1 | /*
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2 | * audio_out.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 | typedef struct ao_instance_s ao_instance_t;
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25 |
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26 | struct ao_instance_s {
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27 | int (* setup) (ao_instance_t * instance, int sample_rate, int * flags,
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28 | sample_t * level, sample_t * bias);
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29 | int (* play) (ao_instance_t * instance, int flags, sample_t * samples);
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30 | void (* close) (ao_instance_t * instance);
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31 | };
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32 |
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33 | typedef ao_instance_t * ao_open_t (void);
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34 |
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35 | typedef struct ao_driver_s {
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36 | char * name;
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37 | ao_open_t * open;
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38 | } ao_driver_t;
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39 |
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40 | /* return NULL terminated array of all drivers */
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41 | ao_driver_t * ao_drivers (void);
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42 |
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43 | static inline ao_instance_t * ao_open (ao_open_t * open)
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44 | {
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45 | return open ();
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46 | }
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47 |
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48 | static inline int ao_setup (ao_instance_t * instance, int sample_rate,
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49 | int * flags, sample_t * level, sample_t * bias)
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50 | {
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51 | return instance->setup (instance, sample_rate, flags, level, bias);
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52 | }
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53 |
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54 | static inline int ao_play (ao_instance_t * instance, int flags,
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55 | sample_t * samples)
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56 | {
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57 | return instance->play (instance, flags, samples);
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58 | }
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59 |
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60 | static inline void ao_close (ao_instance_t * instance)
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61 | {
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62 | if (instance->close)
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63 | instance->close (instance);
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64 | }
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