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_XcorrCoef.h
16 
17 ******************************************************************/
18 
19 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_XCORR_COEF_H_
20 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_XCORR_COEF_H_
21 
22 #include "defines.h"
23 
24 /*----------------------------------------------------------------*
25  * cross correlation which finds the optimal lag for the
26  * crossCorr*crossCorr/(energy) criteria
27  *---------------------------------------------------------------*/
28 
29 size_t WebRtcIlbcfix_XcorrCoef(
30     int16_t *target,  /* (i) first array */
31     int16_t *regressor, /* (i) second array */
32     size_t subl,  /* (i) dimension arrays */
33     size_t searchLen, /* (i) the search lenght */
34     size_t offset,  /* (i) samples offset between arrays */
35     int16_t step   /* (i) +1 or -1 */
36                             );
37 
38 #endif
39