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_LsfInterpolate2PloyEnc.h
16 
17 ******************************************************************/
18 
19 #ifndef MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_LSF_INTERPOLATE_TO_POLY_ENC_H_
20 #define MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_LSF_INTERPOLATE_TO_POLY_ENC_H_
21 
22 #include "defines.h"
23 
24 /*----------------------------------------------------------------*
25  *  lsf interpolator and conversion from lsf to a coefficients
26  *  (subrutine to SimpleInterpolateLSF)
27  *---------------------------------------------------------------*/
28 
29 void WebRtcIlbcfix_LsfInterpolate2PloyEnc(
30     int16_t *a,  /* (o) lpc coefficients Q12 */
31     int16_t *lsf1, /* (i) first set of lsf coefficients Q13 */
32     int16_t *lsf2, /* (i) second set of lsf coefficients Q13 */
33     int16_t coef, /* (i) weighting coefficient to use between
34                            lsf1 and lsf2 Q14 */
35     int16_t length /* (i) length of coefficient vectors */
36                                           );
37 
38 #endif
39