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_IndexConvDec.c
16
17******************************************************************/
18
19#include "defines.h"
20
21void WebRtcIlbcfix_IndexConvDec(
22    int16_t *index   /* (i/o) Codebook indexes */
23                                ){
24  int k;
25
26  for (k=4;k<6;k++) {
27    /* Readjust the second and third codebook index for the first 40 sample
28       so that they look the same as the first (in terms of lag)
29    */
30    if ((index[k]>=44)&&(index[k]<108)) {
31      index[k]+=64;
32    } else if ((index[k]>=108)&&(index[k]<128)) {
33      index[k]+=128;
34    } else {
35      /* ERROR */
36    }
37  }
38}
39