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+/********************************************************************
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+ * *
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+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
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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 SOURCE CODE IS (C) COPYRIGHT 1994-2007 *
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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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+
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+ function: toplevel libogg include
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+
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+ ********************************************************************/
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+#ifndef _OGG_H
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+#define _OGG_H
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+
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+#ifdef __cplusplus
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+extern "C" {
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+#endif
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+
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+#include <stddef.h>
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+#include <ogg/os_types.h>
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+
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+typedef struct {
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+ void *iov_base;
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+ size_t iov_len;
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+} ogg_iovec_t;
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+
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+typedef struct {
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+ long endbyte;
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+ int endbit;
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+
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+ unsigned char *buffer;
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+ unsigned char *ptr;
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+ long storage;
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+} oggpack_buffer;
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+
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+/* ogg_page is used to encapsulate the data in one Ogg bitstream page *****/
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+
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+typedef struct {
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+ unsigned char *header;
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+ long header_len;
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+ unsigned char *body;
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+ long body_len;
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+} ogg_page;
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+
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+/* ogg_stream_state contains the current encode/decode state of a logical
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+ Ogg bitstream **********************************************************/
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+
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+typedef struct {
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+ unsigned char *body_data; /* bytes from packet bodies */
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+ long body_storage; /* storage elements allocated */
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+ long body_fill; /* elements stored; fill mark */
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+ long body_returned; /* elements of fill returned */
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+
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+
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+ int *lacing_vals; /* The values that will go to the segment table */
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+ ogg_int64_t *granule_vals; /* granulepos values for headers. Not compact
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+ this way, but it is simple coupled to the
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+ lacing fifo */
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+ long lacing_storage;
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+ long lacing_fill;
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+ long lacing_packet;
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+ long lacing_returned;
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+
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+ unsigned char header[282]; /* working space for header encode */
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+ int header_fill;
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+
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+ int e_o_s; /* set when we have buffered the last packet in the
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+ 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 separate abstraction
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+ layer) also knows about the gap */
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+ ogg_int64_t granulepos;
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+
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+} ogg_stream_state;
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+
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+/* ogg_packet is used to encapsulate the data and metadata belonging
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+ to a single raw Ogg/Vorbis packet *************************************/
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+
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+typedef struct {
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+ unsigned char *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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+
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+ ogg_int64_t granulepos;
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+
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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 separate abstraction
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+ layer) also knows about the gap */
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+} ogg_packet;
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+
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+typedef struct {
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+ unsigned char *data;
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+ int storage;
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+ int fill;
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+ int returned;
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+
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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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+
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+/* Ogg BITSTREAM PRIMITIVES: bitstream ************************/
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+
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+extern void oggpack_writeinit(oggpack_buffer *b);
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+extern int oggpack_writecheck(oggpack_buffer *b);
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+extern void oggpack_writetrunc(oggpack_buffer *b,long bits);
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+extern void oggpack_writealign(oggpack_buffer *b);
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+extern void oggpack_writecopy(oggpack_buffer *b,void *source,long bits);
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+extern void oggpack_reset(oggpack_buffer *b);
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+extern void oggpack_writeclear(oggpack_buffer *b);
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+extern void oggpack_readinit(oggpack_buffer *b,unsigned char *buf,int bytes);
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+extern void oggpack_write(oggpack_buffer *b,unsigned long value,int bits);
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+extern long oggpack_look(oggpack_buffer *b,int bits);
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+extern long oggpack_look1(oggpack_buffer *b);
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+extern void oggpack_adv(oggpack_buffer *b,int bits);
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+extern void oggpack_adv1(oggpack_buffer *b);
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+extern long oggpack_read(oggpack_buffer *b,int bits);
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+extern long oggpack_read1(oggpack_buffer *b);
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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 unsigned char *oggpack_get_buffer(oggpack_buffer *b);
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+
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+extern void oggpackB_writeinit(oggpack_buffer *b);
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+extern int oggpackB_writecheck(oggpack_buffer *b);
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+extern void oggpackB_writetrunc(oggpack_buffer *b,long bits);
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+extern void oggpackB_writealign(oggpack_buffer *b);
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+extern void oggpackB_writecopy(oggpack_buffer *b,void *source,long bits);
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+extern void oggpackB_reset(oggpack_buffer *b);
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+extern void oggpackB_writeclear(oggpack_buffer *b);
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+extern void oggpackB_readinit(oggpack_buffer *b,unsigned char *buf,int bytes);
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+extern void oggpackB_write(oggpack_buffer *b,unsigned long value,int bits);
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+extern long oggpackB_look(oggpack_buffer *b,int bits);
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+extern long oggpackB_look1(oggpack_buffer *b);
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+extern void oggpackB_adv(oggpack_buffer *b,int bits);
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+extern void oggpackB_adv1(oggpack_buffer *b);
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+extern long oggpackB_read(oggpack_buffer *b,int bits);
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+extern long oggpackB_read1(oggpack_buffer *b);
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+extern long oggpackB_bytes(oggpack_buffer *b);
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+extern long oggpackB_bits(oggpack_buffer *b);
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+extern unsigned char *oggpackB_get_buffer(oggpack_buffer *b);
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+
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+/* Ogg BITSTREAM PRIMITIVES: encoding **************************/
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+
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+extern int ogg_stream_packetin(ogg_stream_state *os, ogg_packet *op);
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+extern int ogg_stream_iovecin(ogg_stream_state *os, ogg_iovec_t *iov,
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+ int count, long e_o_s, ogg_int64_t granulepos);
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+extern int ogg_stream_pageout(ogg_stream_state *os, ogg_page *og);
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+extern int ogg_stream_pageout_fill(ogg_stream_state *os, ogg_page *og, int nfill);
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+extern int ogg_stream_flush(ogg_stream_state *os, ogg_page *og);
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+extern int ogg_stream_flush_fill(ogg_stream_state *os, ogg_page *og, int nfill);
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+
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+/* Ogg BITSTREAM PRIMITIVES: decoding **************************/
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+
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+extern int ogg_sync_init(ogg_sync_state *oy);
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+extern int ogg_sync_clear(ogg_sync_state *oy);
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+extern int ogg_sync_reset(ogg_sync_state *oy);
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+extern int ogg_sync_destroy(ogg_sync_state *oy);
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+extern int ogg_sync_check(ogg_sync_state *oy);
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+
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+extern char *ogg_sync_buffer(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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+
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+/* Ogg BITSTREAM PRIMITIVES: general ***************************/
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+
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+extern int ogg_stream_init(ogg_stream_state *os,int serialno);
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+extern int ogg_stream_clear(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_destroy(ogg_stream_state *os);
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+extern int ogg_stream_check(ogg_stream_state *os);
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+extern int ogg_stream_eos(ogg_stream_state *os);
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+
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+extern void ogg_page_checksum_set(ogg_page *og);
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+
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+extern int ogg_page_version(const ogg_page *og);
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+extern int ogg_page_continued(const ogg_page *og);
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+extern int ogg_page_bos(const ogg_page *og);
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+extern int ogg_page_eos(const ogg_page *og);
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+extern ogg_int64_t ogg_page_granulepos(const ogg_page *og);
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+extern int ogg_page_serialno(const ogg_page *og);
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+extern long ogg_page_pageno(const ogg_page *og);
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+extern int ogg_page_packets(const ogg_page *og);
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+
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+extern void ogg_packet_clear(ogg_packet *op);
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+
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+
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+#ifdef __cplusplus
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+}
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+#endif
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+
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+#endif /* _OGG_H */
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