libsoundio/example/sine.c
2015-07-04 02:57:06 -07:00

65 lines
1.8 KiB
C

/*
* Copyright (c) 2015 Andrew Kelley
*
* This file is part of libsoundio, which is MIT licensed.
* See http://opensource.org/licenses/MIT
*/
#include <soundio.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
__attribute__ ((cold))
__attribute__ ((noreturn))
__attribute__ ((format (printf, 1, 2)))
static void panic(const char *format, ...) {
va_list ap;
va_start(ap, format);
vfprintf(stderr, format, ap);
fprintf(stderr, "\n");
va_end(ap);
abort();
}
static void write_callback(struct SoundIoOutputDevice *device, int frame_count) {
fprintf(stderr, "write_callback\n");
}
static void underrun_callback(struct SoundIoOutputDevice *device) {
static int count = 0;
fprintf(stderr, "underrun %d\n", count++);
}
int main(int argc, char **argv) {
struct SoundIo *soundio = soundio_create();
if (!soundio)
panic("out of memory");
int err;
if ((err = soundio_connect(soundio)))
panic("error connecting: %s", soundio_error_string(err));
int default_out_device_index = soundio_get_default_output_device_index(soundio);
if (default_out_device_index < 0)
panic("no output device found");
struct SoundIoDevice *device = soundio_get_output_device(soundio, default_out_device_index);
if (!device)
panic("could not get output device: out of memory");
fprintf(stderr, "Output device: %s: %s\n",
soundio_device_name(device),
soundio_device_description(device));
struct SoundIoOutputDevice *output_device;
soundio_output_device_create(device, SoundIoSampleFormatFloat, 0.1, NULL,
write_callback, underrun_callback, &output_device);
soundio_output_device_destroy(output_device);
soundio_device_unref(device);
soundio_destroy(soundio);
return 0;
}