neo/sound/OggVorbis/vorbis/vorbisenc.h

   1 /********************************************************************
   2  *                                                                  *
   3  * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
   4  * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
   5  * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
   6  * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
   7  *                                                                  *
   8  * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2001             *
   9  * by the XIPHOPHORUS Company http://www.xiph.org/                  *
  10  *                                                                  *
  11  ********************************************************************
  12
  13  function: vorbis encode-engine setup
  14  last mod: $Id: vorbisenc.h,v 1.10 2002/07/01 11:20:10 xiphmont Exp $
  15
  16  ********************************************************************/
  17
  18 #ifndef _OV_ENC_H_
  19 #define _OV_ENC_H_
  20
  21 #ifdef __cplusplus
  22 extern "C"
  23 {
  24 #endif /* __cplusplus */
  25
  26 #include "codec.h"
  27
  28 extern int vorbis_encode_init(vorbis_info *vi,
  29                               long channels,
  30                               long rate,
  31
  32                               long max_bitrate,
  33                               long nominal_bitrate,
  34                               long min_bitrate);
  35
  36 extern int vorbis_encode_setup_managed(vorbis_info *vi,
  37                                        long channels,
  38                                        long rate,
  39
  40                                        long max_bitrate,
  41                                        long nominal_bitrate,
  42                                        long min_bitrate);
  43
  44 extern int vorbis_encode_setup_vbr(vorbis_info *vi,
  45                                   long channels,
  46                                   long rate,
  47
  48                                   float /* quality level from 0. (lo) to 1. (hi) */
  49                                   );
  50
  51 extern int vorbis_encode_init_vbr(vorbis_info *vi,
  52                                   long channels,
  53                                   long rate,
  54
  55                                   float base_quality /* quality level from 0. (lo) to 1. (hi) */
  56                                   );
  57
  58 extern int vorbis_encode_setup_init(vorbis_info *vi);
  59
  60 extern int vorbis_encode_ctl(vorbis_info *vi,int number,void *arg);
  61
  62 #define OV_ECTL_RATEMANAGE_GET       0x10
  63
  64 #define OV_ECTL_RATEMANAGE_SET       0x11
  65 #define OV_ECTL_RATEMANAGE_AVG       0x12
  66 #define OV_ECTL_RATEMANAGE_HARD      0x13
  67
  68 #define OV_ECTL_LOWPASS_GET          0x20
  69 #define OV_ECTL_LOWPASS_SET          0x21
  70
  71 #define OV_ECTL_IBLOCK_GET           0x30
  72 #define OV_ECTL_IBLOCK_SET           0x31
  73
  74 struct ovectl_ratemanage_arg {
  75   int    management_active;
  76
  77   long   bitrate_hard_min;
  78   long   bitrate_hard_max;
  79   double bitrate_hard_window;
  80
  81   long   bitrate_av_lo;
  82   long   bitrate_av_hi;
  83   double bitrate_av_window;
  84   double bitrate_av_window_center;
  85 };
  86
  87 #ifdef __cplusplus
  88 }
  89 #endif /* __cplusplus */
  90
  91 #endif
  92
  93