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 22 int32_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
