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_Enhancer.c
16
17 ******************************************************************/
18
19 #include "defines.h"
20 #include "constants.h"
21 #include "get_sync_seq.h"
22 #include "smooth.h"
23
24 /*----------------------------------------------------------------*
25 * perform enhancement on idata+centerStartPos through
26 * idata+centerStartPos+ENH_BLOCKL-1
27 *---------------------------------------------------------------*/
28
WebRtcIlbcfix_Enhancer(int16_t * odata,int16_t * idata,size_t idatal,size_t centerStartPos,size_t * period,const size_t * plocs,size_t periodl)29 void WebRtcIlbcfix_Enhancer(
30 int16_t *odata, /* (o) smoothed block, dimension blockl */
31 int16_t *idata, /* (i) data buffer used for enhancing */
32 size_t idatal, /* (i) dimension idata */
33 size_t centerStartPos, /* (i) first sample current block within idata */
34 size_t *period, /* (i) pitch period array (pitch bward-in time) */
35 const size_t *plocs, /* (i) locations where period array values valid */
36 size_t periodl /* (i) dimension of period and plocs */
37 ){
38 /* Stack based */
39 int16_t surround[ENH_BLOCKL];
40
41 WebRtcSpl_MemSetW16(surround, 0, ENH_BLOCKL);
42
43 /* get said second sequence of segments */
44
45 WebRtcIlbcfix_GetSyncSeq(idata, idatal, centerStartPos, period, plocs,
46 periodl, ENH_HL, surround);
47
48 /* compute the smoothed output from said second sequence */
49
50 WebRtcIlbcfix_Smooth(odata, idata + centerStartPos, surround);
51 }
52