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_HpInput.h
16
17******************************************************************/
18
19#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_HP_INPUT_H_
20#define WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_HP_INPUT_H_
21
22#include "defines.h"
23
24void WebRtcIlbcfix_HpInput(
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    int16_t len);     /* (i)   Number of samples to filter */
33
34#endif
35