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/*
* Copyright (c) 2015 Andrew Kelley
*
* This file is part of libsoundio, which is MIT licensed.
* See http://opensource.org/licenses/MIT
*/
#include <soundio/soundio.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <unistd.h>
static enum SoundIoFormat prioritized_formats[] = {
SoundIoFormatFloat32NE,
SoundIoFormatFloat32FE,
SoundIoFormatS32NE,
SoundIoFormatS32FE,
SoundIoFormatS24NE,
SoundIoFormatS24FE,
SoundIoFormatS16NE,
SoundIoFormatS16FE,
SoundIoFormatFloat64NE,
SoundIoFormatFloat64FE,
SoundIoFormatU32NE,
SoundIoFormatU32FE,
SoundIoFormatU24NE,
SoundIoFormatU24FE,
SoundIoFormatU16NE,
SoundIoFormatU16FE,
SoundIoFormatS8,
SoundIoFormatU8,
SoundIoFormatInvalid,
};
__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 int usage(char *exe) {
fprintf(stderr, "Usage: %s [options]\n"
"Options:\n"
" [--backend dummy|alsa|pulseaudio|jack|coreaudio|wasapi]\n"
" [--device id]\n"
" [--raw]\n", exe);
return 1;
}
static struct SoundIo *soundio = NULL;
static float seconds_offset = 0.0f;
static float seconds_end = 9.0f;
static bool caused_underflow = false;
static int overflow_count = 0;
static void read_callback(struct SoundIoInStream *instream, int frame_count_min, int frame_count_max) {
struct SoundIoChannelArea *areas;
float float_sample_rate = instream->sample_rate;
float seconds_per_frame = 1.0f / float_sample_rate;
int err;
if (!caused_underflow && seconds_offset >= 3.0f) {
fprintf(stderr, "OK sleeping...\n");
caused_underflow = true;
sleep(3);
}
if (seconds_offset >= seconds_end) {
soundio_wakeup(soundio);
return;
}
int frames_left = frame_count_max;
for (;;) {
int frame_count = frames_left;
if ((err = soundio_instream_begin_read(instream, &areas, &frame_count)))
panic("begin read error: %s", soundio_strerror(err));
if (!frame_count)
break;
seconds_offset += seconds_per_frame * frame_count;
if ((err = soundio_instream_end_read(instream)))
panic("end read error: %s", soundio_strerror(err));
frames_left -= frame_count;
if (frames_left <= 0)
break;
}
fprintf(stderr, "OK received %d frames\n", frame_count_max);
}
static void overflow_callback(struct SoundIoInStream *instream) {
fprintf(stderr, "OK overflow %d\n", overflow_count++);
}
int main(int argc, char **argv) {
char *exe = argv[0];
enum SoundIoBackend backend = SoundIoBackendNone;
bool is_raw = false;
char *device_id = NULL;
for (int i = 1; i < argc; i += 1) {
char *arg = argv[i];
if (arg[0] == '-' && arg[1] == '-') {
if (strcmp(arg, "--raw") == 0) {
is_raw = true;
} else if (++i >= argc) {
return usage(exe);
} else if (strcmp(arg, "--device") == 0) {
device_id = argv[i];
} else if (strcmp(arg, "--backend") == 0) {
if (strcmp("dummy", argv[i]) == 0) {
backend = SoundIoBackendDummy;
} else if (strcmp("alsa", argv[i]) == 0) {
backend = SoundIoBackendAlsa;
} else if (strcmp("pulseaudio", argv[i]) == 0) {
backend = SoundIoBackendPulseAudio;
} else if (strcmp("jack", argv[i]) == 0) {
backend = SoundIoBackendJack;
} else if (strcmp("coreaudio", argv[i]) == 0) {
backend = SoundIoBackendCoreAudio;
} else if (strcmp("wasapi", argv[i]) == 0) {
backend = SoundIoBackendWasapi;
} else {
fprintf(stderr, "Invalid backend: %s\n", argv[i]);
return 1;
}
} else {
return usage(exe);
}
} else {
return usage(exe);
}
}
fprintf(stderr,
"Records for 3 seconds, sleeps for 3 seconds, then you should see at least\n"
"one buffer overflow message, then records for 3 seconds.\n"
"PulseAudio is not expected to pass this test.\n"
"CoreAudio is not expected to pass this test.\n"
"WASAPI is not expected to pass this test.\n");
if (!(soundio = soundio_create()))
panic("out of memory");
int err = (backend == SoundIoBackendNone) ?
soundio_connect(soundio) : soundio_connect_backend(soundio, backend);
if (err)
panic("error connecting: %s", soundio_strerror(err));
soundio_flush_events(soundio);
int selected_device_index = -1;
if (device_id) {
int device_count = soundio_input_device_count(soundio);
for (int i = 0; i < device_count; i += 1) {
struct SoundIoDevice *device = soundio_get_input_device(soundio, i);
if (strcmp(device->id, device_id) == 0 && device->is_raw == is_raw) {
selected_device_index = i;
break;
}
}
} else {
selected_device_index = soundio_default_input_device_index(soundio);
}
if (selected_device_index < 0) {
fprintf(stderr, "input device not found\n");
return 1;
}
struct SoundIoDevice *device = soundio_get_input_device(soundio, selected_device_index);
if (!device) {
fprintf(stderr, "out of memory\n");
return 1;
}
fprintf(stderr, "Input device: %s\n", device->name);
enum SoundIoFormat *fmt;
for (fmt = prioritized_formats; *fmt != SoundIoFormatInvalid; fmt += 1) {
if (soundio_device_supports_format(device, *fmt))
break;
}
if (*fmt == SoundIoFormatInvalid)
panic("incompatible sample format");
struct SoundIoInStream *instream = soundio_instream_create(device);
instream->format = *fmt;
instream->read_callback = read_callback;
instream->overflow_callback = overflow_callback;
if ((err = soundio_instream_open(instream)))
panic("unable to open device: %s", soundio_strerror(err));
fprintf(stderr, "OK format: %s\n", soundio_format_string(instream->format));
if ((err = soundio_instream_start(instream)))
panic("unable to start device: %s", soundio_strerror(err));
while (seconds_offset < seconds_end)
soundio_wait_events(soundio);
soundio_instream_destroy(instream);
soundio_device_unref(device);
soundio_destroy(soundio);
if (overflow_count > 0) {
fprintf(stderr, "OK test passed with %d overflow callbacks\n", overflow_count);
return 0;
} else {
fprintf(stderr, "FAIL no overflow callbacks received\n");
return 1;
}
}
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