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1/*
2 * a52.h
3 * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
4 * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
5 *
6 * This file is part of a52dec, a free ATSC A-52 stream decoder.
7 * See http://liba52.sourceforge.net/ for updates.
8 *
9 * a52dec is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * a52dec is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23
24#ifndef A52_H
25#define A52_H
26
27#if defined(LIBA52_FIXED)
28typedef int32_t sample_t;
29typedef int32_t level_t;
30#elif defined(LIBA52_DOUBLE)
31typedef double sample_t;
32typedef double level_t;
33#else
34typedef float sample_t;
35typedef float level_t;
36#endif
37
38typedef struct a52_state_s a52_state_t;
39
40#define A52_CHANNEL 0
41#define A52_MONO 1
42#define A52_STEREO 2
43#define A52_3F 3
44#define A52_2F1R 4
45#define A52_3F1R 5
46#define A52_2F2R 6
47#define A52_3F2R 7
48#define A52_CHANNEL1 8
49#define A52_CHANNEL2 9
50#define A52_DOLBY 10
51#define A52_CHANNEL_MASK 15
52
53#define A52_LFE 16
54#define A52_ADJUST_LEVEL 32
55
56a52_state_t * a52_init (uint32_t mm_accel);
57sample_t * a52_samples (a52_state_t * state);
58int a52_syncinfo (uint8_t * buf, int * flags,
59 int * sample_rate, int * bit_rate);
60int a52_frame (a52_state_t * state, uint8_t * buf, int * flags,
61 level_t * level, sample_t bias);
62void a52_dynrng (a52_state_t * state,
63 level_t (* call) (level_t, void *), void * data);
64int a52_block (a52_state_t * state);
65void a52_free (a52_state_t * state);
66
67#endif /* A52_H */