blob: 583775030cfb0a0be925f6262e5e7af62ab0d9a5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
/* ------------------------------------------------------------------
* Copyright (C) 1998-2009 PacketVideo
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied.
* See the License for the specific language governing permissions
* and limitations under the License.
* -------------------------------------------------------------------
*/
/*
Pathname: imdct_fxp.h
------------------------------------------------------------------------------
REVISION HISTORY
Description: This extern had the incorrect length of the arrays. The true
lengths are 128 and 1024, not 64 and 512.
Description: Modified interface so a vector with extended precision is
returned, this is a 32 bit vector whose MSB 16 bits will be
extracted later. Added copyright notice.
Description: Modified function interface to accomodate the normalization
that now is done in this function.
Who: Date:
Description:
------------------------------------------------------------------------------
INCLUDE DESCRIPTION
Header file for function imdct_fxp()
------------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------
; CONTINUE ONLY IF NOT ALREADY DEFINED
----------------------------------------------------------------------------*/
#ifndef IMDCT_FXP_H
#define IMDCT_FXP_H
#ifdef __cplusplus
extern "C"
{
#endif
/*----------------------------------------------------------------------------
; INCLUDES
----------------------------------------------------------------------------*/
#include "pv_audio_type_defs.h"
/*----------------------------------------------------------------------------
; MACROS
; Define module specific macros here
----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------
; DEFINES
; Include all pre-processor statements here.
----------------------------------------------------------------------------*/
#define LONG_WINDOW_TYPE 2048
#define SHORT_WINDOW_TYPE 256
#define ALL_ZEROS_BUFFER 31
/*----------------------------------------------------------------------------
; EXTERNAL VARIABLES REFERENCES
; Declare variables used in this module but defined elsewhere
----------------------------------------------------------------------------*/
extern const Int32 exp_rotation_N_256[64];
extern const Int32 exp_rotation_N_2048[512];
/*
extern const Int exp_rotation_N_256[128];
extern const Int exp_rotation_N_2048[1024];
*/
/*----------------------------------------------------------------------------
; SIMPLE TYPEDEF'S
----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------
; ENUMERATED TYPEDEF'S
----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------
; STRUCTURES TYPEDEF'S
----------------------------------------------------------------------------*/
/*----------------------------------------------------------------------------
; GLOBAL FUNCTION DEFINITIONS
; Function Prototype declaration
----------------------------------------------------------------------------*/
Int imdct_fxp(
Int32 data_quant[],
Int32 freq_2_time_buffer[],
const Int n,
Int Q_format,
Int32 max
);
#ifdef __cplusplus
}
#endif
/*----------------------------------------------------------------------------
; END
----------------------------------------------------------------------------*/
#endif /* IMDCT_FXP_H */
|
