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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qalsamediadevices_p.h"
#include "qmediadevices.h"
#include "qcameradevice_p.h"
#include "private/qalsaaudiosource_p.h"
#include "private/qalsaaudiosink_p.h"
#include "private/qalsaaudiodevice_p.h"
#include <alsa/asoundlib.h>
QT_BEGIN_NAMESPACE
QAlsaMediaDevices::QAlsaMediaDevices()
: QPlatformMediaDevices()
{
}
static QList<QAudioDevice> availableDevices(QAudioDevice::Mode mode)
{
QList<QAudioDevice> devices;
QByteArray filter;
// Create a list of all current audio devices that support mode
void **hints, **n;
char *name, *descr, *io;
if(snd_device_name_hint(-1, "pcm", &hints) < 0) {
qWarning() << "no alsa devices available";
return devices;
}
n = hints;
if(mode == QAudioDevice::Input) {
filter = "Input";
} else {
filter = "Output";
}
while (*n != NULL) {
name = snd_device_name_get_hint(*n, "NAME");
if (name != 0 && qstrcmp(name, "null") != 0) {
descr = snd_device_name_get_hint(*n, "DESC");
io = snd_device_name_get_hint(*n, "IOID");
if ((descr != NULL) && ((io == NULL) || (io == filter))) {
auto *infop = new QAlsaAudioDeviceInfo(name, QString::fromUtf8(descr), mode);
devices.append(infop->create());
if (strcmp(name, "default") == 0)
infop->isDefault = true;
}
free(descr);
free(io);
}
free(name);
++n;
}
snd_device_name_free_hint(hints);
return devices;
}
QList<QAudioDevice> QAlsaMediaDevices::audioInputs() const
{
return availableDevices(QAudioDevice::Input);
}
QList<QAudioDevice> QAlsaMediaDevices::audioOutputs() const
{
return availableDevices(QAudioDevice::Output);
}
QPlatformAudioSource *QAlsaMediaDevices::createAudioSource(const QAudioDevice &deviceInfo,
QObject *parent)
{
return new QAlsaAudioSource(deviceInfo.id(), parent);
}
QPlatformAudioSink *QAlsaMediaDevices::createAudioSink(const QAudioDevice &deviceInfo,
QObject *parent)
{
return new QAlsaAudioSink(deviceInfo.id(), parent);
}
QT_END_NAMESPACE
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