| 1 | //driver_oss.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 | #if defined(ROAR_HAVE_OSS_BSD) || defined(ROAR_HAVE_OSS) |
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| 27 | |
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| 28 | #define er() close(fh); return -1 |
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| 29 | |
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| 30 | int driver_oss_open(struct roar_vio_calls * inst, char * device, struct roar_audio_info * info) { |
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| 31 | int tmp; |
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| 32 | int fh; |
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| 33 | |
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| 34 | if ( device == NULL ) |
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| 35 | device = ROAR_DEFAULT_OSS_DEV; |
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| 36 | |
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| 37 | roar_vio_init_calls(inst); |
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| 38 | |
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| 39 | if ( (fh = open(device, O_WRONLY, 0644)) == -1 ) { |
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| 40 | ROAR_ERR("driver_oss_open(*): Can not open OSS device: %s: %s", device, strerror(errno)); |
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| 41 | return -1; |
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| 42 | } |
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| 43 | |
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| 44 | roar_vio_set_fh(inst, fh); |
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| 45 | |
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| 46 | switch (info->channels) { |
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| 47 | case 1: tmp = 0; break; |
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| 48 | case 2: tmp = 1; break; |
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| 49 | default: er(); |
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| 50 | } |
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| 51 | |
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| 52 | if ( ioctl(fh, SNDCTL_DSP_STEREO, &tmp) == -1 ) { |
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| 53 | er(); |
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| 54 | } |
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| 55 | |
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| 56 | switch (info->bits) { |
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| 57 | case 8: tmp = AFMT_S8; break; |
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| 58 | case 16: |
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| 59 | switch (info->codec) { |
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| 60 | case ROAR_CODEC_PCM_S_LE: tmp = AFMT_S16_LE; break; |
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| 61 | case ROAR_CODEC_PCM_S_BE: tmp = AFMT_S16_BE; break; |
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| 62 | default : er(); |
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| 63 | } |
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| 64 | break; |
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| 65 | default: er(); |
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| 66 | } |
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| 67 | |
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| 68 | if ( ioctl(fh, SNDCTL_DSP_SAMPLESIZE, &tmp) == -1 ) { |
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| 69 | er(); |
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| 70 | } |
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| 71 | |
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| 72 | tmp = info->rate; |
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| 73 | |
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| 74 | if ( ioctl(fh, SNDCTL_DSP_SPEED, &tmp) == -1 ) { |
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| 75 | er(); |
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| 76 | } |
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| 77 | |
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| 78 | if ( tmp < info->rate * 0.98 || tmp > info->rate * 1.02 ) { |
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| 79 | er(); |
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| 80 | } |
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| 81 | |
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| 82 | return 0; |
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| 83 | } |
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| 84 | |
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| 85 | int driver_oss_close(DRIVER_USERDATA_T inst) { |
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| 86 | return close(roar_vio_get_fh((struct roar_vio_calls *)inst)); |
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| 87 | } |
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| 88 | |
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| 89 | |
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| 90 | #endif |
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| 91 | //ll |
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