highlevel.h

OGG文件格式音频数解压缩SDK.现在OGG文件格式在一些游戏开发中使用的比较多.

/********************************************************************
 *                                                                  *
 * THIS FILE IS PART OF THE OggVorbis SOFTWARE 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 SOURCE CODE IS (C) COPYRIGHT 1994-2002             *
 * by the XIPHOPHORUS Company http://www.xiph.org/                  *
 *                                                                  *
 ********************************************************************

 function: highlevel encoder setup struct seperated out for vorbisenc clarity
 last mod: $Id: highlevel.h,v 1.4 2002/07/01 11:20:11 xiphmont Exp $

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

typedef struct highlevel_byblocktype {
  float tone_mask_setting;
  float tone_peaklimit_setting;
  float noise_bias_setting;
  float noise_compand_setting;
} highlevel_byblocktype;
  
typedef struct highlevel_encode_setup {
  void *setup;
  int   set_in_stone;

  float base_setting;
  float long_setting;
  float short_setting;
  float impulse_noisetune;

  int    managed;
  ogg_int32_t   bitrate_min;
  ogg_int32_t   bitrate_av_lo;
  ogg_int32_t   bitrate_av_hi;
  ogg_int32_t   bitrate_max;
  float bitrate_limit_window;
  float bitrate_av_window;
  float bitrate_av_window_center;
  
  int impulse_block_p;
  int noise_normalize_p;

  float stereo_point_setting;
  float lowpass_kHz;

  float ath_floating_dB;
  float ath_absolute_dB;

  float amplitude_track_dBpersec;
  float trigger_setting;
  
  highlevel_byblocktype block[4]; /* padding, impulse, transition, ogg_int32_t */

} highlevel_encode_setup;