| 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 https://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 |
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| 15 | ********************************************************************/
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| 16 |
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| 17 | #ifndef _V_BITRATE_H_
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| 18 | #define _V_BITRATE_H_
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| 19 |
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| 20 | #include "vorbis/codec.h"
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| 21 | #include "codec_internal.h"
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| 22 | #include "os.h"
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| 23 |
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| 24 | /* encode side bitrate tracking */
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| 25 | typedef struct bitrate_manager_state {
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| 26 | int managed;
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| 27 |
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| 28 | long avg_reservoir;
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| 29 | long minmax_reservoir;
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| 30 | long avg_bitsper;
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| 31 | long min_bitsper;
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| 32 | long max_bitsper;
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| 33 |
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| 34 | long short_per_long;
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| 35 | double avgfloat;
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| 36 |
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| 37 | vorbis_block *vb;
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| 38 | int choice;
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| 39 | } bitrate_manager_state;
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| 40 |
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| 41 | typedef struct bitrate_manager_info{
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| 42 | long avg_rate;
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| 43 | long min_rate;
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| 44 | long max_rate;
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| 45 | long reservoir_bits;
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| 46 | double reservoir_bias;
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| 47 |
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| 48 | double slew_damp;
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| 49 |
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| 50 | } bitrate_manager_info;
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| 51 |
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| 52 | extern void vorbis_bitrate_init(vorbis_info *vi,bitrate_manager_state *bs);
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| 53 | extern void vorbis_bitrate_clear(bitrate_manager_state *bs);
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| 54 | extern int vorbis_bitrate_managed(vorbis_block *vb);
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| 55 | extern int vorbis_bitrate_addblock(vorbis_block *vb);
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| 56 | extern int vorbis_bitrate_flushpacket(vorbis_dsp_state *vd, ogg_packet *op);
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| 57 |
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| 58 | #endif
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