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/*
* 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 WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_PITCH_ESTIMATOR_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_PITCH_ESTIMATOR_H_
#include "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,
int 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 */
#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_PITCH_ESTIMATOR_H_ */
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