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202
lib/xiph/include/ogg/ogg.h Executable file
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/********************************************************************
* *
* 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: toplevel libogg include
last mod: $Id: ogg.h 7188 2004-07-20 07:26:04Z xiphmont $
********************************************************************/
#ifndef _OGG_H
#define _OGG_H
#ifdef __cplusplus
extern "C" {
#endif
#include <ogg/os_types.h>
typedef struct {
long endbyte;
int endbit;
unsigned char *buffer;
unsigned char *ptr;
long storage;
} oggpack_buffer;
/* ogg_page is used to encapsulate the data in one Ogg bitstream page *****/
typedef struct {
unsigned char *header;
long header_len;
unsigned char *body;
long body_len;
} ogg_page;
/* ogg_stream_state contains the current encode/decode state of a logical
Ogg bitstream **********************************************************/
typedef struct {
unsigned char *body_data; /* bytes from packet bodies */
long body_storage; /* storage elements allocated */
long body_fill; /* elements stored; fill mark */
long body_returned; /* elements of fill returned */
int *lacing_vals; /* The values that will go to the segment table */
ogg_int64_t *granule_vals; /* granulepos values for headers. Not compact
this way, but it is simple coupled to the
lacing fifo */
long lacing_storage;
long lacing_fill;
long lacing_packet;
long lacing_returned;
unsigned char header[282]; /* working space for header encode */
int header_fill;
int e_o_s; /* set when we have buffered the last packet in the
logical bitstream */
int b_o_s; /* set after we've written the initial page
of a logical bitstream */
long serialno;
long pageno;
ogg_int64_t packetno; /* sequence number for decode; the framing
knows where there's a hole in the data,
but we need coupling so that the codec
(which is in a seperate abstraction
layer) also knows about the gap */
ogg_int64_t granulepos;
} ogg_stream_state;
/* ogg_packet is used to encapsulate the data and metadata belonging
to a single raw Ogg/Vorbis packet *************************************/
typedef struct {
unsigned char *packet;
long bytes;
long b_o_s;
long e_o_s;
ogg_int64_t granulepos;
ogg_int64_t packetno; /* sequence number for decode; the framing
knows where there's a hole in the data,
but we need coupling so that the codec
(which is in a seperate abstraction
layer) also knows about the gap */
} ogg_packet;
typedef struct {
unsigned char *data;
int storage;
int fill;
int returned;
int unsynced;
int headerbytes;
int bodybytes;
} ogg_sync_state;
/* Ogg BITSTREAM PRIMITIVES: bitstream ************************/
extern void oggpack_writeinit(oggpack_buffer *b);
extern void oggpack_writetrunc(oggpack_buffer *b,long bits);
extern void oggpack_writealign(oggpack_buffer *b);
extern void oggpack_writecopy(oggpack_buffer *b,void *source,long bits);
extern void oggpack_reset(oggpack_buffer *b);
extern void oggpack_writeclear(oggpack_buffer *b);
extern void oggpack_readinit(oggpack_buffer *b,unsigned char *buf,int bytes);
extern void oggpack_write(oggpack_buffer *b,unsigned long value,int bits);
extern long oggpack_look(oggpack_buffer *b,int bits);
extern long oggpack_look1(oggpack_buffer *b);
extern void oggpack_adv(oggpack_buffer *b,int bits);
extern void oggpack_adv1(oggpack_buffer *b);
extern long oggpack_read(oggpack_buffer *b,int bits);
extern long oggpack_read1(oggpack_buffer *b);
extern long oggpack_bytes(oggpack_buffer *b);
extern long oggpack_bits(oggpack_buffer *b);
extern unsigned char *oggpack_get_buffer(oggpack_buffer *b);
extern void oggpackB_writeinit(oggpack_buffer *b);
extern void oggpackB_writetrunc(oggpack_buffer *b,long bits);
extern void oggpackB_writealign(oggpack_buffer *b);
extern void oggpackB_writecopy(oggpack_buffer *b,void *source,long bits);
extern void oggpackB_reset(oggpack_buffer *b);
extern void oggpackB_writeclear(oggpack_buffer *b);
extern void oggpackB_readinit(oggpack_buffer *b,unsigned char *buf,int bytes);
extern void oggpackB_write(oggpack_buffer *b,unsigned long value,int bits);
extern long oggpackB_look(oggpack_buffer *b,int bits);
extern long oggpackB_look1(oggpack_buffer *b);
extern void oggpackB_adv(oggpack_buffer *b,int bits);
extern void oggpackB_adv1(oggpack_buffer *b);
extern long oggpackB_read(oggpack_buffer *b,int bits);
extern long oggpackB_read1(oggpack_buffer *b);
extern long oggpackB_bytes(oggpack_buffer *b);
extern long oggpackB_bits(oggpack_buffer *b);
extern unsigned char *oggpackB_get_buffer(oggpack_buffer *b);
/* Ogg BITSTREAM PRIMITIVES: encoding **************************/
extern int ogg_stream_packetin(ogg_stream_state *os, ogg_packet *op);
extern int ogg_stream_pageout(ogg_stream_state *os, ogg_page *og);
extern int ogg_stream_flush(ogg_stream_state *os, ogg_page *og);
/* Ogg BITSTREAM PRIMITIVES: decoding **************************/
extern int ogg_sync_init(ogg_sync_state *oy);
extern int ogg_sync_clear(ogg_sync_state *oy);
extern int ogg_sync_reset(ogg_sync_state *oy);
extern int ogg_sync_destroy(ogg_sync_state *oy);
extern char *ogg_sync_buffer(ogg_sync_state *oy, long size);
extern int ogg_sync_wrote(ogg_sync_state *oy, long bytes);
extern long ogg_sync_pageseek(ogg_sync_state *oy,ogg_page *og);
extern int ogg_sync_pageout(ogg_sync_state *oy, ogg_page *og);
extern int ogg_stream_pagein(ogg_stream_state *os, ogg_page *og);
extern int ogg_stream_packetout(ogg_stream_state *os,ogg_packet *op);
extern int ogg_stream_packetpeek(ogg_stream_state *os,ogg_packet *op);
/* Ogg BITSTREAM PRIMITIVES: general ***************************/
extern int ogg_stream_init(ogg_stream_state *os,int serialno);
extern int ogg_stream_clear(ogg_stream_state *os);
extern int ogg_stream_reset(ogg_stream_state *os);
extern int ogg_stream_reset_serialno(ogg_stream_state *os,int serialno);
extern int ogg_stream_destroy(ogg_stream_state *os);
extern int ogg_stream_eos(ogg_stream_state *os);
extern void ogg_page_checksum_set(ogg_page *og);
extern int ogg_page_version(ogg_page *og);
extern int ogg_page_continued(ogg_page *og);
extern int ogg_page_bos(ogg_page *og);
extern int ogg_page_eos(ogg_page *og);
extern ogg_int64_t ogg_page_granulepos(ogg_page *og);
extern int ogg_page_serialno(ogg_page *og);
extern long ogg_page_pageno(ogg_page *og);
extern int ogg_page_packets(ogg_page *og);
extern void ogg_packet_clear(ogg_packet *op);
#ifdef __cplusplus
}
#endif
#endif /* _OGG_H */

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lib/xiph/include/ogg/os_types.h Executable file
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/********************************************************************
* *
* 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 $
********************************************************************/
#ifndef _OS_TYPES_H
#define _OS_TYPES_H
/* make it easy on the folks that want to compile the libs with a
different malloc than stdlib */
#define _ogg_malloc malloc
#define _ogg_calloc calloc
#define _ogg_realloc realloc
#define _ogg_free free
#if defined(_WIN32)
# if defined(__CYGWIN__)
# include <_G_config.h>
typedef _G_int64_t ogg_int64_t;
typedef _G_int32_t ogg_int32_t;
typedef _G_uint32_t ogg_uint32_t;
typedef _G_int16_t ogg_int16_t;
typedef _G_uint16_t ogg_uint16_t;
# elif defined(__MINGW32__)
typedef short ogg_int16_t;
typedef unsigned short ogg_uint16_t;
typedef int ogg_int32_t;
typedef unsigned int ogg_uint32_t;
typedef long long ogg_int64_t;
typedef unsigned long long ogg_uint64_t;
# elif defined(__MWERKS__)
typedef long long ogg_int64_t;
typedef int ogg_int32_t;
typedef unsigned int ogg_uint32_t;
typedef short ogg_int16_t;
typedef unsigned short ogg_uint16_t;
# else
/* MSVC/Borland */
typedef __int64 ogg_int64_t;
typedef __int32 ogg_int32_t;
typedef unsigned __int32 ogg_uint32_t;
typedef __int16 ogg_int16_t;
typedef unsigned __int16 ogg_uint16_t;
# endif
#elif defined(__MACOS__)
# include <sys/types.h>
typedef SInt16 ogg_int16_t;
typedef UInt16 ogg_uint16_t;
typedef SInt32 ogg_int32_t;
typedef UInt32 ogg_uint32_t;
typedef SInt64 ogg_int64_t;
#elif defined(__MACOSX__) /* MacOS X Framework build */
# include <sys/types.h>
typedef int16_t ogg_int16_t;
typedef u_int16_t ogg_uint16_t;
typedef int32_t ogg_int32_t;
typedef u_int32_t ogg_uint32_t;
typedef int64_t ogg_int64_t;
#elif defined(__BEOS__)
/* Be */
# include <inttypes.h>
typedef int16_t ogg_int16_t;
typedef u_int16_t ogg_uint16_t;
typedef int32_t ogg_int32_t;
typedef u_int32_t ogg_uint32_t;
typedef int64_t ogg_int64_t;
#elif defined (__EMX__)
/* OS/2 GCC */
typedef short ogg_int16_t;
typedef unsigned short ogg_uint16_t;
typedef int ogg_int32_t;
typedef unsigned int ogg_uint32_t;
typedef long long ogg_int64_t;
#elif defined (DJGPP)
/* DJGPP */
typedef short ogg_int16_t;
typedef int ogg_int32_t;
typedef unsigned int ogg_uint32_t;
typedef long long ogg_int64_t;
#elif defined(R5900)
/* PS2 EE */
typedef long ogg_int64_t;
typedef int ogg_int32_t;
typedef unsigned ogg_uint32_t;
typedef short ogg_int16_t;
#elif defined(__SYMBIAN32__)
/* Symbian GCC */
typedef signed short ogg_int16_t;
typedef unsigned short ogg_uint16_t;
typedef signed int ogg_int32_t;
typedef unsigned int ogg_uint32_t;
typedef long long int ogg_int64_t;
#else
# include <sys/types.h>
# include <ogg/config_types.h>
#endif
#endif /* _OS_TYPES_H */

474
lib/xiph/include/theora/theora.h Executable file
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/********************************************************************
* *
* THIS FILE IS PART OF THE OggTheora 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 Theora SOURCE CODE IS COPYRIGHT (C) 2002-2003 *
* by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************
function:
last mod: $Id: theora.h,v 1.17 2003/12/06 18:06:19 arc Exp $
********************************************************************/
#ifndef _O_THEORA_H_
#define _O_THEORA_H_
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
#ifndef LIBOGG2
#include <ogg/ogg.h>
#else
#include <ogg2/ogg.h>
/* This is temporary until libogg2 is more complete */
ogg_buffer_state *ogg_buffer_create(void);
#endif
/** \mainpage
*
* \section intro Introduction
*
* This is the documentation for the libtheora C API.
* libtheora is the reference implementation for
* <a href="http://www.theora.org/">Theora</a>, a free video codec.
* Theora is derived from On2's VP3 codec with improved integration for
* Ogg multimedia formats by <a href="http://www.xiph.org/">Xiph.Org</a>.
*/
/** \file
* The libtheora C API.
*/
/**
* A YUV buffer for passing uncompressed frames to and from the codec.
* This holds a Y'CbCr frame in planar format. The CbCr planes can be
* subsampled and have their own separate dimensions and row stride
* offsets. Note that the strides may be negative in some
* configurations. For theora the width and height of the largest plane
* must be a multiple of 16. The actual meaningful picture size and
* offset are stored in the theora_info structure; frames returned by
* the decoder may need to be cropped for display.
* All samples are 8 bits.
*/
typedef struct {
int y_width; /**< width of the Y' luminance plane */
int y_height; /**< height of the luminance plane */
int y_stride; /**< offset in bytes between successive rows */
int uv_width; /**< height of the Cb and Cr chroma planes */
int uv_height; /**< width of the chroma planes */
int uv_stride; /**< offset between successive chroma rows */
unsigned char *y; /**< pointer to start of luminance data */
unsigned char *u; /**< pointer to start of Cb data */
unsigned char *v; /**< pointer to start of Cr data */
} yuv_buffer;
/**
* A Colorspace.
*/
typedef enum {
OC_CS_UNSPECIFIED, /**< the colorspace is unknown or unspecified */
OC_CS_ITU_REC_470M, /**< best option for 'NTSC' content */
OC_CS_ITU_REC_470BG, /**< best option for 'PAL' content */
OC_CS_NSPACES /* mark the end of the defined colorspaces */
} theora_colorspace;
/**
* A Chroma subsampling
*
* These enumerate the available chroma subsampling options supported
* by the theora format. See Section 4.4 of the specification for
* exact definitions.
*/
typedef enum {
OC_PF_420, /**< Chroma subsampling by 2 in each direction (4:2:0) */
OC_PF_RSVD, /**< reserved value */
OC_PF_422, /**< Horizonatal chroma subsampling by 2 (4:2:2) */
OC_PF_444, /**< No chroma subsampling at all (4:4:4) */
} theora_pixelformat;
/**
* Theora bitstream info.
* Contains the basic playback parameters for a stream,
* corresponds to the initial 'info' header packet.
*
* Encoded theora frames must be a multiple of 16 is size;
* this is what the width and height members represent. To
* handle other sizes, a crop rectangle is specified in
* frame_height and frame_width, offset_x and offset_y. The
* offset and size should still be a power of 2 to avoid
* chroma sampling shifts.
*
* Frame rate, in frames per second is stored as a rational
* fraction. So is the aspect ratio. Note that this refers
* to the aspect ratio of the frame pixels, not of the
* overall frame itself.
*
* see the example code for use of the other parameters and
* good default settings for the encoder parameters.
*/
typedef struct {
ogg_uint32_t width;
ogg_uint32_t height;
ogg_uint32_t frame_width;
ogg_uint32_t frame_height;
ogg_uint32_t offset_x;
ogg_uint32_t offset_y;
ogg_uint32_t fps_numerator;
ogg_uint32_t fps_denominator;
ogg_uint32_t aspect_numerator;
ogg_uint32_t aspect_denominator;
theora_colorspace colorspace;
int target_bitrate;
int quality; /**< nominal quality setting, 0-63 */
int quick_p; /**< quick encode/decode */
/* decode only */
unsigned char version_major;
unsigned char version_minor;
unsigned char version_subminor;
void *codec_setup;
/* encode only */
int dropframes_p;
int keyframe_auto_p;
ogg_uint32_t keyframe_frequency;
ogg_uint32_t keyframe_frequency_force; /* also used for decode init to
get granpos shift correct */
ogg_uint32_t keyframe_data_target_bitrate;
ogg_int32_t keyframe_auto_threshold;
ogg_uint32_t keyframe_mindistance;
ogg_int32_t noise_sensitivity;
ogg_int32_t sharpness;
theora_pixelformat pixelformat;
} theora_info;
/** Codec internal state and context.
*/
typedef struct{
theora_info *i;
ogg_int64_t granulepos;
void *internal_encode;
void *internal_decode;
} theora_state;
/**
* Comment header metadata.
*
* This structure holds the in-stream metadata corresponding to
* the 'comment' header packet.
*
* Meta data is stored as a series of (tag, value) pairs, in
* length-encoded string vectors. The first occurence of the
* '=' character delimits the tag and value. A particular tag
* may occur more than once. The character set encoding for
* the strings is always utf-8, but the tag names are limited
* to case-insensitive ascii. See the spec for details.
*
* In filling in this structure, theora_decode_header() will
* null-terminate the user_comment strings for safety. However,
* the bitstream format itself treats them as 8-bit clean,
* and so the length array should be treated as authoritative
* for their length.
*/
typedef struct theora_comment{
char **user_comments; /**< an array of comment string vectors */
int *comment_lengths; /**< an array of corresponding string vector lengths in bytes */
int comments; /**< the total number of comment string vectors */
char *vendor; /**< the vendor string identifying the encoder, null terminated */
} theora_comment;
#define OC_FAULT -1 /**< general failure */
#define OC_EINVAL -10 /**< library encountered invalid internal data */
#define OC_DISABLED -11 /**< requested action is disabled */
#define OC_BADHEADER -20 /**< header packet was corrupt/invalid */
#define OC_NOTFORMAT -21 /**< packet is not a theora packet */
#define OC_VERSION -22 /**< bitstream version is not handled */
#define OC_IMPL -23 /**< feature or action not implemented */
#define OC_BADPACKET -24 /**< packet is corrupt */
#define OC_NEWPACKET -25 /**< packet is an (ignorable) unhandled extension */
/**
* Retrieve a human-readable string to identify the encoder vendor and version.
* \returns a version string.
*/
extern const char *theora_version_string(void);
/**
* Retrieve a 32-bit version number.
* This number is composed of a 16-bit major version, 8-bit minor version
* and 8 bit sub-version, composed as follows:
<pre>
(VERSION_MAJOR<<16) + (VERSION_MINOR<<8) + (VERSION_SUB)
</pre>
* \returns the version number.
*/
extern ogg_uint32_t theora_version_number(void);
/**
* Initialize the theora encoder.
* \param th The theora_state handle to initialize for encoding.
* \param ti A theora_info struct filled with the desired encoding parameters.
* \returns 0 Success
*/
extern int theora_encode_init(theora_state *th, theora_info *c);
/**
* Submit a YUV buffer to the theora encoder.
* \param t A theora_state handle previously initialized for encoding.
* \param yuv A buffer of YUV data to encode.
* \retval OC_EINVAL Encoder is not ready, or is finished.
* \retval -1 The size of the given frame differs from those previously input
* \retval 0 Success
*/
extern int theora_encode_YUVin(theora_state *t, yuv_buffer *yuv);
/**
* Request the next packet of encoded video.
* The encoded data is placed in a user-provided ogg_packet structure.
* \param t A theora_state handle previously initialized for encoding.
* \param last_p whether this is the last packet the encoder should produce.
* \param op An ogg_packet structure to fill. libtheora will set all
* elements of this structure, including a pointer to encoded
* data. The memory for the encoded data is owned by libtheora.
* \retval 0 No internal storage exists OR no packet is ready
* \retval -1 The encoding process has completed
* \retval 1 Success
*/
extern int theora_encode_packetout( theora_state *t, int last_p,
ogg_packet *op);
/**
* Request a packet containing the initial header.
* A pointer to the header data is placed in a user-provided ogg_packet
* structure.
* \param t A theora_state handle previously initialized for encoding.
* \param op An ogg_packet structure to fill. libtheora will set all
* elements of this structure, including a pointer to the header
* data. The memory for the header data is owned by libtheora.
* \retval 0 Success
*/
extern int theora_encode_header(theora_state *t, ogg_packet *op);
/**
* Request a comment header packet from provided metadata.
* A pointer to the comment data is placed in a user-provided ogg_packet
* structure.
* \param tc A theora_comment structure filled with the desired metadata
* \param op An ogg_packet structure to fill. libtheora will set all
* elements of this structure, including a pointer to the encoded
* comment data. The memory for the comment data is owned by
* libtheora.
* \retval 0 Success
*/
extern int theora_encode_comment(theora_comment *tc, ogg_packet *op);
/**
* Request a packet containing the codebook tables for the stream.
* A pointer to the codebook data is placed in a user-provided ogg_packet
* structure.
* \param t A theora_state handle previously initialized for encoding.
* \param op An ogg_packet structure to fill. libtheora will set all
* elements of this structure, including a pointer to the codebook
* data. The memory for the header data is owned by libtheora.
* \retval 0 Success
*/
extern int theora_encode_tables(theora_state *t, ogg_packet *op);
/**
* Decode an Ogg packet, with the expectation that the packet contains
* an initial header, comment data or codebook tables.
*
* \param ci A theora_info structure to fill. This must have been previously
* initialized with theora_info_init(). If \a op contains an initial
* header, theora_decode_header() will fill \a ci with the
* parsed header values. If \a op contains codebook tables,
* theora_decode_header() will parse these and attach an internal
* representation to \a ci->codec_setup.
* \param cc A theora_comment structure to fill. If \a op contains comment
* data, theora_decode_header() will fill \a cc with the parsed
* comments.
* \param op An ogg_packet structure which you expect contains an initial
* header, comment data or codebook tables.
*
* \retval OC_BADHEADER \a op is NULL; OR the first byte of \a op->packet
* has the signature of an initial packet, but op is
* not a b_o_s packet; OR this packet has the signature
* of an initial header packet, but an initial header
* packet has already been seen; OR this packet has the
* signature of a comment packet, but the initial header
* has not yet been seen; OR this packet has the signature
* of a comment packet, but contains invalid data; OR
* this packet has the signature of codebook tables,
* but the initial header or comments have not yet
* been seen; OR this packet has the signature of codebook
* tables, but contains invalid data;
* OR the stream being decoded has a compatible version
* but this packet does not have the signature of a
* theora initial header, comments, or codebook packet
* \retval OC_VERSION The packet data of \a op is an initial header with
* a version which is incompatible with this version of
* libtheora.
* \retval OC_NEWPACKET the stream being decoded has an incompatible (future)
* version and contains an unknown signature.
* \retval 0 Success
*
* \note The normal usage is that theora_decode_header() be called on the
* first three packets of a theora logical bitstream in succession.
*/
extern int theora_decode_header(theora_info *ci, theora_comment *cc,
ogg_packet *op);
/**
* Initialize a theora_state handle for decoding.
* \param th The theora_state handle to initialize.
* \param c A theora_info struct filled with the desired decoding parameters.
* This is of course usually obtained from a previous call to
* theora_decode_header().
* \returns 0 Success
*/
extern int theora_decode_init(theora_state *th, theora_info *c);
/**
* Input a packet containing encoded data into the theora decoder.
* \param th A theora_state handle previously initialized for decoding.
* \param op An ogg_packet containing encoded theora data.
* \retval OC_BADPACKET \a op does not contain encoded video data
*/
extern int theora_decode_packetin(theora_state *th,ogg_packet *op);
/**
* Output the next available frame of decoded YUV data.
* \param th A theora_state handle previously initialized for decoding.
* \param yuv A yuv_buffer in which libtheora should place the decoded data.
* \retval 0 Success
*/
extern int theora_decode_YUVout(theora_state *th,yuv_buffer *yuv);
/**
* Report whether a theora packet is a header or not
* This function does no verification beyond checking the header
* flag bit so it should not be used for bitstream identification;
* use theora_decode_header() for that.
*
* \param op An ogg_packet containing encoded theora data.
* \retval 1 The packet is a header packet
* \retval 0 The packet is not a header packet (and so contains frame data)
*
* Thus function was added in the 1.0alpha4 release.
*/
extern int theora_packet_isheader(ogg_packet *op);
/**
* Report whether a theora packet is a keyframe or not
*
* \param op An ogg_packet containing encoded theora data.
* \retval 1 The packet contains a keyframe image
* \retval 0 The packet is contains an interframe delta
* \retval -1 the packet is not an image data packet at all
*
* Thus function was added in the 1.0alpha4 release.
*/
extern int theora_packet_iskeyframe(ogg_packet *op);
/**
* Convert a granulepos to an absolute frame number. The granulepos is
* interpreted in the context of a given theora_state handle.
*
* \param th A previously initialized theora_state handle (encode or decode)
* \param granulepos The granulepos to convert.
* \returns The frame number corresponding to \a granulepos.
* \retval -1 The given granulepos is invalid (ie. negative)
*
* Thus function was added in the 1.0alpha4 release.
*/
extern ogg_int64_t theora_granule_frame(theora_state *th,ogg_int64_t granulepos);
/**
* Convert a granulepos to absolute time in seconds. The granulepos is
* interpreted in the context of a given theora_state handle.
* \param th A previously initialized theora_state handle (encode or decode)
* \param granulepos The granulepos to convert.
* \returns The absolute time in seconds corresponding to \a granulepos.
* \retval -1 The given granulepos is invalid (ie. negative)
*/
extern double theora_granule_time(theora_state *th,ogg_int64_t granulepos);
/**
* Initialize a theora_info structure. All values within the given theora_info
* structure are initialized, and space is allocated within libtheora for
* internal codec setup data.
* \param c A theora_info struct to initialize.
*/
extern void theora_info_init(theora_info *c);
/**
* Clear a theora_info structure. All values within the given theora_info
* structure are cleared, and associated internal codec setup data is freed.
* \param c A theora_info struct to initialize.
*/
extern void theora_info_clear(theora_info *c);
/**
* Free all internal data associated with a theora_state handle.
* \param t A theora_state handle.
*/
extern void theora_clear(theora_state *t);
/** Initialize an allocated theora_comment structure */
extern void theora_comment_init(theora_comment *tc);
/** Add a comment to an initialized theora_comment structure
\param comment must be a null-terminated string encoding
the comment in "TAG=the value" form */
extern void theora_comment_add(theora_comment *tc, char *comment);
/** Add a comment to an initialized theora_comment structure
\param tag a null-terminated string containing the tag
associated with the comment.
\param value the corresponding value as a null-terminated string
Neither theora_comment_add() nor theora_comment_add_tag() support
comments containing null values, although the bitstream format
supports this. To add such comments you will need to manipulate
the theora_comment structure directly */
extern void theora_comment_add_tag(theora_comment *tc,
char *tag, char *value);
/** look up a comment value by tag
\param tc an initialized theora_comment structure
\param tag the tag to look up
\param count the instance of the tag. The same tag can appear
multiple times, each with a distinct and ordered value, so
an index is required to retrieve them all.
Use theora_comment_query_count() to get the legal range for the
count parameter
\returns a pointer to the queried tag's value
\retval NULL if no matching tag is found */
extern char *theora_comment_query(theora_comment *tc, char *tag, int count);
/** look up the number of instances of a tag
\param tc an initialized theora_comment structure
\param tag the tag to look up
\returns the number on instances of a particular tag.
Call this first when querying for a specific tag and then interate
over the number of instances with separate calls to
theora_comment_query() to retrieve all instances in order. */
extern int theora_comment_query_count(theora_comment *tc, char *tag);
/** clears an allocated theora_comment struct so that it can be freed. */
extern void theora_comment_clear(theora_comment *tc);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* _O_THEORA_H_ */

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/********************************************************************
* *
* 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 1994-2001 *
* by the XIPHOPHORUS Company http://www.xiph.org/ *
********************************************************************
function: libvorbis codec headers
last mod: $Id: codec.h 7485 2004-08-05 14:54:23Z thomasvs $
********************************************************************/
#ifndef _vorbis_codec_h_
#define _vorbis_codec_h_
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
#include <ogg/ogg.h>
typedef struct vorbis_info{
int version;
int channels;
long rate;
/* The below bitrate declarations are *hints*.
Combinations of the three values carry the following implications:
all three set to the same value:
implies a fixed rate bitstream
only nominal set:
implies a VBR stream that averages the nominal bitrate. No hard
upper/lower limit
upper and or lower set:
implies a VBR bitstream that obeys the bitrate limits. nominal
may also be set to give a nominal rate.
none set:
the coder does not care to speculate.
*/
long bitrate_upper;
long bitrate_nominal;
long bitrate_lower;
long bitrate_window;
void *codec_setup;
} vorbis_info;
/* vorbis_dsp_state buffers the current vorbis audio
analysis/synthesis state. The DSP state belongs to a specific
logical bitstream ****************************************************/
typedef struct vorbis_dsp_state{
int analysisp;
vorbis_info *vi;
float **pcm;
float **pcmret;
int pcm_storage;
int pcm_current;
int pcm_returned;
int preextrapolate;
int eofflag;
long lW;
long W;
long nW;
long centerW;
ogg_int64_t granulepos;
ogg_int64_t sequence;
ogg_int64_t glue_bits;
ogg_int64_t time_bits;
ogg_int64_t floor_bits;
ogg_int64_t res_bits;
void *backend_state;
} vorbis_dsp_state;
typedef struct vorbis_block{
/* necessary stream state for linking to the framing abstraction */
float **pcm; /* this is a pointer into local storage */
oggpack_buffer opb;
long lW;
long W;
long nW;
int pcmend;
int mode;
int eofflag;
ogg_int64_t granulepos;
ogg_int64_t sequence;
vorbis_dsp_state *vd; /* For read-only access of configuration */
/* local storage to avoid remallocing; it's up to the mapping to
structure it */
void *localstore;
long localtop;
long localalloc;
long totaluse;
struct alloc_chain *reap;
/* bitmetrics for the frame */
long glue_bits;
long time_bits;
long floor_bits;
long res_bits;
void *internal;
} vorbis_block;
/* vorbis_block is a single block of data to be processed as part of
the analysis/synthesis stream; it belongs to a specific logical
bitstream, but is independant from other vorbis_blocks belonging to
that logical bitstream. *************************************************/
struct alloc_chain{
void *ptr;
struct alloc_chain *next;
};
/* vorbis_info contains all the setup information specific to the
specific compression/decompression mode in progress (eg,
psychoacoustic settings, channel setup, options, codebook
etc). vorbis_info and substructures are in backends.h.
*********************************************************************/
/* the comments are not part of vorbis_info so that vorbis_info can be
static storage */
typedef struct vorbis_comment{
/* unlimited user comment fields. libvorbis writes 'libvorbis'
whatever vendor is set to in encode */
char **user_comments;
int *comment_lengths;
int comments;
char *vendor;
} vorbis_comment;
/* libvorbis encodes in two abstraction layers; first we perform DSP
and produce a packet (see docs/analysis.txt). The packet is then
coded into a framed OggSquish bitstream by the second layer (see
docs/framing.txt). Decode is the reverse process; we sync/frame
the bitstream and extract individual packets, then decode the
packet back into PCM audio.
The extra framing/packetizing is used in streaming formats, such as
files. Over the net (such as with UDP), the framing and
packetization aren't necessary as they're provided by the transport
and the streaming layer is not used */
/* Vorbis PRIMITIVES: general ***************************************/
extern void vorbis_info_init(vorbis_info *vi);
extern void vorbis_info_clear(vorbis_info *vi);
extern int vorbis_info_blocksize(vorbis_info *vi,int zo);
extern void vorbis_comment_init(vorbis_comment *vc);
extern void vorbis_comment_add(vorbis_comment *vc, char *comment);
extern void vorbis_comment_add_tag(vorbis_comment *vc,
char *tag, char *contents);
extern char *vorbis_comment_query(vorbis_comment *vc, char *tag, int count);
extern int vorbis_comment_query_count(vorbis_comment *vc, char *tag);
extern void vorbis_comment_clear(vorbis_comment *vc);
extern int vorbis_block_init(vorbis_dsp_state *v, vorbis_block *vb);
extern int vorbis_block_clear(vorbis_block *vb);
extern void vorbis_dsp_clear(vorbis_dsp_state *v);
extern double vorbis_granule_time(vorbis_dsp_state *v,
ogg_int64_t granulepos);
/* Vorbis PRIMITIVES: analysis/DSP layer ****************************/
extern int vorbis_analysis_init(vorbis_dsp_state *v,vorbis_info *vi);
extern int vorbis_commentheader_out(vorbis_comment *vc, ogg_packet *op);
extern int vorbis_analysis_headerout(vorbis_dsp_state *v,
vorbis_comment *vc,
ogg_packet *op,
ogg_packet *op_comm,
ogg_packet *op_code);
extern float **vorbis_analysis_buffer(vorbis_dsp_state *v,int vals);
extern int vorbis_analysis_wrote(vorbis_dsp_state *v,int vals);
extern int vorbis_analysis_blockout(vorbis_dsp_state *v,vorbis_block *vb);
extern int vorbis_analysis(vorbis_block *vb,ogg_packet *op);
extern int vorbis_bitrate_addblock(vorbis_block *vb);
extern int vorbis_bitrate_flushpacket(vorbis_dsp_state *vd,
ogg_packet *op);
/* Vorbis PRIMITIVES: synthesis layer *******************************/
extern int vorbis_synthesis_headerin(vorbis_info *vi,vorbis_comment *vc,
ogg_packet *op);
extern int vorbis_synthesis_init(vorbis_dsp_state *v,vorbis_info *vi);
extern int vorbis_synthesis_restart(vorbis_dsp_state *v);
extern int vorbis_synthesis(vorbis_block *vb,ogg_packet *op);
extern int vorbis_synthesis_trackonly(vorbis_block *vb,ogg_packet *op);
extern int vorbis_synthesis_blockin(vorbis_dsp_state *v,vorbis_block *vb);
extern int vorbis_synthesis_pcmout(vorbis_dsp_state *v,float ***pcm);
extern int vorbis_synthesis_lapout(vorbis_dsp_state *v,float ***pcm);
extern int vorbis_synthesis_read(vorbis_dsp_state *v,int samples);
extern long vorbis_packet_blocksize(vorbis_info *vi,ogg_packet *op);
extern int vorbis_synthesis_halfrate(vorbis_info *v,int flag);
extern int vorbis_synthesis_halfrate_p(vorbis_info *v);
/* Vorbis ERRORS and return codes ***********************************/
#define OV_FALSE -1
#define OV_EOF -2
#define OV_HOLE -3
#define OV_EREAD -128
#define OV_EFAULT -129
#define OV_EIMPL -130
#define OV_EINVAL -131
#define OV_ENOTVORBIS -132
#define OV_EBADHEADER -133
#define OV_EVERSION -134
#define OV_ENOTAUDIO -135
#define OV_EBADPACKET -136
#define OV_EBADLINK -137
#define OV_ENOSEEK -138
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif

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/********************************************************************
* *
* 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 1994-2001 *
* by the XIPHOPHORUS Company http://www.xiph.org/ *
* *
********************************************************************
function: vorbis encode-engine setup
last mod: $Id: vorbisenc.h 7485 2004-08-05 14:54:23Z thomasvs $
********************************************************************/
#ifndef _OV_ENC_H_
#define _OV_ENC_H_
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
#include "codec.h"
extern int vorbis_encode_init(vorbis_info *vi,
long channels,
long rate,
long max_bitrate,
long nominal_bitrate,
long min_bitrate);
extern int vorbis_encode_setup_managed(vorbis_info *vi,
long channels,
long rate,
long max_bitrate,
long nominal_bitrate,
long min_bitrate);
extern int vorbis_encode_setup_vbr(vorbis_info *vi,
long channels,
long rate,
float quality /* quality level from 0. (lo) to 1. (hi) */
);
extern int vorbis_encode_init_vbr(vorbis_info *vi,
long channels,
long rate,
float base_quality /* quality level from 0. (lo) to 1. (hi) */
);
extern int vorbis_encode_setup_init(vorbis_info *vi);
extern int vorbis_encode_ctl(vorbis_info *vi,int number,void *arg);
/* deprecated rate management supported only for compatability */
#define OV_ECTL_RATEMANAGE_GET 0x10
#define OV_ECTL_RATEMANAGE_SET 0x11
#define OV_ECTL_RATEMANAGE_AVG 0x12
#define OV_ECTL_RATEMANAGE_HARD 0x13
struct ovectl_ratemanage_arg {
int management_active;
long bitrate_hard_min;
long bitrate_hard_max;
double bitrate_hard_window;
long bitrate_av_lo;
long bitrate_av_hi;
double bitrate_av_window;
double bitrate_av_window_center;
};
/* new rate setup */
#define OV_ECTL_RATEMANAGE2_GET 0x14
#define OV_ECTL_RATEMANAGE2_SET 0x15
struct ovectl_ratemanage2_arg {
int management_active;
long bitrate_limit_min_kbps;
long bitrate_limit_max_kbps;
long bitrate_limit_reservoir_bits;
double bitrate_limit_reservoir_bias;
long bitrate_average_kbps;
double bitrate_average_damping;
};
#define OV_ECTL_LOWPASS_GET 0x20
#define OV_ECTL_LOWPASS_SET 0x21
#define OV_ECTL_IBLOCK_GET 0x30
#define OV_ECTL_IBLOCK_SET 0x31
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif

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/********************************************************************
* *
* 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 1994-2001 *
* by the XIPHOPHORUS Company http://www.xiph.org/ *
* *
********************************************************************
function: stdio-based convenience library for opening/seeking/decoding
last mod: $Id: vorbisfile.h 7485 2004-08-05 14:54:23Z thomasvs $
********************************************************************/
#ifndef _OV_FILE_H_
#define _OV_FILE_H_
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
#include <stdio.h>
#include "codec.h"
/* The function prototypes for the callbacks are basically the same as for
* the stdio functions fread, fseek, fclose, ftell.
* The one difference is that the FILE * arguments have been replaced with
* a void * - this is to be used as a pointer to whatever internal data these
* functions might need. In the stdio case, it's just a FILE * cast to a void *
*
* If you use other functions, check the docs for these functions and return
* the right values. For seek_func(), you *MUST* return -1 if the stream is
* unseekable
*/
typedef struct {
size_t (*read_func) (void *ptr, size_t size, size_t nmemb, void *datasource);
int (*seek_func) (void *datasource, ogg_int64_t offset, int whence);
int (*close_func) (void *datasource);
long (*tell_func) (void *datasource);
} ov_callbacks;
#define NOTOPEN 0
#define PARTOPEN 1
#define OPENED 2
#define STREAMSET 3
#define INITSET 4
typedef struct OggVorbis_File {
void *datasource; /* Pointer to a FILE *, etc. */
int seekable;
ogg_int64_t offset;
ogg_int64_t end;
ogg_sync_state oy;
/* If the FILE handle isn't seekable (eg, a pipe), only the current
stream appears */
int links;
ogg_int64_t *offsets;
ogg_int64_t *dataoffsets;
long *serialnos;
ogg_int64_t *pcmlengths; /* overloaded to maintain binary
compatability; x2 size, stores both
beginning and end values */
vorbis_info *vi;
vorbis_comment *vc;
/* Decoding working state local storage */
ogg_int64_t pcm_offset;
int ready_state;
long current_serialno;
int current_link;
double bittrack;
double samptrack;
ogg_stream_state os; /* take physical pages, weld into a logical
stream of packets */
vorbis_dsp_state vd; /* central working state for the packet->PCM decoder */
vorbis_block vb; /* local working space for packet->PCM decode */
ov_callbacks callbacks;
} OggVorbis_File;
extern int ov_clear(OggVorbis_File *vf);
extern int ov_open(FILE *f,OggVorbis_File *vf,char *initial,long ibytes);
extern int ov_open_callbacks(void *datasource, OggVorbis_File *vf,
char *initial, long ibytes, ov_callbacks callbacks);
extern int ov_test(FILE *f,OggVorbis_File *vf,char *initial,long ibytes);
extern int ov_test_callbacks(void *datasource, OggVorbis_File *vf,
char *initial, long ibytes, ov_callbacks callbacks);
extern int ov_test_open(OggVorbis_File *vf);
extern long ov_bitrate(OggVorbis_File *vf,int i);
extern long ov_bitrate_instant(OggVorbis_File *vf);
extern long ov_streams(OggVorbis_File *vf);
extern long ov_seekable(OggVorbis_File *vf);
extern long ov_serialnumber(OggVorbis_File *vf,int i);
extern ogg_int64_t ov_raw_total(OggVorbis_File *vf,int i);
extern ogg_int64_t ov_pcm_total(OggVorbis_File *vf,int i);
extern double ov_time_total(OggVorbis_File *vf,int i);
extern int ov_raw_seek(OggVorbis_File *vf,ogg_int64_t pos);
extern int ov_pcm_seek(OggVorbis_File *vf,ogg_int64_t pos);
extern int ov_pcm_seek_page(OggVorbis_File *vf,ogg_int64_t pos);
extern int ov_time_seek(OggVorbis_File *vf,double pos);
extern int ov_time_seek_page(OggVorbis_File *vf,double pos);
extern int ov_raw_seek_lap(OggVorbis_File *vf,ogg_int64_t pos);
extern int ov_pcm_seek_lap(OggVorbis_File *vf,ogg_int64_t pos);
extern int ov_pcm_seek_page_lap(OggVorbis_File *vf,ogg_int64_t pos);
extern int ov_time_seek_lap(OggVorbis_File *vf,double pos);
extern int ov_time_seek_page_lap(OggVorbis_File *vf,double pos);
extern ogg_int64_t ov_raw_tell(OggVorbis_File *vf);
extern ogg_int64_t ov_pcm_tell(OggVorbis_File *vf);
extern double ov_time_tell(OggVorbis_File *vf);
extern vorbis_info *ov_info(OggVorbis_File *vf,int link);
extern vorbis_comment *ov_comment(OggVorbis_File *vf,int link);
extern long ov_read_float(OggVorbis_File *vf,float ***pcm_channels,int samples,
int *bitstream);
extern long ov_read(OggVorbis_File *vf,char *buffer,int length,
int bigendianp,int word,int sgned,int *bitstream);
extern int ov_crosslap(OggVorbis_File *vf1,OggVorbis_File *vf2);
extern int ov_halfrate(OggVorbis_File *vf,int flag);
extern int ov_halfrate_p(OggVorbis_File *vf);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif

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/********************************************************************
* *
* 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: toplevel libogg include
last mod: $Id: ogg.h 7188 2004-07-20 07:26:04Z xiphmont $
********************************************************************/
#ifndef _OGG_H
#define _OGG_H
#ifdef __cplusplus
extern "C" {
#endif
#include <ogg/os_types.h>
typedef struct {
long endbyte;
int endbit;
unsigned char *buffer;
unsigned char *ptr;
long storage;
} oggpack_buffer;
/* ogg_page is used to encapsulate the data in one Ogg bitstream page *****/
typedef struct {
unsigned char *header;
long header_len;
unsigned char *body;
long body_len;
} ogg_page;
/* ogg_stream_state contains the current encode/decode state of a logical
Ogg bitstream **********************************************************/
typedef struct {
unsigned char *body_data; /* bytes from packet bodies */
long body_storage; /* storage elements allocated */
long body_fill; /* elements stored; fill mark */
long body_returned; /* elements of fill returned */
int *lacing_vals; /* The values that will go to the segment table */
ogg_int64_t *granule_vals; /* granulepos values for headers. Not compact
this way, but it is simple coupled to the
lacing fifo */
long lacing_storage;
long lacing_fill;
long lacing_packet;
long lacing_returned;
unsigned char header[282]; /* working space for header encode */
int header_fill;
int e_o_s; /* set when we have buffered the last packet in the
logical bitstream */
int b_o_s; /* set after we've written the initial page
of a logical bitstream */
long serialno;
long pageno;
ogg_int64_t packetno; /* sequence number for decode; the framing
knows where there's a hole in the data,
but we need coupling so that the codec
(which is in a seperate abstraction
layer) also knows about the gap */
ogg_int64_t granulepos;
} ogg_stream_state;
/* ogg_packet is used to encapsulate the data and metadata belonging
to a single raw Ogg/Vorbis packet *************************************/
typedef struct {
unsigned char *packet;
long bytes;
long b_o_s;
long e_o_s;
ogg_int64_t granulepos;
ogg_int64_t packetno; /* sequence number for decode; the framing
knows where there's a hole in the data,
but we need coupling so that the codec
(which is in a seperate abstraction
layer) also knows about the gap */
} ogg_packet;
typedef struct {
unsigned char *data;
int storage;
int fill;
int returned;
int unsynced;
int headerbytes;
int bodybytes;
} ogg_sync_state;
/* Ogg BITSTREAM PRIMITIVES: bitstream ************************/
extern void oggpack_writeinit(oggpack_buffer *b);
extern void oggpack_writetrunc(oggpack_buffer *b,long bits);
extern void oggpack_writealign(oggpack_buffer *b);
extern void oggpack_writecopy(oggpack_buffer *b,void *source,long bits);
extern void oggpack_reset(oggpack_buffer *b);
extern void oggpack_writeclear(oggpack_buffer *b);
extern void oggpack_readinit(oggpack_buffer *b,unsigned char *buf,int bytes);
extern void oggpack_write(oggpack_buffer *b,unsigned long value,int bits);
extern long oggpack_look(oggpack_buffer *b,int bits);
extern long oggpack_look1(oggpack_buffer *b);
extern void oggpack_adv(oggpack_buffer *b,int bits);
extern void oggpack_adv1(oggpack_buffer *b);
extern long oggpack_read(oggpack_buffer *b,int bits);
extern long oggpack_read1(oggpack_buffer *b);
extern long oggpack_bytes(oggpack_buffer *b);
extern long oggpack_bits(oggpack_buffer *b);
extern unsigned char *oggpack_get_buffer(oggpack_buffer *b);
extern void oggpackB_writeinit(oggpack_buffer *b);
extern void oggpackB_writetrunc(oggpack_buffer *b,long bits);
extern void oggpackB_writealign(oggpack_buffer *b);
extern void oggpackB_writecopy(oggpack_buffer *b,void *source,long bits);
extern void oggpackB_reset(oggpack_buffer *b);
extern void oggpackB_writeclear(oggpack_buffer *b);
extern void oggpackB_readinit(oggpack_buffer *b,unsigned char *buf,int bytes);
extern void oggpackB_write(oggpack_buffer *b,unsigned long value,int bits);
extern long oggpackB_look(oggpack_buffer *b,int bits);
extern long oggpackB_look1(oggpack_buffer *b);
extern void oggpackB_adv(oggpack_buffer *b,int bits);
extern void oggpackB_adv1(oggpack_buffer *b);
extern long oggpackB_read(oggpack_buffer *b,int bits);
extern long oggpackB_read1(oggpack_buffer *b);
extern long oggpackB_bytes(oggpack_buffer *b);
extern long oggpackB_bits(oggpack_buffer *b);
extern unsigned char *oggpackB_get_buffer(oggpack_buffer *b);
/* Ogg BITSTREAM PRIMITIVES: encoding **************************/
extern int ogg_stream_packetin(ogg_stream_state *os, ogg_packet *op);
extern int ogg_stream_pageout(ogg_stream_state *os, ogg_page *og);
extern int ogg_stream_flush(ogg_stream_state *os, ogg_page *og);
/* Ogg BITSTREAM PRIMITIVES: decoding **************************/
extern int ogg_sync_init(ogg_sync_state *oy);
extern int ogg_sync_clear(ogg_sync_state *oy);
extern int ogg_sync_reset(ogg_sync_state *oy);
extern int ogg_sync_destroy(ogg_sync_state *oy);
extern char *ogg_sync_buffer(ogg_sync_state *oy, long size);
extern int ogg_sync_wrote(ogg_sync_state *oy, long bytes);
extern long ogg_sync_pageseek(ogg_sync_state *oy,ogg_page *og);
extern int ogg_sync_pageout(ogg_sync_state *oy, ogg_page *og);
extern int ogg_stream_pagein(ogg_stream_state *os, ogg_page *og);
extern int ogg_stream_packetout(ogg_stream_state *os,ogg_packet *op);
extern int ogg_stream_packetpeek(ogg_stream_state *os,ogg_packet *op);
/* Ogg BITSTREAM PRIMITIVES: general ***************************/
extern int ogg_stream_init(ogg_stream_state *os,int serialno);
extern int ogg_stream_clear(ogg_stream_state *os);
extern int ogg_stream_reset(ogg_stream_state *os);
extern int ogg_stream_reset_serialno(ogg_stream_state *os,int serialno);
extern int ogg_stream_destroy(ogg_stream_state *os);
extern int ogg_stream_eos(ogg_stream_state *os);
extern void ogg_page_checksum_set(ogg_page *og);
extern int ogg_page_version(ogg_page *og);
extern int ogg_page_continued(ogg_page *og);
extern int ogg_page_bos(ogg_page *og);
extern int ogg_page_eos(ogg_page *og);
extern ogg_int64_t ogg_page_granulepos(ogg_page *og);
extern int ogg_page_serialno(ogg_page *og);
extern long ogg_page_pageno(ogg_page *og);
extern int ogg_page_packets(ogg_page *og);
extern void ogg_packet_clear(ogg_packet *op);
#ifdef __cplusplus
}
#endif
#endif /* _OGG_H */

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/********************************************************************
* *
* 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 $
********************************************************************/
#ifndef _OS_TYPES_H
#define _OS_TYPES_H
/* make it easy on the folks that want to compile the libs with a
different malloc than stdlib */
#define _ogg_malloc malloc
#define _ogg_calloc calloc
#define _ogg_realloc realloc
#define _ogg_free free
#if defined(_WIN32)
# if defined(__CYGWIN__)
# include <_G_config.h>
typedef _G_int64_t ogg_int64_t;
typedef _G_int32_t ogg_int32_t;
typedef _G_uint32_t ogg_uint32_t;
typedef _G_int16_t ogg_int16_t;
typedef _G_uint16_t ogg_uint16_t;
# elif defined(__MINGW32__)
typedef short ogg_int16_t;
typedef unsigned short ogg_uint16_t;
typedef int ogg_int32_t;
typedef unsigned int ogg_uint32_t;
typedef long long ogg_int64_t;
typedef unsigned long long ogg_uint64_t;
# elif defined(__MWERKS__)
typedef long long ogg_int64_t;
typedef int ogg_int32_t;
typedef unsigned int ogg_uint32_t;
typedef short ogg_int16_t;
typedef unsigned short ogg_uint16_t;
# else
/* MSVC/Borland */
typedef __int64 ogg_int64_t;
typedef __int32 ogg_int32_t;
typedef unsigned __int32 ogg_uint32_t;
typedef __int16 ogg_int16_t;
typedef unsigned __int16 ogg_uint16_t;
# endif
#elif defined(__MACOS__)
# include <sys/types.h>
typedef SInt16 ogg_int16_t;
typedef UInt16 ogg_uint16_t;
typedef SInt32 ogg_int32_t;
typedef UInt32 ogg_uint32_t;
typedef SInt64 ogg_int64_t;
#elif defined(__MACOSX__) /* MacOS X Framework build */
# include <sys/types.h>
typedef int16_t ogg_int16_t;
typedef u_int16_t ogg_uint16_t;
typedef int32_t ogg_int32_t;
typedef u_int32_t ogg_uint32_t;
typedef int64_t ogg_int64_t;
#elif defined(__BEOS__)
/* Be */
# include <inttypes.h>
typedef int16_t ogg_int16_t;
typedef u_int16_t ogg_uint16_t;
typedef int32_t ogg_int32_t;
typedef u_int32_t ogg_uint32_t;
typedef int64_t ogg_int64_t;
#elif defined (__EMX__)
/* OS/2 GCC */
typedef short ogg_int16_t;
typedef unsigned short ogg_uint16_t;
typedef int ogg_int32_t;
typedef unsigned int ogg_uint32_t;
typedef long long ogg_int64_t;
#elif defined (DJGPP)
/* DJGPP */
typedef short ogg_int16_t;
typedef int ogg_int32_t;
typedef unsigned int ogg_uint32_t;
typedef long long ogg_int64_t;
#elif defined(R5900)
/* PS2 EE */
typedef long ogg_int64_t;
typedef int ogg_int32_t;
typedef unsigned ogg_uint32_t;
typedef short ogg_int16_t;
#elif defined(__SYMBIAN32__)
/* Symbian GCC */
typedef signed short ogg_int16_t;
typedef unsigned short ogg_uint16_t;
typedef signed int ogg_int32_t;
typedef unsigned int ogg_uint32_t;
typedef long long int ogg_int64_t;
#else
# include <sys/types.h>
# include <ogg/config_types.h>
#endif
#endif /* _OS_TYPES_H */

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>English</string>
<key>CFBundleExecutable</key>
<string>Ogg</string>
<key>CFBundleGetInfoString</key>
<string>Enables the manipulation of Ogg bitstreams</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>Ogg framework</string>
<key>CFBundlePackageType</key>
<string>FMWK</string>
<key>CFBundleShortVersionString</key>
<string>1.11</string>
<key>CFBundleSignature</key>
<string>Ogg_</string>
<key>CFBundleVersion</key>
<string>1.11</string>
</dict>
</plist>

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/********************************************************************
* *
* THIS FILE IS PART OF THE OggTheora 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 Theora SOURCE CODE IS COPYRIGHT (C) 2002-2003 *
* by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************
function:
last mod: $Id: theora.h,v 1.17 2003/12/06 18:06:19 arc Exp $
********************************************************************/
#ifndef _O_THEORA_H_
#define _O_THEORA_H_
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
#ifndef LIBOGG2
#include <ogg/ogg.h>
#else
#include <ogg2/ogg.h>
/* This is temporary until libogg2 is more complete */
ogg_buffer_state *ogg_buffer_create(void);
#endif
/** \mainpage
*
* \section intro Introduction
*
* This is the documentation for the libtheora C API.
* libtheora is the reference implementation for
* <a href="http://www.theora.org/">Theora</a>, a free video codec.
* Theora is derived from On2's VP3 codec with improved integration for
* Ogg multimedia formats by <a href="http://www.xiph.org/">Xiph.Org</a>.
*/
/** \file
* The libtheora C API.
*/
/**
* A YUV buffer for passing uncompressed frames to and from the codec.
* This holds a Y'CbCr frame in planar format. The CbCr planes can be
* subsampled and have their own separate dimensions and row stride
* offsets. Note that the strides may be negative in some
* configurations. For theora the width and height of the largest plane
* must be a multiple of 16. The actual meaningful picture size and
* offset are stored in the theora_info structure; frames returned by
* the decoder may need to be cropped for display.
* All samples are 8 bits.
*/
typedef struct {
int y_width; /**< width of the Y' luminance plane */
int y_height; /**< height of the luminance plane */
int y_stride; /**< offset in bytes between successive rows */
int uv_width; /**< height of the Cb and Cr chroma planes */
int uv_height; /**< width of the chroma planes */
int uv_stride; /**< offset between successive chroma rows */
unsigned char *y; /**< pointer to start of luminance data */
unsigned char *u; /**< pointer to start of Cb data */
unsigned char *v; /**< pointer to start of Cr data */
} yuv_buffer;
/**
* A Colorspace.
*/
typedef enum {
OC_CS_UNSPECIFIED, /**< the colorspace is unknown or unspecified */
OC_CS_ITU_REC_470M, /**< best option for 'NTSC' content */
OC_CS_ITU_REC_470BG, /**< best option for 'PAL' content */
OC_CS_NSPACES /* mark the end of the defined colorspaces */
} theora_colorspace;
/**
* A Chroma subsampling
*
* These enumerate the available chroma subsampling options supported
* by the theora format. See Section 4.4 of the specification for
* exact definitions.
*/
typedef enum {
OC_PF_420, /**< Chroma subsampling by 2 in each direction (4:2:0) */
OC_PF_RSVD, /**< reserved value */
OC_PF_422, /**< Horizonatal chroma subsampling by 2 (4:2:2) */
OC_PF_444, /**< No chroma subsampling at all (4:4:4) */
} theora_pixelformat;
/**
* Theora bitstream info.
* Contains the basic playback parameters for a stream,
* corresponds to the initial 'info' header packet.
*
* Encoded theora frames must be a multiple of 16 is size;
* this is what the width and height members represent. To
* handle other sizes, a crop rectangle is specified in
* frame_height and frame_width, offset_x and offset_y. The
* offset and size should still be a power of 2 to avoid
* chroma sampling shifts.
*
* Frame rate, in frames per second is stored as a rational
* fraction. So is the aspect ratio. Note that this refers
* to the aspect ratio of the frame pixels, not of the
* overall frame itself.
*
* see the example code for use of the other parameters and
* good default settings for the encoder parameters.
*/
typedef struct {
ogg_uint32_t width;
ogg_uint32_t height;
ogg_uint32_t frame_width;
ogg_uint32_t frame_height;
ogg_uint32_t offset_x;
ogg_uint32_t offset_y;
ogg_uint32_t fps_numerator;
ogg_uint32_t fps_denominator;
ogg_uint32_t aspect_numerator;
ogg_uint32_t aspect_denominator;
theora_colorspace colorspace;
int target_bitrate;
int quality; /**< nominal quality setting, 0-63 */
int quick_p; /**< quick encode/decode */
/* decode only */
unsigned char version_major;
unsigned char version_minor;
unsigned char version_subminor;
void *codec_setup;
/* encode only */
int dropframes_p;
int keyframe_auto_p;
ogg_uint32_t keyframe_frequency;
ogg_uint32_t keyframe_frequency_force; /* also used for decode init to
get granpos shift correct */
ogg_uint32_t keyframe_data_target_bitrate;
ogg_int32_t keyframe_auto_threshold;
ogg_uint32_t keyframe_mindistance;
ogg_int32_t noise_sensitivity;
ogg_int32_t sharpness;
theora_pixelformat pixelformat;
} theora_info;
/** Codec internal state and context.
*/
typedef struct{
theora_info *i;
ogg_int64_t granulepos;
void *internal_encode;
void *internal_decode;
} theora_state;
/**
* Comment header metadata.
*
* This structure holds the in-stream metadata corresponding to
* the 'comment' header packet.
*
* Meta data is stored as a series of (tag, value) pairs, in
* length-encoded string vectors. The first occurence of the
* '=' character delimits the tag and value. A particular tag
* may occur more than once. The character set encoding for
* the strings is always utf-8, but the tag names are limited
* to case-insensitive ascii. See the spec for details.
*
* In filling in this structure, theora_decode_header() will
* null-terminate the user_comment strings for safety. However,
* the bitstream format itself treats them as 8-bit clean,
* and so the length array should be treated as authoritative
* for their length.
*/
typedef struct theora_comment{
char **user_comments; /**< an array of comment string vectors */
int *comment_lengths; /**< an array of corresponding string vector lengths in bytes */
int comments; /**< the total number of comment string vectors */
char *vendor; /**< the vendor string identifying the encoder, null terminated */
} theora_comment;
#define OC_FAULT -1 /**< general failure */
#define OC_EINVAL -10 /**< library encountered invalid internal data */
#define OC_DISABLED -11 /**< requested action is disabled */
#define OC_BADHEADER -20 /**< header packet was corrupt/invalid */
#define OC_NOTFORMAT -21 /**< packet is not a theora packet */
#define OC_VERSION -22 /**< bitstream version is not handled */
#define OC_IMPL -23 /**< feature or action not implemented */
#define OC_BADPACKET -24 /**< packet is corrupt */
#define OC_NEWPACKET -25 /**< packet is an (ignorable) unhandled extension */
/**
* Retrieve a human-readable string to identify the encoder vendor and version.
* \returns a version string.
*/
extern const char *theora_version_string(void);
/**
* Retrieve a 32-bit version number.
* This number is composed of a 16-bit major version, 8-bit minor version
* and 8 bit sub-version, composed as follows:
<pre>
(VERSION_MAJOR<<16) + (VERSION_MINOR<<8) + (VERSION_SUB)
</pre>
* \returns the version number.
*/
extern ogg_uint32_t theora_version_number(void);
/**
* Initialize the theora encoder.
* \param th The theora_state handle to initialize for encoding.
* \param ti A theora_info struct filled with the desired encoding parameters.
* \returns 0 Success
*/
extern int theora_encode_init(theora_state *th, theora_info *c);
/**
* Submit a YUV buffer to the theora encoder.
* \param t A theora_state handle previously initialized for encoding.
* \param yuv A buffer of YUV data to encode.
* \retval OC_EINVAL Encoder is not ready, or is finished.
* \retval -1 The size of the given frame differs from those previously input
* \retval 0 Success
*/
extern int theora_encode_YUVin(theora_state *t, yuv_buffer *yuv);
/**
* Request the next packet of encoded video.
* The encoded data is placed in a user-provided ogg_packet structure.
* \param t A theora_state handle previously initialized for encoding.
* \param last_p whether this is the last packet the encoder should produce.
* \param op An ogg_packet structure to fill. libtheora will set all
* elements of this structure, including a pointer to encoded
* data. The memory for the encoded data is owned by libtheora.
* \retval 0 No internal storage exists OR no packet is ready
* \retval -1 The encoding process has completed
* \retval 1 Success
*/
extern int theora_encode_packetout( theora_state *t, int last_p,
ogg_packet *op);
/**
* Request a packet containing the initial header.
* A pointer to the header data is placed in a user-provided ogg_packet
* structure.
* \param t A theora_state handle previously initialized for encoding.
* \param op An ogg_packet structure to fill. libtheora will set all
* elements of this structure, including a pointer to the header
* data. The memory for the header data is owned by libtheora.
* \retval 0 Success
*/
extern int theora_encode_header(theora_state *t, ogg_packet *op);
/**
* Request a comment header packet from provided metadata.
* A pointer to the comment data is placed in a user-provided ogg_packet
* structure.
* \param tc A theora_comment structure filled with the desired metadata
* \param op An ogg_packet structure to fill. libtheora will set all
* elements of this structure, including a pointer to the encoded
* comment data. The memory for the comment data is owned by
* libtheora.
* \retval 0 Success
*/
extern int theora_encode_comment(theora_comment *tc, ogg_packet *op);
/**
* Request a packet containing the codebook tables for the stream.
* A pointer to the codebook data is placed in a user-provided ogg_packet
* structure.
* \param t A theora_state handle previously initialized for encoding.
* \param op An ogg_packet structure to fill. libtheora will set all
* elements of this structure, including a pointer to the codebook
* data. The memory for the header data is owned by libtheora.
* \retval 0 Success
*/
extern int theora_encode_tables(theora_state *t, ogg_packet *op);
/**
* Decode an Ogg packet, with the expectation that the packet contains
* an initial header, comment data or codebook tables.
*
* \param ci A theora_info structure to fill. This must have been previously
* initialized with theora_info_init(). If \a op contains an initial
* header, theora_decode_header() will fill \a ci with the
* parsed header values. If \a op contains codebook tables,
* theora_decode_header() will parse these and attach an internal
* representation to \a ci->codec_setup.
* \param cc A theora_comment structure to fill. If \a op contains comment
* data, theora_decode_header() will fill \a cc with the parsed
* comments.
* \param op An ogg_packet structure which you expect contains an initial
* header, comment data or codebook tables.
*
* \retval OC_BADHEADER \a op is NULL; OR the first byte of \a op->packet
* has the signature of an initial packet, but op is
* not a b_o_s packet; OR this packet has the signature
* of an initial header packet, but an initial header
* packet has already been seen; OR this packet has the
* signature of a comment packet, but the initial header
* has not yet been seen; OR this packet has the signature
* of a comment packet, but contains invalid data; OR
* this packet has the signature of codebook tables,
* but the initial header or comments have not yet
* been seen; OR this packet has the signature of codebook
* tables, but contains invalid data;
* OR the stream being decoded has a compatible version
* but this packet does not have the signature of a
* theora initial header, comments, or codebook packet
* \retval OC_VERSION The packet data of \a op is an initial header with
* a version which is incompatible with this version of
* libtheora.
* \retval OC_NEWPACKET the stream being decoded has an incompatible (future)
* version and contains an unknown signature.
* \retval 0 Success
*
* \note The normal usage is that theora_decode_header() be called on the
* first three packets of a theora logical bitstream in succession.
*/
extern int theora_decode_header(theora_info *ci, theora_comment *cc,
ogg_packet *op);
/**
* Initialize a theora_state handle for decoding.
* \param th The theora_state handle to initialize.
* \param c A theora_info struct filled with the desired decoding parameters.
* This is of course usually obtained from a previous call to
* theora_decode_header().
* \returns 0 Success
*/
extern int theora_decode_init(theora_state *th, theora_info *c);
/**
* Input a packet containing encoded data into the theora decoder.
* \param th A theora_state handle previously initialized for decoding.
* \param op An ogg_packet containing encoded theora data.
* \retval 0 Success
* \retval OC_BADPACKET \a op does not contain encoded video data
*/
extern int theora_decode_packetin(theora_state *th,ogg_packet *op);
/**
* Output the next available frame of decoded YUV data.
* \param th A theora_state handle previously initialized for decoding.
* \param yuv A yuv_buffer in which libtheora should place the decoded data.
* \retval 0 Success
*/
extern int theora_decode_YUVout(theora_state *th,yuv_buffer *yuv);
/**
* Report whether a theora packet is a header or not
* This function does no verification beyond checking the header
* flag bit so it should not be used for bitstream identification;
* use theora_decode_header() for that.
*
* \param op An ogg_packet containing encoded theora data.
* \retval 1 The packet is a header packet
* \retval 0 The packet is not a header packet (and so contains frame data)
*
* Thus function was added in the 1.0alpha4 release.
*/
extern int theora_packet_isheader(ogg_packet *op);
/**
* Report whether a theora packet is a keyframe or not
*
* \param op An ogg_packet containing encoded theora data.
* \retval 1 The packet contains a keyframe image
* \retval 0 The packet is contains an interframe delta
* \retval -1 the packet is not an image data packet at all
*
* Thus function was added in the 1.0alpha4 release.
*/
extern int theora_packet_iskeyframe(ogg_packet *op);
/**
* Report the granulepos shift radix
*
* When embedded in Ogg, Theora uses a two-part granulepos,
* splitting the 64-bit field into two pieces. The more-significant
* section represents the frame count at the last keyframe,
* and the less-significant section represents the count of
* frames since the last keyframe. In this way the overall
* field is still non-decreasing with time, but usefully encodes
* a pointer to the last keyframe, which is necessary for
* correctly restarting decode after a seek.
*
* This function reports the number of bits used to represent
* the distance to the last keyframe, and thus how the granulepos
* field must be shifted or masked to obtain the two parts.
*
* Since libtheora returns compressed data in an ogg_packet
* structure, this may be generally useful even if the Theora
* packets are not being used in an Ogg container.
*
* \param ti A previously initialized theora_info struct
* \returns The bit shift dividing the two granulepos fields
*
* This function was added inthe 1.0alpha5 release.
*/
int theora_granule_shift(theora_info *ti);
/**
* Convert a granulepos to an absolute frame number. The granulepos is
* interpreted in the context of a given theora_state handle.
*
* \param th A previously initialized theora_state handle (encode or decode)
* \param granulepos The granulepos to convert.
* \returns The frame number corresponding to \a granulepos.
* \retval -1 The given granulepos is undefined (i.e. negative)
*
* Thus function was added in the 1.0alpha4 release.
*/
extern ogg_int64_t theora_granule_frame(theora_state *th,ogg_int64_t granulepos);
/**
* Convert a granulepos to absolute time in seconds. The granulepos is
* interpreted in the context of a given theora_state handle.
* \param th A previously initialized theora_state handle (encode or decode)
* \param granulepos The granulepos to convert.
* \returns The absolute time in seconds corresponding to \a granulepos.
* \retval -1. The given granulepos is undefined (i.e. negative), or
* \retval -1. The function has been disabled because floating
* point support is not available.
*/
extern double theora_granule_time(theora_state *th,ogg_int64_t granulepos);
/**
* Initialize a theora_info structure. All values within the given theora_info
* structure are initialized, and space is allocated within libtheora for
* internal codec setup data.
* \param c A theora_info struct to initialize.
*/
extern void theora_info_init(theora_info *c);
/**
* Clear a theora_info structure. All values within the given theora_info
* structure are cleared, and associated internal codec setup data is freed.
* \param c A theora_info struct to initialize.
*/
extern void theora_info_clear(theora_info *c);
/**
* Free all internal data associated with a theora_state handle.
* \param t A theora_state handle.
*/
extern void theora_clear(theora_state *t);
/** Initialize an allocated theora_comment structure */
extern void theora_comment_init(theora_comment *tc);
/** Add a comment to an initialized theora_comment structure
\param comment must be a null-terminated string encoding
the comment in "TAG=the value" form */
extern void theora_comment_add(theora_comment *tc, char *comment);
/** Add a comment to an initialized theora_comment structure
\param tag a null-terminated string containing the tag
associated with the comment.
\param value the corresponding value as a null-terminated string
Neither theora_comment_add() nor theora_comment_add_tag() support
comments containing null values, although the bitstream format
supports this. To add such comments you will need to manipulate
the theora_comment structure directly */
extern void theora_comment_add_tag(theora_comment *tc,
char *tag, char *value);
/** look up a comment value by tag
\param tc an initialized theora_comment structure
\param tag the tag to look up
\param count the instance of the tag. The same tag can appear
multiple times, each with a distinct and ordered value, so
an index is required to retrieve them all.
Use theora_comment_query_count() to get the legal range for the
count parameter
\returns a pointer to the queried tag's value
\retval NULL if no matching tag is found */
extern char *theora_comment_query(theora_comment *tc, char *tag, int count);
/** look up the number of instances of a tag
\param tc an initialized theora_comment structure
\param tag the tag to look up
\returns the number on instances of a particular tag.
Call this first when querying for a specific tag and then interate
over the number of instances with separate calls to
theora_comment_query() to retrieve all instances in order. */
extern int theora_comment_query_count(theora_comment *tc, char *tag);
/** clears an allocated theora_comment struct so that it can be freed. */
extern void theora_comment_clear(theora_comment *tc);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* _O_THEORA_H_ */

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>English</string>
<key>CFBundleExecutable</key>
<string>Theora</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundlePackageType</key>
<string>FMWK</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>0.0.1d1</string>
</dict>
</plist>

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/********************************************************************
* *
* 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 1994-2001 *
* by the XIPHOPHORUS Company http://www.xiph.org/ *
********************************************************************
function: libvorbis codec headers
last mod: $Id: codec.h 7485 2004-08-05 14:54:23Z thomasvs $
********************************************************************/
#ifndef _vorbis_codec_h_
#define _vorbis_codec_h_
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
#include <ogg/ogg.h>
typedef struct vorbis_info{
int version;
int channels;
long rate;
/* The below bitrate declarations are *hints*.
Combinations of the three values carry the following implications:
all three set to the same value:
implies a fixed rate bitstream
only nominal set:
implies a VBR stream that averages the nominal bitrate. No hard
upper/lower limit
upper and or lower set:
implies a VBR bitstream that obeys the bitrate limits. nominal
may also be set to give a nominal rate.
none set:
the coder does not care to speculate.
*/
long bitrate_upper;
long bitrate_nominal;
long bitrate_lower;
long bitrate_window;
void *codec_setup;
} vorbis_info;
/* vorbis_dsp_state buffers the current vorbis audio
analysis/synthesis state. The DSP state belongs to a specific
logical bitstream ****************************************************/
typedef struct vorbis_dsp_state{
int analysisp;
vorbis_info *vi;
float **pcm;
float **pcmret;
int pcm_storage;
int pcm_current;
int pcm_returned;
int preextrapolate;
int eofflag;
long lW;
long W;
long nW;
long centerW;
ogg_int64_t granulepos;
ogg_int64_t sequence;
ogg_int64_t glue_bits;
ogg_int64_t time_bits;
ogg_int64_t floor_bits;
ogg_int64_t res_bits;
void *backend_state;
} vorbis_dsp_state;
typedef struct vorbis_block{
/* necessary stream state for linking to the framing abstraction */
float **pcm; /* this is a pointer into local storage */
oggpack_buffer opb;
long lW;
long W;
long nW;
int pcmend;
int mode;
int eofflag;
ogg_int64_t granulepos;
ogg_int64_t sequence;
vorbis_dsp_state *vd; /* For read-only access of configuration */
/* local storage to avoid remallocing; it's up to the mapping to
structure it */
void *localstore;
long localtop;
long localalloc;
long totaluse;
struct alloc_chain *reap;
/* bitmetrics for the frame */
long glue_bits;
long time_bits;
long floor_bits;
long res_bits;
void *internal;
} vorbis_block;
/* vorbis_block is a single block of data to be processed as part of
the analysis/synthesis stream; it belongs to a specific logical
bitstream, but is independant from other vorbis_blocks belonging to
that logical bitstream. *************************************************/
struct alloc_chain{
void *ptr;
struct alloc_chain *next;
};
/* vorbis_info contains all the setup information specific to the
specific compression/decompression mode in progress (eg,
psychoacoustic settings, channel setup, options, codebook
etc). vorbis_info and substructures are in backends.h.
*********************************************************************/
/* the comments are not part of vorbis_info so that vorbis_info can be
static storage */
typedef struct vorbis_comment{
/* unlimited user comment fields. libvorbis writes 'libvorbis'
whatever vendor is set to in encode */
char **user_comments;
int *comment_lengths;
int comments;
char *vendor;
} vorbis_comment;
/* libvorbis encodes in two abstraction layers; first we perform DSP
and produce a packet (see docs/analysis.txt). The packet is then
coded into a framed OggSquish bitstream by the second layer (see
docs/framing.txt). Decode is the reverse process; we sync/frame
the bitstream and extract individual packets, then decode the
packet back into PCM audio.
The extra framing/packetizing is used in streaming formats, such as
files. Over the net (such as with UDP), the framing and
packetization aren't necessary as they're provided by the transport
and the streaming layer is not used */
/* Vorbis PRIMITIVES: general ***************************************/
extern void vorbis_info_init(vorbis_info *vi);
extern void vorbis_info_clear(vorbis_info *vi);
extern int vorbis_info_blocksize(vorbis_info *vi,int zo);
extern void vorbis_comment_init(vorbis_comment *vc);
extern void vorbis_comment_add(vorbis_comment *vc, char *comment);
extern void vorbis_comment_add_tag(vorbis_comment *vc,
char *tag, char *contents);
extern char *vorbis_comment_query(vorbis_comment *vc, char *tag, int count);
extern int vorbis_comment_query_count(vorbis_comment *vc, char *tag);
extern void vorbis_comment_clear(vorbis_comment *vc);
extern int vorbis_block_init(vorbis_dsp_state *v, vorbis_block *vb);
extern int vorbis_block_clear(vorbis_block *vb);
extern void vorbis_dsp_clear(vorbis_dsp_state *v);
extern double vorbis_granule_time(vorbis_dsp_state *v,
ogg_int64_t granulepos);
/* Vorbis PRIMITIVES: analysis/DSP layer ****************************/
extern int vorbis_analysis_init(vorbis_dsp_state *v,vorbis_info *vi);
extern int vorbis_commentheader_out(vorbis_comment *vc, ogg_packet *op);
extern int vorbis_analysis_headerout(vorbis_dsp_state *v,
vorbis_comment *vc,
ogg_packet *op,
ogg_packet *op_comm,
ogg_packet *op_code);
extern float **vorbis_analysis_buffer(vorbis_dsp_state *v,int vals);
extern int vorbis_analysis_wrote(vorbis_dsp_state *v,int vals);
extern int vorbis_analysis_blockout(vorbis_dsp_state *v,vorbis_block *vb);
extern int vorbis_analysis(vorbis_block *vb,ogg_packet *op);
extern int vorbis_bitrate_addblock(vorbis_block *vb);
extern int vorbis_bitrate_flushpacket(vorbis_dsp_state *vd,
ogg_packet *op);
/* Vorbis PRIMITIVES: synthesis layer *******************************/
extern int vorbis_synthesis_headerin(vorbis_info *vi,vorbis_comment *vc,
ogg_packet *op);
extern int vorbis_synthesis_init(vorbis_dsp_state *v,vorbis_info *vi);
extern int vorbis_synthesis_restart(vorbis_dsp_state *v);
extern int vorbis_synthesis(vorbis_block *vb,ogg_packet *op);
extern int vorbis_synthesis_trackonly(vorbis_block *vb,ogg_packet *op);
extern int vorbis_synthesis_blockin(vorbis_dsp_state *v,vorbis_block *vb);
extern int vorbis_synthesis_pcmout(vorbis_dsp_state *v,float ***pcm);
extern int vorbis_synthesis_lapout(vorbis_dsp_state *v,float ***pcm);
extern int vorbis_synthesis_read(vorbis_dsp_state *v,int samples);
extern long vorbis_packet_blocksize(vorbis_info *vi,ogg_packet *op);
extern int vorbis_synthesis_halfrate(vorbis_info *v,int flag);
extern int vorbis_synthesis_halfrate_p(vorbis_info *v);
/* Vorbis ERRORS and return codes ***********************************/
#define OV_FALSE -1
#define OV_EOF -2
#define OV_HOLE -3
#define OV_EREAD -128
#define OV_EFAULT -129
#define OV_EIMPL -130
#define OV_EINVAL -131
#define OV_ENOTVORBIS -132
#define OV_EBADHEADER -133
#define OV_EVERSION -134
#define OV_ENOTAUDIO -135
#define OV_EBADPACKET -136
#define OV_EBADLINK -137
#define OV_ENOSEEK -138
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif

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/********************************************************************
* *
* 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 1994-2001 *
* by the XIPHOPHORUS Company http://www.xiph.org/ *
* *
********************************************************************
function: vorbis encode-engine setup
last mod: $Id: vorbisenc.h 7485 2004-08-05 14:54:23Z thomasvs $
********************************************************************/
#ifndef _OV_ENC_H_
#define _OV_ENC_H_
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
#include "codec.h"
extern int vorbis_encode_init(vorbis_info *vi,
long channels,
long rate,
long max_bitrate,
long nominal_bitrate,
long min_bitrate);
extern int vorbis_encode_setup_managed(vorbis_info *vi,
long channels,
long rate,
long max_bitrate,
long nominal_bitrate,
long min_bitrate);
extern int vorbis_encode_setup_vbr(vorbis_info *vi,
long channels,
long rate,
float quality /* quality level from 0. (lo) to 1. (hi) */
);
extern int vorbis_encode_init_vbr(vorbis_info *vi,
long channels,
long rate,
float base_quality /* quality level from 0. (lo) to 1. (hi) */
);
extern int vorbis_encode_setup_init(vorbis_info *vi);
extern int vorbis_encode_ctl(vorbis_info *vi,int number,void *arg);
/* deprecated rate management supported only for compatability */
#define OV_ECTL_RATEMANAGE_GET 0x10
#define OV_ECTL_RATEMANAGE_SET 0x11
#define OV_ECTL_RATEMANAGE_AVG 0x12
#define OV_ECTL_RATEMANAGE_HARD 0x13
struct ovectl_ratemanage_arg {
int management_active;
long bitrate_hard_min;
long bitrate_hard_max;
double bitrate_hard_window;
long bitrate_av_lo;
long bitrate_av_hi;
double bitrate_av_window;
double bitrate_av_window_center;
};
/* new rate setup */
#define OV_ECTL_RATEMANAGE2_GET 0x14
#define OV_ECTL_RATEMANAGE2_SET 0x15
struct ovectl_ratemanage2_arg {
int management_active;
long bitrate_limit_min_kbps;
long bitrate_limit_max_kbps;
long bitrate_limit_reservoir_bits;
double bitrate_limit_reservoir_bias;
long bitrate_average_kbps;
double bitrate_average_damping;
};
#define OV_ECTL_LOWPASS_GET 0x20
#define OV_ECTL_LOWPASS_SET 0x21
#define OV_ECTL_IBLOCK_GET 0x30
#define OV_ECTL_IBLOCK_SET 0x31
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif

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/********************************************************************
* *
* 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 1994-2001 *
* by the XIPHOPHORUS Company http://www.xiph.org/ *
* *
********************************************************************
function: stdio-based convenience library for opening/seeking/decoding
last mod: $Id: vorbisfile.h 7485 2004-08-05 14:54:23Z thomasvs $
********************************************************************/
#ifndef _OV_FILE_H_
#define _OV_FILE_H_
#ifdef __cplusplus
extern "C"
{
#endif /* __cplusplus */
#include <stdio.h>
#include "codec.h"
/* The function prototypes for the callbacks are basically the same as for
* the stdio functions fread, fseek, fclose, ftell.
* The one difference is that the FILE * arguments have been replaced with
* a void * - this is to be used as a pointer to whatever internal data these
* functions might need. In the stdio case, it's just a FILE * cast to a void *
*
* If you use other functions, check the docs for these functions and return
* the right values. For seek_func(), you *MUST* return -1 if the stream is
* unseekable
*/
typedef struct {
size_t (*read_func) (void *ptr, size_t size, size_t nmemb, void *datasource);
int (*seek_func) (void *datasource, ogg_int64_t offset, int whence);
int (*close_func) (void *datasource);
long (*tell_func) (void *datasource);
} ov_callbacks;
#define NOTOPEN 0
#define PARTOPEN 1
#define OPENED 2
#define STREAMSET 3
#define INITSET 4
typedef struct OggVorbis_File {
void *datasource; /* Pointer to a FILE *, etc. */
int seekable;
ogg_int64_t offset;
ogg_int64_t end;
ogg_sync_state oy;
/* If the FILE handle isn't seekable (eg, a pipe), only the current
stream appears */
int links;
ogg_int64_t *offsets;
ogg_int64_t *dataoffsets;
long *serialnos;
ogg_int64_t *pcmlengths; /* overloaded to maintain binary
compatability; x2 size, stores both
beginning and end values */
vorbis_info *vi;
vorbis_comment *vc;
/* Decoding working state local storage */
ogg_int64_t pcm_offset;
int ready_state;
long current_serialno;
int current_link;
double bittrack;
double samptrack;
ogg_stream_state os; /* take physical pages, weld into a logical
stream of packets */
vorbis_dsp_state vd; /* central working state for the packet->PCM decoder */
vorbis_block vb; /* local working space for packet->PCM decode */
ov_callbacks callbacks;
} OggVorbis_File;
extern int ov_clear(OggVorbis_File *vf);
extern int ov_open(FILE *f,OggVorbis_File *vf,char *initial,long ibytes);
extern int ov_open_callbacks(void *datasource, OggVorbis_File *vf,
char *initial, long ibytes, ov_callbacks callbacks);
extern int ov_test(FILE *f,OggVorbis_File *vf,char *initial,long ibytes);
extern int ov_test_callbacks(void *datasource, OggVorbis_File *vf,
char *initial, long ibytes, ov_callbacks callbacks);
extern int ov_test_open(OggVorbis_File *vf);
extern long ov_bitrate(OggVorbis_File *vf,int i);
extern long ov_bitrate_instant(OggVorbis_File *vf);
extern long ov_streams(OggVorbis_File *vf);
extern long ov_seekable(OggVorbis_File *vf);
extern long ov_serialnumber(OggVorbis_File *vf,int i);
extern ogg_int64_t ov_raw_total(OggVorbis_File *vf,int i);
extern ogg_int64_t ov_pcm_total(OggVorbis_File *vf,int i);
extern double ov_time_total(OggVorbis_File *vf,int i);
extern int ov_raw_seek(OggVorbis_File *vf,ogg_int64_t pos);
extern int ov_pcm_seek(OggVorbis_File *vf,ogg_int64_t pos);
extern int ov_pcm_seek_page(OggVorbis_File *vf,ogg_int64_t pos);
extern int ov_time_seek(OggVorbis_File *vf,double pos);
extern int ov_time_seek_page(OggVorbis_File *vf,double pos);
extern int ov_raw_seek_lap(OggVorbis_File *vf,ogg_int64_t pos);
extern int ov_pcm_seek_lap(OggVorbis_File *vf,ogg_int64_t pos);
extern int ov_pcm_seek_page_lap(OggVorbis_File *vf,ogg_int64_t pos);
extern int ov_time_seek_lap(OggVorbis_File *vf,double pos);
extern int ov_time_seek_page_lap(OggVorbis_File *vf,double pos);
extern ogg_int64_t ov_raw_tell(OggVorbis_File *vf);
extern ogg_int64_t ov_pcm_tell(OggVorbis_File *vf);
extern double ov_time_tell(OggVorbis_File *vf);
extern vorbis_info *ov_info(OggVorbis_File *vf,int link);
extern vorbis_comment *ov_comment(OggVorbis_File *vf,int link);
extern long ov_read_float(OggVorbis_File *vf,float ***pcm_channels,int samples,
int *bitstream);
extern long ov_read(OggVorbis_File *vf,char *buffer,int length,
int bigendianp,int word,int sgned,int *bitstream);
extern int ov_crosslap(OggVorbis_File *vf1,OggVorbis_File *vf2);
extern int ov_halfrate(OggVorbis_File *vf,int flag);
extern int ov_halfrate_p(OggVorbis_File *vf);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>English</string>
<key>CFBundleExecutable</key>
<string>Vorbis</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundlePackageType</key>
<string>FMWK</string>
<key>CFBundleSignature</key>
<string>Vrbs</string>
<key>CFBundleVersion</key>
<string>0.0.1d1</string>
</dict>
</plist>

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