| /* |
| * Copyright (c) 2011 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_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_ */ |