www.pudn.com > Tremor.rar > codec_internal.h

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