| 1 | /*
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| 2 | * a52.h
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| 3 | * Copyright (C) 2000-2002 Michel Lespinasse <[email protected]>
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| 4 | * Copyright (C) 1999-2000 Aaron Holtzman <[email protected]>
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| 5 | *
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| 6 | * This file is part of a52dec, a free ATSC A-52 stream decoder.
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| 7 | * See http://liba52.sourceforge.net/ for updates.
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| 8 | *
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| 9 | * a52dec is free software; you can redistribute it and/or modify
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| 10 | * it under the terms of the GNU General Public License as published by
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| 11 | * the Free Software Foundation; either version 2 of the License, or
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| 12 | * (at your option) any later version.
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| 13 | *
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| 14 | * a52dec is distributed in the hope that it will be useful,
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 17 | * GNU General Public License for more details.
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| 18 | *
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| 19 | * You should have received a copy of the GNU General Public License
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| 20 | * along with this program; if not, write to the Free Software
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| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 22 | */
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| 23 |
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| 24 | #ifndef A52_H
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| 25 | #define A52_H
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| 26 |
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| 27 | #ifndef LIBA52_DOUBLE
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| 28 | typedef float sample_t;
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| 29 | #else
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| 30 | typedef double sample_t;
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| 31 | #endif
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| 32 |
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| 33 | typedef struct a52_state_s a52_state_t;
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| 34 |
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| 35 | #define A52_CHANNEL 0
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| 36 | #define A52_MONO 1
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| 37 | #define A52_STEREO 2
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| 38 | #define A52_3F 3
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| 39 | #define A52_2F1R 4
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| 40 | #define A52_3F1R 5
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| 41 | #define A52_2F2R 6
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| 42 | #define A52_3F2R 7
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| 43 | #define A52_CHANNEL1 8
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| 44 | #define A52_CHANNEL2 9
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| 45 | #define A52_DOLBY 10
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| 46 | #define A52_CHANNEL_MASK 15
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| 47 |
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| 48 | #define A52_LFE 16
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| 49 | #define A52_ADJUST_LEVEL 32
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| 50 |
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| 51 | a52_state_t * a52_init (uint32_t mm_accel);
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| 52 | sample_t * a52_samples (a52_state_t * state);
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| 53 | int a52_syncinfo (uint8_t * buf, int * flags,
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| 54 | int * sample_rate, int * bit_rate);
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| 55 | int a52_frame (a52_state_t * state, uint8_t * buf, int * flags,
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| 56 | sample_t * level, sample_t bias);
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| 57 | void a52_dynrng (a52_state_t * state,
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| 58 | sample_t (* call) (sample_t, void *), void * data);
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| 59 | int a52_block (a52_state_t * state);
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| 60 | void a52_free (a52_state_t * state);
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| 61 |
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| 62 | #endif /* A52_H */
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