File: codec_internal.h

package info (click to toggle)
libvorbisidec 1.2.1%2Bgit20180316-3
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 848 kB
  • sloc: ansic: 7,783; sh: 120; makefile: 62
file content (92 lines) | stat: -rw-r--r-- 3,084 bytes parent folder | download | duplicates (72)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
/********************************************************************
 *                                                                  *
 * 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 1994-2002    *
 * BY THE Xiph.Org FOUNDATION http://www.xiph.org/                  *
 *                                                                  *
 ********************************************************************

 function: libvorbis codec headers

 ********************************************************************/

#ifndef _V_CODECI_H_
#define _V_CODECI_H_

#include "codebook.h"

typedef void vorbis_look_mapping;
typedef void vorbis_look_floor;
typedef void vorbis_look_residue;
typedef void vorbis_look_transform;

/* mode ************************************************************/
typedef struct {
  int blockflag;
  int windowtype;
  int transformtype;
  int mapping;
} vorbis_info_mode;

typedef void vorbis_info_floor;
typedef void vorbis_info_residue;
typedef void vorbis_info_mapping;

typedef struct private_state {
  /* local lookup storage */
  const void             *window[2];

  /* backend lookups are tied to the mode, not the backend or naked mapping */
  int                     modebits;
  vorbis_look_mapping   **mode;

  ogg_int64_t sample_count;

} private_state;

/* codec_setup_info contains all the setup information specific to the
   specific compression/decompression mode in progress (eg,
   psychoacoustic settings, channel setup, options, codebook
   etc).  
*********************************************************************/

typedef struct codec_setup_info {

  /* Vorbis supports only short and long blocks, but allows the
     encoder to choose the sizes */

  long blocksizes[2];

  /* modes are the primary means of supporting on-the-fly different
     blocksizes, different channel mappings (LR or M/A),
     different residue backends, etc.  Each mode consists of a
     blocksize flag and a mapping (along with the mapping setup */

  int        modes;
  int        maps;
  int        times;
  int        floors;
  int        residues;
  int        books;

  vorbis_info_mode       *mode_param[64];
  int                     map_type[64];
  vorbis_info_mapping    *map_param[64];
  int                     time_type[64];
  int                     floor_type[64];
  vorbis_info_floor      *floor_param[64];
  int                     residue_type[64];
  vorbis_info_residue    *residue_param[64];
  static_codebook        *book_param[256];
  codebook               *fullbooks;

  int    passlimit[32];     /* iteration limit per couple/quant pass */
  int    coupling_passes;
} codec_setup_info;

#endif