blob: 994cce7ce94e3edc487bf6c69e0325e9cf21b784 [file] [log] [blame]
/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* pitch_estimator.h
*
* Pitch functions
*
*/
#ifndef MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_PITCH_ESTIMATOR_H_
#define MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_PITCH_ESTIMATOR_H_
#include "modules/audio_coding/codecs/isac/fix/source/structs.h"
void WebRtcIsacfix_PitchAnalysis(const int16_t *in, /* PITCH_FRAME_LEN samples */
int16_t *outQ0, /* PITCH_FRAME_LEN+QLOOKAHEAD samples */
PitchAnalysisStruct *State,
int16_t *lagsQ7,
int16_t *PitchGains_Q12);
void WebRtcIsacfix_InitialPitch(const int16_t *in,
PitchAnalysisStruct *State,
int16_t *qlags);
void WebRtcIsacfix_PitchFilter(int16_t *indatFix,
int16_t *outdatQQ,
PitchFiltstr *pfp,
int16_t *lagsQ7,
int16_t *gainsQ12,
int16_t type);
void WebRtcIsacfix_PitchFilterCore(int loopNumber,
int16_t gain,
size_t index,
int16_t sign,
int16_t* inputState,
int16_t* outputBuff2,
const int16_t* coefficient,
int16_t* inputBuf,
int16_t* outputBuf,
int* index2);
void WebRtcIsacfix_PitchFilterGains(const int16_t *indatQ0,
PitchFiltstr *pfp,
int16_t *lagsQ7,
int16_t *gainsQ12);
void WebRtcIsacfix_DecimateAllpass32(const int16_t *in,
int32_t *state_in, /* array of size: 2*ALLPASSSECTIONS+1 */
int16_t N, /* number of input samples */
int16_t *out); /* array of size N/2 */
int32_t WebRtcIsacfix_Log2Q8( uint32_t x );
void WebRtcIsacfix_PCorr2Q32(const int16_t* in, int32_t* logcorQ8);
#endif /* MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_PITCH_ESTIMATOR_H_ */