|
Chris@0
|
1 /*
|
|
Chris@0
|
2 * libmad - MPEG audio decoder library
|
|
Chris@0
|
3 * Copyright (C) 2000-2004 Underbit Technologies, Inc.
|
|
Chris@0
|
4 *
|
|
Chris@0
|
5 * This program is free software; you can redistribute it and/or modify
|
|
Chris@0
|
6 * it under the terms of the GNU General Public License as published by
|
|
Chris@0
|
7 * the Free Software Foundation; either version 2 of the License, or
|
|
Chris@0
|
8 * (at your option) any later version.
|
|
Chris@0
|
9 *
|
|
Chris@0
|
10 * This program is distributed in the hope that it will be useful,
|
|
Chris@0
|
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Chris@0
|
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
Chris@0
|
13 * GNU General Public License for more details.
|
|
Chris@0
|
14 *
|
|
Chris@0
|
15 * You should have received a copy of the GNU General Public License
|
|
Chris@0
|
16 * along with this program; if not, write to the Free Software
|
|
Chris@0
|
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
Chris@0
|
18 *
|
|
Chris@0
|
19 * $Id: synth.h,v 1.15 2004/01/23 09:41:33 rob Exp $
|
|
Chris@0
|
20 */
|
|
Chris@0
|
21
|
|
Chris@0
|
22 # ifndef LIBMAD_SYNTH_H
|
|
Chris@0
|
23 # define LIBMAD_SYNTH_H
|
|
Chris@0
|
24
|
|
Chris@0
|
25 # include "fixed.h"
|
|
Chris@0
|
26 # include "frame.h"
|
|
Chris@0
|
27
|
|
Chris@0
|
28 struct mad_pcm {
|
|
Chris@0
|
29 unsigned int samplerate; /* sampling frequency (Hz) */
|
|
Chris@0
|
30 unsigned short channels; /* number of channels */
|
|
Chris@0
|
31 unsigned short length; /* number of samples per channel */
|
|
Chris@0
|
32 mad_fixed_t samples[2][1152]; /* PCM output samples [ch][sample] */
|
|
Chris@0
|
33 };
|
|
Chris@0
|
34
|
|
Chris@0
|
35 struct mad_synth {
|
|
Chris@0
|
36 mad_fixed_t filter[2][2][2][16][8]; /* polyphase filterbank outputs */
|
|
Chris@0
|
37 /* [ch][eo][peo][s][v] */
|
|
Chris@0
|
38
|
|
Chris@0
|
39 unsigned int phase; /* current processing phase */
|
|
Chris@0
|
40
|
|
Chris@0
|
41 struct mad_pcm pcm; /* PCM output */
|
|
Chris@0
|
42 };
|
|
Chris@0
|
43
|
|
Chris@0
|
44 /* single channel PCM selector */
|
|
Chris@0
|
45 enum {
|
|
Chris@0
|
46 MAD_PCM_CHANNEL_SINGLE = 0
|
|
Chris@0
|
47 };
|
|
Chris@0
|
48
|
|
Chris@0
|
49 /* dual channel PCM selector */
|
|
Chris@0
|
50 enum {
|
|
Chris@0
|
51 MAD_PCM_CHANNEL_DUAL_1 = 0,
|
|
Chris@0
|
52 MAD_PCM_CHANNEL_DUAL_2 = 1
|
|
Chris@0
|
53 };
|
|
Chris@0
|
54
|
|
Chris@0
|
55 /* stereo PCM selector */
|
|
Chris@0
|
56 enum {
|
|
Chris@0
|
57 MAD_PCM_CHANNEL_STEREO_LEFT = 0,
|
|
Chris@0
|
58 MAD_PCM_CHANNEL_STEREO_RIGHT = 1
|
|
Chris@0
|
59 };
|
|
Chris@0
|
60
|
|
Chris@0
|
61 void mad_synth_init(struct mad_synth *);
|
|
Chris@0
|
62
|
|
Chris@0
|
63 # define mad_synth_finish(synth) /* nothing */
|
|
Chris@0
|
64
|
|
Chris@0
|
65 void mad_synth_mute(struct mad_synth *);
|
|
Chris@0
|
66
|
|
Chris@0
|
67 void mad_synth_frame(struct mad_synth *, struct mad_frame const *);
|
|
Chris@0
|
68
|
|
Chris@0
|
69 # endif
|
