| 1 | //driver_ao.c: |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008 |
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| 5 | * |
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| 6 | * This file is part of roard a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * RoarAudio 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 software; see the file COPYING. If not, write to |
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| 21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 22 | * |
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| 23 | */ |
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| 24 | |
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| 25 | #include "roard.h" |
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| 26 | #ifdef ROAR_HAVE_LIBAO |
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| 27 | |
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| 28 | int _driver_ao_usage_counter = 0; |
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| 29 | |
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| 30 | void driver_ao_init (void) { |
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| 31 | if ( _driver_ao_usage_counter++ == 0 ) |
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| 32 | ao_initialize(); |
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| 33 | } |
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| 34 | |
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| 35 | void driver_ao_uninit (void) { |
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| 36 | if ( _driver_ao_usage_counter-- == 1 ) |
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| 37 | ao_shutdown(); |
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| 38 | } |
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| 39 | |
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| 40 | int driver_ao_open_vio(struct roar_vio_calls * inst, char * device, struct roar_audio_info * info, int fh) { |
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| 41 | //int driver_ao_open(DRIVER_USERDATA_T * inst, char * device, struct roar_audio_info * info) { |
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| 42 | ao_device * aodevice; |
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| 43 | ao_sample_format format; |
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| 44 | int driver; |
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| 45 | |
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| 46 | if ( fh != -1 ) |
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| 47 | return -1; |
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| 48 | |
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| 49 | driver_ao_init(); |
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| 50 | |
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| 51 | if ( device == NULL ) { |
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| 52 | driver = ao_default_driver_id(); |
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| 53 | } else { |
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| 54 | if ( (driver = ao_driver_id(device)) == -1 ) { |
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| 55 | ROAR_ERR("Can not open audio device via libao's driver '%s'", device); |
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| 56 | driver_ao_uninit(); |
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| 57 | return -1; |
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| 58 | } |
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| 59 | } |
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| 60 | |
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| 61 | format.bits = info->bits; |
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| 62 | format.channels = info->channels; |
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| 63 | format.rate = info->rate; |
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| 64 | format.byte_format = AO_FMT_NATIVE; |
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| 65 | |
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| 66 | aodevice = ao_open_live(driver, &format, NULL /* no options */); |
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| 67 | |
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| 68 | if ( aodevice == NULL ) { |
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| 69 | ROAR_ERR("Can not open audio device via libao."); |
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| 70 | driver_ao_uninit(); |
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| 71 | return -1; |
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| 72 | } |
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| 73 | |
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| 74 | memset(inst, 0, sizeof(struct roar_vio_calls)); |
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| 75 | inst->inst = (void*) aodevice; |
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| 76 | inst->write = driver_ao_write; |
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| 77 | |
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| 78 | return 0; |
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| 79 | } |
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| 80 | |
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| 81 | int driver_ao_close(DRIVER_USERDATA_T inst) { |
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| 82 | |
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| 83 | ao_close((ao_device*)(((struct roar_vio_calls *)inst)->inst)); |
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| 84 | |
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| 85 | driver_ao_uninit(); |
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| 86 | |
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| 87 | return 0; |
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| 88 | } |
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| 89 | |
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| 90 | ssize_t driver_ao_write(struct roar_vio_calls * vio, void *buf, size_t count) { |
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| 91 | if ( ao_play((ao_device*)(vio->inst), buf, count) == 0 ) |
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| 92 | return -1; |
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| 93 | return count; |
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| 94 | } |
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| 95 | |
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| 96 | #endif |
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| 97 | //ll |
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