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comparison src/libmad-0.15.1b/decoder.h @ 0:c7265573341e

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Import initial set of sources
author Chris Cannam
date Mon, 18 Mar 2013 14:12:14 +0000
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1 /*
2 * libmad - MPEG audio decoder library
3 * Copyright (C) 2000-2004 Underbit Technologies, Inc.
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: decoder.h,v 1.17 2004/01/23 09:41:32 rob Exp $
20 */
21
22 # ifndef LIBMAD_DECODER_H
23 # define LIBMAD_DECODER_H
24
25 # include "stream.h"
26 # include "frame.h"
27 # include "synth.h"
28
29 enum mad_decoder_mode {
30 MAD_DECODER_MODE_SYNC = 0,
31 MAD_DECODER_MODE_ASYNC
32 };
33
34 enum mad_flow {
35 MAD_FLOW_CONTINUE = 0x0000, /* continue normally */
36 MAD_FLOW_STOP = 0x0010, /* stop decoding normally */
37 MAD_FLOW_BREAK = 0x0011, /* stop decoding and signal an error */
38 MAD_FLOW_IGNORE = 0x0020 /* ignore the current frame */
39 };
40
41 struct mad_decoder {
42 enum mad_decoder_mode mode;
43
44 int options;
45
46 struct {
47 long pid;
48 int in;
49 int out;
50 } async;
51
52 struct {
53 struct mad_stream stream;
54 struct mad_frame frame;
55 struct mad_synth synth;
56 } *sync;
57
58 void *cb_data;
59
60 enum mad_flow (*input_func)(void *, struct mad_stream *);
61 enum mad_flow (*header_func)(void *, struct mad_header const *);
62 enum mad_flow (*filter_func)(void *,
63 struct mad_stream const *, struct mad_frame *);
64 enum mad_flow (*output_func)(void *,
65 struct mad_header const *, struct mad_pcm *);
66 enum mad_flow (*error_func)(void *, struct mad_stream *, struct mad_frame *);
67 enum mad_flow (*message_func)(void *, void *, unsigned int *);
68 };
69
70 void mad_decoder_init(struct mad_decoder *, void *,
71 enum mad_flow (*)(void *, struct mad_stream *),
72 enum mad_flow (*)(void *, struct mad_header const *),
73 enum mad_flow (*)(void *,
74 struct mad_stream const *,
75 struct mad_frame *),
76 enum mad_flow (*)(void *,
77 struct mad_header const *,
78 struct mad_pcm *),
79 enum mad_flow (*)(void *,
80 struct mad_stream *,
81 struct mad_frame *),
82 enum mad_flow (*)(void *, void *, unsigned int *));
83 int mad_decoder_finish(struct mad_decoder *);
84
85 # define mad_decoder_options(decoder, opts) \
86 ((void) ((decoder)->options = (opts)))
87
88 int mad_decoder_run(struct mad_decoder *, enum mad_decoder_mode);
89 int mad_decoder_message(struct mad_decoder *, void *, unsigned int *);
90
91 # endif