qaudiooutput.cpp

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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 <qaudiooutput.h>
#include <qaudiodevice.h>
#include <qmediadevices.h>
#include <private/qplatformaudiooutput_p.h>
#include <private/qplatformmediaintegration_p.h>
 
QAudioOutput::QAudioOutput(QObject *parent)
    : QAudioOutput(QMediaDevices::defaultAudioOutput(), parent)
{
}
 
QAudioOutput::QAudioOutput(const QAudioDevice &device, QObject *parent)
    : QObject(parent)
{
    auto maybeAudioOutput = QPlatformMediaIntegration::instance()->createAudioOutput(this);
    if (maybeAudioOutput) {
        d = maybeAudioOutput.value();
        d->device = device.mode() == QAudioDevice::Output ? device : QMediaDevices::defaultAudioOutput();
        d->setAudioDevice(d->device);
    } else {
        d = new QPlatformAudioOutput(nullptr);
        qWarning() << "Failed to initialize QAudioOutput" << maybeAudioOutput.error();
    }
}
 
QAudioOutput::~QAudioOutput()
{
    setDisconnectFunction({});
    delete d;
}
 
float QAudioOutput::volume() const
{
    return d->volume;
}
 
void QAudioOutput::setVolume(float volume)
{
    volume = qBound(0., volume, 1.);
    if (d->volume == volume)
        return;
    d->volume = volume;
    d->setVolume(volume);
    emit volumeChanged(volume);
}
 
bool QAudioOutput::isMuted() const
{
    return d->muted;
}
 
void QAudioOutput::setMuted(bool muted)
{
    if (d->muted == muted)
        return;
    d->muted = muted;
    d->setMuted(muted);
    emit mutedChanged(muted);
}
 
QAudioDevice QAudioOutput::device() const
{
    return d->device;
}
 
void QAudioOutput::setDevice(const QAudioDevice &device)
{
    auto dev = device;
    if (dev.isNull())
        dev = QMediaDevices::defaultAudioOutput();
    if (dev.mode() != QAudioDevice::Output)
        return;
    if (d->device == dev)
        return;
    d->device = dev;
    d->setAudioDevice(dev);
    emit deviceChanged();
}
 
void QAudioOutput::setDisconnectFunction(std::function<void()> disconnectFunction)
{
    if (d->disconnectFunction) {
        auto df = d->disconnectFunction;
        d->disconnectFunction = {};
        df();
    }
    d->disconnectFunction = std::move(disconnectFunction);
}
 
#include "moc_qaudiooutput.cpp"