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comparison: media/libvorbis/lib/bitrate.h
media/libvorbis/lib/bitrate.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:544c1a950977 |
|---|---|
| 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 1994-2007 * | |
| 9 * by the Xiph.Org Foundation http://www.xiph.org/ * | |
| 10 * * | |
| 11 ******************************************************************** | |
| 12 | |
| 13 function: bitrate tracking and management | |
| 14 last mod: $Id: bitrate.h 13293 2007-07-24 00:09:47Z xiphmont $ | |
| 15 | |
| 16 ********************************************************************/ | |
| 17 | |
| 18 #ifndef _V_BITRATE_H_ | |
| 19 #define _V_BITRATE_H_ | |
| 20 | |
| 21 #include "vorbis/codec.h" | |
| 22 #include "codec_internal.h" | |
| 23 #include "os.h" | |
| 24 | |
| 25 /* encode side bitrate tracking */ | |
| 26 typedef struct bitrate_manager_state { | |
| 27 int managed; | |
| 28 | |
| 29 long avg_reservoir; | |
| 30 long minmax_reservoir; | |
| 31 long avg_bitsper; | |
| 32 long min_bitsper; | |
| 33 long max_bitsper; | |
| 34 | |
| 35 long short_per_long; | |
| 36 double avgfloat; | |
| 37 | |
| 38 vorbis_block *vb; | |
| 39 int choice; | |
| 40 } bitrate_manager_state; | |
| 41 | |
| 42 typedef struct bitrate_manager_info{ | |
| 43 long avg_rate; | |
| 44 long min_rate; | |
| 45 long max_rate; | |
| 46 long reservoir_bits; | |
| 47 double reservoir_bias; | |
| 48 | |
| 49 double slew_damp; | |
| 50 | |
| 51 } bitrate_manager_info; | |
| 52 | |
| 53 extern void vorbis_bitrate_init(vorbis_info *vi,bitrate_manager_state *bs); | |
| 54 extern void vorbis_bitrate_clear(bitrate_manager_state *bs); | |
| 55 extern int vorbis_bitrate_managed(vorbis_block *vb); | |
| 56 extern int vorbis_bitrate_addblock(vorbis_block *vb); | |
| 57 extern int vorbis_bitrate_flushpacket(vorbis_dsp_state *vd, ogg_packet *op); | |
| 58 | |
| 59 #endif |
