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   PacketVideo Corp.
21   MP3 Decoder Library
22
23   Filename: pvmp3_dec_defs.h
24
25     Date: 09/21/2007
26
27------------------------------------------------------------------------------
28 REVISION HISTORY
29
30 Description:
31
32------------------------------------------------------------------------------
33 INCLUDE DESCRIPTION
34
35 This include file has the mp3 decoder common defines.
36
37------------------------------------------------------------------------------
38*/
39
40/*----------------------------------------------------------------------------
41; CONTINUE ONLY IF NOT ALREADY DEFINED
42----------------------------------------------------------------------------*/
43#ifndef PVMP3_DEC_DEFS_H
44#define PVMP3_DEC_DEFS_H
45
46/*----------------------------------------------------------------------------
47; INCLUDES
48----------------------------------------------------------------------------*/
49#include "pvmp3_audio_type_defs.h"
50#include "pvmp3decoder_api.h"
51
52/*----------------------------------------------------------------------------
53; MACROS
54; Define module specific macros here
55----------------------------------------------------------------------------*/
56#define module(x, POW2)   ((x)&((POW2)-1))
57
58/*----------------------------------------------------------------------------
59; DEFINES
60; Include all pre-processor statements here.
61----------------------------------------------------------------------------*/
62#define BUFSIZE   8192   // big enough to hold 4608 bytes == biggest mp3 frame
63
64#define CHAN           2
65#define GRAN           2
66
67
68#define SUBBANDS_NUMBER        32
69#define FILTERBANK_BANDS       18
70#define HAN_SIZE              512
71
72
73/* MPEG Header Definitions - ID Bit Values */
74
75#define MPEG_1              0
76#define MPEG_2              1
77#define MPEG_2_5            2
78#define INVALID_VERSION   (-1)
79
80/* MPEG Header Definitions - Mode Values */
81
82#define MPG_MD_STEREO           0
83#define MPG_MD_JOINT_STEREO     1
84#define MPG_MD_DUAL_CHANNEL     2
85#define MPG_MD_MONO             3
86
87
88
89#define LEFT        0
90#define RIGHT       1
91
92
93#define SYNC_WORD         (int32)0x7ff
94#define SYNC_WORD_LNGTH   11
95
96/*----------------------------------------------------------------------------
97; EXTERNAL VARIABLES REFERENCES
98; Declare variables used in this module but defined elsewhere
99----------------------------------------------------------------------------*/
100
101/*----------------------------------------------------------------------------
102; SIMPLE TYPEDEF'S
103----------------------------------------------------------------------------*/
104
105/*----------------------------------------------------------------------------
106; ENUMERATED TYPEDEF'S
107----------------------------------------------------------------------------*/
108#ifdef __cplusplus
109extern "C"
110{
111#endif
112
113    /*----------------------------------------------------------------------------
114    ; STRUCTURES TYPEDEF'S
115    ----------------------------------------------------------------------------*/
116
117    /* Header Information Structure */
118
119    typedef struct
120    {
121        int32 version_x;
122        int32 layer_description;
123        int32 error_protection;
124        int32 bitrate_index;
125        int32 sampling_frequency;
126        int32 padding;
127        int32 extension;
128        int32 mode;
129        int32 mode_ext;
130        int32 copyright;
131        int32 original;
132        int32 emphasis;
133    } mp3Header;
134
135
136    /* Layer III side information. */
137
138    typedef  struct
139    {
140        uint32 part2_3_length;
141        uint32 big_values;
142        int32 global_gain;
143        uint32 scalefac_compress;
144        uint32 window_switching_flag;
145        uint32 block_type;
146        uint32 mixed_block_flag;
147        uint32 table_select[3];
148        uint32 subblock_gain[3];
149        uint32 region0_count;
150        uint32 region1_count;
151        uint32 preflag;
152        uint32 scalefac_scale;
153        uint32 count1table_select;
154
155    } granuleInfo;
156
157    typedef  struct
158    {
159        uint32      scfsi[4];
160        granuleInfo gran[2];
161
162    } channelInfo;
163
164    /* Layer III side info. */
165
166    typedef struct
167    {
168        uint32      main_data_begin;
169        uint32      private_bits;
170        channelInfo ch[2];
171
172    } mp3SideInfo;
173
174    /* Layer III scale factors. */
175    typedef struct
176    {
177        int32 l[23];            /* [cb] */
178        int32 s[3][13];         /* [window][cb] */
179
180    } mp3ScaleFactors;
181
182
183#ifdef __cplusplus
184}
185#endif
186
187/*----------------------------------------------------------------------------
188; GLOBAL FUNCTION DEFINITIONS
189; Function Prototype declaration
190----------------------------------------------------------------------------*/
191
192/*----------------------------------------------------------------------------
193; END
194----------------------------------------------------------------------------*/
195
196#endif
197
198
199
200