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9564 | turbocat | 1 | /******************************************************************** |
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 | |||
13 | function: bitrate tracking and management |
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14 | |||
15 | ********************************************************************/ |
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16 | |||
17 | #ifndef _V_BITRATE_H_ |
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18 | #define _V_BITRATE_H_ |
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19 | |||
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 | |||
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 | |||
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 | |||
34 | long short_per_long; |
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35 | double avgfloat; |
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36 | |||
37 | vorbis_block *vb; |
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38 | int choice; |
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39 | } bitrate_manager_state; |
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40 | |||
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 | |||
48 | double slew_damp; |
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49 | |||
50 | } bitrate_manager_info; |
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51 | |||
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 | |||
58 | #endif |