git.r.bdr.sh - rbdr/super-polarity/blob - vendor/frameworks/SDL2_mixer.framework/Versions/A/Frameworks/Ogg.framework/Versions/A/Headers/ogg.h

   1 /********************************************************************
   2  *                                                                  *
   3  * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
   4  * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
   5  * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
   6  * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
   7  *                                                                  *
   8  * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007             *
   9  * by the Xiph.Org Foundation http://www.xiph.org/                  *
  10  *                                                                  *
  11  ********************************************************************
  12
  13  function: toplevel libogg include
  14  last mod: $Id: ogg.h 18044 2011-08-01 17:55:20Z gmaxwell $
  15
  16  ********************************************************************/
  17 #ifndef _OGG_H
  18 #define _OGG_H
  19
  20 #ifdef __cplusplus
  21 extern "C" {
  22 #endif
  23
  24 #include <stddef.h>
  25 #include <ogg/os_types.h>
  26
  27 typedef struct {
  28   void *iov_base;
  29   size_t iov_len;
  30 } ogg_iovec_t;
  31
  32 typedef struct {
  33   long endbyte;
  34   int  endbit;
  35
  36   unsigned char *buffer;
  37   unsigned char *ptr;
  38   long storage;
  39 } oggpack_buffer;
  40
  41 /* ogg_page is used to encapsulate the data in one Ogg bitstream page *****/
  42
  43 typedef struct {
  44   unsigned char *header;
  45   long header_len;
  46   unsigned char *body;
  47   long body_len;
  48 } ogg_page;
  49
  50 /* ogg_stream_state contains the current encode/decode state of a logical
  51    Ogg bitstream **********************************************************/
  52
  53 typedef struct {
  54   unsigned char   *body_data;    /* bytes from packet bodies */
  55   long    body_storage;          /* storage elements allocated */
  56   long    body_fill;             /* elements stored; fill mark */
  57   long    body_returned;         /* elements of fill returned */
  58
  59
  60   int     *lacing_vals;      /* The values that will go to the segment table */
  61   ogg_int64_t *granule_vals; /* granulepos values for headers. Not compact
  62                                 this way, but it is simple coupled to the
  63                                 lacing fifo */
  64   long    lacing_storage;
  65   long    lacing_fill;
  66   long    lacing_packet;
  67   long    lacing_returned;
  68
  69   unsigned char    header[282];      /* working space for header encode */
  70   int              header_fill;
  71
  72   int     e_o_s;          /* set when we have buffered the last packet in the
  73                              logical bitstream */
  74   int     b_o_s;          /* set after we've written the initial page
  75                              of a logical bitstream */
  76   long    serialno;
  77   long    pageno;
  78   ogg_int64_t  packetno;  /* sequence number for decode; the framing
  79                              knows where there's a hole in the data,
  80                              but we need coupling so that the codec
  81                              (which is in a separate abstraction
  82                              layer) also knows about the gap */
  83   ogg_int64_t   granulepos;
  84
  85 } ogg_stream_state;
  86
  87 /* ogg_packet is used to encapsulate the data and metadata belonging
  88    to a single raw Ogg/Vorbis packet *************************************/
  89
  90 typedef struct {
  91   unsigned char *packet;
  92   long  bytes;
  93   long  b_o_s;
  94   long  e_o_s;
  95
  96   ogg_int64_t  granulepos;
  97
  98   ogg_int64_t  packetno;     /* sequence number for decode; the framing
  99                                 knows where there's a hole in the data,
 100                                 but we need coupling so that the codec
 101                                 (which is in a separate abstraction
 102                                 layer) also knows about the gap */
 103 } ogg_packet;
 104
 105 typedef struct {
 106   unsigned char *data;
 107   int storage;
 108   int fill;
 109   int returned;
 110
 111   int unsynced;
 112   int headerbytes;
 113   int bodybytes;
 114 } ogg_sync_state;
 115
 116 /* Ogg BITSTREAM PRIMITIVES: bitstream ************************/
 117
 118 extern void  oggpack_writeinit(oggpack_buffer *b);
 119 extern int   oggpack_writecheck(oggpack_buffer *b);
 120 extern void  oggpack_writetrunc(oggpack_buffer *b,long bits);
 121 extern void  oggpack_writealign(oggpack_buffer *b);
 122 extern void  oggpack_writecopy(oggpack_buffer *b,void *source,long bits);
 123 extern void  oggpack_reset(oggpack_buffer *b);
 124 extern void  oggpack_writeclear(oggpack_buffer *b);
 125 extern void  oggpack_readinit(oggpack_buffer *b,unsigned char *buf,int bytes);
 126 extern void  oggpack_write(oggpack_buffer *b,unsigned long value,int bits);
 127 extern long  oggpack_look(oggpack_buffer *b,int bits);
 128 extern long  oggpack_look1(oggpack_buffer *b);
 129 extern void  oggpack_adv(oggpack_buffer *b,int bits);
 130 extern void  oggpack_adv1(oggpack_buffer *b);
 131 extern long  oggpack_read(oggpack_buffer *b,int bits);
 132 extern long  oggpack_read1(oggpack_buffer *b);
 133 extern long  oggpack_bytes(oggpack_buffer *b);
 134 extern long  oggpack_bits(oggpack_buffer *b);
 135 extern unsigned char *oggpack_get_buffer(oggpack_buffer *b);
 136
 137 extern void  oggpackB_writeinit(oggpack_buffer *b);
 138 extern int   oggpackB_writecheck(oggpack_buffer *b);
 139 extern void  oggpackB_writetrunc(oggpack_buffer *b,long bits);
 140 extern void  oggpackB_writealign(oggpack_buffer *b);
 141 extern void  oggpackB_writecopy(oggpack_buffer *b,void *source,long bits);
 142 extern void  oggpackB_reset(oggpack_buffer *b);
 143 extern void  oggpackB_writeclear(oggpack_buffer *b);
 144 extern void  oggpackB_readinit(oggpack_buffer *b,unsigned char *buf,int bytes);
 145 extern void  oggpackB_write(oggpack_buffer *b,unsigned long value,int bits);
 146 extern long  oggpackB_look(oggpack_buffer *b,int bits);
 147 extern long  oggpackB_look1(oggpack_buffer *b);
 148 extern void  oggpackB_adv(oggpack_buffer *b,int bits);
 149 extern void  oggpackB_adv1(oggpack_buffer *b);
 150 extern long  oggpackB_read(oggpack_buffer *b,int bits);
 151 extern long  oggpackB_read1(oggpack_buffer *b);
 152 extern long  oggpackB_bytes(oggpack_buffer *b);
 153 extern long  oggpackB_bits(oggpack_buffer *b);
 154 extern unsigned char *oggpackB_get_buffer(oggpack_buffer *b);
 155
 156 /* Ogg BITSTREAM PRIMITIVES: encoding **************************/
 157
 158 extern int      ogg_stream_packetin(ogg_stream_state *os, ogg_packet *op);
 159 extern int      ogg_stream_iovecin(ogg_stream_state *os, ogg_iovec_t *iov,
 160                                    int count, long e_o_s, ogg_int64_t granulepos);
 161 extern int      ogg_stream_pageout(ogg_stream_state *os, ogg_page *og);
 162 extern int      ogg_stream_pageout_fill(ogg_stream_state *os, ogg_page *og, int nfill);
 163 extern int      ogg_stream_flush(ogg_stream_state *os, ogg_page *og);
 164 extern int      ogg_stream_flush_fill(ogg_stream_state *os, ogg_page *og, int nfill);
 165
 166 /* Ogg BITSTREAM PRIMITIVES: decoding **************************/
 167
 168 extern int      ogg_sync_init(ogg_sync_state *oy);
 169 extern int      ogg_sync_clear(ogg_sync_state *oy);
 170 extern int      ogg_sync_reset(ogg_sync_state *oy);
 171 extern int      ogg_sync_destroy(ogg_sync_state *oy);
 172 extern int      ogg_sync_check(ogg_sync_state *oy);
 173
 174 extern char    *ogg_sync_buffer(ogg_sync_state *oy, long size);
 175 extern int      ogg_sync_wrote(ogg_sync_state *oy, long bytes);
 176 extern long     ogg_sync_pageseek(ogg_sync_state *oy,ogg_page *og);
 177 extern int      ogg_sync_pageout(ogg_sync_state *oy, ogg_page *og);
 178 extern int      ogg_stream_pagein(ogg_stream_state *os, ogg_page *og);
 179 extern int      ogg_stream_packetout(ogg_stream_state *os,ogg_packet *op);
 180 extern int      ogg_stream_packetpeek(ogg_stream_state *os,ogg_packet *op);
 181
 182 /* Ogg BITSTREAM PRIMITIVES: general ***************************/
 183
 184 extern int      ogg_stream_init(ogg_stream_state *os,int serialno);
 185 extern int      ogg_stream_clear(ogg_stream_state *os);
 186 extern int      ogg_stream_reset(ogg_stream_state *os);
 187 extern int      ogg_stream_reset_serialno(ogg_stream_state *os,int serialno);
 188 extern int      ogg_stream_destroy(ogg_stream_state *os);
 189 extern int      ogg_stream_check(ogg_stream_state *os);
 190 extern int      ogg_stream_eos(ogg_stream_state *os);
 191
 192 extern void     ogg_page_checksum_set(ogg_page *og);
 193
 194 extern int      ogg_page_version(const ogg_page *og);
 195 extern int      ogg_page_continued(const ogg_page *og);
 196 extern int      ogg_page_bos(const ogg_page *og);
 197 extern int      ogg_page_eos(const ogg_page *og);
 198 extern ogg_int64_t  ogg_page_granulepos(const ogg_page *og);
 199 extern int      ogg_page_serialno(const ogg_page *og);
 200 extern long     ogg_page_pageno(const ogg_page *og);
 201 extern int      ogg_page_packets(const ogg_page *og);
 202
 203 extern void     ogg_packet_clear(ogg_packet *op);
 204
 205
 206 #ifdef __cplusplus
 207 }
 208 #endif
 209
 210 #endif  /* _OGG_H */