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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