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_Lsp2Lsf.h
16 
17 ******************************************************************/
18 
19 #ifndef MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_LSP_TO_LSF_H_
20 #define MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_LSP_TO_LSF_H_
21 
22 #include "defines.h"
23 
24 /*----------------------------------------------------------------*
25  *  conversion from LSP coefficients to LSF coefficients
26  *---------------------------------------------------------------*/
27 
28 void WebRtcIlbcfix_Lsp2Lsf(
29     int16_t *lsp, /* (i) lsp vector -1...+1 in Q15 */
30     int16_t *lsf, /* (o) Lsf vector 0...Pi in Q13
31                            (ordered, so that lsf[i]<lsf[i+1]) */
32     int16_t m  /* (i) Number of coefficients */
33                            );
34 
35 #endif
36