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 "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(
30     int32_t *corr, /* (o) cross correlation */
31     int32_t *ener, /* (o) energy */
32     int16_t *buffer, /* (i) signal buffer */
33     size_t lag,  /* (i) pitch lag */
34     size_t bLen, /* (i) length of buffer */
35     size_t sRange, /* (i) correlation search length */
36     int16_t scale /* (i) number of rightshifts to use */
37                             );
38 
39 #endif
40