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