1/*
2 *  This extra small demo sends a random samples to your speakers.
3 */
4
5#include "../include/asoundlib.h"
6
7static char *device = "default";			/* playback device */
8
9snd_output_t *output = NULL;
10unsigned char buffer[16*1024];				/* some random data */
11
12int main(void)
13{
14        int err;
15        unsigned int i;
16        snd_pcm_t *handle;
17        snd_pcm_sframes_t frames;
18
19        for (i = 0; i < sizeof(buffer); i++)
20                buffer[i] = random() & 0xff;
21
22	if ((err = snd_pcm_open(&handle, device, SND_PCM_STREAM_PLAYBACK, 0)) < 0) {
23		printf("Playback open error: %s\n", snd_strerror(err));
24		exit(EXIT_FAILURE);
25	}
26	if ((err = snd_pcm_set_params(handle,
27	                              SND_PCM_FORMAT_U8,
28	                              SND_PCM_ACCESS_RW_INTERLEAVED,
29	                              1,
30	                              48000,
31	                              1,
32	                              500000)) < 0) {	/* 0.5sec */
33		printf("Playback open error: %s\n", snd_strerror(err));
34		exit(EXIT_FAILURE);
35	}
36
37        for (i = 0; i < 16; i++) {
38                frames = snd_pcm_writei(handle, buffer, sizeof(buffer));
39                if (frames < 0)
40                        frames = snd_pcm_recover(handle, frames, 0);
41                if (frames < 0) {
42                        printf("snd_pcm_writei failed: %s\n", snd_strerror(err));
43                        break;
44                }
45                if (frames > 0 && frames < (long)sizeof(buffer))
46                        printf("Short write (expected %li, wrote %li)\n", (long)sizeof(buffer), frames);
47        }
48
49	snd_pcm_close(handle);
50	return 0;
51}
52