1 /*
2 * libao output module for wavbreaker
3 * Copyright (C) 2015 Thomas Perl
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20 #include <stdio.h>
21 #include <string.h>
22
23 #include <ao/ao.h>
24
25 #include "wavbreaker.h"
26 #include "aoaudio.h"
27
28
29 static ao_device *device;
30
ao_audio_close_device()31 void ao_audio_close_device()
32 {
33 if (device) {
34 ao_close(device);
35 device = NULL;
36
37 ao_shutdown();
38 }
39 }
40
ao_audio_write(unsigned char * devbuf,int size)41 int ao_audio_write(unsigned char *devbuf, int size)
42 {
43 if (device) {
44 if (ao_play(device, (char *)devbuf, size) == 0) {
45 fprintf(stderr, "Error in ao_play()\n");
46 return -1;
47 }
48 return 0;
49 }
50
51 return -1;
52 }
53
ao_audio_open_device(SampleInfo * sampleInfo)54 int ao_audio_open_device(SampleInfo *sampleInfo)
55 {
56 int default_driver;
57 ao_sample_format format;
58
59 ao_initialize();
60
61 default_driver = ao_default_driver_id();
62 memset(&format, 0, sizeof(format));
63 format.bits = sampleInfo->bitsPerSample;
64 format.channels = sampleInfo->channels;
65 format.rate = sampleInfo->samplesPerSec;
66 format.byte_format = AO_FMT_LITTLE;
67
68 sampleInfo->bufferSize = DEFAULT_BUF_SIZE;
69
70 device = ao_open_live(default_driver, &format, NULL);
71
72 if (device == NULL) {
73 fprintf(stderr, "Cannot open default libao device\n");
74 return -1;
75 }
76
77 return 0;
78 }
79