Added libspeex to revision control, and updated Makefile to use it.

git-svn-id: svn://svn.icculus.org/quake3/trunk@1352 edf5b092-35ff-0310-97b2-ce42778d08ea

12 files changed, 1975 insertions, 0 deletions

diff --git a/code/libspeex/include/speex/speex.h b/code/libspeex/include/speex/speex.h
new file mode 100644
index 0000000..82ba016
--- /dev/null
+++ b/code/libspeex/include/speex/speex.h
@@ -0,0 +1,424 @@
+/* Copyright (C) 2002-2006 Jean-Marc Valin*/
+/**
+  @file speex.h
+  @brief Describes the different modes of the codec
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifndef SPEEX_H
+#define SPEEX_H
+/** @defgroup Codec Speex encoder and decoder
+ *  This is the Speex codec itself.
+ *  @{
+ */
+
+#include "speex/speex_bits.h"
+#include "speex/speex_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Values allowed for *ctl() requests */
+
+/** Set enhancement on/off (decoder only) */
+#define SPEEX_SET_ENH 0
+/** Get enhancement state (decoder only) */
+#define SPEEX_GET_ENH 1
+
+/*Would be SPEEX_SET_FRAME_SIZE, but it's (currently) invalid*/
+/** Obtain frame size used by encoder/decoder */
+#define SPEEX_GET_FRAME_SIZE 3
+
+/** Set quality value */
+#define SPEEX_SET_QUALITY 4
+/** Get current quality setting */
+/* #define SPEEX_GET_QUALITY 5 -- Doesn't make much sense, does it? */
+
+/** Set sub-mode to use */
+#define SPEEX_SET_MODE 6
+/** Get current sub-mode in use */
+#define SPEEX_GET_MODE 7
+
+/** Set low-band sub-mode to use (wideband only)*/
+#define SPEEX_SET_LOW_MODE 8
+/** Get current low-band mode in use (wideband only)*/
+#define SPEEX_GET_LOW_MODE 9
+
+/** Set high-band sub-mode to use (wideband only)*/
+#define SPEEX_SET_HIGH_MODE 10
+/** Get current high-band mode in use (wideband only)*/
+#define SPEEX_GET_HIGH_MODE 11
+
+/** Set VBR on (1) or off (0) */
+#define SPEEX_SET_VBR 12
+/** Get VBR status (1 for on, 0 for off) */
+#define SPEEX_GET_VBR 13
+
+/** Set quality value for VBR encoding (0-10) */
+#define SPEEX_SET_VBR_QUALITY 14
+/** Get current quality value for VBR encoding (0-10) */
+#define SPEEX_GET_VBR_QUALITY 15
+
+/** Set complexity of the encoder (0-10) */
+#define SPEEX_SET_COMPLEXITY 16
+/** Get current complexity of the encoder (0-10) */
+#define SPEEX_GET_COMPLEXITY 17
+
+/** Set bit-rate used by the encoder (or lower) */
+#define SPEEX_SET_BITRATE 18
+/** Get current bit-rate used by the encoder or decoder */
+#define SPEEX_GET_BITRATE 19
+
+/** Define a handler function for in-band Speex request*/
+#define SPEEX_SET_HANDLER 20
+
+/** Define a handler function for in-band user-defined request*/
+#define SPEEX_SET_USER_HANDLER 22
+
+/** Set sampling rate used in bit-rate computation */
+#define SPEEX_SET_SAMPLING_RATE 24
+/** Get sampling rate used in bit-rate computation */
+#define SPEEX_GET_SAMPLING_RATE 25
+
+/** Reset the encoder/decoder memories to zero*/
+#define SPEEX_RESET_STATE 26
+
+/** Get VBR info (mostly used internally) */
+#define SPEEX_GET_RELATIVE_QUALITY 29
+
+/** Set VAD status (1 for on, 0 for off) */
+#define SPEEX_SET_VAD 30
+
+/** Get VAD status (1 for on, 0 for off) */
+#define SPEEX_GET_VAD 31
+
+/** Set Average Bit-Rate (ABR) to n bits per seconds */
+#define SPEEX_SET_ABR 32
+/** Get Average Bit-Rate (ABR) setting (in bps) */
+#define SPEEX_GET_ABR 33
+
+/** Set DTX status (1 for on, 0 for off) */
+#define SPEEX_SET_DTX 34
+/** Get DTX status (1 for on, 0 for off) */
+#define SPEEX_GET_DTX 35
+
+/** Set submode encoding in each frame (1 for yes, 0 for no, setting to no breaks the standard) */
+#define SPEEX_SET_SUBMODE_ENCODING 36
+/** Get submode encoding in each frame */
+#define SPEEX_GET_SUBMODE_ENCODING 37
+
+/*#define SPEEX_SET_LOOKAHEAD 38*/
+/** Returns the lookahead used by Speex */
+#define SPEEX_GET_LOOKAHEAD 39
+
+/** Sets tuning for packet-loss concealment (expected loss rate) */
+#define SPEEX_SET_PLC_TUNING 40
+/** Gets tuning for PLC */
+#define SPEEX_GET_PLC_TUNING 41
+
+/** Sets the max bit-rate allowed in VBR mode */
+#define SPEEX_SET_VBR_MAX_BITRATE 42
+/** Gets the max bit-rate allowed in VBR mode */
+#define SPEEX_GET_VBR_MAX_BITRATE 43
+
+/** Turn on/off input/output high-pass filtering */
+#define SPEEX_SET_HIGHPASS 44
+/** Get status of input/output high-pass filtering */
+#define SPEEX_GET_HIGHPASS 45
+
+/** Get "activity level" of the last decoded frame, i.e.
+    how much damage we cause if we remove the frame */
+#define SPEEX_GET_ACTIVITY 47
+
+
+/* Preserving compatibility:*/
+/** Equivalent to SPEEX_SET_ENH */
+#define SPEEX_SET_PF 0
+/** Equivalent to SPEEX_GET_ENH */
+#define SPEEX_GET_PF 1
+
+
+
+
+/* Values allowed for mode queries */
+/** Query the frame size of a mode */
+#define SPEEX_MODE_FRAME_SIZE 0
+
+/** Query the size of an encoded frame for a particular sub-mode */
+#define SPEEX_SUBMODE_BITS_PER_FRAME 1
+
+
+
+/** Get major Speex version */
+#define SPEEX_LIB_GET_MAJOR_VERSION 1
+/** Get minor Speex version */
+#define SPEEX_LIB_GET_MINOR_VERSION 3
+/** Get micro Speex version */
+#define SPEEX_LIB_GET_MICRO_VERSION 5
+/** Get extra Speex version */
+#define SPEEX_LIB_GET_EXTRA_VERSION 7
+/** Get Speex version string */
+#define SPEEX_LIB_GET_VERSION_STRING 9
+
+/*#define SPEEX_LIB_SET_ALLOC_FUNC 10
+#define SPEEX_LIB_GET_ALLOC_FUNC 11
+#define SPEEX_LIB_SET_FREE_FUNC 12
+#define SPEEX_LIB_GET_FREE_FUNC 13
+
+#define SPEEX_LIB_SET_WARNING_FUNC 14
+#define SPEEX_LIB_GET_WARNING_FUNC 15
+#define SPEEX_LIB_SET_ERROR_FUNC 16
+#define SPEEX_LIB_GET_ERROR_FUNC 17
+*/
+
+/** Number of defined modes in Speex */
+#define SPEEX_NB_MODES 3
+
+/** modeID for the defined narrowband mode */
+#define SPEEX_MODEID_NB 0
+
+/** modeID for the defined wideband mode */
+#define SPEEX_MODEID_WB 1
+
+/** modeID for the defined ultra-wideband mode */
+#define SPEEX_MODEID_UWB 2
+
+struct SpeexMode;
+
+
+/* Prototypes for mode function pointers */
+
+/** Encoder state initialization function */
+typedef void *(*encoder_init_func)(const struct SpeexMode *mode);
+
+/** Encoder state destruction function */
+typedef void (*encoder_destroy_func)(void *st);
+
+/** Main encoding function */
+typedef int (*encode_func)(void *state, void *in, SpeexBits *bits);
+
+/** Function for controlling the encoder options */
+typedef int (*encoder_ctl_func)(void *state, int request, void *ptr);
+
+/** Decoder state initialization function */
+typedef void *(*decoder_init_func)(const struct SpeexMode *mode);
+
+/** Decoder state destruction function */
+typedef void (*decoder_destroy_func)(void *st);
+
+/** Main decoding function */
+typedef int  (*decode_func)(void *state, SpeexBits *bits, void *out);
+
+/** Function for controlling the decoder options */
+typedef int (*decoder_ctl_func)(void *state, int request, void *ptr);
+
+
+/** Query function for a mode */
+typedef int (*mode_query_func)(const void *mode, int request, void *ptr);
+
+/** Struct defining a Speex mode */ 
+typedef struct SpeexMode {
+   /** Pointer to the low-level mode data */
+   const void *mode;
+
+   /** Pointer to the mode query function */
+   mode_query_func query;
+   
+   /** The name of the mode (you should not rely on this to identify the mode)*/
+   const char *modeName;
+
+   /**ID of the mode*/
+   int modeID;
+
+   /**Version number of the bitstream (incremented every time we break
+    bitstream compatibility*/
+   int bitstream_version;
+
+   /** Pointer to encoder initialization function */
+   encoder_init_func enc_init;
+
+   /** Pointer to encoder destruction function */
+   encoder_destroy_func enc_destroy;
+
+   /** Pointer to frame encoding function */
+   encode_func enc;
+
+   /** Pointer to decoder initialization function */
+   decoder_init_func dec_init;
+
+   /** Pointer to decoder destruction function */
+   decoder_destroy_func dec_destroy;
+
+   /** Pointer to frame decoding function */
+   decode_func dec;
+
+   /** ioctl-like requests for encoder */
+   encoder_ctl_func enc_ctl;
+
+   /** ioctl-like requests for decoder */
+   decoder_ctl_func dec_ctl;
+
+} SpeexMode;
+
+/**
+ * Returns a handle to a newly created Speex encoder state structure. For now, 
+ * the "mode" argument can be &nb_mode or &wb_mode . In the future, more modes 
+ * may be added. Note that for now if you have more than one channels to 
+ * encode, you need one state per channel.
+ *
+ * @param mode The mode to use (either speex_nb_mode or speex_wb.mode) 
+ * @return A newly created encoder state or NULL if state allocation fails
+ */
+void *speex_encoder_init(const SpeexMode *mode);
+
+/** Frees all resources associated to an existing Speex encoder state. 
+ * @param state Encoder state to be destroyed */
+void speex_encoder_destroy(void *state);
+
+/** Uses an existing encoder state to encode one frame of speech pointed to by
+    "in". The encoded bit-stream is saved in "bits".
+ @param state Encoder state
+ @param in Frame that will be encoded with a +-2^15 range. This data MAY be 
+        overwritten by the encoder and should be considered uninitialised 
+        after the call.
+ @param bits Bit-stream where the data will be written
+ @return 0 if frame needs not be transmitted (DTX only), 1 otherwise
+ */
+int speex_encode(void *state, float *in, SpeexBits *bits);
+
+/** Uses an existing encoder state to encode one frame of speech pointed to by
+    "in". The encoded bit-stream is saved in "bits".
+ @param state Encoder state
+ @param in Frame that will be encoded with a +-2^15 range
+ @param bits Bit-stream where the data will be written
+ @return 0 if frame needs not be transmitted (DTX only), 1 otherwise
+ */
+int speex_encode_int(void *state, spx_int16_t *in, SpeexBits *bits);
+
+/** Used like the ioctl function to control the encoder parameters
+ *
+ * @param state Encoder state
+ * @param request ioctl-type request (one of the SPEEX_* macros)
+ * @param ptr Data exchanged to-from function
+ * @return 0 if no error, -1 if request in unknown, -2 for invalid parameter
+ */
+int speex_encoder_ctl(void *state, int request, void *ptr);
+
+
+/** Returns a handle to a newly created decoder state structure. For now, 
+ * the mode argument can be &nb_mode or &wb_mode . In the future, more modes
+ * may be added.  Note that for now if you have more than one channels to
+ * decode, you need one state per channel.
+ *
+ * @param mode Speex mode (one of speex_nb_mode or speex_wb_mode)
+ * @return A newly created decoder state or NULL if state allocation fails
+ */ 
+void *speex_decoder_init(const SpeexMode *mode);
+
+/** Frees all resources associated to an existing decoder state.
+ *
+ * @param state State to be destroyed
+ */
+void speex_decoder_destroy(void *state);
+
+/** Uses an existing decoder state to decode one frame of speech from
+ * bit-stream bits. The output speech is saved written to out.
+ *
+ * @param state Decoder state
+ * @param bits Bit-stream from which to decode the frame (NULL if the packet was lost)
+ * @param out Where to write the decoded frame
+ * @return return status (0 for no error, -1 for end of stream, -2 corrupt stream)
+ */
+int speex_decode(void *state, SpeexBits *bits, float *out);
+
+/** Uses an existing decoder state to decode one frame of speech from
+ * bit-stream bits. The output speech is saved written to out.
+ *
+ * @param state Decoder state
+ * @param bits Bit-stream from which to decode the frame (NULL if the packet was lost)
+ * @param out Where to write the decoded frame
+ * @return return status (0 for no error, -1 for end of stream, -2 corrupt stream)
+ */
+int speex_decode_int(void *state, SpeexBits *bits, spx_int16_t *out);
+
+/** Used like the ioctl function to control the encoder parameters
+ *
+ * @param state Decoder state
+ * @param request ioctl-type request (one of the SPEEX_* macros)
+ * @param ptr Data exchanged to-from function
+ * @return 0 if no error, -1 if request in unknown, -2 for invalid parameter
+ */
+int speex_decoder_ctl(void *state, int request, void *ptr);
+
+
+/** Query function for mode information
+ *
+ * @param mode Speex mode
+ * @param request ioctl-type request (one of the SPEEX_* macros)
+ * @param ptr Data exchanged to-from function
+ * @return 0 if no error, -1 if request in unknown, -2 for invalid parameter
+ */
+int speex_mode_query(const SpeexMode *mode, int request, void *ptr);
+
+/** Functions for controlling the behavior of libspeex
+ * @param request ioctl-type request (one of the SPEEX_LIB_* macros)
+ * @param ptr Data exchanged to-from function
+ * @return 0 if no error, -1 if request in unknown, -2 for invalid parameter
+ */
+int speex_lib_ctl(int request, void *ptr);
+
+/** Default narrowband mode */
+extern const SpeexMode speex_nb_mode;
+
+/** Default wideband mode */
+extern const SpeexMode speex_wb_mode;
+
+/** Default "ultra-wideband" mode */
+extern const SpeexMode speex_uwb_mode;
+
+/** List of all modes available */
+extern const SpeexMode * const speex_mode_list[SPEEX_NB_MODES];
+
+/** Obtain one of the modes available */
+const SpeexMode * speex_lib_get_mode (int mode);
+
+#ifndef WIN32
+/* We actually override the function in the narrowband case so that we can avoid linking in the wideband stuff */
+#define speex_lib_get_mode(mode) ((mode)==SPEEX_MODEID_NB ? &speex_nb_mode : speex_lib_get_mode (mode))
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @}*/
+#endif
diff --git a/code/libspeex/include/speex/speex_bits.h b/code/libspeex/include/speex/speex_bits.h
new file mode 100644
index 0000000..a26fb4c
--- /dev/null
+++ b/code/libspeex/include/speex/speex_bits.h
@@ -0,0 +1,174 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file speex_bits.h
+   @brief Handles bit packing/unpacking
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifndef BITS_H
+#define BITS_H
+/** @defgroup SpeexBits SpeexBits: Bit-stream manipulations
+ *  This is the structure that holds the bit-stream when encoding or decoding
+ * with Speex. It allows some manipulations as well.
+ *  @{
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Bit-packing data structure representing (part of) a bit-stream. */
+typedef struct SpeexBits {
+   char *chars;   /**< "raw" data */
+   int   nbBits;  /**< Total number of bits stored in the stream*/
+   int   charPtr; /**< Position of the byte "cursor" */
+   int   bitPtr;  /**< Position of the bit "cursor" within the current char */
+   int   owner;   /**< Does the struct "own" the "raw" buffer (member "chars") */
+   int   overflow;/**< Set to one if we try to read past the valid data */
+   int   buf_size;/**< Allocated size for buffer */
+   int   reserved1; /**< Reserved for future use */
+   void *reserved2; /**< Reserved for future use */
+} SpeexBits;
+
+/** Initializes and allocates resources for a SpeexBits struct */
+void speex_bits_init(SpeexBits *bits);
+
+/** Initializes SpeexBits struct using a pre-allocated buffer*/
+void speex_bits_init_buffer(SpeexBits *bits, void *buff, int buf_size);
+
+/** Sets the bits in a SpeexBits struct to use data from an existing buffer (for decoding without copying data) */
+void speex_bits_set_bit_buffer(SpeexBits *bits, void *buff, int buf_size);
+
+/** Frees all resources associated to a SpeexBits struct. Right now this does nothing since no resources are allocated, but this could change in the future.*/
+void speex_bits_destroy(SpeexBits *bits);
+
+/** Resets bits to initial value (just after initialization, erasing content)*/
+void speex_bits_reset(SpeexBits *bits);
+
+/** Rewind the bit-stream to the beginning (ready for read) without erasing the content */
+void speex_bits_rewind(SpeexBits *bits);
+
+/** Initializes the bit-stream from the data in an area of memory */
+void speex_bits_read_from(SpeexBits *bits, char *bytes, int len);
+
+/** Append bytes to the bit-stream
+ * 
+ * @param bits Bit-stream to operate on
+ * @param bytes pointer to the bytes what will be appended
+ * @param len Number of bytes of append
+ */
+void speex_bits_read_whole_bytes(SpeexBits *bits, char *bytes, int len);
+
+/** Write the content of a bit-stream to an area of memory
+ * 
+ * @param bits Bit-stream to operate on
+ * @param bytes Memory location where to write the bits
+ * @param max_len Maximum number of bytes to write (i.e. size of the "bytes" buffer)
+ * @return Number of bytes written to the "bytes" buffer
+*/
+int speex_bits_write(SpeexBits *bits, char *bytes, int max_len);
+
+/** Like speex_bits_write, but writes only the complete bytes in the stream. Also removes the written bytes from the stream */
+int speex_bits_write_whole_bytes(SpeexBits *bits, char *bytes, int max_len);
+
+/** Append bits to the bit-stream
+ * @param bits Bit-stream to operate on
+ * @param data Value to append as integer
+ * @param nbBits number of bits to consider in "data"
+ */
+void speex_bits_pack(SpeexBits *bits, int data, int nbBits);
+
+/** Interpret the next bits in the bit-stream as a signed integer
+ *
+ * @param bits Bit-stream to operate on
+ * @param nbBits Number of bits to interpret
+ * @return A signed integer represented by the bits read
+ */
+int speex_bits_unpack_signed(SpeexBits *bits, int nbBits);
+
+/** Interpret the next bits in the bit-stream as an unsigned integer
+ *
+ * @param bits Bit-stream to operate on
+ * @param nbBits Number of bits to interpret
+ * @return An unsigned integer represented by the bits read
+ */
+unsigned int speex_bits_unpack_unsigned(SpeexBits *bits, int nbBits);
+
+/** Returns the number of bytes in the bit-stream, including the last one even if it is not "full"
+ *
+ * @param bits Bit-stream to operate on
+ * @return Number of bytes in the stream
+ */
+int speex_bits_nbytes(SpeexBits *bits);
+
+/** Same as speex_bits_unpack_unsigned, but without modifying the cursor position 
+ * 
+ * @param bits Bit-stream to operate on
+ * @param nbBits Number of bits to look for
+ * @return Value of the bits peeked, interpreted as unsigned
+ */
+unsigned int speex_bits_peek_unsigned(SpeexBits *bits, int nbBits);
+
+/** Get the value of the next bit in the stream, without modifying the
+ * "cursor" position 
+ * 
+ * @param bits Bit-stream to operate on
+ * @return Value of the bit peeked (one bit only)
+ */
+int speex_bits_peek(SpeexBits *bits);
+
+/** Advances the position of the "bit cursor" in the stream 
+ *
+ * @param bits Bit-stream to operate on
+ * @param n Number of bits to advance
+ */
+void speex_bits_advance(SpeexBits *bits, int n);
+
+/** Returns the number of bits remaining to be read in a stream
+ *
+ * @param bits Bit-stream to operate on
+ * @return Number of bits that can still be read from the stream
+ */
+int speex_bits_remaining(SpeexBits *bits);
+
+/** Insert a terminator so that the data can be sent as a packet while auto-detecting 
+ * the number of frames in each packet 
+ *
+ * @param bits Bit-stream to operate on
+ */
+void speex_bits_insert_terminator(SpeexBits *bits);
+
+#ifdef __cplusplus
+}
+#endif
+
+/* @} */
+#endif
diff --git a/code/libspeex/include/speex/speex_buffer.h b/code/libspeex/include/speex/speex_buffer.h
new file mode 100644
index 0000000..df56f5f
--- /dev/null
+++ b/code/libspeex/include/speex/speex_buffer.h
@@ -0,0 +1,68 @@
+/* Copyright (C) 2007 Jean-Marc Valin
+      
+   File: speex_buffer.h
+   This is a very simple ring buffer implementation. It is not thread-safe
+   so you need to do your own locking.
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+
+   1. Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.
+
+   2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+   DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+   ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef SPEEX_BUFFER_H
+#define SPEEX_BUFFER_H
+
+#include "speex/speex_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct SpeexBuffer_;
+typedef struct SpeexBuffer_ SpeexBuffer;
+
+SpeexBuffer *speex_buffer_init(int size);
+
+void speex_buffer_destroy(SpeexBuffer *st);
+
+int speex_buffer_write(SpeexBuffer *st, void *data, int len);
+
+int speex_buffer_writezeros(SpeexBuffer *st, int len);
+
+int speex_buffer_read(SpeexBuffer *st, void *data, int len);
+
+int speex_buffer_get_available(SpeexBuffer *st);
+
+int speex_buffer_resize(SpeexBuffer *st, int len);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+
+
+
diff --git a/code/libspeex/include/speex/speex_callbacks.h b/code/libspeex/include/speex/speex_callbacks.h
new file mode 100644
index 0000000..6f450b3
--- /dev/null
+++ b/code/libspeex/include/speex/speex_callbacks.h
@@ -0,0 +1,134 @@
+/* Copyright (C) 2002 Jean-Marc Valin*/
+/**
+  @file speex_callbacks.h
+  @brief Describes callback handling and in-band signalling
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifndef SPEEX_CALLBACKS_H
+#define SPEEX_CALLBACKS_H
+/** @defgroup SpeexCallbacks Various definitions for Speex callbacks supported by the decoder.
+ *  @{
+ */
+
+#include "speex.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Total number of callbacks */
+#define SPEEX_MAX_CALLBACKS 16
+
+/* Describes all the in-band requests */
+
+/*These are 1-bit requests*/
+/** Request for perceptual enhancement (1 for on, 0 for off) */
+#define SPEEX_INBAND_ENH_REQUEST         0
+/** Reserved */
+#define SPEEX_INBAND_RESERVED1           1
+
+/*These are 4-bit requests*/
+/** Request for a mode change */
+#define SPEEX_INBAND_MODE_REQUEST        2
+/** Request for a low mode change */
+#define SPEEX_INBAND_LOW_MODE_REQUEST    3
+/** Request for a high mode change */
+#define SPEEX_INBAND_HIGH_MODE_REQUEST   4
+/** Request for VBR (1 on, 0 off) */
+#define SPEEX_INBAND_VBR_QUALITY_REQUEST 5
+/** Request to be sent acknowledge */
+#define SPEEX_INBAND_ACKNOWLEDGE_REQUEST 6
+/** Request for VBR (1 for on, 0 for off) */
+#define SPEEX_INBAND_VBR_REQUEST         7
+
+/*These are 8-bit requests*/
+/** Send a character in-band */
+#define SPEEX_INBAND_CHAR                8
+/** Intensity stereo information */
+#define SPEEX_INBAND_STEREO              9
+
+/*These are 16-bit requests*/
+/** Transmit max bit-rate allowed */
+#define SPEEX_INBAND_MAX_BITRATE         10
+
+/*These are 32-bit requests*/
+/** Acknowledge packet reception */
+#define SPEEX_INBAND_ACKNOWLEDGE         12
+
+/** Callback function type */
+typedef int (*speex_callback_func)(SpeexBits *bits, void *state, void *data);
+
+/** Callback information */
+typedef struct SpeexCallback {
+   int callback_id;             /**< ID associated to the callback */
+   speex_callback_func func;    /**< Callback handler function */
+   void *data;                  /**< Data that will be sent to the handler */
+   void *reserved1;             /**< Reserved for future use */
+   int   reserved2;             /**< Reserved for future use */
+} SpeexCallback;
+
+/** Handle in-band request */
+int speex_inband_handler(SpeexBits *bits, SpeexCallback *callback_list, void *state);
+
+/** Standard handler for mode request (change mode, no questions asked) */
+int speex_std_mode_request_handler(SpeexBits *bits, void *state, void *data);
+
+/** Standard handler for high mode request (change high mode, no questions asked) */
+int speex_std_high_mode_request_handler(SpeexBits *bits, void *state, void *data);
+
+/** Standard handler for in-band characters (write to stderr) */
+int speex_std_char_handler(SpeexBits *bits, void *state, void *data);
+
+/** Default handler for user-defined requests: in this case, just ignore */
+int speex_default_user_handler(SpeexBits *bits, void *state, void *data);
+
+
+
+/** Standard handler for low mode request (change low mode, no questions asked) */
+int speex_std_low_mode_request_handler(SpeexBits *bits, void *state, void *data);
+
+/** Standard handler for VBR request (Set VBR, no questions asked) */
+int speex_std_vbr_request_handler(SpeexBits *bits, void *state, void *data);
+
+/** Standard handler for enhancer request (Turn enhancer on/off, no questions asked) */
+int speex_std_enh_request_handler(SpeexBits *bits, void *state, void *data);
+
+/** Standard handler for VBR quality request (Set VBR quality, no questions asked) */
+int speex_std_vbr_quality_request_handler(SpeexBits *bits, void *state, void *data);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+#endif
diff --git a/code/libspeex/include/speex/speex_config_types.h b/code/libspeex/include/speex/speex_config_types.h
new file mode 100644
index 0000000..f386a16
--- /dev/null
+++ b/code/libspeex/include/speex/speex_config_types.h
@@ -0,0 +1,14 @@
+#ifndef __SPEEX_TYPES_H__
+#define __SPEEX_TYPES_H__
+
+#ifdef _MSC_VER
+typedef unsigned __int16 spx_uint16_t;
+typedef unsigned __int32 spx_uint32_t;
+#else
+#include <stdint.h>
+typedef uint16_t spx_uint16_t;
+typedef uint32_t spx_uint32_t;
+#endif
+
+#endif
+
diff --git a/code/libspeex/include/speex/speex_echo.h b/code/libspeex/include/speex/speex_echo.h
new file mode 100644
index 0000000..77a7846
--- /dev/null
+++ b/code/libspeex/include/speex/speex_echo.h
@@ -0,0 +1,123 @@
+/* Copyright (C) Jean-Marc Valin */
+/**
+   @file speex_echo.h
+   @brief Echo cancellation
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+
+   1. Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.
+
+   2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+   DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+   ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef SPEEX_ECHO_H
+#define SPEEX_ECHO_H
+/** @defgroup SpeexEchoState SpeexEchoState: Acoustic echo canceller
+ *  This is the acoustic echo canceller module.
+ *  @{
+ */
+#include "speex/speex_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Obtain frame size used by the AEC */
+#define SPEEX_ECHO_GET_FRAME_SIZE 3
+
+/** Set sampling rate */
+#define SPEEX_ECHO_SET_SAMPLING_RATE 24
+/** Get sampling rate */
+#define SPEEX_ECHO_GET_SAMPLING_RATE 25
+
+/** Internal echo canceller state. Should never be accessed directly. */
+struct SpeexEchoState_;
+
+/** @class SpeexEchoState
+ * This holds the state of the echo canceller. You need one per channel. 
+*/
+
+/** Internal echo canceller state. Should never be accessed directly. */
+typedef struct SpeexEchoState_ SpeexEchoState;
+
+/** Creates a new echo canceller state
+ * @param frame_size Number of samples to process at one time (should correspond to 10-20 ms)
+ * @param filter_length Number of samples of echo to cancel (should generally correspond to 100-500 ms)
+ * @return Newly-created echo canceller state
+ */
+SpeexEchoState *speex_echo_state_init(int frame_size, int filter_length);
+
+/** Destroys an echo canceller state 
+ * @param st Echo canceller state
+*/
+void speex_echo_state_destroy(SpeexEchoState *st);
+
+/** Performs echo cancellation a frame, based on the audio sent to the speaker (no delay is added
+ * to playback in this form)
+ *
+ * @param st Echo canceller state
+ * @param rec Signal from the microphone (near end + far end echo)
+ * @param play Signal played to the speaker (received from far end)
+ * @param out Returns near-end signal with echo removed
+ */
+void speex_echo_cancellation(SpeexEchoState *st, const spx_int16_t *rec, const spx_int16_t *play, spx_int16_t *out);
+
+/** Performs echo cancellation a frame (deprecated) */
+void speex_echo_cancel(SpeexEchoState *st, const spx_int16_t *rec, const spx_int16_t *play, spx_int16_t *out, spx_int32_t *Yout);
+
+/** Perform echo cancellation using internal playback buffer, which is delayed by two frames
+ * to account for the delay introduced by most soundcards (but it could be off!)
+ * @param st Echo canceller state
+ * @param rec Signal from the microphone (near end + far end echo)
+ * @param out Returns near-end signal with echo removed
+*/
+void speex_echo_capture(SpeexEchoState *st, const spx_int16_t *rec, spx_int16_t *out);
+
+/** Let the echo canceller know that a frame was just queued to the soundcard
+ * @param st Echo canceller state
+ * @param play Signal played to the speaker (received from far end)
+*/
+void speex_echo_playback(SpeexEchoState *st, const spx_int16_t *play);
+
+/** Reset the echo canceller to its original state 
+ * @param st Echo canceller state
+ */
+void speex_echo_state_reset(SpeexEchoState *st);
+
+/** Used like the ioctl function to control the echo canceller parameters
+ *
+ * @param st Echo canceller state
+ * @param request ioctl-type request (one of the SPEEX_ECHO_* macros)
+ * @param ptr Data exchanged to-from function
+ * @return 0 if no error, -1 if request in unknown
+ */
+int speex_echo_ctl(SpeexEchoState *st, int request, void *ptr);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+/** @}*/
+#endif
diff --git a/code/libspeex/include/speex/speex_header.h b/code/libspeex/include/speex/speex_header.h
new file mode 100644
index 0000000..f85b249
--- /dev/null
+++ b/code/libspeex/include/speex/speex_header.h
@@ -0,0 +1,94 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file speex_header.h
+   @brief Describes the Speex header
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+
+#ifndef SPEEX_HEADER_H
+#define SPEEX_HEADER_H
+/** @defgroup SpeexHeader SpeexHeader: Makes it easy to write/parse an Ogg/Speex header
+ *  This is the Speex header for the Ogg encapsulation. You don't need that if you just use RTP.
+ *  @{
+ */
+
+#include "speex/speex_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct SpeexMode;
+
+/** Length of the Speex header identifier */
+#define SPEEX_HEADER_STRING_LENGTH 8
+
+/** Maximum number of characters for encoding the Speex version number in the header */
+#define SPEEX_HEADER_VERSION_LENGTH 20
+
+/** Speex header info for file-based formats */
+typedef struct SpeexHeader {
+   char speex_string[SPEEX_HEADER_STRING_LENGTH];   /**< Identifies a Speex bit-stream, always set to "Speex   " */
+   char speex_version[SPEEX_HEADER_VERSION_LENGTH]; /**< Speex version */ 
+   spx_int32_t speex_version_id;       /**< Version for Speex (for checking compatibility) */
+   spx_int32_t header_size;            /**< Total size of the header ( sizeof(SpeexHeader) ) */
+   spx_int32_t rate;                   /**< Sampling rate used */
+   spx_int32_t mode;                   /**< Mode used (0 for narrowband, 1 for wideband) */
+   spx_int32_t mode_bitstream_version; /**< Version ID of the bit-stream */
+   spx_int32_t nb_channels;            /**< Number of channels encoded */
+   spx_int32_t bitrate;                /**< Bit-rate used */
+   spx_int32_t frame_size;             /**< Size of frames */
+   spx_int32_t vbr;                    /**< 1 for a VBR encoding, 0 otherwise */
+   spx_int32_t frames_per_packet;      /**< Number of frames stored per Ogg packet */
+   spx_int32_t extra_headers;          /**< Number of additional headers after the comments */
+   spx_int32_t reserved1;              /**< Reserved for future use, must be zero */
+   spx_int32_t reserved2;              /**< Reserved for future use, must be zero */
+} SpeexHeader;
+
+/** Initializes a SpeexHeader using basic information */
+void speex_init_header(SpeexHeader *header, int rate, int nb_channels, const struct SpeexMode *m);
+
+/** Creates the header packet from the header itself (mostly involves endianness conversion) */
+char *speex_header_to_packet(SpeexHeader *header, int *size);
+
+/** Creates a SpeexHeader from a packet */
+SpeexHeader *speex_packet_to_header(char *packet, int size);
+
+/** Frees the memory allocated by either speex_header_to_packet() or speex_packet_to_header() */
+void speex_header_free(void *ptr);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+#endif
diff --git a/code/libspeex/include/speex/speex_jitter.h b/code/libspeex/include/speex/speex_jitter.h
new file mode 100644
index 0000000..d68674b
--- /dev/null
+++ b/code/libspeex/include/speex/speex_jitter.h
@@ -0,0 +1,197 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file speex_jitter.h
+   @brief Adaptive jitter buffer for Speex
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifndef SPEEX_JITTER_H
+#define SPEEX_JITTER_H
+/** @defgroup JitterBuffer JitterBuffer: Adaptive jitter buffer
+ *  This is the jitter buffer that reorders UDP/RTP packets and adjusts the buffer size
+ * to maintain good quality and low latency.
+ *  @{
+ */
+
+#include "speex/speex_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Generic adaptive jitter buffer state */
+struct JitterBuffer_;
+
+/** Generic adaptive jitter buffer state */
+typedef struct JitterBuffer_ JitterBuffer;
+
+/** Definition of an incoming packet */
+typedef struct _JitterBufferPacket JitterBufferPacket;
+
+/** Definition of an incoming packet */
+struct _JitterBufferPacket {
+   char        *data;       /**< Data bytes contained in the packet */
+   spx_uint32_t len;        /**< Length of the packet in bytes */
+   spx_uint32_t timestamp;  /**< Timestamp for the packet */
+   spx_uint32_t span;       /**< Time covered by the packet (same units as timestamp) */
+   spx_uint16_t sequence;   /**< RTP Sequence number if available (0 otherwise) */
+   spx_uint32_t user_data;  /**< Put whatever data you like here (it's ignored by the jitter buffer) */
+};
+
+/** Packet has been retrieved */
+#define JITTER_BUFFER_OK 0
+/** Packet is lost or is late */
+#define JITTER_BUFFER_MISSING 1
+/** A "fake" packet is meant to be inserted here to increase buffering */
+#define JITTER_BUFFER_INSERTION 2
+/** There was an error in the jitter buffer */
+#define JITTER_BUFFER_INTERNAL_ERROR -1
+/** Invalid argument */
+#define JITTER_BUFFER_BAD_ARGUMENT -2
+
+
+/** Set minimum amount of extra buffering required (margin) */
+#define JITTER_BUFFER_SET_MARGIN 0
+/** Get minimum amount of extra buffering required (margin) */
+#define JITTER_BUFFER_GET_MARGIN 1
+/* JITTER_BUFFER_SET_AVAILABLE_COUNT wouldn't make sense */
+
+/** Get the amount of available packets currently buffered */
+#define JITTER_BUFFER_GET_AVAILABLE_COUNT 3
+/** Included because of an early misspelling (will remove in next release) */
+#define JITTER_BUFFER_GET_AVALIABLE_COUNT 3
+
+/** Assign a function to destroy unused packet. When setting that, the jitter 
+    buffer no longer copies packet data. */
+#define JITTER_BUFFER_SET_DESTROY_CALLBACK 4
+/**  */
+#define JITTER_BUFFER_GET_DESTROY_CALLBACK 5
+
+/** Tell the jitter buffer to only adjust the delay in multiples of the step parameter provided */
+#define JITTER_BUFFER_SET_DELAY_STEP 6
+/**  */
+#define JITTER_BUFFER_GET_DELAY_STEP 7
+
+/** Tell the jitter buffer to only do concealment in multiples of the size parameter provided */
+#define JITTER_BUFFER_SET_CONCEALMENT_SIZE 8
+#define JITTER_BUFFER_GET_CONCEALMENT_SIZE 9
+
+/** Absolute max amount of loss that can be tolerated regardless of the delay. Typical loss 
+    should be half of that or less. */
+#define JITTER_BUFFER_SET_MAX_LATE_RATE 10
+#define JITTER_BUFFER_GET_MAX_LATE_RATE 11
+
+/** Equivalent cost of one percent late packet in timestamp units */
+#define JITTER_BUFFER_SET_LATE_COST 12
+#define JITTER_BUFFER_GET_LATE_COST 13
+
+
+/** Initialises jitter buffer 
+ * 
+ * @param step_size Starting value for the size of concleanment packets and delay 
+       adjustment steps. Can be changed at any time using JITTER_BUFFER_SET_DELAY_STEP
+       and JITTER_BUFFER_GET_CONCEALMENT_SIZE.
+ * @return Newly created jitter buffer state
+ */
+JitterBuffer *jitter_buffer_init(int step_size);
+
+/** Restores jitter buffer to its original state 
+ * 
+ * @param jitter Jitter buffer state
+ */
+void jitter_buffer_reset(JitterBuffer *jitter);
+
+/** Destroys jitter buffer 
+ * 
+ * @param jitter Jitter buffer state
+ */
+void jitter_buffer_destroy(JitterBuffer *jitter);
+
+/** Put one packet into the jitter buffer
+ * 
+ * @param jitter Jitter buffer state
+ * @param packet Incoming packet
+*/
+void jitter_buffer_put(JitterBuffer *jitter, const JitterBufferPacket *packet);
+
+/** Get one packet from the jitter buffer
+ * 
+ * @param jitter Jitter buffer state
+ * @param packet Returned packet
+ * @param desired_span Number of samples (or units) we wish to get from the buffer (no guarantee)
+ * @param current_timestamp Timestamp for the returned packet 
+*/
+int jitter_buffer_get(JitterBuffer *jitter, JitterBufferPacket *packet, spx_int32_t desired_span, spx_int32_t *start_offset);
+
+/** Used right after jitter_buffer_get() to obtain another packet that would have the same timestamp.
+ * This is mainly useful for media where a single "frame" can be split into several packets.
+ * 
+ * @param jitter Jitter buffer state
+ * @param packet Returned packet
+ */
+int jitter_buffer_get_another(JitterBuffer *jitter, JitterBufferPacket *packet);
+
+/** Get pointer timestamp of jitter buffer
+ * 
+ * @param jitter Jitter buffer state
+*/
+int jitter_buffer_get_pointer_timestamp(JitterBuffer *jitter);
+
+/** Advance by one tick
+ * 
+ * @param jitter Jitter buffer state
+*/
+void jitter_buffer_tick(JitterBuffer *jitter);
+
+/** Telling the jitter buffer about the remaining data in the application buffer
+ * @param jitter Jitter buffer state
+ * @param rem Amount of data buffered by the application (timestamp units)
+ */
+void jitter_buffer_remaining_span(JitterBuffer *jitter, spx_uint32_t rem);
+
+/** Used like the ioctl function to control the jitter buffer parameters
+ * 
+ * @param jitter Jitter buffer state
+ * @param request ioctl-type request (one of the JITTER_BUFFER_* macros)
+ * @param ptr Data exchanged to-from function
+ * @return 0 if no error, -1 if request in unknown
+*/
+int jitter_buffer_ctl(JitterBuffer *jitter, int request, void *ptr);
+
+int jitter_buffer_update_delay(JitterBuffer *jitter, JitterBufferPacket *packet, spx_int32_t *start_offset);
+
+/* @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/code/libspeex/include/speex/speex_preprocess.h b/code/libspeex/include/speex/speex_preprocess.h
new file mode 100644
index 0000000..a0d3aa3
--- /dev/null
+++ b/code/libspeex/include/speex/speex_preprocess.h
@@ -0,0 +1,190 @@
+/* Copyright (C) 2003 Epic Games
+   Written by Jean-Marc Valin */
+/**
+ *  @file speex_preprocess.h
+ *  @brief Speex preprocessor. The preprocess can do noise suppression, 
+ * residual echo suppression (after using the echo canceller), automatic
+ * gain control (AGC) and voice activity detection (VAD).
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+
+   1. Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.
+
+   2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+   DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+   ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef SPEEX_PREPROCESS_H
+#define SPEEX_PREPROCESS_H
+/** @defgroup SpeexPreprocessState SpeexPreprocessState: The Speex preprocessor
+ *  This is the Speex preprocessor. The preprocess can do noise suppression, 
+ * residual echo suppression (after using the echo canceller), automatic
+ * gain control (AGC) and voice activity detection (VAD).
+ *  @{
+ */
+
+#include "speex/speex_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+   
+/** State of the preprocessor (one per channel). Should never be accessed directly. */
+struct SpeexPreprocessState_;
+
+/** State of the preprocessor (one per channel). Should never be accessed directly. */
+typedef struct SpeexPreprocessState_ SpeexPreprocessState;
+
+
+/** Creates a new preprocessing state. You MUST create one state per channel processed.
+ * @param frame_size Number of samples to process at one time (should correspond to 10-20 ms). Must be
+ * the same value as that used for the echo canceller for residual echo cancellation to work.
+ * @param sampling_rate Sampling rate used for the input.
+ * @return Newly created preprocessor state
+*/
+SpeexPreprocessState *speex_preprocess_state_init(int frame_size, int sampling_rate);
+
+/** Destroys a preprocessor state 
+ * @param st Preprocessor state to destroy
+*/
+void speex_preprocess_state_destroy(SpeexPreprocessState *st);
+
+/** Preprocess a frame 
+ * @param st Preprocessor state
+ * @param x Audio sample vector (in and out). Must be same size as specified in speex_preprocess_state_init().
+ * @return Bool value for voice activity (1 for speech, 0 for noise/silence), ONLY if VAD turned on.
+*/
+int speex_preprocess_run(SpeexPreprocessState *st, spx_int16_t *x);
+
+/** Preprocess a frame (deprecated, use speex_preprocess_run() instead)*/
+int speex_preprocess(SpeexPreprocessState *st, spx_int16_t *x, spx_int32_t *echo);
+
+/** Update preprocessor state, but do not compute the output
+ * @param st Preprocessor state
+ * @param x Audio sample vector (in only). Must be same size as specified in speex_preprocess_state_init().
+*/
+void speex_preprocess_estimate_update(SpeexPreprocessState *st, spx_int16_t *x);
+
+/** Used like the ioctl function to control the preprocessor parameters 
+ * @param st Preprocessor state
+ * @param request ioctl-type request (one of the SPEEX_PREPROCESS_* macros)
+ * @param ptr Data exchanged to-from function
+ * @return 0 if no error, -1 if request in unknown
+*/
+int speex_preprocess_ctl(SpeexPreprocessState *st, int request, void *ptr);
+
+
+
+/** Set preprocessor denoiser state */
+#define SPEEX_PREPROCESS_SET_DENOISE 0
+/** Get preprocessor denoiser state */
+#define SPEEX_PREPROCESS_GET_DENOISE 1
+
+/** Set preprocessor Automatic Gain Control state */
+#define SPEEX_PREPROCESS_SET_AGC 2
+/** Get preprocessor Automatic Gain Control state */
+#define SPEEX_PREPROCESS_GET_AGC 3
+
+/** Set preprocessor Voice Activity Detection state */
+#define SPEEX_PREPROCESS_SET_VAD 4
+/** Get preprocessor Voice Activity Detection state */
+#define SPEEX_PREPROCESS_GET_VAD 5
+
+/** Set preprocessor Automatic Gain Control level */
+#define SPEEX_PREPROCESS_SET_AGC_LEVEL 6
+/** Get preprocessor Automatic Gain Control level */
+#define SPEEX_PREPROCESS_GET_AGC_LEVEL 7
+
+/** Set preprocessor dereverb state */
+#define SPEEX_PREPROCESS_SET_DEREVERB 8
+/** Get preprocessor dereverb state */
+#define SPEEX_PREPROCESS_GET_DEREVERB 9
+
+/** Set preprocessor dereverb level */
+#define SPEEX_PREPROCESS_SET_DEREVERB_LEVEL 10
+/** Get preprocessor dereverb level */
+#define SPEEX_PREPROCESS_GET_DEREVERB_LEVEL 11
+
+/** Set preprocessor dereverb decay */
+#define SPEEX_PREPROCESS_SET_DEREVERB_DECAY 12
+/** Get preprocessor dereverb decay */
+#define SPEEX_PREPROCESS_GET_DEREVERB_DECAY 13
+
+/** Set probability required for the VAD to go from silence to voice */
+#define SPEEX_PREPROCESS_SET_PROB_START 14
+/** Get probability required for the VAD to go from silence to voice */
+#define SPEEX_PREPROCESS_GET_PROB_START 15
+
+/** Set probability required for the VAD to stay in the voice state (integer percent) */
+#define SPEEX_PREPROCESS_SET_PROB_CONTINUE 16
+/** Get probability required for the VAD to stay in the voice state (integer percent) */
+#define SPEEX_PREPROCESS_GET_PROB_CONTINUE 17
+
+/** Set maximum attenuation of the noise in dB (negative number) */
+#define SPEEX_PREPROCESS_SET_NOISE_SUPPRESS 18
+/** Get maximum attenuation of the noise in dB (negative number) */
+#define SPEEX_PREPROCESS_GET_NOISE_SUPPRESS 19
+
+/** Set maximum attenuation of the residual echo in dB (negative number) */
+#define SPEEX_PREPROCESS_SET_ECHO_SUPPRESS 20
+/** Get maximum attenuation of the residual echo in dB (negative number) */
+#define SPEEX_PREPROCESS_GET_ECHO_SUPPRESS 21
+
+/** Set maximum attenuation of the residual echo in dB when near end is active (negative number) */
+#define SPEEX_PREPROCESS_SET_ECHO_SUPPRESS_ACTIVE 22
+/** Get maximum attenuation of the residual echo in dB when near end is active (negative number) */
+#define SPEEX_PREPROCESS_GET_ECHO_SUPPRESS_ACTIVE 23
+
+/** Set the corresponding echo canceller state so that residual echo suppression can be performed (NULL for no residual echo suppression) */
+#define SPEEX_PREPROCESS_SET_ECHO_STATE 24
+/** Get the corresponding echo canceller state */
+#define SPEEX_PREPROCESS_GET_ECHO_STATE 25
+
+/** Set maximal gain increase in dB/second (int32) */
+#define SPEEX_PREPROCESS_SET_AGC_INCREMENT 26
+
+/** Get maximal gain increase in dB/second (int32) */
+#define SPEEX_PREPROCESS_GET_AGC_INCREMENT 27
+
+/** Set maximal gain decrease in dB/second (int32) */
+#define SPEEX_PREPROCESS_SET_AGC_DECREMENT 28
+
+/** Get maximal gain decrease in dB/second (int32) */
+#define SPEEX_PREPROCESS_GET_AGC_DECREMENT 29
+
+/** Set maximal gain in dB (int32) */
+#define SPEEX_PREPROCESS_SET_AGC_MAX_GAIN 30
+
+/** Get maximal gain in dB (int32) */
+#define SPEEX_PREPROCESS_GET_AGC_MAX_GAIN 31
+
+/*  Can't set loudness */
+/** Get loudness */
+#define SPEEX_PREPROCESS_GET_AGC_LOUDNESS 33
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @}*/
+#endif
diff --git a/code/libspeex/include/speex/speex_resampler.h b/code/libspeex/include/speex/speex_resampler.h
new file mode 100644
index 0000000..54eef8d
--- /dev/null
+++ b/code/libspeex/include/speex/speex_resampler.h
@@ -0,0 +1,340 @@
+/* Copyright (C) 2007 Jean-Marc Valin
+      
+   File: speex_resampler.h
+   Resampling code
+      
+   The design goals of this code are:
+      - Very fast algorithm
+      - Low memory requirement
+      - Good *perceptual* quality (and not best SNR)
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are
+   met:
+
+   1. Redistributions of source code must retain the above copyright notice,
+   this list of conditions and the following disclaimer.
+
+   2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+   DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+   ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#ifndef SPEEX_RESAMPLER_H
+#define SPEEX_RESAMPLER_H
+
+#ifdef OUTSIDE_SPEEX
+
+/********* WARNING: MENTAL SANITY ENDS HERE *************/
+
+/* If the resampler is defined outside of Speex, we change the symbol names so that 
+   there won't be any clash if linking with Speex later on. */
+
+/* #define RANDOM_PREFIX your software name here */
+#ifndef RANDOM_PREFIX
+#error "Please define RANDOM_PREFIX (above) to something specific to your project to prevent symbol name clashes"
+#endif
+
+#define CAT_PREFIX2(a,b) a ## b
+#define CAT_PREFIX(a,b) CAT_PREFIX2(a, b)
+      
+#define speex_resampler_init CAT_PREFIX(RANDOM_PREFIX,_resampler_init)
+#define speex_resampler_init_frac CAT_PREFIX(RANDOM_PREFIX,_resampler_init_frac)
+#define speex_resampler_destroy CAT_PREFIX(RANDOM_PREFIX,_resampler_destroy)
+#define speex_resampler_process_float CAT_PREFIX(RANDOM_PREFIX,_resampler_process_float)
+#define speex_resampler_process_int CAT_PREFIX(RANDOM_PREFIX,_resampler_process_int)
+#define speex_resampler_process_interleaved_float CAT_PREFIX(RANDOM_PREFIX,_resampler_process_interleaved_float)
+#define speex_resampler_process_interleaved_int CAT_PREFIX(RANDOM_PREFIX,_resampler_process_interleaved_int)
+#define speex_resampler_set_rate CAT_PREFIX(RANDOM_PREFIX,_resampler_set_rate)
+#define speex_resampler_get_rate CAT_PREFIX(RANDOM_PREFIX,_resampler_get_rate)
+#define speex_resampler_set_rate_frac CAT_PREFIX(RANDOM_PREFIX,_resampler_set_rate_frac)
+#define speex_resampler_get_ratio CAT_PREFIX(RANDOM_PREFIX,_resampler_get_ratio)
+#define speex_resampler_set_quality CAT_PREFIX(RANDOM_PREFIX,_resampler_set_quality)
+#define speex_resampler_get_quality CAT_PREFIX(RANDOM_PREFIX,_resampler_get_quality)
+#define speex_resampler_set_input_stride CAT_PREFIX(RANDOM_PREFIX,_resampler_set_input_stride)
+#define speex_resampler_get_input_stride CAT_PREFIX(RANDOM_PREFIX,_resampler_get_input_stride)
+#define speex_resampler_set_output_stride CAT_PREFIX(RANDOM_PREFIX,_resampler_set_output_stride)
+#define speex_resampler_get_output_stride CAT_PREFIX(RANDOM_PREFIX,_resampler_get_output_stride)
+#define speex_resampler_get_input_latency CAT_PREFIX(RANDOM_PREFIX,_resampler_get_input_latency)
+#define speex_resampler_get_output_latency CAT_PREFIX(RANDOM_PREFIX,_resampler_get_output_latency)
+#define speex_resampler_skip_zeros CAT_PREFIX(RANDOM_PREFIX,_resampler_skip_zeros)
+#define speex_resampler_reset_mem CAT_PREFIX(RANDOM_PREFIX,_resampler_reset_mem)
+#define speex_resampler_strerror CAT_PREFIX(RANDOM_PREFIX,_resampler_strerror)
+
+#define spx_int16_t short
+#define spx_int32_t int
+#define spx_uint16_t unsigned short
+#define spx_uint32_t unsigned int
+      
+#else /* OUTSIDE_SPEEX */
+
+#include "speex/speex_types.h"
+
+#endif /* OUTSIDE_SPEEX */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define SPEEX_RESAMPLER_QUALITY_MAX 10
+#define SPEEX_RESAMPLER_QUALITY_MIN 0
+#define SPEEX_RESAMPLER_QUALITY_DEFAULT 4
+#define SPEEX_RESAMPLER_QUALITY_VOIP 3
+#define SPEEX_RESAMPLER_QUALITY_DESKTOP 5
+
+enum {
+   RESAMPLER_ERR_SUCCESS         = 0,
+   RESAMPLER_ERR_ALLOC_FAILED    = 1,
+   RESAMPLER_ERR_BAD_STATE       = 2,
+   RESAMPLER_ERR_INVALID_ARG     = 3,
+   RESAMPLER_ERR_PTR_OVERLAP     = 4,
+   
+   RESAMPLER_ERR_MAX_ERROR
+};
+
+struct SpeexResamplerState_;
+typedef struct SpeexResamplerState_ SpeexResamplerState;
+
+/** Create a new resampler with integer input and output rates.
+ * @param nb_channels Number of channels to be processed
+ * @param in_rate Input sampling rate (integer number of Hz).
+ * @param out_rate Output sampling rate (integer number of Hz).
+ * @param quality Resampling quality between 0 and 10, where 0 has poor quality
+ * and 10 has very high quality.
+ * @return Newly created resampler state
+ * @retval NULL Error: not enough memory
+ */
+SpeexResamplerState *speex_resampler_init(spx_uint32_t nb_channels, 
+                                          spx_uint32_t in_rate, 
+                                          spx_uint32_t out_rate, 
+                                          int quality,
+                                          int *err);
+
+/** Create a new resampler with fractional input/output rates. The sampling 
+ * rate ratio is an arbitrary rational number with both the numerator and 
+ * denominator being 32-bit integers.
+ * @param nb_channels Number of channels to be processed
+ * @param ratio_num Numerator of the sampling rate ratio
+ * @param ratio_den Denominator of the sampling rate ratio
+ * @param in_rate Input sampling rate rounded to the nearest integer (in Hz).
+ * @param out_rate Output sampling rate rounded to the nearest integer (in Hz).
+ * @param quality Resampling quality between 0 and 10, where 0 has poor quality
+ * and 10 has very high quality.
+ * @return Newly created resampler state
+ * @retval NULL Error: not enough memory
+ */
+SpeexResamplerState *speex_resampler_init_frac(spx_uint32_t nb_channels, 
+                                               spx_uint32_t ratio_num, 
+                                               spx_uint32_t ratio_den, 
+                                               spx_uint32_t in_rate, 
+                                               spx_uint32_t out_rate, 
+                                               int quality,
+                                               int *err);
+
+/** Destroy a resampler state.
+ * @param st Resampler state
+ */
+void speex_resampler_destroy(SpeexResamplerState *st);
+
+/** Resample a float array. The input and output buffers must *not* overlap.
+ * @param st Resampler state
+ * @param channel_index Index of the channel to process for the multi-channel 
+ * base (0 otherwise)
+ * @param in Input buffer
+ * @param in_len Number of input samples in the input buffer. Returns the 
+ * number of samples processed
+ * @param out Output buffer
+ * @param out_len Size of the output buffer. Returns the number of samples written
+ */
+int speex_resampler_process_float(SpeexResamplerState *st, 
+                                   spx_uint32_t channel_index, 
+                                   const float *in, 
+                                   spx_uint32_t *in_len, 
+                                   float *out, 
+                                   spx_uint32_t *out_len);
+
+/** Resample an int array. The input and output buffers must *not* overlap.
+ * @param st Resampler state
+ * @param channel_index Index of the channel to process for the multi-channel 
+ * base (0 otherwise)
+ * @param in Input buffer
+ * @param in_len Number of input samples in the input buffer. Returns the number
+ * of samples processed
+ * @param out Output buffer
+ * @param out_len Size of the output buffer. Returns the number of samples written
+ */
+int speex_resampler_process_int(SpeexResamplerState *st, 
+                                 spx_uint32_t channel_index, 
+                                 const spx_int16_t *in, 
+                                 spx_uint32_t *in_len, 
+                                 spx_int16_t *out, 
+                                 spx_uint32_t *out_len);
+
+/** Resample an interleaved float array. The input and output buffers must *not* overlap.
+ * @param st Resampler state
+ * @param in Input buffer
+ * @param in_len Number of input samples in the input buffer. Returns the number
+ * of samples processed. This is all per-channel.
+ * @param out Output buffer
+ * @param out_len Size of the output buffer. Returns the number of samples written.
+ * This is all per-channel.
+ */
+int speex_resampler_process_interleaved_float(SpeexResamplerState *st, 
+                                               const float *in, 
+                                               spx_uint32_t *in_len, 
+                                               float *out, 
+                                               spx_uint32_t *out_len);
+
+/** Resample an interleaved int array. The input and output buffers must *not* overlap.
+ * @param st Resampler state
+ * @param in Input buffer
+ * @param in_len Number of input samples in the input buffer. Returns the number
+ * of samples processed. This is all per-channel.
+ * @param out Output buffer
+ * @param out_len Size of the output buffer. Returns the number of samples written.
+ * This is all per-channel.
+ */
+int speex_resampler_process_interleaved_int(SpeexResamplerState *st, 
+                                             const spx_int16_t *in, 
+                                             spx_uint32_t *in_len, 
+                                             spx_int16_t *out, 
+                                             spx_uint32_t *out_len);
+
+/** Set (change) the input/output sampling rates (integer value).
+ * @param st Resampler state
+ * @param in_rate Input sampling rate (integer number of Hz).
+ * @param out_rate Output sampling rate (integer number of Hz).
+ */
+int speex_resampler_set_rate(SpeexResamplerState *st, 
+                              spx_uint32_t in_rate, 
+                              spx_uint32_t out_rate);
+
+/** Get the current input/output sampling rates (integer value).
+ * @param st Resampler state
+ * @param in_rate Input sampling rate (integer number of Hz) copied.
+ * @param out_rate Output sampling rate (integer number of Hz) copied.
+ */
+void speex_resampler_get_rate(SpeexResamplerState *st, 
+                              spx_uint32_t *in_rate, 
+                              spx_uint32_t *out_rate);
+
+/** Set (change) the input/output sampling rates and resampling ratio 
+ * (fractional values in Hz supported).
+ * @param st Resampler state
+ * @param ratio_num Numerator of the sampling rate ratio
+ * @param ratio_den Denominator of the sampling rate ratio
+ * @param in_rate Input sampling rate rounded to the nearest integer (in Hz).
+ * @param out_rate Output sampling rate rounded to the nearest integer (in Hz).
+ */
+int speex_resampler_set_rate_frac(SpeexResamplerState *st, 
+                                   spx_uint32_t ratio_num, 
+                                   spx_uint32_t ratio_den, 
+                                   spx_uint32_t in_rate, 
+                                   spx_uint32_t out_rate);
+
+/** Get the current resampling ratio. This will be reduced to the least
+ * common denominator.
+ * @param st Resampler state
+ * @param ratio_num Numerator of the sampling rate ratio copied
+ * @param ratio_den Denominator of the sampling rate ratio copied
+ */
+void speex_resampler_get_ratio(SpeexResamplerState *st, 
+                               spx_uint32_t *ratio_num, 
+                               spx_uint32_t *ratio_den);
+
+/** Set (change) the conversion quality.
+ * @param st Resampler state
+ * @param quality Resampling quality between 0 and 10, where 0 has poor 
+ * quality and 10 has very high quality.
+ */
+int speex_resampler_set_quality(SpeexResamplerState *st, 
+                                 int quality);
+
+/** Get the conversion quality.
+ * @param st Resampler state
+ * @param quality Resampling quality between 0 and 10, where 0 has poor 
+ * quality and 10 has very high quality.
+ */
+void speex_resampler_get_quality(SpeexResamplerState *st, 
+                                 int *quality);
+
+/** Set (change) the input stride.
+ * @param st Resampler state
+ * @param stride Input stride
+ */
+void speex_resampler_set_input_stride(SpeexResamplerState *st, 
+                                      spx_uint32_t stride);
+
+/** Get the input stride.
+ * @param st Resampler state
+ * @param stride Input stride copied
+ */
+void speex_resampler_get_input_stride(SpeexResamplerState *st, 
+                                      spx_uint32_t *stride);
+
+/** Set (change) the output stride.
+ * @param st Resampler state
+ * @param stride Output stride
+ */
+void speex_resampler_set_output_stride(SpeexResamplerState *st, 
+                                      spx_uint32_t stride);
+
+/** Get the output stride.
+ * @param st Resampler state copied
+ * @param stride Output stride
+ */
+void speex_resampler_get_output_stride(SpeexResamplerState *st, 
+                                      spx_uint32_t *stride);
+
+/** Get the latency in input samples introduced by the resampler.
+ * @param st Resampler state
+ */
+int speex_resampler_get_input_latency(SpeexResamplerState *st);
+
+/** Get the latency in output samples introduced by the resampler.
+ * @param st Resampler state
+ */
+int speex_resampler_get_output_latency(SpeexResamplerState *st);
+
+/** Make sure that the first samples to go out of the resamplers don't have 
+ * leading zeros. This is only useful before starting to use a newly created 
+ * resampler. It is recommended to use that when resampling an audio file, as
+ * it will generate a file with the same length. For real-time processing,
+ * it is probably easier not to use this call (so that the output duration
+ * is the same for the first frame).
+ * @param st Resampler state
+ */
+int speex_resampler_skip_zeros(SpeexResamplerState *st);
+
+/** Reset a resampler so a new (unrelated) stream can be processed.
+ * @param st Resampler state
+ */
+int speex_resampler_reset_mem(SpeexResamplerState *st);
+
+/** Returns the English meaning for an error code
+ * @param err Error code
+ * @return English string
+ */
+const char *speex_resampler_strerror(int err);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/code/libspeex/include/speex/speex_stereo.h b/code/libspeex/include/speex/speex_stereo.h
new file mode 100644
index 0000000..a259713
--- /dev/null
+++ b/code/libspeex/include/speex/speex_stereo.h
@@ -0,0 +1,91 @@
+/* Copyright (C) 2002 Jean-Marc Valin*/
+/**
+   @file speex_stereo.h
+   @brief Describes the handling for intensity stereo
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef STEREO_H
+#define STEREO_H
+/** @defgroup SpeexStereoState SpeexStereoState: Handling Speex stereo files
+ *  This describes the Speex intensity stereo encoding/decoding
+ *  @{
+ */
+
+#include "speex/speex_types.h"
+#include "speex/speex_bits.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** If you access any of these fields directly, I'll personally come and bite you */
+typedef struct SpeexStereoState {
+   float balance;      /**< Left/right balance info */
+   float e_ratio;      /**< Ratio of energies: E(left+right)/[E(left)+E(right)]  */
+   float smooth_left;  /**< Smoothed left channel gain */
+   float smooth_right; /**< Smoothed right channel gain */
+   float reserved1;    /**< Reserved for future use */
+   float reserved2;    /**< Reserved for future use */
+} SpeexStereoState;
+
+/** Deprecated. Use speex_stereo_state_init() instead. */
+#define SPEEX_STEREO_STATE_INIT {1,.5,1,1,0,0}
+
+/** Initialise/create a stereo stereo state */
+SpeexStereoState *speex_stereo_state_init();
+
+/** Reset/re-initialise an already allocated stereo state */
+void speex_stereo_state_reset(SpeexStereoState *stereo);
+
+/** Destroy a stereo stereo state */
+void speex_stereo_state_destroy(SpeexStereoState *stereo);
+
+/** Transforms a stereo frame into a mono frame and stores intensity stereo info in 'bits' */
+void speex_encode_stereo(float *data, int frame_size, SpeexBits *bits);
+
+/** Transforms a stereo frame into a mono frame and stores intensity stereo info in 'bits' */
+void speex_encode_stereo_int(spx_int16_t *data, int frame_size, SpeexBits *bits);
+
+/** Transforms a mono frame into a stereo frame using intensity stereo info */
+void speex_decode_stereo(float *data, int frame_size, SpeexStereoState *stereo);
+
+/** Transforms a mono frame into a stereo frame using intensity stereo info */
+void speex_decode_stereo_int(spx_int16_t *data, int frame_size, SpeexStereoState *stereo);
+
+/** Callback handler for intensity stereo info */
+int speex_std_stereo_request_handler(SpeexBits *bits, void *state, void *data);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+#endif
diff --git a/code/libspeex/include/speex/speex_types.h b/code/libspeex/include/speex/speex_types.h
new file mode 100644
index 0000000..852fed8
--- /dev/null
+++ b/code/libspeex/include/speex/speex_types.h
@@ -0,0 +1,126 @@
+/* speex_types.h taken from libogg */
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
+ *                                                                  *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2002             *
+ * by the Xiph.Org Foundation http://www.xiph.org/                  *
+ *                                                                  *
+ ********************************************************************
+
+ function: #ifdef jail to whip a few platforms into the UNIX ideal.
+ last mod: $Id: os_types.h 7524 2004-08-11 04:20:36Z conrad $
+
+ ********************************************************************/
+/**
+   @file speex_types.h
+   @brief Speex types
+*/
+#ifndef _SPEEX_TYPES_H
+#define _SPEEX_TYPES_H
+
+#if defined(_WIN32) 
+
+#  if defined(__CYGWIN__)
+#    include <_G_config.h>
+     typedef _G_int32_t spx_int32_t;
+     typedef _G_uint32_t spx_uint32_t;
+     typedef _G_int16_t spx_int16_t;
+     typedef _G_uint16_t spx_uint16_t;
+#  elif defined(__MINGW32__)
+     typedef short spx_int16_t;
+     typedef unsigned short spx_uint16_t;
+     typedef int spx_int32_t;
+     typedef unsigned int spx_uint32_t;
+#  elif defined(__MWERKS__)
+     typedef int spx_int32_t;
+     typedef unsigned int spx_uint32_t;
+     typedef short spx_int16_t;
+     typedef unsigned short spx_uint16_t;
+#  else
+     /* MSVC/Borland */
+     typedef __int32 spx_int32_t;
+     typedef unsigned __int32 spx_uint32_t;
+     typedef __int16 spx_int16_t;
+     typedef unsigned __int16 spx_uint16_t;
+#  endif
+
+#elif defined(__MACOS__)
+
+#  include <sys/types.h>
+   typedef SInt16 spx_int16_t;
+   typedef UInt16 spx_uint16_t;
+   typedef SInt32 spx_int32_t;
+   typedef UInt32 spx_uint32_t;
+
+#elif (defined(__APPLE__) && defined(__MACH__)) /* MacOS X Framework build */
+
+#  include <sys/types.h>
+   typedef int16_t spx_int16_t;
+   typedef u_int16_t spx_uint16_t;
+   typedef int32_t spx_int32_t;
+   typedef u_int32_t spx_uint32_t;
+
+#elif defined(__BEOS__)
+
+   /* Be */
+#  include <inttypes.h>
+   typedef int16_t spx_int16_t;
+   typedef u_int16_t spx_uint16_t;
+   typedef int32_t spx_int32_t;
+   typedef u_int32_t spx_uint32_t;
+
+#elif defined (__EMX__)
+
+   /* OS/2 GCC */
+   typedef short spx_int16_t;
+   typedef unsigned short spx_uint16_t;
+   typedef int spx_int32_t;
+   typedef unsigned int spx_uint32_t;
+
+#elif defined (DJGPP)
+
+   /* DJGPP */
+   typedef short spx_int16_t;
+   typedef int spx_int32_t;
+   typedef unsigned int spx_uint32_t;
+
+#elif defined(R5900)
+
+   /* PS2 EE */
+   typedef int spx_int32_t;
+   typedef unsigned spx_uint32_t;
+   typedef short spx_int16_t;
+
+#elif defined(__SYMBIAN32__)
+
+   /* Symbian GCC */
+   typedef signed short spx_int16_t;
+   typedef unsigned short spx_uint16_t;
+   typedef signed int spx_int32_t;
+   typedef unsigned int spx_uint32_t;
+
+#elif defined(CONFIG_TI_C54X) || defined (CONFIG_TI_C55X)
+
+   typedef short spx_int16_t;
+   typedef unsigned short spx_uint16_t;
+   typedef long spx_int32_t;
+   typedef unsigned long spx_uint32_t;
+
+#elif defined(CONFIG_TI_C6X)
+
+   typedef short spx_int16_t;
+   typedef unsigned short spx_uint16_t;
+   typedef int spx_int32_t;
+   typedef unsigned int spx_uint32_t;
+
+#else
+
+#  include <speex/speex_config_types.h>
+
+#endif
+
+#endif  /* _SPEEX_TYPES_H */