Itsa me, quake3io!

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diff --git a/libs/jpeg6/README b/libs/jpeg6/README
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+The Independent JPEG Group's JPEG software
+==========================================
+
+README for release 6b of 27-Mar-1998
+====================================
+
+This distribution contains the sixth public release of the Independent JPEG
+Group's free JPEG software.  You are welcome to redistribute this software and
+to use it for any purpose, subject to the conditions under LEGAL ISSUES, below.
+
+Serious users of this software (particularly those incorporating it into
+larger programs) should contact IJG at jpeg-info@uunet.uu.net to be added to
+our electronic mailing list.  Mailing list members are notified of updates
+and have a chance to participate in technical discussions, etc.
+
+This software is the work of Tom Lane, Philip Gladstone, Jim Boucher,
+Lee Crocker, Julian Minguillon, Luis Ortiz, George Phillips, Davide Rossi,
+Guido Vollbeding, Ge' Weijers, and other members of the Independent JPEG
+Group.
+
+IJG is not affiliated with the official ISO JPEG standards committee.
+
+
+DOCUMENTATION ROADMAP
+=====================
+
+This file contains the following sections:
+
+OVERVIEW            General description of JPEG and the IJG software.
+LEGAL ISSUES        Copyright, lack of warranty, terms of distribution.
+REFERENCES          Where to learn more about JPEG.
+ARCHIVE LOCATIONS   Where to find newer versions of this software.
+RELATED SOFTWARE    Other stuff you should get.
+FILE FORMAT WARS    Software *not* to get.
+TO DO               Plans for future IJG releases.
+
+Other documentation files in the distribution are:
+
+User documentation:
+  install.doc       How to configure and install the IJG software.
+  usage.doc         Usage instructions for cjpeg, djpeg, jpegtran,
+                    rdjpgcom, and wrjpgcom.
+  *.1               Unix-style man pages for programs (same info as usage.doc).
+  wizard.doc        Advanced usage instructions for JPEG wizards only.
+  change.log        Version-to-version change highlights.
+Programmer and internal documentation:
+  libjpeg.doc       How to use the JPEG library in your own programs.
+  example.c         Sample code for calling the JPEG library.
+  structure.doc     Overview of the JPEG library's internal structure.
+  filelist.doc      Road map of IJG files.
+  coderules.doc     Coding style rules --- please read if you contribute code.
+
+Please read at least the files install.doc and usage.doc.  Useful information
+can also be found in the JPEG FAQ (Frequently Asked Questions) article.  See
+ARCHIVE LOCATIONS below to find out where to obtain the FAQ article.
+
+If you want to understand how the JPEG code works, we suggest reading one or
+more of the REFERENCES, then looking at the documentation files (in roughly
+the order listed) before diving into the code.
+
+
+OVERVIEW
+========
+
+This package contains C software to implement JPEG image compression and
+decompression.  JPEG (pronounced "jay-peg") is a standardized compression
+method for full-color and gray-scale images.  JPEG is intended for compressing
+"real-world" scenes; line drawings, cartoons and other non-realistic images
+are not its strong suit.  JPEG is lossy, meaning that the output image is not
+exactly identical to the input image.  Hence you must not use JPEG if you
+have to have identical output bits.  However, on typical photographic images,
+very good compression levels can be obtained with no visible change, and
+remarkably high compression levels are possible if you can tolerate a
+low-quality image.  For more details, see the references, or just experiment
+with various compression settings.
+
+This software implements JPEG baseline, extended-sequential, and progressive
+compression processes.  Provision is made for supporting all variants of these
+processes, although some uncommon parameter settings aren't implemented yet.
+For legal reasons, we are not distributing code for the arithmetic-coding
+variants of JPEG; see LEGAL ISSUES.  We have made no provision for supporting
+the hierarchical or lossless processes defined in the standard.
+
+We provide a set of library routines for reading and writing JPEG image files,
+plus two sample applications "cjpeg" and "djpeg", which use the library to
+perform conversion between JPEG and some other popular image file formats.
+The library is intended to be reused in other applications.
+
+In order to support file conversion and viewing software, we have included
+considerable functionality beyond the bare JPEG coding/decoding capability;
+for example, the color quantization modules are not strictly part of JPEG
+decoding, but they are essential for output to colormapped file formats or
+colormapped displays.  These extra functions can be compiled out of the
+library if not required for a particular application.  We have also included
+"jpegtran", a utility for lossless transcoding between different JPEG
+processes, and "rdjpgcom" and "wrjpgcom", two simple applications for
+inserting and extracting textual comments in JFIF files.
+
+The emphasis in designing this software has been on achieving portability and
+flexibility, while also making it fast enough to be useful.  In particular,
+the software is not intended to be read as a tutorial on JPEG.  (See the
+REFERENCES section for introductory material.)  Rather, it is intended to
+be reliable, portable, industrial-strength code.  We do not claim to have
+achieved that goal in every aspect of the software, but we strive for it.
+
+We welcome the use of this software as a component of commercial products.
+No royalty is required, but we do ask for an acknowledgement in product
+documentation, as described under LEGAL ISSUES.
+
+
+LEGAL ISSUES
+============
+
+In plain English:
+
+1. We don't promise that this software works.  (But if you find any bugs,
+   please let us know!)
+2. You can use this software for whatever you want.  You don't have to pay us.
+3. You may not pretend that you wrote this software.  If you use it in a
+   program, you must acknowledge somewhere in your documentation that
+   you've used the IJG code.
+
+In legalese:
+
+The authors make NO WARRANTY or representation, either express or implied,
+with respect to this software, its quality, accuracy, merchantability, or
+fitness for a particular purpose.  This software is provided "AS IS", and you,
+its user, assume the entire risk as to its quality and accuracy.
+
+This software is copyright (C) 1991-1998, Thomas G. Lane.
+All Rights Reserved except as specified below.
+
+Permission is hereby granted to use, copy, modify, and distribute this
+software (or portions thereof) for any purpose, without fee, subject to these
+conditions:
+(1) If any part of the source code for this software is distributed, then this
+README file must be included, with this copyright and no-warranty notice
+unaltered; and any additions, deletions, or changes to the original files
+must be clearly indicated in accompanying documentation.
+(2) If only executable code is distributed, then the accompanying
+documentation must state that "this software is based in part on the work of
+the Independent JPEG Group".
+(3) Permission for use of this software is granted only if the user accepts
+full responsibility for any undesirable consequences; the authors accept
+NO LIABILITY for damages of any kind.
+
+These conditions apply to any software derived from or based on the IJG code,
+not just to the unmodified library.  If you use our work, you ought to
+acknowledge us.
+
+Permission is NOT granted for the use of any IJG author's name or company name
+in advertising or publicity relating to this software or products derived from
+it.  This software may be referred to only as "the Independent JPEG Group's
+software".
+
+We specifically permit and encourage the use of this software as the basis of
+commercial products, provided that all warranty or liability claims are
+assumed by the product vendor.
+
+
+ansi2knr.c is included in this distribution by permission of L. Peter Deutsch,
+sole proprietor of its copyright holder, Aladdin Enterprises of Menlo Park, CA.
+ansi2knr.c is NOT covered by the above copyright and conditions, but instead
+by the usual distribution terms of the Free Software Foundation; principally,
+that you must include source code if you redistribute it.  (See the file
+ansi2knr.c for full details.)  However, since ansi2knr.c is not needed as part
+of any program generated from the IJG code, this does not limit you more than
+the foregoing paragraphs do.
+
+The Unix configuration script "configure" was produced with GNU Autoconf.
+It is copyright by the Free Software Foundation but is freely distributable.
+The same holds for its supporting scripts (config.guess, config.sub,
+ltconfig, ltmain.sh).  Another support script, install-sh, is copyright
+by M.I.T. but is also freely distributable.
+
+It appears that the arithmetic coding option of the JPEG spec is covered by
+patents owned by IBM, AT&T, and Mitsubishi.  Hence arithmetic coding cannot
+legally be used without obtaining one or more licenses.  For this reason,
+support for arithmetic coding has been removed from the free JPEG software.
+(Since arithmetic coding provides only a marginal gain over the unpatented
+Huffman mode, it is unlikely that very many implementations will support it.)
+So far as we are aware, there are no patent restrictions on the remaining
+code.
+
+The IJG distribution formerly included code to read and write GIF files.
+To avoid entanglement with the Unisys LZW patent, GIF reading support has
+been removed altogether, and the GIF writer has been simplified to produce
+"uncompressed GIFs".  This technique does not use the LZW algorithm; the
+resulting GIF files are larger than usual, but are readable by all standard
+GIF decoders.
+
+We are required to state that
+    "The Graphics Interchange Format(c) is the Copyright property of
+    CompuServe Incorporated.  GIF(sm) is a Service Mark property of
+    CompuServe Incorporated."
+
+
+REFERENCES
+==========
+
+We highly recommend reading one or more of these references before trying to
+understand the innards of the JPEG software.
+
+The best short technical introduction to the JPEG compression algorithm is
+	Wallace, Gregory K.  "The JPEG Still Picture Compression Standard",
+	Communications of the ACM, April 1991 (vol. 34 no. 4), pp. 30-44.
+(Adjacent articles in that issue discuss MPEG motion picture compression,
+applications of JPEG, and related topics.)  If you don't have the CACM issue
+handy, a PostScript file containing a revised version of Wallace's article is
+available at ftp://ftp.uu.net/graphics/jpeg/wallace.ps.gz.  The file (actually
+a preprint for an article that appeared in IEEE Trans. Consumer Electronics)
+omits the sample images that appeared in CACM, but it includes corrections
+and some added material.  Note: the Wallace article is copyright ACM and IEEE,
+and it may not be used for commercial purposes.
+
+A somewhat less technical, more leisurely introduction to JPEG can be found in
+"The Data Compression Book" by Mark Nelson and Jean-loup Gailly, published by
+M&T Books (New York), 2nd ed. 1996, ISBN 1-55851-434-1.  This book provides
+good explanations and example C code for a multitude of compression methods
+including JPEG.  It is an excellent source if you are comfortable reading C
+code but don't know much about data compression in general.  The book's JPEG
+sample code is far from industrial-strength, but when you are ready to look
+at a full implementation, you've got one here...
+
+The best full description of JPEG is the textbook "JPEG Still Image Data
+Compression Standard" by William B. Pennebaker and Joan L. Mitchell, published
+by Van Nostrand Reinhold, 1993, ISBN 0-442-01272-1.  Price US$59.95, 638 pp.
+The book includes the complete text of the ISO JPEG standards (DIS 10918-1
+and draft DIS 10918-2).  This is by far the most complete exposition of JPEG
+in existence, and we highly recommend it.
+
+The JPEG standard itself is not available electronically; you must order a
+paper copy through ISO or ITU.  (Unless you feel a need to own a certified
+official copy, we recommend buying the Pennebaker and Mitchell book instead;
+it's much cheaper and includes a great deal of useful explanatory material.)
+In the USA, copies of the standard may be ordered from ANSI Sales at (212)
+642-4900, or from Global Engineering Documents at (800) 854-7179.  (ANSI
+doesn't take credit card orders, but Global does.)  It's not cheap: as of
+1992, ANSI was charging $95 for Part 1 and $47 for Part 2, plus 7%
+shipping/handling.  The standard is divided into two parts, Part 1 being the
+actual specification, while Part 2 covers compliance testing methods.  Part 1
+is titled "Digital Compression and Coding of Continuous-tone Still Images,
+Part 1: Requirements and guidelines" and has document numbers ISO/IEC IS
+10918-1, ITU-T T.81.  Part 2 is titled "Digital Compression and Coding of
+Continuous-tone Still Images, Part 2: Compliance testing" and has document
+numbers ISO/IEC IS 10918-2, ITU-T T.83.
+
+Some extensions to the original JPEG standard are defined in JPEG Part 3,
+a newer ISO standard numbered ISO/IEC IS 10918-3 and ITU-T T.84.  IJG
+currently does not support any Part 3 extensions.
+
+The JPEG standard does not specify all details of an interchangeable file
+format.  For the omitted details we follow the "JFIF" conventions, revision
+1.02.  A copy of the JFIF spec is available from:
+	Literature Department
+	C-Cube Microsystems, Inc.
+	1778 McCarthy Blvd.
+	Milpitas, CA 95035
+	phone (408) 944-6300,  fax (408) 944-6314
+A PostScript version of this document is available by FTP at
+ftp://ftp.uu.net/graphics/jpeg/jfif.ps.gz.  There is also a plain text
+version at ftp://ftp.uu.net/graphics/jpeg/jfif.txt.gz, but it is missing
+the figures.
+
+The TIFF 6.0 file format specification can be obtained by FTP from
+ftp://ftp.sgi.com/graphics/tiff/TIFF6.ps.gz.  The JPEG incorporation scheme
+found in the TIFF 6.0 spec of 3-June-92 has a number of serious problems.
+IJG does not recommend use of the TIFF 6.0 design (TIFF Compression tag 6).
+Instead, we recommend the JPEG design proposed by TIFF Technical Note #2
+(Compression tag 7).  Copies of this Note can be obtained from ftp.sgi.com or
+from ftp://ftp.uu.net/graphics/jpeg/.  It is expected that the next revision
+of the TIFF spec will replace the 6.0 JPEG design with the Note's design.
+Although IJG's own code does not support TIFF/JPEG, the free libtiff library
+uses our library to implement TIFF/JPEG per the Note.  libtiff is available
+from ftp://ftp.sgi.com/graphics/tiff/.
+
+
+ARCHIVE LOCATIONS
+=================
+
+The "official" archive site for this software is ftp.uu.net (Internet
+address 192.48.96.9).  The most recent released version can always be found
+there in directory graphics/jpeg.  This particular version will be archived
+as ftp://ftp.uu.net/graphics/jpeg/jpegsrc.v6b.tar.gz.  If you don't have
+direct Internet access, UUNET's archives are also available via UUCP; contact
+help@uunet.uu.net for information on retrieving files that way.
+
+Numerous Internet sites maintain copies of the UUNET files.  However, only
+ftp.uu.net is guaranteed to have the latest official version.
+
+You can also obtain this software in DOS-compatible "zip" archive format from
+the SimTel archives (ftp://ftp.simtel.net/pub/simtelnet/msdos/graphics/), or
+on CompuServe in the Graphics Support forum (GO CIS:GRAPHSUP), library 12
+"JPEG Tools".  Again, these versions may sometimes lag behind the ftp.uu.net
+release.
+
+The JPEG FAQ (Frequently Asked Questions) article is a useful source of
+general information about JPEG.  It is updated constantly and therefore is
+not included in this distribution.  The FAQ is posted every two weeks to
+Usenet newsgroups comp.graphics.misc, news.answers, and other groups.
+It is available on the World Wide Web at http://www.faqs.org/faqs/jpeg-faq/
+and other news.answers archive sites, including the official news.answers
+archive at rtfm.mit.edu: ftp://rtfm.mit.edu/pub/usenet/news.answers/jpeg-faq/.
+If you don't have Web or FTP access, send e-mail to mail-server@rtfm.mit.edu
+with body
+	send usenet/news.answers/jpeg-faq/part1
+	send usenet/news.answers/jpeg-faq/part2
+
+
+RELATED SOFTWARE
+================
+
+Numerous viewing and image manipulation programs now support JPEG.  (Quite a
+few of them use this library to do so.)  The JPEG FAQ described above lists
+some of the more popular free and shareware viewers, and tells where to
+obtain them on Internet.
+
+If you are on a Unix machine, we highly recommend Jef Poskanzer's free
+PBMPLUS software, which provides many useful operations on PPM-format image
+files.  In particular, it can convert PPM images to and from a wide range of
+other formats, thus making cjpeg/djpeg considerably more useful.  The latest
+version is distributed by the NetPBM group, and is available from numerous
+sites, notably ftp://wuarchive.wustl.edu/graphics/graphics/packages/NetPBM/.
+Unfortunately PBMPLUS/NETPBM is not nearly as portable as the IJG software is;
+you are likely to have difficulty making it work on any non-Unix machine.
+
+A different free JPEG implementation, written by the PVRG group at Stanford,
+is available from ftp://havefun.stanford.edu/pub/jpeg/.  This program
+is designed for research and experimentation rather than production use;
+it is slower, harder to use, and less portable than the IJG code, but it
+is easier to read and modify.  Also, the PVRG code supports lossless JPEG,
+which we do not.  (On the other hand, it doesn't do progressive JPEG.)
+
+
+FILE FORMAT WARS
+================
+
+Some JPEG programs produce files that are not compatible with our library.
+The root of the problem is that the ISO JPEG committee failed to specify a
+concrete file format.  Some vendors "filled in the blanks" on their own,
+creating proprietary formats that no one else could read.  (For example, none
+of the early commercial JPEG implementations for the Macintosh were able to
+exchange compressed files.)
+
+The file format we have adopted is called JFIF (see REFERENCES).  This format
+has been agreed to by a number of major commercial JPEG vendors, and it has
+become the de facto standard.  JFIF is a minimal or "low end" representation.
+We recommend the use of TIFF/JPEG (TIFF revision 6.0 as modified by TIFF
+Technical Note #2) for "high end" applications that need to record a lot of
+additional data about an image.  TIFF/JPEG is fairly new and not yet widely
+supported, unfortunately.
+
+The upcoming JPEG Part 3 standard defines a file format called SPIFF.
+SPIFF is interoperable with JFIF, in the sense that most JFIF decoders should
+be able to read the most common variant of SPIFF.  SPIFF has some technical
+advantages over JFIF, but its major claim to fame is simply that it is an
+official standard rather than an informal one.  At this point it is unclear
+whether SPIFF will supersede JFIF or whether JFIF will remain the de-facto
+standard.  IJG intends to support SPIFF once the standard is frozen, but we
+have not decided whether it should become our default output format or not.
+(In any case, our decoder will remain capable of reading JFIF indefinitely.)
+
+Various proprietary file formats incorporating JPEG compression also exist.
+We have little or no sympathy for the existence of these formats.  Indeed,
+one of the original reasons for developing this free software was to help
+force convergence on common, open format standards for JPEG files.  Don't
+use a proprietary file format!
+
+
+TO DO
+=====
+
+The major thrust for v7 will probably be improvement of visual quality.
+The current method for scaling the quantization tables is known not to be
+very good at low Q values.  We also intend to investigate block boundary
+smoothing, "poor man's variable quantization", and other means of improving
+quality-vs-file-size performance without sacrificing compatibility.
+
+In future versions, we are considering supporting some of the upcoming JPEG
+Part 3 extensions --- principally, variable quantization and the SPIFF file
+format.
+
+As always, speeding things up is of great interest.
+
+Please send bug reports, offers of help, etc. to jpeg-info@uunet.uu.net.
diff --git a/libs/jpeg6/jchuff.h b/libs/jpeg6/jchuff.h
new file mode 100755
index 0000000..0a81d54
--- /dev/null
+++ b/libs/jpeg6/jchuff.h
@@ -0,0 +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[]));

diff --git a/libs/jpeg6/jcomapi.cpp b/libs/jpeg6/jcomapi.cpp
new file mode 100755
index 0000000..8f417c0
--- /dev/null
+++ b/libs/jpeg6/jcomapi.cpp
@@ -0,0 +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;

+}

diff --git a/libs/jpeg6/jconfig.h b/libs/jpeg6/jconfig.h
new file mode 100755
index 0000000..187ecfc
--- /dev/null
+++ b/libs/jpeg6/jconfig.h
@@ -0,0 +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 */

diff --git a/libs/jpeg6/jdapimin.cpp b/libs/jpeg6/jdapimin.cpp
new file mode 100755
index 0000000..1bae6a2
--- /dev/null
+++ b/libs/jpeg6/jdapimin.cpp
@@ -0,0 +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;

+}

diff --git a/libs/jpeg6/jdapistd.cpp b/libs/jpeg6/jdapistd.cpp
new file mode 100755
index 0000000..7781e16
--- /dev/null
+++ b/libs/jpeg6/jdapistd.cpp
@@ -0,0 +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 */

diff --git a/libs/jpeg6/jdatasrc.cpp b/libs/jpeg6/jdatasrc.cpp
new file mode 100755
index 0000000..5c1696d
--- /dev/null
+++ b/libs/jpeg6/jdatasrc.cpp
@@ -0,0 +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 */

+}

diff --git a/libs/jpeg6/jdcoefct.cpp b/libs/jpeg6/jdcoefct.cpp
new file mode 100755
index 0000000..2b20c07
--- /dev/null
+++ b/libs/jpeg6/jdcoefct.cpp
@@ -0,0 +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 */

+  }

+}

diff --git a/libs/jpeg6/jdcolor.cpp b/libs/jpeg6/jdcolor.cpp
new file mode 100755
index 0000000..d360b53
--- /dev/null
+++ b/libs/jpeg6/jdcolor.cpp
@@ -0,0 +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;

+}

diff --git a/libs/jpeg6/jdct.h b/libs/jpeg6/jdct.h
new file mode 100755
index 0000000..1d66d4f
--- /dev/null
+++ b/libs/jpeg6/jdct.h
@@ -0,0 +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

diff --git a/libs/jpeg6/jddctmgr.cpp b/libs/jpeg6/jddctmgr.cpp
new file mode 100755
index 0000000..ba01fc6
--- /dev/null
+++ b/libs/jpeg6/jddctmgr.cpp
@@ -0,0 +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;

+  }

+}

diff --git a/libs/jpeg6/jdhuff.cpp b/libs/jpeg6/jdhuff.cpp
new file mode 100755
index 0000000..db42772
--- /dev/null
+++ b/libs/jpeg6/jdhuff.cpp
@@ -0,0 +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;

+  }

+}

diff --git a/libs/jpeg6/jdhuff.h b/libs/jpeg6/jdhuff.h
new file mode 100755
index 0000000..65f3054
--- /dev/null
+++ b/libs/jpeg6/jdhuff.h
@@ -0,0 +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));

diff --git a/libs/jpeg6/jdinput.cpp b/libs/jpeg6/jdinput.cpp
new file mode 100755
index 0000000..5b4774f
--- /dev/null
+++ b/libs/jpeg6/jdinput.cpp
@@ -0,0 +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;

+}

diff --git a/libs/jpeg6/jdmainct.cpp b/libs/jpeg6/jdmainct.cpp
new file mode 100755
index 0000000..c4e0d54
--- /dev/null
+++ b/libs/jpeg6/jdmainct.cpp
@@ -0,0 +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));

+  }

+}

diff --git a/libs/jpeg6/jdmarker.cpp b/libs/jpeg6/jdmarker.cpp
new file mode 100755
index 0000000..6c3c519
--- /dev/null
+++ b/libs/jpeg6/jdmarker.cpp
@@ -0,0 +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);

+}

diff --git a/libs/jpeg6/jdmaster.cpp b/libs/jpeg6/jdmaster.cpp
new file mode 100755
index 0000000..64f730f
--- /dev/null
+++ b/libs/jpeg6/jdmaster.cpp
@@ -0,0 +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);

+}

diff --git a/libs/jpeg6/jdpostct.cpp b/libs/jpeg6/jdpostct.cpp
new file mode 100755
index 0000000..e3283b0
--- /dev/null
+++ b/libs/jpeg6/jdpostct.cpp
@@ -0,0 +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);

+    }

+  }

+}

diff --git a/libs/jpeg6/jdsample.cpp b/libs/jpeg6/jdsample.cpp
new file mode 100755
index 0000000..bc171f4
--- /dev/null
+++ b/libs/jpeg6/jdsample.cpp
@@ -0,0 +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);

+    }

+  }

+}

diff --git a/libs/jpeg6/jdtrans.cpp b/libs/jpeg6/jdtrans.cpp
new file mode 100755
index 0000000..eb873e0
--- /dev/null
+++ b/libs/jpeg6/jdtrans.cpp
@@ -0,0 +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;

+  }

+}

diff --git a/libs/jpeg6/jerror.cpp b/libs/jpeg6/jerror.cpp
new file mode 100755
index 0000000..09027d8
--- /dev/null
+++ b/libs/jpeg6/jerror.cpp
@@ -0,0 +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;

+}

diff --git a/libs/jpeg6/jerror.h b/libs/jpeg6/jerror.h
new file mode 100755
index 0000000..0ffb8b4
--- /dev/null
+++ b/libs/jpeg6/jerror.h
@@ -0,0 +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 */

diff --git a/libs/jpeg6/jfdctflt.cpp b/libs/jpeg6/jfdctflt.cpp
new file mode 100755
index 0000000..1509b88
--- /dev/null
+++ b/libs/jpeg6/jfdctflt.cpp
@@ -0,0 +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 */

diff --git a/libs/jpeg6/jidctflt.cpp b/libs/jpeg6/jidctflt.cpp
new file mode 100755
index 0000000..2e25c44
--- /dev/null
+++ b/libs/jpeg6/jidctflt.cpp
@@ -0,0 +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 */

diff --git a/libs/jpeg6/jinclude.h b/libs/jpeg6/jinclude.h
new file mode 100755
index 0000000..5ff60fe
--- /dev/null
+++ b/libs/jpeg6/jinclude.h
@@ -0,0 +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)))

diff --git a/libs/jpeg6/jmemmgr.cpp b/libs/jpeg6/jmemmgr.cpp
new file mode 100755
index 0000000..61045f9
--- /dev/null
+++ b/libs/jpeg6/jmemmgr.cpp
@@ -0,0 +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

+

+}

diff --git a/libs/jpeg6/jmemnobs.cpp b/libs/jpeg6/jmemnobs.cpp
new file mode 100755
index 0000000..e63e5e4
--- /dev/null
+++ b/libs/jpeg6/jmemnobs.cpp
@@ -0,0 +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 */

+}

diff --git a/libs/jpeg6/jmemsys.h b/libs/jpeg6/jmemsys.h
new file mode 100755
index 0000000..0c7d7c1
--- /dev/null
+++ b/libs/jpeg6/jmemsys.h
@@ -0,0 +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));

diff --git a/libs/jpeg6/jmorecfg.h b/libs/jpeg6/jmorecfg.h
new file mode 100755
index 0000000..d451399
--- /dev/null
+++ b/libs/jpeg6/jmorecfg.h
@@ -0,0 +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 */

diff --git a/libs/jpeg6/jpeg6.vcproj b/libs/jpeg6/jpeg6.vcproj
new file mode 100755
index 0000000..f17e134
--- /dev/null
+++ b/libs/jpeg6/jpeg6.vcproj
@@ -0,0 +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

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jdapimin.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jdapistd.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jdatasrc.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jdcoefct.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jdcolor.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jddctmgr.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jdhuff.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jdinput.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jdmainct.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jdmarker.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jdmaster.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jdpostct.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jdsample.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jdtrans.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jerror.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jfdctflt.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jidctflt.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jmemmgr.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jmemnobs.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jpgload.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+			<File

+				RelativePath="jutils.cpp">

+				<FileConfiguration

+					Name="Release|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="2"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""/>

+				</FileConfiguration>

+				<FileConfiguration

+					Name="Debug|Win32">

+					<Tool

+						Name="VCCLCompilerTool"

+						Optimization="0"

+						AdditionalIncludeDirectories=""

+						PreprocessorDefinitions=""

+						BasicRuntimeChecks="3"/>

+				</FileConfiguration>

+			</File>

+		</Filter>

+		<Filter

+			Name="Header Files"

+			Filter="h;hpp;hxx;hm;inl">

+			<File

+				RelativePath="jchuff.h">

+			</File>

+			<File

+				RelativePath="jconfig.h">

+			</File>

+			<File

+				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
new file mode 100755
index 0000000..b3b6a6d
--- /dev/null
+++ b/libs/jpeg6/jpegint.h
@@ -0,0 +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 */

diff --git a/libs/jpeg6/jpgload.cpp b/libs/jpeg6/jpgload.cpp
new file mode 100755
index 0000000..1006b99
--- /dev/null
+++ b/libs/jpeg6/jpgload.cpp
@@ -0,0 +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! */

+}

+

diff --git a/libs/jpeg6/jutils.cpp b/libs/jpeg6/jutils.cpp
new file mode 100755
index 0000000..8e8dc13
--- /dev/null
+++ b/libs/jpeg6/jutils.cpp
@@ -0,0 +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

+}

diff --git a/libs/jpeg6/jversion.h b/libs/jpeg6/jversion.h
new file mode 100755
index 0000000..02083ac
--- /dev/null
+++ b/libs/jpeg6/jversion.h
@@ -0,0 +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"