misc/libtremor/codec_internal.h
author sheepluva
Fri, 21 Oct 2011 19:17:08 +0200
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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 1994-2002    *
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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: libvorbis codec headers
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 ********************************************************************/
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#ifndef _V_CODECI_H_
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#define _V_CODECI_H_
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#include "codebook.h"
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typedef void vorbis_look_mapping;
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typedef void vorbis_look_floor;
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typedef void vorbis_look_residue;
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typedef void vorbis_look_transform;
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/* mode ************************************************************/
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typedef struct {
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  int blockflag;
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  int windowtype;
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  int transformtype;
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  int mapping;
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} vorbis_info_mode;
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typedef void vorbis_info_floor;
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typedef void vorbis_info_residue;
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typedef void vorbis_info_mapping;
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typedef struct private_state {
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  /* local lookup storage */
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  const void             *window[2];
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  /* backend lookups are tied to the mode, not the backend or naked mapping */
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  int                     modebits;
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  vorbis_look_mapping   **mode;
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  ogg_int64_t sample_count;
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} private_state;
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/* codec_setup_info contains all the setup information specific to the
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   specific compression/decompression mode in progress (eg,
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   psychoacoustic settings, channel setup, options, codebook
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   etc).  
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*********************************************************************/
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typedef struct codec_setup_info {
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  /* Vorbis supports only short and long blocks, but allows the
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     encoder to choose the sizes */
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  long blocksizes[2];
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  /* modes are the primary means of supporting on-the-fly different
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     blocksizes, different channel mappings (LR or M/A),
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     different residue backends, etc.  Each mode consists of a
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     blocksize flag and a mapping (along with the mapping setup */
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  int        modes;
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  int        maps;
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  int        times;
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  int        floors;
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  int        residues;
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  int        books;
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  vorbis_info_mode       *mode_param[64];
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  int                     map_type[64];
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  vorbis_info_mapping    *map_param[64];
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  int                     time_type[64];
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  int                     floor_type[64];
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  vorbis_info_floor      *floor_param[64];
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  int                     residue_type[64];
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  vorbis_info_residue    *residue_param[64];
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  static_codebook        *book_param[256];
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  codebook               *fullbooks;
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  int    passlimit[32];     /* iteration limit per couple/quant pass */
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  int    coupling_passes;
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} codec_setup_info;
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#endif