author | unc0rr |
Thu, 23 Jun 2011 21:19:43 +0400 | |
changeset 5294 | 67278f1cba2c |
parent 5170 | f7e49eff3708 |
permissions | -rw-r--r-- |
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/******************************************************************** |
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* * |
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* THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE. * |
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* * |
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* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * |
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* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * |
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* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * |
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* * |
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* THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2003 * |
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* BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * |
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* * |
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******************************************************************** |
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function: subsumed libogg includes |
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********************************************************************/ |
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#ifndef _OGG_H |
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#define _OGG_H |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#include "os_types.h" |
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typedef struct ogg_buffer_state{ |
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struct ogg_buffer *unused_buffers; |
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struct ogg_reference *unused_references; |
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int outstanding; |
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int shutdown; |
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} ogg_buffer_state; |
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typedef struct ogg_buffer { |
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unsigned char *data; |
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long size; |
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int refcount; |
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union { |
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ogg_buffer_state *owner; |
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struct ogg_buffer *next; |
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} ptr; |
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} ogg_buffer; |
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typedef struct ogg_reference { |
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ogg_buffer *buffer; |
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long begin; |
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long length; |
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struct ogg_reference *next; |
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} ogg_reference; |
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typedef struct oggpack_buffer { |
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int headbit; |
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unsigned char *headptr; |
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long headend; |
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/* memory management */ |
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ogg_reference *head; |
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ogg_reference *tail; |
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/* render the byte/bit counter API constant time */ |
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long count; /* doesn't count the tail */ |
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} oggpack_buffer; |
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typedef struct oggbyte_buffer { |
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ogg_reference *baseref; |
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ogg_reference *ref; |
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unsigned char *ptr; |
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long pos; |
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long end; |
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} oggbyte_buffer; |
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typedef struct ogg_sync_state { |
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/* decode memory management pool */ |
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ogg_buffer_state *bufferpool; |
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/* stream buffers */ |
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ogg_reference *fifo_head; |
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ogg_reference *fifo_tail; |
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long fifo_fill; |
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/* stream sync management */ |
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int unsynced; |
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int headerbytes; |
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int bodybytes; |
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} ogg_sync_state; |
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typedef struct ogg_stream_state { |
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ogg_reference *header_head; |
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ogg_reference *header_tail; |
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ogg_reference *body_head; |
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ogg_reference *body_tail; |
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int e_o_s; /* set when we have buffered the last |
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packet in the logical bitstream */ |
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int b_o_s; /* set after we've written the initial page |
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of a logical bitstream */ |
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long serialno; |
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long pageno; |
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ogg_int64_t packetno; /* sequence number for decode; the framing |
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knows where there's a hole in the data, |
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but we need coupling so that the codec |
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(which is in a seperate abstraction |
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layer) also knows about the gap */ |
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ogg_int64_t granulepos; |
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int lacing_fill; |
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ogg_uint32_t body_fill; |
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/* decode-side state data */ |
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int holeflag; |
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int spanflag; |
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int clearflag; |
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int laceptr; |
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ogg_uint32_t body_fill_next; |
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} ogg_stream_state; |
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typedef struct { |
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ogg_reference *packet; |
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long bytes; |
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long b_o_s; |
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long e_o_s; |
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ogg_int64_t granulepos; |
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ogg_int64_t packetno; /* sequence number for decode; the framing |
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knows where there's a hole in the data, |
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but we need coupling so that the codec |
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(which is in a seperate abstraction |
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layer) also knows about the gap */ |
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} ogg_packet; |
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typedef struct { |
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ogg_reference *header; |
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int header_len; |
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ogg_reference *body; |
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long body_len; |
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} ogg_page; |
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/* Ogg BITSTREAM PRIMITIVES: bitstream ************************/ |
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142 |
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extern void oggpack_readinit(oggpack_buffer *b,ogg_reference *r); |
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extern long oggpack_look(oggpack_buffer *b,int bits); |
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extern void oggpack_adv(oggpack_buffer *b,int bits); |
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extern long oggpack_read(oggpack_buffer *b,int bits); |
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extern long oggpack_bytes(oggpack_buffer *b); |
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extern long oggpack_bits(oggpack_buffer *b); |
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extern int oggpack_eop(oggpack_buffer *b); |
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150 |
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/* Ogg BITSTREAM PRIMITIVES: decoding **************************/ |
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152 |
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extern ogg_sync_state *ogg_sync_create(void); |
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extern int ogg_sync_destroy(ogg_sync_state *oy); |
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extern int ogg_sync_reset(ogg_sync_state *oy); |
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156 |
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extern unsigned char *ogg_sync_bufferin(ogg_sync_state *oy, long size); |
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extern int ogg_sync_wrote(ogg_sync_state *oy, long bytes); |
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extern long ogg_sync_pageseek(ogg_sync_state *oy,ogg_page *og); |
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extern int ogg_sync_pageout(ogg_sync_state *oy, ogg_page *og); |
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extern int ogg_stream_pagein(ogg_stream_state *os, ogg_page *og); |
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extern int ogg_stream_packetout(ogg_stream_state *os,ogg_packet *op); |
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extern int ogg_stream_packetpeek(ogg_stream_state *os,ogg_packet *op); |
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/* Ogg BITSTREAM PRIMITIVES: general ***************************/ |
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166 |
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extern ogg_stream_state *ogg_stream_create(int serialno); |
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extern int ogg_stream_destroy(ogg_stream_state *os); |
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extern int ogg_stream_reset(ogg_stream_state *os); |
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extern int ogg_stream_reset_serialno(ogg_stream_state *os,int serialno); |
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extern int ogg_stream_eos(ogg_stream_state *os); |
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extern int ogg_page_checksum_set(ogg_page *og); |
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extern int ogg_page_version(ogg_page *og); |
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extern int ogg_page_continued(ogg_page *og); |
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extern int ogg_page_bos(ogg_page *og); |
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extern int ogg_page_eos(ogg_page *og); |
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extern ogg_int64_t ogg_page_granulepos(ogg_page *og); |
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extern ogg_uint32_t ogg_page_serialno(ogg_page *og); |
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extern ogg_uint32_t ogg_page_pageno(ogg_page *og); |
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extern int ogg_page_packets(ogg_page *og); |
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extern int ogg_page_getbuffer(ogg_page *og, unsigned char **buffer); |
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extern int ogg_packet_release(ogg_packet *op); |
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extern int ogg_page_release(ogg_page *og); |
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extern void ogg_page_dup(ogg_page *d, ogg_page *s); |
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/* Ogg BITSTREAM PRIMITIVES: return codes ***************************/ |
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#define OGG_SUCCESS 0 |
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#define OGG_HOLE -10 |
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#define OGG_SPAN -11 |
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#define OGG_EVERSION -12 |
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#define OGG_ESERIAL -13 |
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#define OGG_EINVAL -14 |
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#define OGG_EEOS -15 |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* _OGG_H */ |