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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 WebRtc_Word16 *in, /* PITCH_FRAME_LEN samples */
WebRtc_Word16 *outQ0, /* PITCH_FRAME_LEN+QLOOKAHEAD samples */
PitchAnalysisStruct *State,
WebRtc_Word16 *lagsQ7,
WebRtc_Word16 *PitchGains_Q12);
void WebRtcIsacfix_InitialPitch(const WebRtc_Word16 *in,
PitchAnalysisStruct *State,
WebRtc_Word16 *qlags);
void WebRtcIsacfix_PitchFilter(WebRtc_Word16 *indatFix,
WebRtc_Word16 *outdatQQ,
PitchFiltstr *pfp,
WebRtc_Word16 *lagsQ7,
WebRtc_Word16 *gainsQ12,
WebRtc_Word16 type);
void WebRtcIsacfix_PitchFilterCore(int loopNumber,
WebRtc_Word16 gain,
int index,
WebRtc_Word16 sign,
WebRtc_Word16* inputState,
WebRtc_Word16* outputBuff2,
const WebRtc_Word16* coefficient,
WebRtc_Word16* inputBuf,
WebRtc_Word16* outputBuf,
int* index2);
void WebRtcIsacfix_PitchFilterGains(const WebRtc_Word16 *indatQ0,
PitchFiltstr *pfp,
WebRtc_Word16 *lagsQ7,
WebRtc_Word16 *gainsQ12);
void WebRtcIsacfix_DecimateAllpass32(const WebRtc_Word16 *in,
WebRtc_Word32 *state_in, /* array of size: 2*ALLPASSSECTIONS+1 */
WebRtc_Word16 N, /* number of input samples */
WebRtc_Word16 *out); /* array of size N/2 */
#endif /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_PITCH_ESTIMATOR_H_ */
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