mirror of
https://github.com/mpv-player/mpv
synced 2024-12-15 11:25:10 +00:00
00e49dd038
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@15251 b3059339-0415-0410-9bf9-f77b7e298cf2
197 lines
7.4 KiB
C
197 lines
7.4 KiB
C
/********************************************************************
|
|
* *
|
|
* 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: $Id$
|
|
|
|
********************************************************************/
|
|
#ifndef _OGG_H
|
|
#define _OGG_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include "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 */
|