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 WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_COMP_CORR_H_
20#define WEBRTC_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
29void WebRtcIlbcfix_CompCorr(
30    int32_t *corr, /* (o) cross correlation */
31    int32_t *ener, /* (o) energy */
32    int16_t *buffer, /* (i) signal buffer */
33    int16_t lag,  /* (i) pitch lag */
34    int16_t bLen, /* (i) length of buffer */
35    int16_t sRange, /* (i) correlation search length */
36    int16_t scale /* (i) number of rightshifts to use */
37                            );
38
39#endif
40