/*
 *  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.
 */

/******************************************************************

 iLBC Speech Coder ANSI-C Source Code

 WebRtcIlbcfix_CompCorr.h

******************************************************************/

#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_COMP_CORR_H_
#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_COMP_CORR_H_

#include "defines.h"

/*----------------------------------------------------------------*
 *  Compute cross correlation and pitch gain for pitch prediction
 *  of last subframe at given lag.
 *---------------------------------------------------------------*/

void WebRtcIlbcfix_CompCorr(
    int32_t *corr, /* (o) cross correlation */
    int32_t *ener, /* (o) energy */
    int16_t *buffer, /* (i) signal buffer */
    size_t lag,  /* (i) pitch lag */
    size_t bLen, /* (i) length of buffer */
    size_t sRange, /* (i) correlation search length */
    int16_t scale /* (i) number of rightshifts to use */
                            );

#endif