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_HpOutput.h
16 
17 ******************************************************************/
18 
19 #ifndef MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_HP_OUTPUT_H_
20 #define MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_HP_OUTPUT_H_
21 
22 #include "defines.h"
23 
24 void WebRtcIlbcfix_HpOutput(
25     int16_t *signal,     /* (i/o) signal vector */
26     int16_t *ba,      /* (i)   B- and A-coefficients (2:nd order)
27                                {b[0] b[1] b[2] -a[1] -a[2]} a[0]
28                                is assumed to be 1.0 */
29     int16_t *y,      /* (i/o) Filter state yhi[n-1] ylow[n-1]
30                               yhi[n-2] ylow[n-2] */
31     int16_t *x,      /* (i/o) Filter state x[n-1] x[n-2] */
32     size_t len);      /* (i)   Number of samples to filter */
33 
34 #endif
35