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-rw-r--r--uisimulator/common/libmad/frame.h117
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diff --git a/uisimulator/common/libmad/frame.h b/uisimulator/common/libmad/frame.h
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--- a/uisimulator/common/libmad/frame.h
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1/*
2 * libmad - MPEG audio decoder library
3 * Copyright (C) 2000-2001 Robert Leslie
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 * $Id$
20 */
21
22# ifndef LIBMAD_FRAME_H
23# define LIBMAD_FRAME_H
24
25# include "fixed.h"
26# include "timer.h"
27# include "stream.h"
28
29enum mad_layer {
30 MAD_LAYER_I = 1, /* Layer I */
31 MAD_LAYER_II = 2, /* Layer II */
32 MAD_LAYER_III = 3 /* Layer III */
33};
34
35enum mad_mode {
36 MAD_MODE_SINGLE_CHANNEL = 0, /* single channel */
37 MAD_MODE_DUAL_CHANNEL = 1, /* dual channel */
38 MAD_MODE_JOINT_STEREO = 2, /* joint (MS/intensity) stereo */
39 MAD_MODE_STEREO = 3 /* normal LR stereo */
40};
41
42enum mad_emphasis {
43 MAD_EMPHASIS_NONE = 0, /* no emphasis */
44 MAD_EMPHASIS_50_15_US = 1, /* 50/15 microseconds emphasis */
45 MAD_EMPHASIS_CCITT_J_17 = 3 /* CCITT J.17 emphasis */
46};
47
48struct mad_header {
49 enum mad_layer layer; /* audio layer (1, 2, or 3) */
50 enum mad_mode mode; /* channel mode (see above) */
51 int mode_extension; /* additional mode info */
52 enum mad_emphasis emphasis; /* de-emphasis to use (see above) */
53
54 unsigned long bitrate; /* stream bitrate (bps) */
55 unsigned int samplerate; /* sampling frequency (Hz) */
56
57 unsigned short crc_check; /* frame CRC accumulator */
58 unsigned short crc_target; /* final target CRC checksum */
59
60 int flags; /* flags (see below) */
61 int private_bits; /* private bits (see below) */
62
63 mad_timer_t duration; /* audio playing time of frame */
64};
65
66struct mad_frame {
67 struct mad_header header; /* MPEG audio header */
68
69 int options; /* decoding options (from stream) */
70
71 mad_fixed_t sbsample[2][36][32]; /* synthesis subband filter samples */
72 mad_fixed_t (*overlap)[2][32][18]; /* Layer III block overlap data */
73};
74
75# define MAD_NCHANNELS(header) ((header)->mode ? 2 : 1)
76# define MAD_NSBSAMPLES(header) \
77 ((header)->layer == MAD_LAYER_I ? 12 : \
78 (((header)->layer == MAD_LAYER_III && \
79 ((header)->flags & MAD_FLAG_LSF_EXT)) ? 18 : 36))
80
81enum {
82 MAD_FLAG_NPRIVATE_III = 0x0007, /* number of Layer III private bits */
83 MAD_FLAG_INCOMPLETE = 0x0008, /* header but not data is decoded */
84
85 MAD_FLAG_PROTECTION = 0x0010, /* frame has CRC protection */
86 MAD_FLAG_COPYRIGHT = 0x0020, /* frame is copyright */
87 MAD_FLAG_ORIGINAL = 0x0040, /* frame is original (else copy) */
88 MAD_FLAG_PADDING = 0x0080, /* frame has additional slot */
89
90 MAD_FLAG_I_STEREO = 0x0100, /* uses intensity joint stereo */
91 MAD_FLAG_MS_STEREO = 0x0200, /* uses middle/side joint stereo */
92 MAD_FLAG_FREEFORMAT = 0x0400, /* uses free format bitrate */
93
94 MAD_FLAG_LSF_EXT = 0x1000, /* lower sampling freq. extension */
95 MAD_FLAG_MC_EXT = 0x2000, /* multichannel audio extension */
96 MAD_FLAG_MPEG_2_5_EXT = 0x4000 /* MPEG 2.5 (unofficial) extension */
97};
98
99enum {
100 MAD_PRIVATE_HEADER = 0x0100, /* header private bit */
101 MAD_PRIVATE_III = 0x001f /* Layer III private bits (up to 5) */
102};
103
104void mad_header_init(struct mad_header *);
105
106# define mad_header_finish(header) /* nothing */
107
108int mad_header_decode(struct mad_header *, struct mad_stream *);
109
110void mad_frame_init(struct mad_frame *);
111void mad_frame_finish(struct mad_frame *);
112
113int mad_frame_decode(struct mad_frame *, struct mad_stream *);
114
115void mad_frame_mute(struct mad_frame *);
116
117# endif