include/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 1.9 2002/06/30 08:45:03 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 struct ovectl_ratemanage_arg {
  69   int    management_active;
  70
  71   long   bitrate_hard_min;
  72   long   bitrate_hard_max;
  73   double bitrate_hard_window;
  74
  75   long   bitrate_av_lo;
  76   long   bitrate_av_hi;
  77   double bitrate_av_window;
  78   double bitrate_av_window_center;
  79 };
  80
  81 #ifdef __cplusplus
  82 }
  83 #endif /* __cplusplus */
  84
  85 #endif
  86
  87