1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libopus/src/analysis.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,90 @@
1.4 +/* Copyright (c) 2011 Xiph.Org Foundation
1.5 + Written by Jean-Marc Valin */
1.6 +/*
1.7 + Redistribution and use in source and binary forms, with or without
1.8 + modification, are permitted provided that the following conditions
1.9 + are met:
1.10 +
1.11 + - Redistributions of source code must retain the above copyright
1.12 + notice, this list of conditions and the following disclaimer.
1.13 +
1.14 + - Redistributions in binary form must reproduce the above copyright
1.15 + notice, this list of conditions and the following disclaimer in the
1.16 + documentation and/or other materials provided with the distribution.
1.17 +
1.18 + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
1.19 + ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
1.20 + LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
1.21 + A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
1.22 + CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
1.23 + EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
1.24 + PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
1.25 + PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
1.26 + LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
1.27 + NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
1.28 + SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.29 +*/
1.30 +
1.31 +#ifndef ANALYSIS_H
1.32 +#define ANALYSIS_H
1.33 +
1.34 +#include "celt.h"
1.35 +#include "opus_private.h"
1.36 +
1.37 +#define NB_FRAMES 8
1.38 +#define NB_TBANDS 18
1.39 +#define NB_TOT_BANDS 21
1.40 +#define ANALYSIS_BUF_SIZE 720 /* 15 ms at 48 kHz */
1.41 +
1.42 +#define DETECT_SIZE 200
1.43 +
1.44 +typedef struct {
1.45 + float angle[240];
1.46 + float d_angle[240];
1.47 + float d2_angle[240];
1.48 + opus_val32 inmem[ANALYSIS_BUF_SIZE];
1.49 + int mem_fill; /* number of usable samples in the buffer */
1.50 + float prev_band_tonality[NB_TBANDS];
1.51 + float prev_tonality;
1.52 + float E[NB_FRAMES][NB_TBANDS];
1.53 + float lowE[NB_TBANDS];
1.54 + float highE[NB_TBANDS];
1.55 + float meanE[NB_TOT_BANDS];
1.56 + float mem[32];
1.57 + float cmean[8];
1.58 + float std[9];
1.59 + float music_prob;
1.60 + float Etracker;
1.61 + float lowECount;
1.62 + int E_count;
1.63 + int last_music;
1.64 + int last_transition;
1.65 + int count;
1.66 + float subframe_mem[3];
1.67 + int analysis_offset;
1.68 + /** Probability of having speech for time i to DETECT_SIZE-1 (and music before).
1.69 + pspeech[0] is the probability that all frames in the window are speech. */
1.70 + float pspeech[DETECT_SIZE];
1.71 + /** Probability of having music for time i to DETECT_SIZE-1 (and speech before).
1.72 + pmusic[0] is the probability that all frames in the window are music. */
1.73 + float pmusic[DETECT_SIZE];
1.74 + float speech_confidence;
1.75 + float music_confidence;
1.76 + int speech_confidence_count;
1.77 + int music_confidence_count;
1.78 + int write_pos;
1.79 + int read_pos;
1.80 + int read_subframe;
1.81 + AnalysisInfo info[DETECT_SIZE];
1.82 +} TonalityAnalysisState;
1.83 +
1.84 +void tonality_analysis(TonalityAnalysisState *tonal, AnalysisInfo *info,
1.85 + const CELTMode *celt_mode, const void *x, int len, int offset, int c1, int c2, int C, int lsb_depth, downmix_func downmix);
1.86 +
1.87 +void tonality_get_info(TonalityAnalysisState *tonal, AnalysisInfo *info_out, int len);
1.88 +
1.89 +void run_analysis(TonalityAnalysisState *analysis, const CELTMode *celt_mode, const void *analysis_pcm,
1.90 + int analysis_frame_size, int frame_size, int c1, int c2, int C, opus_int32 Fs,
1.91 + int lsb_depth, downmix_func downmix, AnalysisInfo *analysis_info);
1.92 +
1.93 +#endif
