EVOLUTION-MANAGER

Edit File: ogg.h

/******************************************************************** * * * 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 1994-2007 * * by the Xiph.Org Foundation http://www.xiph.org/ * * * ******************************************************************** function: toplevel libogg include last mod: $Id: ogg.h 18044 2011-08-01 17:55:20Z gmaxwell $ ********************************************************************/ #ifndef _OGG_H #define _OGG_H #ifdef __cplusplus extern "C" { #endif #include <stddef.h> #include <ogg/os_types.h> typedef struct { void *iov_base; size_t iov_len; } ogg_iovec_t; 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 separate 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 separate 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 int oggpack_writecheck(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 int oggpackB_writecheck(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_iovecin(ogg_stream_state *os, ogg_iovec_t *iov, int count, long e_o_s, ogg_int64_t granulepos); extern int ogg_stream_pageout(ogg_stream_state *os, ogg_page *og); extern int ogg_stream_pageout_fill(ogg_stream_state *os, ogg_page *og, int nfill); extern int ogg_stream_flush(ogg_stream_state *os, ogg_page *og); extern int ogg_stream_flush_fill(ogg_stream_state *os, ogg_page *og, int nfill); /* 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 int ogg_sync_check(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_check(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(const ogg_page *og); extern int ogg_page_continued(const ogg_page *og); extern int ogg_page_bos(const ogg_page *og); extern int ogg_page_eos(const ogg_page *og); extern ogg_int64_t ogg_page_granulepos(const ogg_page *og); extern int ogg_page_serialno(const ogg_page *og); extern long ogg_page_pageno(const ogg_page *og); extern int ogg_page_packets(const ogg_page *og); extern void ogg_packet_clear(ogg_packet *op); #ifdef __cplusplus } #endif #endif /* _OGG_H */