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comparison: media/libopus/src/analysis.h
media/libopus/src/analysis.h
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| 1 /* Copyright (c) 2011 Xiph.Org Foundation | |
| 2 Written by Jean-Marc Valin */ | |
| 3 /* | |
| 4 Redistribution and use in source and binary forms, with or without | |
| 5 modification, are permitted provided that the following conditions | |
| 6 are met: | |
| 7 | |
| 8 - Redistributions of source code must retain the above copyright | |
| 9 notice, this list of conditions and the following disclaimer. | |
| 10 | |
| 11 - Redistributions in binary form must reproduce the above copyright | |
| 12 notice, this list of conditions and the following disclaimer in the | |
| 13 documentation and/or other materials provided with the distribution. | |
| 14 | |
| 15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 16 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 17 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 18 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR | |
| 19 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 20 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 21 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 22 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 23 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 24 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 25 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 26 */ | |
| 27 | |
| 28 #ifndef ANALYSIS_H | |
| 29 #define ANALYSIS_H | |
| 30 | |
| 31 #include "celt.h" | |
| 32 #include "opus_private.h" | |
| 33 | |
| 34 #define NB_FRAMES 8 | |
| 35 #define NB_TBANDS 18 | |
| 36 #define NB_TOT_BANDS 21 | |
| 37 #define ANALYSIS_BUF_SIZE 720 /* 15 ms at 48 kHz */ | |
| 38 | |
| 39 #define DETECT_SIZE 200 | |
| 40 | |
| 41 typedef struct { | |
| 42 float angle[240]; | |
| 43 float d_angle[240]; | |
| 44 float d2_angle[240]; | |
| 45 opus_val32 inmem[ANALYSIS_BUF_SIZE]; | |
| 46 int mem_fill; /* number of usable samples in the buffer */ | |
| 47 float prev_band_tonality[NB_TBANDS]; | |
| 48 float prev_tonality; | |
| 49 float E[NB_FRAMES][NB_TBANDS]; | |
| 50 float lowE[NB_TBANDS]; | |
| 51 float highE[NB_TBANDS]; | |
| 52 float meanE[NB_TOT_BANDS]; | |
| 53 float mem[32]; | |
| 54 float cmean[8]; | |
| 55 float std[9]; | |
| 56 float music_prob; | |
| 57 float Etracker; | |
| 58 float lowECount; | |
| 59 int E_count; | |
| 60 int last_music; | |
| 61 int last_transition; | |
| 62 int count; | |
| 63 float subframe_mem[3]; | |
| 64 int analysis_offset; | |
| 65 /** Probability of having speech for time i to DETECT_SIZE-1 (and music before). | |
| 66 pspeech[0] is the probability that all frames in the window are speech. */ | |
| 67 float pspeech[DETECT_SIZE]; | |
| 68 /** Probability of having music for time i to DETECT_SIZE-1 (and speech before). | |
| 69 pmusic[0] is the probability that all frames in the window are music. */ | |
| 70 float pmusic[DETECT_SIZE]; | |
| 71 float speech_confidence; | |
| 72 float music_confidence; | |
| 73 int speech_confidence_count; | |
| 74 int music_confidence_count; | |
| 75 int write_pos; | |
| 76 int read_pos; | |
| 77 int read_subframe; | |
| 78 AnalysisInfo info[DETECT_SIZE]; | |
| 79 } TonalityAnalysisState; | |
| 80 | |
| 81 void tonality_analysis(TonalityAnalysisState *tonal, AnalysisInfo *info, | |
| 82 const CELTMode *celt_mode, const void *x, int len, int offset, int c1, int c2, int C, int lsb_depth, downmix_func downmix); | |
| 83 | |
| 84 void tonality_get_info(TonalityAnalysisState *tonal, AnalysisInfo *info_out, int len); | |
| 85 | |
| 86 void run_analysis(TonalityAnalysisState *analysis, const CELTMode *celt_mode, const void *analysis_pcm, | |
| 87 int analysis_frame_size, int frame_size, int c1, int c2, int C, opus_int32 Fs, | |
| 88 int lsb_depth, downmix_func downmix, AnalysisInfo *analysis_info); | |
| 89 | |
| 90 #endif |
