| Rev | Line | |
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| [16] | 1 | /******************************************************************** |
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| 2 | * * |
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| 3 | * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. * |
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| 4 | * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * |
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| 5 | * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * |
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| 6 | * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * |
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| 7 | * * |
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| 8 | * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007 * |
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| 9 | * by the Xiph.Org Foundation http://www.xiph.org/ * |
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| 10 | * * |
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| 11 | ******************************************************************** |
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| 12 | |
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| 13 | function: bitrate tracking and management |
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| 14 | last mod: $Id: bitrate.h 13293 2007-07-24 00:09:47Z xiphmont $ |
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| 15 | |
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| 16 | ********************************************************************/ |
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| 17 | |
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| 18 | #ifndef _V_BITRATE_H_ |
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| 19 | #define _V_BITRATE_H_ |
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| 20 | |
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| 21 | #include "vorbis/codec.h" |
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| 22 | #include "codec_internal.h" |
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| 23 | #include "os.h" |
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| 24 | |
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| 25 | /* encode side bitrate tracking */ |
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| 26 | typedef struct bitrate_manager_state { |
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| 27 | int managed; |
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| 28 | |
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| 29 | long avg_reservoir; |
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| 30 | long minmax_reservoir; |
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| 31 | long avg_bitsper; |
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| 32 | long min_bitsper; |
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| 33 | long max_bitsper; |
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| 34 | |
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| 35 | long short_per_long; |
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| 36 | double avgfloat; |
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| 37 | |
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| 38 | vorbis_block *vb; |
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| 39 | int choice; |
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| 40 | } bitrate_manager_state; |
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| 41 | |
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| 42 | typedef struct bitrate_manager_info{ |
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| 43 | long avg_rate; |
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| 44 | long min_rate; |
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| 45 | long max_rate; |
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| 46 | long reservoir_bits; |
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| 47 | double reservoir_bias; |
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| 48 | |
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| 49 | double slew_damp; |
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| 50 | |
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| 51 | } bitrate_manager_info; |
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| 52 | |
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| 53 | extern void vorbis_bitrate_init(vorbis_info *vi,bitrate_manager_state *bs); |
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| 54 | extern void vorbis_bitrate_clear(bitrate_manager_state *bs); |
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| 55 | extern int vorbis_bitrate_managed(vorbis_block *vb); |
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| 56 | extern int vorbis_bitrate_addblock(vorbis_block *vb); |
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| 57 | extern int vorbis_bitrate_flushpacket(vorbis_dsp_state *vd, ogg_packet *op); |
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| 58 | |
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| 59 | #endif |
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