michael@0: /********************************************************************
michael@0:  *                                                                  *
michael@0:  * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
michael@0:  * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
michael@0:  * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
michael@0:  * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
michael@0:  *                                                                  *
michael@0:  * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007             *
michael@0:  * by the Xiph.Org Foundation http://www.xiph.org/                  *
michael@0:  *                                                                  *
michael@0:  ********************************************************************
michael@0: 
michael@0:  function: bitrate tracking and management
michael@0:  last mod: $Id: bitrate.h 13293 2007-07-24 00:09:47Z xiphmont $
michael@0: 
michael@0:  ********************************************************************/
michael@0: 
michael@0: #ifndef _V_BITRATE_H_
michael@0: #define _V_BITRATE_H_
michael@0: 
michael@0: #include "vorbis/codec.h"
michael@0: #include "codec_internal.h"
michael@0: #include "os.h"
michael@0: 
michael@0: /* encode side bitrate tracking */
michael@0: typedef struct bitrate_manager_state {
michael@0:   int            managed;
michael@0: 
michael@0:   long           avg_reservoir;
michael@0:   long           minmax_reservoir;
michael@0:   long           avg_bitsper;
michael@0:   long           min_bitsper;
michael@0:   long           max_bitsper;
michael@0: 
michael@0:   long           short_per_long;
michael@0:   double         avgfloat;
michael@0: 
michael@0:   vorbis_block  *vb;
michael@0:   int            choice;
michael@0: } bitrate_manager_state;
michael@0: 
michael@0: typedef struct bitrate_manager_info{
michael@0:   long           avg_rate;
michael@0:   long           min_rate;
michael@0:   long           max_rate;
michael@0:   long           reservoir_bits;
michael@0:   double         reservoir_bias;
michael@0: 
michael@0:   double         slew_damp;
michael@0: 
michael@0: } bitrate_manager_info;
michael@0: 
michael@0: extern void vorbis_bitrate_init(vorbis_info *vi,bitrate_manager_state *bs);
michael@0: extern void vorbis_bitrate_clear(bitrate_manager_state *bs);
michael@0: extern int vorbis_bitrate_managed(vorbis_block *vb);
michael@0: extern int vorbis_bitrate_addblock(vorbis_block *vb);
michael@0: extern int vorbis_bitrate_flushpacket(vorbis_dsp_state *vd, ogg_packet *op);
michael@0: 
michael@0: #endif