/******************************************************************** * * * THIS FILE IS PART OF THE OggVorbis 'TREMOR' 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 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * * * ******************************************************************** function: subsumed libogg includes ********************************************************************/ #ifndef _OGG_H #define _OGG_H #ifdef __cplusplus extern "C" { #endif #include "os_types.h" typedef struct ogg_buffer_state{ struct ogg_buffer *unused_buffers; struct ogg_reference *unused_references; int outstanding; int shutdown; } ogg_buffer_state; typedef struct ogg_buffer { unsigned char *data; long size; int refcount; union { ogg_buffer_state *owner; struct ogg_buffer *next; } ptr; } ogg_buffer; typedef struct ogg_reference { ogg_buffer *buffer; long begin; long length; struct ogg_reference *next; } ogg_reference; typedef struct oggpack_buffer { int headbit; unsigned char *headptr; long headend; /* memory management */ ogg_reference *head; ogg_reference *tail; /* render the byte/bit counter API constant time */ long count; /* doesn't count the tail */ } oggpack_buffer; typedef struct oggbyte_buffer { ogg_reference *baseref; ogg_reference *ref; unsigned char *ptr; long pos; long end; } oggbyte_buffer; typedef struct ogg_sync_state { /* decode memory management pool */ ogg_buffer_state *bufferpool; /* stream buffers */ ogg_reference *fifo_head; ogg_reference *fifo_tail; long fifo_fill; /* stream sync management */ int unsynced; int headerbytes; int bodybytes; } ogg_sync_state; typedef struct ogg_stream_state { ogg_reference *header_head; ogg_reference *header_tail; ogg_reference *body_head; ogg_reference *body_tail; 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; int lacing_fill; ogg_uint32_t body_fill; /* decode-side state data */ int holeflag; int spanflag; int clearflag; int laceptr; ogg_uint32_t body_fill_next; } ogg_stream_state; typedef struct { ogg_reference *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 { ogg_reference *header; int header_len; ogg_reference *body; long body_len; } ogg_page; /* Ogg BITSTREAM PRIMITIVES: bitstream ************************/ extern void oggpack_readinit(oggpack_buffer *b,ogg_reference *r); extern long oggpack_look(oggpack_buffer *b,int bits); extern void oggpack_adv(oggpack_buffer *b,int bits); extern long oggpack_read(oggpack_buffer *b,int bits); extern long oggpack_bytes(oggpack_buffer *b); extern long oggpack_bits(oggpack_buffer *b); extern int oggpack_eop(oggpack_buffer *b); /* Ogg BITSTREAM PRIMITIVES: decoding **************************/ extern ogg_sync_state *ogg_sync_create(void); extern int ogg_sync_destroy(ogg_sync_state *oy); extern int ogg_sync_reset(ogg_sync_state *oy); extern unsigned char *ogg_sync_bufferin(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 ogg_stream_state *ogg_stream_create(int serialno); extern int ogg_stream_destroy(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_eos(ogg_stream_state *os); extern int 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 ogg_uint32_t ogg_page_serialno(ogg_page *og); extern ogg_uint32_t ogg_page_pageno(ogg_page *og); extern int ogg_page_packets(ogg_page *og); extern int ogg_page_getbuffer(ogg_page *og, unsigned char **buffer); extern int ogg_packet_release(ogg_packet *op); extern int ogg_page_release(ogg_page *og); extern void ogg_page_dup(ogg_page *d, ogg_page *s); /* Ogg BITSTREAM PRIMITIVES: return codes ***************************/ #define OGG_SUCCESS 0 #define OGG_HOLE -10 #define OGG_SPAN -11 #define OGG_EVERSION -12 #define OGG_ESERIAL -13 #define OGG_EINVAL -14 #define OGG_EEOS -15 #ifdef __cplusplus } #endif #endif /* _OGG_H */