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 WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_POLY_TO_LSP_H_
20#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_POLY_TO_LSP_H_
21
22#include "defines.h"
23
24/*----------------------------------------------------------------*
25 * conversion from lpc coefficients to lsp coefficients
26 * function is only for 10:th order LPC
27 *---------------------------------------------------------------*/
28
29void 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