));
+  JMETHOD(void, color_convert, (j_compress_ptr cinfo,
+				JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
+				JDIMENSION output_row, int num_rows));
+};
+
+/* Downsampling */
+struct jpeg_downsampler {
+  JMETHOD(void, start_pass, (j_compress_ptr cinfo));
+  JMETHOD(void, downsample, (j_compress_ptr cinfo,
+			     JSAMPIMAGE input_buf, JDIMENSION in_row_index,
+			     JSAMPIMAGE output_buf,
+			     JDIMENSION out_row_group_index));
+
+  boolean need_context_rows;	/* TRUE if need rows above & below */
+};
+
+/* Forward DCT (also controls coefficient quantization) */
+struct jpeg_forward_dct {
+  JMETHOD(void, start_pass, (j_compress_ptr cinfo));
+  /* perhaps this should be an array??? */
+  JMETHOD(void, forward_DCT, (j_compress_ptr cinfo,
+			      jpeg_component_info * compptr,
+			      JSAMPARRAY sample_data, JBLOCKROW coef_blocks,
+			      JDIMENSION start_row, JDIMENSION start_col,
+			      JDIMENSION num_blocks));
+};
+
+/* Entropy encoding */
+struct jpeg_entropy_encoder {
+  JMETHOD(void, start_pass, (j_compress_ptr cinfo, boolean gather_statistics));
+  JMETHOD(boolean, encode_mcu, (j_compress_ptr cinfo, JBLOCKROW *MCU_data));
+  JMETHOD(void, finish_pass, (j_compress_ptr cinfo));
+};
+
+/* Marker writing */
+struct jpeg_marker_writer {
+  /* write_any_marker is exported for use by applications */
+  /* Probably only COM and APPn markers should be written */
+  JMETHOD(void, write_any_marker, (j_compress_ptr cinfo, int marker,
+				   const JOCTET *dataptr, unsigned int datalen));
+  JMETHOD(void, write_file_header, (j_compress_ptr cinfo));
+  JMETHOD(void, write_frame_header, (j_compress_ptr cinfo));
+  JMETHOD(void, write_scan_header, (j_compress_ptr cinfo));
+  JMETHOD(void, write_file_trailer, (j_compress_ptr cinfo));
+  JMETHOD(void, write_tables_only, (j_compress_ptr cinfo));
+};
+
+
+/* Declarations for decompression modules */
+
+/* Master control module */
+struct jpeg_decomp_master {
+  JMETHOD(void, prepare_for_output_pass, (j_decompress_ptr cinfo));
+  JMETHOD(void, finish_output_pass, (j_decompress_ptr cinfo));
+
+  /* State variables made visible to other modules */
+  boolean is_dummy_pass;	/* True during 1st pass for 2-pass quant */
+};
+
+/* Input control module */
+struct jpeg_input_controller {
+  JMETHOD(int, consume_input, (j_decompress_ptr cinfo));
+  JMETHOD(void, reset_input_controller, (j_decompress_ptr cinfo));
+  JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo));
+  JMETHOD(void, finish_input_pass, (j_decompress_ptr cinfo));
+
+  /* State variables made visible to other modules */
+  boolean has_multiple_scans;	/* True if file has multiple scans */
+  boolean eoi_reached;		/* True when EOI has been consumed */
+};
+
+/* Main buffer control (downsampled-data buffer) */
+struct jpeg_d_main_controller {
+  JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode));
+  JMETHOD(void, process_data, (j_decompress_ptr cinfo,
+			       JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
+			       JDIMENSION out_rows_avail));
+};
+
+/* Coefficient buffer control */
+struct jpeg_d_coef_controller {
+  JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo));
+  JMETHOD(int, consume_data, (j_decompress_ptr cinfo));
+  JMETHOD(void, start_output_pass, (j_decompress_ptr cinfo));
+  JMETHOD(int, decompress_data, (j_decompress_ptr cinfo,
+				 JSAMPIMAGE output_buf));
+  /* Pointer to array of coefficient virtual arrays, or NULL if none */
+  jvirt_barray_ptr *coef_arrays;
+};
+
+/* Decompression postprocessing (color quantization buffer control) */
+struct jpeg_d_post_controller {
+  JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode));
+  JMETHOD(void, post_process_data, (j_decompress_ptr cinfo,
+				    JSAMPIMAGE input_buf,
+				    JDIMENSION *in_row_group_ctr,
+				    JDIMENSION in_row_groups_avail,
+				    JSAMPARRAY output_buf,
+				    JDIMENSION *out_row_ctr,
+				    JDIMENSION out_rows_avail));
+};
+
+/* Marker reading & parsing */
+struct jpeg_marker_reader {
+  JMETHOD(void, reset_marker_reader, (j_decompress_ptr cinfo));
+  /* Read markers until SOS or EOI.
+   * Returns same codes as are defined for jpeg_consume_input:
+   * JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI.
+   */
+  JMETHOD(int, read_markers, (j_decompress_ptr cinfo));
+  /* Read a restart marker --- exported for use by entropy decoder only */
+  jpeg_marker_parser_method read_restart_marker;
+  /* Application-overridable marker processing methods */
+  jpeg_marker_parser_method process_COM;
+  jpeg_marker_parser_method process_APPn[16];
+
+  /* State of marker reader --- nominally internal, but applications
+   * supplying COM or APPn handlers might like to know the state.
+   */
+  boolean saw_SOI;		/* found SOI? */
+  boolean saw_SOF;		/* found SOF? */
+  int next_restart_num;		/* next restart number expected (0-7) */
+  unsigned int discarded_bytes;	/* # of bytes skipped looking for a marker */
+};
+
+/* Entropy decoding */
+struct jpeg_entropy_decoder {
+  JMETHOD(void, start_pass, (j_decompress_ptr cinfo));
+  JMETHOD(boolean, decode_mcu, (j_decompress_ptr cinfo,
+				JBLOCKROW *MCU_data));
+};
+
+/* Inverse DCT (also performs dequantization) */
+typedef JMETHOD(void, inverse_DCT_method_ptr,
+		(j_decompress_ptr cinfo, jpeg_component_info * compptr,
+		 JCOEFPTR coef_block,
+		 JSAMPARRAY output_buf, JDIMENSION output_col));
+
+struct jpeg_inverse_dct {
+  JMETHOD(void, start_pass, (j_decompress_ptr cinfo));
+  /* It is useful to allow each component to have a separate IDCT method. */
+  inverse_DCT_method_ptr inverse_DCT[MAX_COMPONENTS];
+};
+
+/* Upsampling (note that upsampler must also call color converter) */
+struct jpeg_upsampler {
+  JMETHOD(void, start_pass, (j_decompress_ptr cinfo));
+  JMETHOD(void, upsample, (j_decompress_ptr cinfo,
+			   JSAMPIMAGE input_buf,
+			   JDIMENSION *in_row_group_ctr,
+			   JDIMENSION in_row_groups_avail,
+			   JSAMPARRAY output_buf,
+			   JDIMENSION *out_row_ctr,
+			   JDIMENSION out_rows_avail));
+
+  boolean need_context_rows;	/* TRUE if need rows above & below */
+};
+
+/* Colorspace conversion */
+struct jpeg_color_deconverter {
+  JMETHOD(void, start_pass, (j_decompress_ptr cinfo));
+  JMETHOD(void, color_convert, (j_decompress_ptr cinfo,
+				JSAMPIMAGE input_buf, JDIMENSION input_row,
+				JSAMPARRAY output_buf, int num_rows));
+};
+
+/* Color quantization or color precision reduction */
+struct jpeg_color_quantizer {
+  JMETHOD(void, start_pass, (j_decompress_ptr cinfo, boolean is_pre_scan));
+  JMETHOD(void, color_quantize, (j_decompress_ptr cinfo,
+				 JSAMPARRAY input_buf, JSAMPARRAY output_buf,
+				 int num_rows));
+  JMETHOD(void, finish_pass, (j_decompress_ptr cinfo));
+  JMETHOD(void, new_color_map, (j_decompress_ptr cinfo));
+};
+
+
+/* Miscellaneous useful macros */
+
+#undef MAX
+#define MAX(a,b)	((a) > (b) ? (a) : (b))
+#undef MIN
+#define MIN(a,b)	((a) < (b) ? (a) : (b))
+
+
+/* We assume that right shift corresponds to signed division by 2 with
+ * rounding towards minus infinity.  This is correct for typical "arithmetic
+ * shift" instructions that shift in copies of the sign bit.  But some
+ * C compilers implement >> with an unsigned shift.  For these machines you
+ * must define RIGHT_SHIFT_IS_UNSIGNED.
+ * RIGHT_SHIFT provides a proper signed right shift of an INT32 quantity.
+ * It is only applied with constant shift counts.  SHIFT_TEMPS must be
+ * included in the variables of any routine using RIGHT_SHIFT.
+ */
+
+#ifdef RIGHT_SHIFT_IS_UNSIGNED
+#define SHIFT_TEMPS	INT32 shift_temp;
+#define RIGHT_SHIFT(x,shft)  \
+	((shift_temp = (x)) < 0 ? \
+	 (shift_temp >> (shft)) | ((~((INT32) 0)) << (32-(shft))) : \
+	 (shift_temp >> (shft)))
+#else
+#define SHIFT_TEMPS
+#define RIGHT_SHIFT(x,shft)	((x) >> (shft))
+#endif
+
+
+/* Short forms of external names for systems with brain-damaged linkers. */
+
+#ifdef NEED_SHORT_EXTERNAL_NAMES
+#define jinit_compress_master	jICompress
+#define jinit_c_master_control	jICMaster
+#define jinit_c_main_controller	jICMainC
+#define jinit_c_prep_controller	jICPrepC
+#define jinit_c_coef_controller	jICCoefC
+#define jinit_color_converter	jICColor
+#define jinit_downsampler	jIDownsampler
+#define jinit_forward_dct	jIFDCT
+#define jinit_huff_encoder	jIHEncoder
+#define jinit_phuff_encoder	jIPHEncoder
+#define jinit_marker_writer	jIMWriter
+#define jinit_master_decompress	jIDMaster
+#define jinit_d_main_controller	jIDMainC
+#define jinit_d_coef_controller	jIDCoefC
+#define jinit_d_post_controller	jIDPostC
+#define jinit_input_controller	jIInCtlr
+#define jinit_marker_reader	jIMReader
+#define jinit_huff_decoder	jIHDecoder
+#define jinit_phuff_decoder	jIPHDecoder
+#define jinit_inverse_dct	jIIDCT
+#define jinit_upsampler		jIUpsampler
+#define jinit_color_deconverter	jIDColor
+#define jinit_1pass_quantizer	jI1Quant
+#define jinit_2pass_quantizer	jI2Quant
+#define jinit_merged_upsampler	jIMUpsampler
+#define jinit_memory_mgr	jIMemMgr
+#define jdiv_round_up		jDivRound
+#define jround_up		jRound
+#define jcopy_sample_rows	jCopySamples
+#define jcopy_block_row		jCopyBlocks
+#define jzero_far		jZeroFar
+#define jpeg_zigzag_order	jZIGTable
+#define jpeg_natural_order	jZAGTable
+#endif /* NEED_SHORT_EXTERNAL_NAMES */
+
+
+/* Compression module initialization routines */
+EXTERN void jinit_compress_master JPP((j_compress_ptr cinfo));
+EXTERN void jinit_c_master_control JPP((j_compress_ptr cinfo,
+					boolean transcode_only));
+EXTERN void jinit_c_main_controller JPP((j_compress_ptr cinfo,
+					 boolean need_full_buffer));
+EXTERN void jinit_c_prep_controller JPP((j_compress_ptr cinfo,
+					 boolean need_full_buffer));
+EXTERN void jinit_c_coef_controller JPP((j_compress_ptr cinfo,
+					 boolean need_full_buffer));
+EXTERN void jinit_color_converter JPP((j_compress_ptr cinfo));
+EXTERN void jinit_downsampler JPP((j_compress_ptr cinfo));
+EXTERN void jinit_forward_dct JPP((j_compress_ptr cinfo));
+EXTERN void jinit_huff_encoder JPP((j_compress_ptr cinfo));
+EXTERN void jinit_phuff_encoder JPP((j_compress_ptr cinfo));
+EXTERN void jinit_marker_writer JPP((j_compress_ptr cinfo));
+/* Decompression module initialization routines */
+EXTERN void jinit_master_decompress JPP((j_decompress_ptr cinfo));
+EXTERN void jinit_d_main_controller JPP((j_decompress_ptr cinfo,
+					 boolean need_full_buffer));
+EXTERN void jinit_d_coef_controller JPP((j_decompress_ptr cinfo,
+					 boolean need_full_buffer));
+EXTERN void jinit_d_post_controller JPP((j_decompress_ptr cinfo,
+					 boolean need_full_buffer));
+EXTERN void jinit_input_controller JPP((j_decompress_ptr cinfo));
+EXTERN void jinit_marker_reader JPP((j_decompress_ptr cinfo));
+EXTERN void jinit_huff_decoder JPP((j_decompress_ptr cinfo));
+EXTERN void jinit_phuff_decoder JPP((j_decompress_ptr cinfo));
+EXTERN void jinit_inverse_dct JPP((j_decompress_ptr cinfo));
+EXTERN void jinit_upsampler JPP((j_decompress_ptr cinfo));
+EXTERN void jinit_color_deconverter JPP((j_decompress_ptr cinfo));
+EXTERN void jinit_1pass_quantizer JPP((j_decompress_ptr cinfo));
+EXTERN void jinit_2pass_quantizer JPP((j_decompress_ptr cinfo));
+EXTERN void jinit_merged_upsampler JPP((j_decompress_ptr cinfo));
+/* Memory manager initialization */
+EXTERN void jinit_memory_mgr JPP((j_common_ptr cinfo));
+
+/* Utility routines in jutils.c */
+EXTERN long jdiv_round_up JPP((long a, long b));
+EXTERN long jround_up JPP((long a, long b));
+EXTERN void jcopy_sample_rows JPP((JSAMPARRAY input_array, int source_row,
+				   JSAMPARRAY output_array, int dest_row,
+				   int num_rows, JDIMENSION num_cols));
+EXTERN void jcopy_block_row JPP((JBLOCKROW input_row, JBLOCKROW output_row,
+				 JDIMENSION num_blocks));
+EXTERN void jzero_far JPP((void FAR * target, size_t bytestozero));
+/* Constant tables in jutils.c */
+extern const int jpeg_zigzag_order[]; /* natural coef order to zigzag order */
+extern const int jpeg_natural_order[]; /* zigzag coef order to natural order */
+
+/* Suppress undefined-structure complaints if necessary. */
+
+#ifdef INCOMPLETE_TYPES_BROKEN
+#ifndef AM_MEMORY_MANAGER	/* only jmemmgr.c defines these */
+struct jvirt_sarray_control { long dummy; };
+struct jvirt_barray_control { long dummy; };
+#endif
+#endif /* INCOMPLETE_TYPES_BROKEN */
diff --git a/libs/jpeg6/jpgload.cpp b/libs/jpeg6/jpgload.cpp
index 1006b99..ca64685 100755
--- a/libs/jpeg6/jpgload.cpp
+++ b/libs/jpeg6/jpgload.cpp
@@ -1,142 +1,142 @@
-

-    

-#include "jpeglib.h"

-#include <memory.h>

-

-GLOBAL void LoadJPGBuff(unsigned char *fbuffer, unsigned char **pic, int *width, int *height ) 

-{

-  /* This struct contains the JPEG decompression parameters and pointers to

-   * working space (which is allocated as needed by the JPEG library).

-   */

-  struct jpeg_decompress_struct cinfo;

-  /* We use our private extension JPEG error handler.

-   * Note that this struct must live as long as the main JPEG parameter

-   * struct, to avoid dangling-pointer problems.

-   */

-  /* This struct represents a JPEG error handler.  It is declared separately

-   * because applications often want to supply a specialized error handler

-   * (see the second half of this file for an example).  But here we just

-   * take the easy way out and use the standard error handler, which will

-   * print a message on stderr and call exit() if compression fails.

-   * Note that this struct must live as long as the main JPEG parameter

-   * struct, to avoid dangling-pointer problems.

-   */

-

-  struct jpeg_error_mgr jerr;

-  /* More stuff */

-  JSAMPARRAY buffer;		/* Output row buffer */

-  int row_stride;		/* physical row width in output buffer */

-  unsigned char *out;

-  byte  *bbuf;

-  int nSize;

-

-  /* Step 1: allocate and initialize JPEG decompression object */

-

-  /* We have to set up the error handler first, in case the initialization

-   * step fails.  (Unlikely, but it could happen if you are out of memory.)

-   * This routine fills in the contents of struct jerr, and returns jerr's

-   * address which we place into the link field in cinfo.

-   */

-  cinfo.err = jpeg_std_error(&jerr);

-

-  /* Now we can initialize the JPEG decompression object. */

-  jpeg_create_decompress(&cinfo);

-

-  /* Step 2: specify data source (eg, a file) */

-

-  jpeg_stdio_src(&cinfo, fbuffer);

-

-  /* Step 3: read file parameters with jpeg_read_header() */

-

-  (void) jpeg_read_header(&cinfo, TRUE);

-  /* We can ignore the return value from jpeg_read_header since

-   *   (a) suspension is not possible with the stdio data source, and

-   *   (b) we passed TRUE to reject a tables-only JPEG file as an error.

-   * See libjpeg.doc for more info.

-   */

-

-  /* Step 4: set parameters for decompression */

-

-  /* In this example, we don't need to change any of the defaults set by

-   * jpeg_read_header(), so we do nothing here.

-   */

-

-  /* Step 5: Start decompressor */

-

-  (void) jpeg_start_decompress(&cinfo);

-  /* We can ignore the return value since suspension is not possible

-   * with the stdio data source.

-   */

-

-  /* We may need to do some setup of our own at this point before reading

-   * the data.  After jpeg_start_decompress() we have the correct scaled

-   * output image dimensions available, as well as the output colormap

-   * if we asked for color quantization.

-   * In this example, we need to make an output work buffer of the right size.

-   */ 

-  /* JSAMPLEs per row in output buffer */

-  row_stride = cinfo.output_width * cinfo.output_components;

-

-  nSize = cinfo.output_width*cinfo.output_height*cinfo.output_components;

-  out = reinterpret_cast<unsigned char*>(malloc(nSize+1));

-  memset(out, 0, nSize+1);

-

-  *pic = out;

-  *width = cinfo.output_width;

-  *height = cinfo.output_height;

-

-  /* Step 6: while (scan lines remain to be read) */

-  /*           jpeg_read_scanlines(...); */

-

-  /* Here we use the library's state variable cinfo.output_scanline as the

-   * loop counter, so that we don't have to keep track ourselves.

-   */

-  while (cinfo.output_scanline < cinfo.output_height) {

-    /* jpeg_read_scanlines expects an array of pointers to scanlines.

-     * Here the array is only one element long, but you could ask for

-     * more than one scanline at a time if that's more convenient.

-     */

-	  bbuf = ((out+(row_stride*cinfo.output_scanline)));

-  	buffer = &bbuf;

-    (void) jpeg_read_scanlines(&cinfo, buffer, 1);

-  }

-

-  // clear all the alphas to 255

-  {

-	  int	i, j;

-		byte	*buf;

-

-		buf = *pic;

-

-	  j = cinfo.output_width * cinfo.output_height * 4;

-	  for ( i = 3 ; i < j ; i+=4 ) {

-		  buf[i] = 255;

-	  }

-  }

-

-  /* Step 7: Finish decompression */

-

-  (void) jpeg_finish_decompress(&cinfo);

-  /* We can ignore the return value since suspension is not possible

-   * with the stdio data source.

-   */

-

-  /* Step 8: Release JPEG decompression object */

-

-  /* This is an important step since it will release a good deal of memory. */

-  jpeg_destroy_decompress(&cinfo);

-

-  /* After finish_decompress, we can close the input file.

-   * Here we postpone it until after no more JPEG errors are possible,

-   * so as to simplify the setjmp error logic above.  (Actually, I don't

-   * think that jpeg_destroy can do an error exit, but why assume anything...)

-   */

-  //free (fbuffer);

-

-  /* At this point you may want to check to see whether any corrupt-data

-   * warnings occurred (test whether jerr.pub.num_warnings is nonzero).

-   */

-

-  /* And we're done! */

-}

-

+
+    
+#include "jpeglib.h"
+#include <memory.h>
+
+GLOBAL void LoadJPGBuff(unsigned char *fbuffer, unsigned char **pic, int *width, int *height ) 
+{
+  /* This struct contains the JPEG decompression parameters and pointers to
+   * working space (which is allocated as needed by the JPEG library).
+   */
+  struct jpeg_decompress_struct cinfo;
+  /* We use our private extension JPEG error handler.
+   * Note that this struct must live as long as the main JPEG parameter
+   * struct, to avoid dangling-pointer problems.
+   */
+  /* This struct represents a JPEG error handler.  It is declared separately
+   * because applications often want to supply a specialized error handler
+   * (see the second half of this file for an example).  But here we just
+   * take the easy way out and use the standard error handler, which will
+   * print a message on stderr and call exit() if compression fails.
+   * Note that this struct must live as long as the main JPEG parameter
+   * struct, to avoid dangling-pointer problems.
+   */
+
+  struct jpeg_error_mgr jerr;
+  /* More stuff */
+  JSAMPARRAY buffer;		/* Output row buffer */
+  int row_stride;		/* physical row width in output buffer */
+  unsigned char *out;
+  byte  *bbuf;
+  int nSize;
+
+  /* Step 1: allocate and initialize JPEG decompression object */
+
+  /* We have to set up the error handler first, in case the initialization
+   * step fails.  (Unlikely, but it could happen if you are out of memory.)
+   * This routine fills in the contents of struct jerr, and returns jerr's
+   * address which we place into the link field in cinfo.
+   */
+  cinfo.err = jpeg_std_error(&jerr);
+
+  /* Now we can initialize the JPEG decompression object. */
+  jpeg_create_decompress(&cinfo);
+
+  /* Step 2: specify data source (eg, a file) */
+
+  jpeg_stdio_src(&cinfo, fbuffer);
+
+  /* Step 3: read file parameters with jpeg_read_header() */
+
+  (void) jpeg_read_header(&cinfo, TRUE);
+  /* We can ignore the return value from jpeg_read_header since
+   *   (a) suspension is not possible with the stdio data source, and
+   *   (b) we passed TRUE to reject a tables-only JPEG file as an error.
+   * See libjpeg.doc for more info.
+   */
+
+  /* Step 4: set parameters for decompression */
+
+  /* In this example, we don't need to change any of the defaults set by
+   * jpeg_read_header(), so we do nothing here.
+   */
+
+  /* Step 5: Start decompressor */
+
+  (void) jpeg_start_decompress(&cinfo);
+  /* We can ignore the return value since suspension is not possible
+   * with the stdio data source.
+   */
+
+  /* We may need to do some setup of our own at this point before reading
+   * the data.  After jpeg_start_decompress() we have the correct scaled
+   * output image dimensions available, as well as the output colormap
+   * if we asked for color quantization.
+   * In this example, we need to make an output work buffer of the right size.
+   */ 
+  /* JSAMPLEs per row in output buffer */
+  row_stride = cinfo.output_width * cinfo.output_components;
+
+  nSize = cinfo.output_width*cinfo.output_height*cinfo.output_components;
+  out = reinterpret_cast<unsigned char*>(malloc(nSize+1));
+  memset(out, 0, nSize+1);
+
+  *pic = out;
+  *width = cinfo.output_width;
+  *height = cinfo.output_height;
+
+  /* Step 6: while (scan lines remain to be read) */
+  /*           jpeg_read_scanlines(...); */
+
+  /* Here we use the library's state variable cinfo.output_scanline as the
+   * loop counter, so that we don't have to keep track ourselves.
+   */
+  while (cinfo.output_scanline < cinfo.output_height) {
+    /* jpeg_read_scanlines expects an array of pointers to scanlines.
+     * Here the array is only one element long, but you could ask for
+     * more than one scanline at a time if that's more convenient.
+     */
+	  bbuf = ((out+(row_stride*cinfo.output_scanline)));
+  	buffer = &bbuf;
+    (void) jpeg_read_scanlines(&cinfo, buffer, 1);
+  }
+
+  // clear all the alphas to 255
+  {
+	  int	i, j;
+		byte	*buf;
+
+		buf = *pic;
+
+	  j = cinfo.output_width * cinfo.output_height * 4;
+	  for ( i = 3 ; i < j ; i+=4 ) {
+		  buf[i] = 255;
+	  }
+  }
+
+  /* Step 7: Finish decompression */
+
+  (void) jpeg_finish_decompress(&cinfo);
+  /* We can ignore the return value since suspension is not possible
+   * with the stdio data source.
+   */
+
+  /* Step 8: Release JPEG decompression object */
+
+  /* This is an important step since it will release a good deal of memory. */
+  jpeg_destroy_decompress(&cinfo);
+
+  /* After finish_decompress, we can close the input file.
+   * Here we postpone it until after no more JPEG errors are possible,
+   * so as to simplify the setjmp error logic above.  (Actually, I don't
+   * think that jpeg_destroy can do an error exit, but why assume anything...)
+   */
+  //free (fbuffer);
+
+  /* At this point you may want to check to see whether any corrupt-data
+   * warnings occurred (test whether jerr.pub.num_warnings is nonzero).
+   */
+
+  /* And we're done! */
+}
+
diff --git a/libs/jpeg6/jutils.cpp b/libs/jpeg6/jutils.cpp
index 8e8dc13..4ba2a54 100755
--- a/libs/jpeg6/jutils.cpp
+++ b/libs/jpeg6/jutils.cpp
@@ -1,175 +1,175 @@
-/*

- * jutils.c

- *

- * Copyright (C) 1991-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains tables and miscellaneous utility routines needed

- * for both compression and decompression.

- * Note we prefix all global names with "j" to minimize conflicts with

- * a surrounding application.

- */

-

-#define JPEG_INTERNALS

-#include "jinclude.h"

-#include "jpeglib.h"

-

-

-/*

- * jpeg_zigzag_order[i] is the zigzag-order position of the i'th element

- * of a DCT block read in natural order (left to right, top to bottom).

- */

-

-const int jpeg_zigzag_order[DCTSIZE2] = {

-   0,  1,  5,  6, 14, 15, 27, 28,

-   2,  4,  7, 13, 16, 26, 29, 42,

-   3,  8, 12, 17, 25, 30, 41, 43,

-   9, 11, 18, 24, 31, 40, 44, 53,

-  10, 19, 23, 32, 39, 45, 52, 54,

-  20, 22, 33, 38, 46, 51, 55, 60,

-  21, 34, 37, 47, 50, 56, 59, 61,

-  35, 36, 48, 49, 57, 58, 62, 63

-};

-

-/*

- * jpeg_natural_order[i] is the natural-order position of the i'th element

- * of zigzag order.

- *

- * When reading corrupted data, the Huffman decoders could attempt

- * to reference an entry beyond the end of this array (if the decoded

- * zero run length reaches past the end of the block).  To prevent

- * wild stores without adding an inner-loop test, we put some extra

- * "63"s after the real entries.  This will cause the extra coefficient

- * to be stored in location 63 of the block, not somewhere random.

- * The worst case would be a run-length of 15, which means we need 16

- * fake entries.

- */

-

-const int jpeg_natural_order[DCTSIZE2+16] = {

-  0,  1,  8, 16,  9,  2,  3, 10,

- 17, 24, 32, 25, 18, 11,  4,  5,

- 12, 19, 26, 33, 40, 48, 41, 34,

- 27, 20, 13,  6,  7, 14, 21, 28,

- 35, 42, 49, 56, 57, 50, 43, 36,

- 29, 22, 15, 23, 30, 37, 44, 51,

- 58, 59, 52, 45, 38, 31, 39, 46,

- 53, 60, 61, 54, 47, 55, 62, 63,

- 63, 63, 63, 63, 63, 63, 63, 63, /* extra entries for safety in decoder */

- 63, 63, 63, 63, 63, 63, 63, 63

-};

-

-

-/*

- * Arithmetic utilities

- */

-

-GLOBAL long

-jdiv_round_up (long a, long b)

-/* Compute a/b rounded up to next integer, ie, ceil(a/b) */

-/* Assumes a >= 0, b > 0 */

-{

-  return (a + b - 1L) / b;

-}

-

-

-GLOBAL long

-jround_up (long a, long b)

-/* Compute a rounded up to next multiple of b, ie, ceil(a/b)*b */

-/* Assumes a >= 0, b > 0 */

-{

-  a += b - 1L;

-  return a - (a % b);

-}

-

-

-/* On normal machines we can apply MEMCOPY() and MEMZERO() to sample arrays

- * and coefficient-block arrays.  This won't work on 80x86 because the arrays

- * are FAR and we're assuming a small-pointer memory model.  However, some

- * DOS compilers provide far-pointer versions of memcpy() and memset() even

- * in the small-model libraries.  These will be used if USE_FMEM is defined.

- * Otherwise, the routines below do it the hard way.  (The performance cost

- * is not all that great, because these routines aren't very heavily used.)

- */

-

-#ifndef NEED_FAR_POINTERS	/* normal case, same as regular macros */

-#define FMEMCOPY(dest,src,size)	MEMCOPY(dest,src,size)

-#define FMEMZERO(target,size)	MEMZERO(target,size)

-#else				/* 80x86 case, define if we can */

-#ifdef USE_FMEM

-#define FMEMCOPY(dest,src,size)	_fmemcpy((void FAR *)(dest), (const void FAR *)(src), (size_t)(size))

-#define FMEMZERO(target,size)	_fmemset((void FAR *)(target), 0, (size_t)(size))

-#endif

-#endif

-

-

-GLOBAL void

-jcopy_sample_rows (JSAMPARRAY input_array, int source_row,

-		   JSAMPARRAY output_array, int dest_row,

-		   int num_rows, JDIMENSION num_cols)

-/* Copy some rows of samples from one place to another.

- * num_rows rows are copied from input_array[source_row++]

- * to output_array[dest_row++]; these areas may overlap for duplication.

- * The source and destination arrays must be at least as wide as num_cols.

- */

-{

-  register JSAMPROW inptr, outptr;

-#ifdef FMEMCOPY

-  register size_t count = (size_t) (num_cols * SIZEOF(JSAMPLE));

-#else

-  register JDIMENSION count;

-#endif

-  register int row;

-

-  input_array += source_row;

-  output_array += dest_row;

-

-  for (row = num_rows; row > 0; row--) {

-    inptr = *input_array++;

-    outptr = *output_array++;

-#ifdef FMEMCOPY

-    FMEMCOPY(outptr, inptr, count);

-#else

-    for (count = num_cols; count > 0; count--)

-      *outptr++ = *inptr++;	/* needn't bother with GETJSAMPLE() here */

-#endif

-  }

-}

-

-

-GLOBAL void

-jcopy_block_row (JBLOCKROW input_row, JBLOCKROW output_row,

-		 JDIMENSION num_blocks)

-/* Copy a row of coefficient blocks from one place to another. */

-{

-#ifdef FMEMCOPY

-  FMEMCOPY(output_row, input_row, num_blocks * (DCTSIZE2 * SIZEOF(JCOEF)));

-#else

-  register JCOEFPTR inptr, outptr;

-  register long count;

-

-  inptr = (JCOEFPTR) input_row;

-  outptr = (JCOEFPTR) output_row;

-  for (count = (long) num_blocks * DCTSIZE2; count > 0; count--) {

-    *outptr++ = *inptr++;

-  }

-#endif

-}

-

-

-GLOBAL void

-jzero_far (void FAR * target, size_t bytestozero)

-/* Zero out a chunk of FAR memory. */

-/* This might be sample-array data, block-array data, or alloc_large data. */

-{

-#ifdef FMEMZERO

-  FMEMZERO(target, bytestozero);

-#else

-  register char FAR * ptr = (char FAR *) target;

-  register size_t count;

-

-  for (count = bytestozero; count > 0; count--) {

-    *ptr++ = 0;

-  }

-#endif

-}

+/*
+ * jutils.c
+ *
+ * Copyright (C) 1991-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains tables and miscellaneous utility routines needed
+ * for both compression and decompression.
+ * Note we prefix all global names with "j" to minimize conflicts with
+ * a surrounding application.
+ */
+
+#define JPEG_INTERNALS
+#include "jinclude.h"
+#include "jpeglib.h"
+
+
+/*
+ * jpeg_zigzag_order[i] is the zigzag-order position of the i'th element
+ * of a DCT block read in natural order (left to right, top to bottom).
+ */
+
+const int jpeg_zigzag_order[DCTSIZE2] = {
+   0,  1,  5,  6, 14, 15, 27, 28,
+   2,  4,  7, 13, 16, 26, 29, 42,
+   3,  8, 12, 17, 25, 30, 41, 43,
+   9, 11, 18, 24, 31, 40, 44, 53,
+  10, 19, 23, 32, 39, 45, 52, 54,
+  20, 22, 33, 38, 46, 51, 55, 60,
+  21, 34, 37, 47, 50, 56, 59, 61,
+  35, 36, 48, 49, 57, 58, 62, 63
+};
+
+/*
+ * jpeg_natural_order[i] is the natural-order position of the i'th element
+ * of zigzag order.
+ *
+ * When reading corrupted data, the Huffman decoders could attempt
+ * to reference an entry beyond the end of this array (if the decoded
+ * zero run length reaches past the end of the block).  To prevent
+ * wild stores without adding an inner-loop test, we put some extra
+ * "63"s after the real entries.  This will cause the extra coefficient
+ * to be stored in location 63 of the block, not somewhere random.
+ * The worst case would be a run-length of 15, which means we need 16
+ * fake entries.
+ */
+
+const int jpeg_natural_order[DCTSIZE2+16] = {
+  0,  1,  8, 16,  9,  2,  3, 10,
+ 17, 24, 32, 25, 18, 11,  4,  5,
+ 12, 19, 26, 33, 40, 48, 41, 34,
+ 27, 20, 13,  6,  7, 14, 21, 28,
+ 35, 42, 49, 56, 57, 50, 43, 36,
+ 29, 22, 15, 23, 30, 37, 44, 51,
+ 58, 59, 52, 45, 38, 31, 39, 46,
+ 53, 60, 61, 54, 47, 55, 62, 63,
+ 63, 63, 63, 63, 63, 63, 63, 63, /* extra entries for safety in decoder */
+ 63, 63, 63, 63, 63, 63, 63, 63
+};
+
+
+/*
+ * Arithmetic utilities
+ */
+
+GLOBAL long
+jdiv_round_up (long a, long b)
+/* Compute a/b rounded up to next integer, ie, ceil(a/b) */
+/* Assumes a >= 0, b > 0 */
+{
+  return (a + b - 1L) / b;
+}
+
+
+GLOBAL long
+jround_up (long a, long b)
+/* Compute a rounded up to next multiple of b, ie, ceil(a/b)*b */
+/* Assumes a >= 0, b > 0 */
+{
+  a += b - 1L;
+  return a - (a % b);
+}
+
+
+/* On normal machines we can apply MEMCOPY() and MEMZERO() to sample arrays
+ * and coefficient-block arrays.  This won't work on 80x86 because the arrays
+ * are FAR and we're assuming a small-pointer memory model.  However, some
+ * DOS compilers provide far-pointer versions of memcpy() and memset() even
+ * in the small-model libraries.  These will be used if USE_FMEM is defined.
+ * Otherwise, the routines below do it the hard way.  (The performance cost
+ * is not all that great, because these routines aren't very heavily used.)
+ */
+
+#ifndef NEED_FAR_POINTERS	/* normal case, same as regular macros */
+#define FMEMCOPY(dest,src,size)	MEMCOPY(dest,src,size)
+#define FMEMZERO(target,size)	MEMZERO(target,size)
+#else				/* 80x86 case, define if we can */
+#ifdef USE_FMEM
+#define FMEMCOPY(dest,src,size)	_fmemcpy((void FAR *)(dest), (const void FAR *)(src), (size_t)(size))
+#define FMEMZERO(target,size)	_fmemset((void FAR *)(target), 0, (size_t)(size))
+#endif
+#endif
+
+
+GLOBAL void
+jcopy_sample_rows (JSAMPARRAY input_array, int source_row,
+		   JSAMPARRAY output_array, int dest_row,
+		   int num_rows, JDIMENSION num_cols)
+/* Copy some rows of samples from one place to another.
+ * num_rows rows are copied from input_array[source_row++]
+ * to output_array[dest_row++]; these areas may overlap for duplication.
+ * The source and destination arrays must be at least as wide as num_cols.
+ */
+{
+  register JSAMPROW inptr, outptr;
+#ifdef FMEMCOPY
+  register size_t count = (size_t) (num_cols * SIZEOF(JSAMPLE));
+#else
+  register JDIMENSION count;
+#endif
+  register int row;
+
+  input_array += source_row;
+  output_array += dest_row;
+
+  for (row = num_rows; row > 0; row--) {
+    inptr = *input_array++;
+    outptr = *output_array++;
+#ifdef FMEMCOPY
+    FMEMCOPY(outptr, inptr, count);
+#else
+    for (count = num_cols; count > 0; count--)
+      *outptr++ = *inptr++;	/* needn't bother with GETJSAMPLE() here */
+#endif
+  }
+}
+
+
+GLOBAL void
+jcopy_block_row (JBLOCKROW input_row, JBLOCKROW output_row,
+		 JDIMENSION num_blocks)
+/* Copy a row of coefficient blocks from one place to another. */
+{
+#ifdef FMEMCOPY
+  FMEMCOPY(output_row, input_row, num_blocks * (DCTSIZE2 * SIZEOF(JCOEF)));
+#else
+  register JCOEFPTR inptr, outptr;
+  register long count;
+
+  inptr = (JCOEFPTR) input_row;
+  outptr = (JCOEFPTR) output_row;
+  for (count = (long) num_blocks * DCTSIZE2; count > 0; count--) {
+    *outptr++ = *inptr++;
+  }
+#endif
+}
+
+
+GLOBAL void
+jzero_far (void FAR * target, size_t bytestozero)
+/* Zero out a chunk of FAR memory. */
+/* This might be sample-array data, block-array data, or alloc_large data. */
+{
+#ifdef FMEMZERO
+  FMEMZERO(target, bytestozero);
+#else
+  register char FAR * ptr = (char FAR *) target;
+  register size_t count;
+
+  for (count = bytestozero; count > 0; count--) {
+    *ptr++ = 0;
+  }
+#endif
+}
diff --git a/libs/jpeg6/jversion.h b/libs/jpeg6/jversion.h
index 02083ac..f2f1b8d 100755
--- a/libs/jpeg6/jversion.h
+++ b/libs/jpeg6/jversion.h
@@ -1,14 +1,14 @@
-/*

- * jversion.h

- *

- * Copyright (C) 1991-1995, Thomas G. Lane.

- * This file is part of the Independent JPEG Group's software.

- * For conditions of distribution and use, see the accompanying README file.

- *

- * This file contains software version identification.

- */

-

-

-#define JVERSION	"6  2-Aug-95"

-

-#define JCOPYRIGHT	"Copyright (C) 1995, Thomas G. Lane"

+/*
+ * jversion.h
+ *
+ * Copyright (C) 1991-1995, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains software version identification.
+ */
+
+
+#define JVERSION	"6  2-Aug-95"
+
+#define JCOPYRIGHT	"Copyright (C) 1995, Thomas G. Lane"