| /* |
| * 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, |
| 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 /* WEBRTC_MODULES_AUDIO_CODING_CODECS_ISAC_FIX_SOURCE_PITCH_ESTIMATOR_H_ */ |