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60 lines
2 KiB
C
60 lines
2 KiB
C
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/********************************************************************
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* *
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* THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
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* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
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* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
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* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
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* *
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* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007 *
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* by the Xiph.Org Foundation http://www.xiph.org/ *
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* *
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********************************************************************
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function: bitrate tracking and management
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last mod: $Id: bitrate.h 13293 2007-07-24 00:09:47Z xiphmont $
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********************************************************************/
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#ifndef _V_BITRATE_H_
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#define _V_BITRATE_H_
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#include "vorbis/codec.h"
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#include "codec_internal.h"
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#include "os.h"
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/* encode side bitrate tracking */
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typedef struct bitrate_manager_state {
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int managed;
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long avg_reservoir;
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long minmax_reservoir;
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long avg_bitsper;
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long min_bitsper;
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long max_bitsper;
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long short_per_long;
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double avgfloat;
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vorbis_block *vb;
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int choice;
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} bitrate_manager_state;
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typedef struct bitrate_manager_info{
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long avg_rate;
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long min_rate;
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long max_rate;
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long reservoir_bits;
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double reservoir_bias;
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double slew_damp;
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} bitrate_manager_info;
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extern void vorbis_bitrate_init(vorbis_info *vi,bitrate_manager_state *bs);
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extern void vorbis_bitrate_clear(bitrate_manager_state *bs);
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extern int vorbis_bitrate_managed(vorbis_block *vb);
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extern int vorbis_bitrate_addblock(vorbis_block *vb);
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extern int vorbis_bitrate_flushpacket(vorbis_dsp_state *vd, ogg_packet *op);
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#endif
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