1 /* 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 /****************************************************************** 12 13 iLBC Speech Coder ANSI-C Source Code 14 15 WebRtcIlbcfix_CompCorr.h 16 17 ******************************************************************/ 18 19 #ifndef MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_COMP_CORR_H_ 20 #define MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_COMP_CORR_H_ 21 22 #include "modules/audio_coding/codecs/ilbc/defines.h" 23 24 /*----------------------------------------------------------------* 25 * Compute cross correlation and pitch gain for pitch prediction 26 * of last subframe at given lag. 27 *---------------------------------------------------------------*/ 28 29 void WebRtcIlbcfix_CompCorr(int32_t* corr, /* (o) cross correlation */ 30 int32_t* ener, /* (o) energy */ 31 int16_t* buffer, /* (i) signal buffer */ 32 size_t lag, /* (i) pitch lag */ 33 size_t bLen, /* (i) length of buffer */ 34 size_t sRange, /* (i) correlation search length */ 35 int16_t scale /* (i) number of rightshifts to use */ 36 ); 37 38 #endif 39