mirror of
https://github.com/godotengine/godot.git
synced 2024-11-27 09:16:35 +08:00
104 lines
3.7 KiB
C
104 lines
3.7 KiB
C
/* Copyright (c) 2011 Xiph.Org Foundation
|
|
Written by Jean-Marc Valin */
|
|
/*
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
- Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
|
|
- Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
|
|
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef ANALYSIS_H
|
|
#define ANALYSIS_H
|
|
|
|
#include "opus/celt/celt.h"
|
|
#include "opus/opus_private.h"
|
|
|
|
#define NB_FRAMES 8
|
|
#define NB_TBANDS 18
|
|
#define NB_TOT_BANDS 21
|
|
#define ANALYSIS_BUF_SIZE 720 /* 15 ms at 48 kHz */
|
|
|
|
#define DETECT_SIZE 200
|
|
|
|
typedef struct {
|
|
int arch;
|
|
#define TONALITY_ANALYSIS_RESET_START angle
|
|
float angle[240];
|
|
float d_angle[240];
|
|
float d2_angle[240];
|
|
opus_val32 inmem[ANALYSIS_BUF_SIZE];
|
|
int mem_fill; /* number of usable samples in the buffer */
|
|
float prev_band_tonality[NB_TBANDS];
|
|
float prev_tonality;
|
|
float E[NB_FRAMES][NB_TBANDS];
|
|
float lowE[NB_TBANDS];
|
|
float highE[NB_TBANDS];
|
|
float meanE[NB_TOT_BANDS];
|
|
float mem[32];
|
|
float cmean[8];
|
|
float std[9];
|
|
float music_prob;
|
|
float Etracker;
|
|
float lowECount;
|
|
int E_count;
|
|
int last_music;
|
|
int last_transition;
|
|
int count;
|
|
float subframe_mem[3];
|
|
int analysis_offset;
|
|
/** Probability of having speech for time i to DETECT_SIZE-1 (and music before).
|
|
pspeech[0] is the probability that all frames in the window are speech. */
|
|
float pspeech[DETECT_SIZE];
|
|
/** Probability of having music for time i to DETECT_SIZE-1 (and speech before).
|
|
pmusic[0] is the probability that all frames in the window are music. */
|
|
float pmusic[DETECT_SIZE];
|
|
float speech_confidence;
|
|
float music_confidence;
|
|
int speech_confidence_count;
|
|
int music_confidence_count;
|
|
int write_pos;
|
|
int read_pos;
|
|
int read_subframe;
|
|
AnalysisInfo info[DETECT_SIZE];
|
|
} TonalityAnalysisState;
|
|
|
|
/** Initialize a TonalityAnalysisState struct.
|
|
*
|
|
* This performs some possibly slow initialization steps which should
|
|
* not be repeated every analysis step. No allocated memory is retained
|
|
* by the state struct, so no cleanup call is required.
|
|
*/
|
|
void tonality_analysis_init(TonalityAnalysisState *analysis);
|
|
|
|
/** Reset a TonalityAnalysisState stuct.
|
|
*
|
|
* Call this when there's a discontinuity in the data.
|
|
*/
|
|
void tonality_analysis_reset(TonalityAnalysisState *analysis);
|
|
|
|
void tonality_get_info(TonalityAnalysisState *tonal, AnalysisInfo *info_out, int len);
|
|
|
|
void run_analysis(TonalityAnalysisState *analysis, const CELTMode *celt_mode, const void *analysis_pcm,
|
|
int analysis_frame_size, int frame_size, int c1, int c2, int C, opus_int32 Fs,
|
|
int lsb_depth, downmix_func downmix, AnalysisInfo *analysis_info);
|
|
|
|
#endif
|