1/* ------------------------------------------------------------------
2 * Copyright (C) 1998-2009 PacketVideo
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
13 * express or implied.
14 * See the License for the specific language governing permissions
15 * and limitations under the License.
16 * -------------------------------------------------------------------
17 */
18/*
19
20 Pathname: ps_channel_filtering.h
21
22------------------------------------------------------------------------------
23 REVISION HISTORY
24
25 Who:                   Date:
26 Description:
27
28------------------------------------------------------------------------------
29 INCLUDE DESCRIPTION
30
31 Header file for functions two_ch_filtering()
32 and  eight_ch_filtering()
33
34------------------------------------------------------------------------------
35*/
36
37/*----------------------------------------------------------------------------
38; CONTINUE ONLY IF NOT ALREADY DEFINED
39----------------------------------------------------------------------------*/
40#ifndef PS_CHANNEL_FILTERING_H
41#define PS_CHANNEL_FILTERING_H
42
43/*----------------------------------------------------------------------------
44; INCLUDES
45----------------------------------------------------------------------------*/
46#include "pv_audio_type_defs.h"
47
48/*----------------------------------------------------------------------------
49; MACROS
50; Define module specific macros here
51----------------------------------------------------------------------------*/
52
53/*----------------------------------------------------------------------------
54; DEFINES
55; Include all pre-processor statements here.
56----------------------------------------------------------------------------*/
57
58/*----------------------------------------------------------------------------
59; EXTERNAL VARIABLES REFERENCES
60; Declare variables used in this module but defined elsewhere
61----------------------------------------------------------------------------*/
62
63/*----------------------------------------------------------------------------
64; SIMPLE TYPEDEF'S
65----------------------------------------------------------------------------*/
66
67/*----------------------------------------------------------------------------
68; ENUMERATED TYPEDEF'S
69----------------------------------------------------------------------------*/
70
71/*----------------------------------------------------------------------------
72; STRUCTURES TYPEDEF'S
73----------------------------------------------------------------------------*/
74
75/*----------------------------------------------------------------------------
76; GLOBAL FUNCTION DEFINITIONS
77; Function Prototype declaration
78----------------------------------------------------------------------------*/
79
80#ifdef __cplusplus
81extern "C"
82{
83#endif
84
85    void two_ch_filtering(const Int32 *pQmf_r,
86    const Int32 *pQmf_i,
87    Int32 *mHybrid_r,
88    Int32 *mHybrid_i);
89
90
91    void eight_ch_filtering(const Int32 *pQmfReal,
92                            const Int32 *pQmfImag,
93                            Int32 *mHybridReal,
94                            Int32 *mHybridImag,
95                            Int32 scratch_mem[]);
96
97#ifdef __cplusplus
98}
99#endif
100
101/*----------------------------------------------------------------------------
102; END
103----------------------------------------------------------------------------*/
104#endif  /* PS_CHANNEL_FILTERING_H */
105