/******************************************************************** * * * 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 ********************************************************************/ #ifndef _OGG_H #define _OGG_H #ifdef __cplusplus extern "C" { #endif #include "codeclib.h" typedef short spx_ogg_int16_t; typedef unsigned short spx_ogg_uint16_t; typedef int spx_ogg_int32_t; typedef unsigned int spx_ogg_uint32_t; typedef long long spx_ogg_int64_t; #define _spx_ogg_malloc codec_malloc #define _spx_ogg_calloc codec_calloc #define _spx_ogg_realloc codec_realloc #define _spx_ogg_free codec_free typedef struct { long endbyte; int endbit; unsigned char *buffer; unsigned char *ptr; long storage; } oggpack_buffer; /* spx_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; } spx_ogg_page; /* spx_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 */ spx_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; spx_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 */ spx_ogg_int64_t granulepos; } spx_ogg_stream_state; /* spx_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; spx_ogg_int64_t granulepos; spx_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 */ } spx_ogg_packet; typedef struct { unsigned char *data; int storage; int fill; int returned; int unsynced; int headerbytes; int bodybytes; } spx_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 spx_ogg_stream_packetin(spx_ogg_stream_state *os, spx_ogg_packet *op); extern int spx_ogg_stream_pageout(spx_ogg_stream_state *os, spx_ogg_page *og); extern int spx_ogg_stream_flush(spx_ogg_stream_state *os, spx_ogg_page *og); /* Ogg BITSTREAM PRIMITIVES: decoding **************************/ extern int spx_ogg_sync_init(spx_ogg_sync_state *oy); extern int spx_ogg_sync_clear(spx_ogg_sync_state *oy); extern int spx_ogg_sync_reset(spx_ogg_sync_state *oy); extern int spx_ogg_sync_destroy(spx_ogg_sync_state *oy); extern void spx_ogg_alloc_buffer(spx_ogg_sync_state *oy, long size); extern char *spx_ogg_sync_buffer(spx_ogg_sync_state *oy, long size); extern int spx_ogg_sync_wrote(spx_ogg_sync_state *oy, long bytes); extern long spx_ogg_sync_pageseek(spx_ogg_sync_state *oy,spx_ogg_page *og); extern int spx_ogg_sync_pageout(spx_ogg_sync_state *oy, spx_ogg_page *og); extern int spx_ogg_stream_pagein(spx_ogg_stream_state *os, spx_ogg_page *og); extern int spx_ogg_stream_packetout(spx_ogg_stream_state *os,spx_ogg_packet *op); extern int spx_ogg_stream_packetpeek(spx_ogg_stream_state *os,spx_ogg_packet *op); /* Ogg BITSTREAM PRIMITIVES: general ***************************/ extern int spx_ogg_stream_init(spx_ogg_stream_state *os,int serialno); extern int spx_ogg_stream_clear(spx_ogg_stream_state *os); extern int spx_ogg_stream_reset(spx_ogg_stream_state *os); extern int spx_ogg_stream_reset_serialno(spx_ogg_stream_state *os,int serialno); extern int spx_ogg_stream_destroy(spx_ogg_stream_state *os); extern int spx_ogg_stream_eos(spx_ogg_stream_state *os); extern void spx_ogg_page_checksum_set(spx_ogg_page *og); extern int spx_ogg_page_version(spx_ogg_page *og); extern int spx_ogg_page_continued(spx_ogg_page *og); extern int spx_ogg_page_bos(spx_ogg_page *og); extern int spx_ogg_page_eos(spx_ogg_page *og); extern spx_ogg_int64_t spx_ogg_page_granulepos(spx_ogg_page *og); extern int spx_ogg_page_serialno(spx_ogg_page *og); extern long spx_ogg_page_pageno(spx_ogg_page *og); extern int spx_ogg_page_packets(spx_ogg_page *og); extern void spx_ogg_packet_clear(spx_ogg_packet *op); #ifdef __cplusplus } #endif #endif /* _OGG_H */