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_Poly2Lsp.h
16 
17 ******************************************************************/
18 
19 #ifndef MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_POLY_TO_LSP_H_
20 #define MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_POLY_TO_LSP_H_
21 
22 #include "modules/audio_coding/codecs/ilbc/defines.h"
23 
24 /*----------------------------------------------------------------*
25  * conversion from lpc coefficients to lsp coefficients
26  * function is only for 10:th order LPC
27  *---------------------------------------------------------------*/
28 
29 void WebRtcIlbcfix_Poly2Lsp(
30     int16_t* a,      /* (o) A coefficients in Q12 */
31     int16_t* lsp,    /* (i) LSP coefficients in Q15 */
32     int16_t* old_lsp /* (i) old LSP coefficients that are used if the new
33                               coefficients turn out to be unstable */
34     );
35 
36 #endif
37