Chris@70: /******************************************************************** Chris@70: * * Chris@70: * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. * Chris@70: * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * Chris@70: * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * Chris@70: * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * Chris@70: * * Chris@70: * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007 * Chris@70: * by the Xiph.Org Foundation http://www.xiph.org/ * Chris@70: * * Chris@70: ******************************************************************** Chris@70: Chris@70: function: toplevel libogg include Chris@70: last mod: $Id: ogg.h 18044 2011-08-01 17:55:20Z gmaxwell $ Chris@70: Chris@70: ********************************************************************/ Chris@70: #ifndef _OGG_H Chris@70: #define _OGG_H Chris@70: Chris@70: #ifdef __cplusplus Chris@70: extern "C" { Chris@70: #endif Chris@70: Chris@70: #include Chris@70: #include Chris@70: Chris@70: typedef struct { Chris@70: void *iov_base; Chris@70: size_t iov_len; Chris@70: } ogg_iovec_t; Chris@70: Chris@70: typedef struct { Chris@70: long endbyte; Chris@70: int endbit; Chris@70: Chris@70: unsigned char *buffer; Chris@70: unsigned char *ptr; Chris@70: long storage; Chris@70: } oggpack_buffer; Chris@70: Chris@70: /* ogg_page is used to encapsulate the data in one Ogg bitstream page *****/ Chris@70: Chris@70: typedef struct { Chris@70: unsigned char *header; Chris@70: long header_len; Chris@70: unsigned char *body; Chris@70: long body_len; Chris@70: } ogg_page; Chris@70: Chris@70: /* ogg_stream_state contains the current encode/decode state of a logical Chris@70: Ogg bitstream **********************************************************/ Chris@70: Chris@70: typedef struct { Chris@70: unsigned char *body_data; /* bytes from packet bodies */ Chris@70: long body_storage; /* storage elements allocated */ Chris@70: long body_fill; /* elements stored; fill mark */ Chris@70: long body_returned; /* elements of fill returned */ Chris@70: Chris@70: Chris@70: int *lacing_vals; /* The values that will go to the segment table */ Chris@70: ogg_int64_t *granule_vals; /* granulepos values for headers. Not compact Chris@70: this way, but it is simple coupled to the Chris@70: lacing fifo */ Chris@70: long lacing_storage; Chris@70: long lacing_fill; Chris@70: long lacing_packet; Chris@70: long lacing_returned; Chris@70: Chris@70: unsigned char header[282]; /* working space for header encode */ Chris@70: int header_fill; Chris@70: Chris@70: int e_o_s; /* set when we have buffered the last packet in the Chris@70: logical bitstream */ Chris@70: int b_o_s; /* set after we've written the initial page Chris@70: of a logical bitstream */ Chris@70: long serialno; Chris@70: long pageno; Chris@70: ogg_int64_t packetno; /* sequence number for decode; the framing Chris@70: knows where there's a hole in the data, Chris@70: but we need coupling so that the codec Chris@70: (which is in a separate abstraction Chris@70: layer) also knows about the gap */ Chris@70: ogg_int64_t granulepos; Chris@70: Chris@70: } ogg_stream_state; Chris@70: Chris@70: /* ogg_packet is used to encapsulate the data and metadata belonging Chris@70: to a single raw Ogg/Vorbis packet *************************************/ Chris@70: Chris@70: typedef struct { Chris@70: unsigned char *packet; Chris@70: long bytes; Chris@70: long b_o_s; Chris@70: long e_o_s; Chris@70: Chris@70: ogg_int64_t granulepos; Chris@70: Chris@70: ogg_int64_t packetno; /* sequence number for decode; the framing Chris@70: knows where there's a hole in the data, Chris@70: but we need coupling so that the codec Chris@70: (which is in a separate abstraction Chris@70: layer) also knows about the gap */ Chris@70: } ogg_packet; Chris@70: Chris@70: typedef struct { Chris@70: unsigned char *data; Chris@70: int storage; Chris@70: int fill; Chris@70: int returned; Chris@70: Chris@70: int unsynced; Chris@70: int headerbytes; Chris@70: int bodybytes; Chris@70: } ogg_sync_state; Chris@70: Chris@70: /* Ogg BITSTREAM PRIMITIVES: bitstream ************************/ Chris@70: Chris@70: extern void oggpack_writeinit(oggpack_buffer *b); Chris@70: extern int oggpack_writecheck(oggpack_buffer *b); Chris@70: extern void oggpack_writetrunc(oggpack_buffer *b,long bits); Chris@70: extern void oggpack_writealign(oggpack_buffer *b); Chris@70: extern void oggpack_writecopy(oggpack_buffer *b,void *source,long bits); Chris@70: extern void oggpack_reset(oggpack_buffer *b); Chris@70: extern void oggpack_writeclear(oggpack_buffer *b); Chris@70: extern void oggpack_readinit(oggpack_buffer *b,unsigned char *buf,int bytes); Chris@70: extern void oggpack_write(oggpack_buffer *b,unsigned long value,int bits); Chris@70: extern long oggpack_look(oggpack_buffer *b,int bits); Chris@70: extern long oggpack_look1(oggpack_buffer *b); Chris@70: extern void oggpack_adv(oggpack_buffer *b,int bits); Chris@70: extern void oggpack_adv1(oggpack_buffer *b); Chris@70: extern long oggpack_read(oggpack_buffer *b,int bits); Chris@70: extern long oggpack_read1(oggpack_buffer *b); Chris@70: extern long oggpack_bytes(oggpack_buffer *b); Chris@70: extern long oggpack_bits(oggpack_buffer *b); Chris@70: extern unsigned char *oggpack_get_buffer(oggpack_buffer *b); Chris@70: Chris@70: extern void oggpackB_writeinit(oggpack_buffer *b); Chris@70: extern int oggpackB_writecheck(oggpack_buffer *b); Chris@70: extern void oggpackB_writetrunc(oggpack_buffer *b,long bits); Chris@70: extern void oggpackB_writealign(oggpack_buffer *b); Chris@70: extern void oggpackB_writecopy(oggpack_buffer *b,void *source,long bits); Chris@70: extern void oggpackB_reset(oggpack_buffer *b); Chris@70: extern void oggpackB_writeclear(oggpack_buffer *b); Chris@70: extern void oggpackB_readinit(oggpack_buffer *b,unsigned char *buf,int bytes); Chris@70: extern void oggpackB_write(oggpack_buffer *b,unsigned long value,int bits); Chris@70: extern long oggpackB_look(oggpack_buffer *b,int bits); Chris@70: extern long oggpackB_look1(oggpack_buffer *b); Chris@70: extern void oggpackB_adv(oggpack_buffer *b,int bits); Chris@70: extern void oggpackB_adv1(oggpack_buffer *b); Chris@70: extern long oggpackB_read(oggpack_buffer *b,int bits); Chris@70: extern long oggpackB_read1(oggpack_buffer *b); Chris@70: extern long oggpackB_bytes(oggpack_buffer *b); Chris@70: extern long oggpackB_bits(oggpack_buffer *b); Chris@70: extern unsigned char *oggpackB_get_buffer(oggpack_buffer *b); Chris@70: Chris@70: /* Ogg BITSTREAM PRIMITIVES: encoding **************************/ Chris@70: Chris@70: extern int ogg_stream_packetin(ogg_stream_state *os, ogg_packet *op); Chris@70: extern int ogg_stream_iovecin(ogg_stream_state *os, ogg_iovec_t *iov, Chris@70: int count, long e_o_s, ogg_int64_t granulepos); Chris@70: extern int ogg_stream_pageout(ogg_stream_state *os, ogg_page *og); Chris@70: extern int ogg_stream_pageout_fill(ogg_stream_state *os, ogg_page *og, int nfill); Chris@70: extern int ogg_stream_flush(ogg_stream_state *os, ogg_page *og); Chris@70: extern int ogg_stream_flush_fill(ogg_stream_state *os, ogg_page *og, int nfill); Chris@70: Chris@70: /* Ogg BITSTREAM PRIMITIVES: decoding **************************/ Chris@70: Chris@70: extern int ogg_sync_init(ogg_sync_state *oy); Chris@70: extern int ogg_sync_clear(ogg_sync_state *oy); Chris@70: extern int ogg_sync_reset(ogg_sync_state *oy); Chris@70: extern int ogg_sync_destroy(ogg_sync_state *oy); Chris@70: extern int ogg_sync_check(ogg_sync_state *oy); Chris@70: Chris@70: extern char *ogg_sync_buffer(ogg_sync_state *oy, long size); Chris@70: extern int ogg_sync_wrote(ogg_sync_state *oy, long bytes); Chris@70: extern long ogg_sync_pageseek(ogg_sync_state *oy,ogg_page *og); Chris@70: extern int ogg_sync_pageout(ogg_sync_state *oy, ogg_page *og); Chris@70: extern int ogg_stream_pagein(ogg_stream_state *os, ogg_page *og); Chris@70: extern int ogg_stream_packetout(ogg_stream_state *os,ogg_packet *op); Chris@70: extern int ogg_stream_packetpeek(ogg_stream_state *os,ogg_packet *op); Chris@70: Chris@70: /* Ogg BITSTREAM PRIMITIVES: general ***************************/ Chris@70: Chris@70: extern int ogg_stream_init(ogg_stream_state *os,int serialno); Chris@70: extern int ogg_stream_clear(ogg_stream_state *os); Chris@70: extern int ogg_stream_reset(ogg_stream_state *os); Chris@70: extern int ogg_stream_reset_serialno(ogg_stream_state *os,int serialno); Chris@70: extern int ogg_stream_destroy(ogg_stream_state *os); Chris@70: extern int ogg_stream_check(ogg_stream_state *os); Chris@70: extern int ogg_stream_eos(ogg_stream_state *os); Chris@70: Chris@70: extern void ogg_page_checksum_set(ogg_page *og); Chris@70: Chris@70: extern int ogg_page_version(const ogg_page *og); Chris@70: extern int ogg_page_continued(const ogg_page *og); Chris@70: extern int ogg_page_bos(const ogg_page *og); Chris@70: extern int ogg_page_eos(const ogg_page *og); Chris@70: extern ogg_int64_t ogg_page_granulepos(const ogg_page *og); Chris@70: extern int ogg_page_serialno(const ogg_page *og); Chris@70: extern long ogg_page_pageno(const ogg_page *og); Chris@70: extern int ogg_page_packets(const ogg_page *og); Chris@70: Chris@70: extern void ogg_packet_clear(ogg_packet *op); Chris@70: Chris@70: Chris@70: #ifdef __cplusplus Chris@70: } Chris@70: #endif Chris@70: Chris@70: #endif /* _OGG_H */