1 /********************************************************************

     2  *                                                                  *

     3  * THIS FILE IS PART OF THE OggVorbis 'TREMOR' CODEC SOURCE CODE.   *

     4  *                                                                  *

     5  * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *

     6  * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *

     7  * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *

     8  *                                                                  *

     9  * THE OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002    *

    10  * BY THE Xiph.Org FOUNDATION http://www.xiph.org/                  *

    11  *                                                                  *

    12  ********************************************************************

    13 

    14  function: libvorbis codec headers

    15 

    16  ********************************************************************/

    17 

    18 #ifndef _V_CODECI_H_

    19 #define _V_CODECI_H_

    20 

    21 #include "codebook.h"

    22 

    23 typedef void vorbis_look_mapping;

    24 typedef void vorbis_look_floor;

    25 typedef void vorbis_look_residue;

    26 typedef void vorbis_look_transform;

    27 

    28 /* mode ************************************************************/

    29 typedef struct {

    30   int blockflag;

    31   int windowtype;

    32   int transformtype;

    33   int mapping;

    34 } vorbis_info_mode;

    35 

    36 typedef void vorbis_info_floor;

    37 typedef void vorbis_info_residue;

    38 typedef void vorbis_info_mapping;

    39 

    40 typedef struct private_state {

    41   /* local lookup storage */

    42   const void             *window[2];

    43 

    44   /* backend lookups are tied to the mode, not the backend or naked mapping */

    45   int                     modebits;

    46   vorbis_look_mapping   **mode;

    47 

    48   ogg_int64_t sample_count;

    49 

    50 } private_state;

    51 

    52 /* codec_setup_info contains all the setup information specific to the

    53    specific compression/decompression mode in progress (eg,

    54    psychoacoustic settings, channel setup, options, codebook

    55    etc).  

    56 *********************************************************************/

    57 

    58 typedef struct codec_setup_info {

    59 

    60   /* Vorbis supports only short and long blocks, but allows the

    61      encoder to choose the sizes */

    62 

    63   long blocksizes[2];

    64 

    65   /* modes are the primary means of supporting on-the-fly different

    66      blocksizes, different channel mappings (LR or M/A),

    67      different residue backends, etc.  Each mode consists of a

    68      blocksize flag and a mapping (along with the mapping setup */

    69 

    70   int        modes;

    71   int        maps;

    72   int        times;

    73   int        floors;

    74   int        residues;

    75   int        books;

    76 

    77   vorbis_info_mode       *mode_param[64];

    78   int                     map_type[64];

    79   vorbis_info_mapping    *map_param[64];

    80   int                     time_type[64];

    81   int                     floor_type[64];

    82   vorbis_info_floor      *floor_param[64];

    83   int                     residue_type[64];

    84   vorbis_info_residue    *residue_param[64];

    85   static_codebook        *book_param[256];

    86   codebook               *fullbooks;

    87 

    88   int    passlimit[32];     /* iteration limit per couple/quant pass */

    89   int    coupling_passes;

    90 } codec_setup_info;

    91 

    92 #endif