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