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_Smooth_odata.c
16
17******************************************************************/
18
19#include "defines.h"
20#include "constants.h"
21
22int32_t WebRtcIlbcfix_Smooth_odata(
23    int16_t *odata,
24    int16_t *psseq,
25    int16_t *surround,
26    int16_t C)
27{
28  int i;
29
30  int16_t err;
31  int32_t errs;
32
33  for(i=0;i<80;i++) {
34    odata[i]= (int16_t)WEBRTC_SPL_RSHIFT_W32(
35        (WEBRTC_SPL_MUL_16_16(C, surround[i])+1024), 11);
36  }
37
38  errs=0;
39  for(i=0;i<80;i++) {
40    err=(int16_t)WEBRTC_SPL_RSHIFT_W16((psseq[i]-odata[i]), 3);
41    errs+=WEBRTC_SPL_MUL_16_16(err, err); /* errs in Q-6 */
42  }
43
44  return errs;
45}
46