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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/qdebug.h>
#include "qaudiosystem.h"
#include "qaudiosystemplugin.h"
#include "qmediapluginloader_p.h"
#include "qaudiodevicefactory_p.h"
QT_BEGIN_NAMESPACE
static QString defaultKey()
{
return QStringLiteral("default");
}
#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
Q_GLOBAL_STATIC_WITH_ARGS(QMediaPluginLoader, audioLoader,
(QAudioSystemFactoryInterface_iid, QLatin1String("audio"), Qt::CaseInsensitive))
#endif
class QNullDeviceInfo : public QAbstractAudioDeviceInfo
{
public:
QAudioFormat preferredFormat() const { qWarning()<<"using null deviceinfo, none available"; return QAudioFormat(); }
bool isFormatSupported(const QAudioFormat& ) const { return false; }
QAudioFormat nearestFormat(const QAudioFormat& ) const { return QAudioFormat(); }
QString deviceName() const { return QString(); }
QStringList supportedCodecs() { return QStringList(); }
QList<int> supportedSampleRates() { return QList<int>(); }
QList<int> supportedChannelCounts() { return QList<int>(); }
QList<int> supportedSampleSizes() { return QList<int>(); }
QList<QAudioFormat::Endian> supportedByteOrders() { return QList<QAudioFormat::Endian>(); }
QList<QAudioFormat::SampleType> supportedSampleTypes() { return QList<QAudioFormat::SampleType>(); }
};
class QNullInputDevice : public QAbstractAudioInput
{
public:
void start(QIODevice*) { qWarning()<<"using null input device, none available";}
QIODevice* start() { qWarning()<<"using null input device, none available"; return 0; }
void stop() {}
void reset() {}
void suspend() {}
void resume() {}
int bytesReady() const { return 0; }
int periodSize() const { return 0; }
void setBufferSize(int ) {}
int bufferSize() const { return 0; }
void setNotifyInterval(int ) {}
int notifyInterval() const { return 0; }
qint64 processedUSecs() const { return 0; }
qint64 elapsedUSecs() const { return 0; }
QAudio::Error error() const { return QAudio::OpenError; }
QAudio::State state() const { return QAudio::StoppedState; }
void setFormat(const QAudioFormat&) {}
QAudioFormat format() const { return QAudioFormat(); }
void setVolume(qreal) {}
qreal volume() const {return 1.0f;}
};
class QNullOutputDevice : public QAbstractAudioOutput
{
public:
void start(QIODevice*) {qWarning()<<"using null output device, none available";}
QIODevice* start() { qWarning()<<"using null output device, none available"; return 0; }
void stop() {}
void reset() {}
void suspend() {}
void resume() {}
int bytesFree() const { return 0; }
int periodSize() const { return 0; }
void setBufferSize(int ) {}
int bufferSize() const { return 0; }
void setNotifyInterval(int ) {}
int notifyInterval() const { return 0; }
qint64 processedUSecs() const { return 0; }
qint64 elapsedUSecs() const { return 0; }
QAudio::Error error() const { return QAudio::OpenError; }
QAudio::State state() const { return QAudio::StoppedState; }
void setFormat(const QAudioFormat&) {}
QAudioFormat format() const { return QAudioFormat(); }
};
QList<QAudioDeviceInfo> QAudioDeviceFactory::availableDevices(QAudio::Mode mode)
{
QList<QAudioDeviceInfo> devices;
#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
QMediaPluginLoader* l = audioLoader();
const auto keys = l->keys();
for (const QString& key : keys) {
QAudioSystemFactoryInterface* plugin = qobject_cast<QAudioSystemFactoryInterface*>(l->instance(key));
if (plugin) {
const auto availableDevices = plugin->availableDevices(mode);
for (const QByteArray& handle : availableDevices)
devices << QAudioDeviceInfo(key, handle, mode);
}
}
#endif
return devices;
}
QAudioDeviceInfo QAudioDeviceFactory::defaultInputDevice()
{
#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
QAudioSystemFactoryInterface* plugin = qobject_cast<QAudioSystemFactoryInterface*>(audioLoader()->instance(defaultKey()));
if (plugin) {
QList<QByteArray> list = plugin->availableDevices(QAudio::AudioInput);
if (list.size() > 0)
return QAudioDeviceInfo(defaultKey(), list.at(0), QAudio::AudioInput);
}
// if no plugin is marked as default or if the default plugin doesn't have any input device,
// return the first input available from other plugins.
QList<QAudioDeviceInfo> inputDevices = availableDevices(QAudio::AudioInput);
if (!inputDevices.isEmpty())
return inputDevices.first();
#endif
return QAudioDeviceInfo();
}
QAudioDeviceInfo QAudioDeviceFactory::defaultOutputDevice()
{
#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
QAudioSystemFactoryInterface* plugin = qobject_cast<QAudioSystemFactoryInterface*>(audioLoader()->instance(defaultKey()));
if (plugin) {
QList<QByteArray> list = plugin->availableDevices(QAudio::AudioOutput);
if (list.size() > 0)
return QAudioDeviceInfo(defaultKey(), list.at(0), QAudio::AudioOutput);
}
// if no plugin is marked as default or if the default plugin doesn't have any output device,
// return the first output available from other plugins.
QList<QAudioDeviceInfo> outputDevices = availableDevices(QAudio::AudioOutput);
if (!outputDevices.isEmpty())
return outputDevices.first();
#endif
return QAudioDeviceInfo();
}
QAbstractAudioDeviceInfo* QAudioDeviceFactory::audioDeviceInfo(const QString &realm, const QByteArray &handle, QAudio::Mode mode)
{
QAbstractAudioDeviceInfo *rc = 0;
#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
QAudioSystemFactoryInterface* plugin =
qobject_cast<QAudioSystemFactoryInterface*>(audioLoader()->instance(realm));
if (plugin)
rc = plugin->createDeviceInfo(handle, mode);
#endif
return rc == 0 ? new QNullDeviceInfo() : rc;
}
QAbstractAudioInput* QAudioDeviceFactory::createDefaultInputDevice(QAudioFormat const &format)
{
return createInputDevice(defaultInputDevice(), format);
}
QAbstractAudioOutput* QAudioDeviceFactory::createDefaultOutputDevice(QAudioFormat const &format)
{
return createOutputDevice(defaultOutputDevice(), format);
}
QAbstractAudioInput* QAudioDeviceFactory::createInputDevice(QAudioDeviceInfo const& deviceInfo, QAudioFormat const &format)
{
if (deviceInfo.isNull())
return new QNullInputDevice();
#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
QAudioSystemFactoryInterface* plugin =
qobject_cast<QAudioSystemFactoryInterface*>(audioLoader()->instance(deviceInfo.realm()));
if (plugin) {
QAbstractAudioInput* p = plugin->createInput(deviceInfo.handle());
if (p) p->setFormat(format);
return p;
}
#endif
return new QNullInputDevice();
}
QAbstractAudioOutput* QAudioDeviceFactory::createOutputDevice(QAudioDeviceInfo const& deviceInfo, QAudioFormat const &format)
{
if (deviceInfo.isNull())
return new QNullOutputDevice();
#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
QAudioSystemFactoryInterface* plugin =
qobject_cast<QAudioSystemFactoryInterface*>(audioLoader()->instance(deviceInfo.realm()));
if (plugin) {
QAbstractAudioOutput* p = plugin->createOutput(deviceInfo.handle());
if (p) p->setFormat(format);
return p;
}
#endif
return new QNullOutputDevice();
}
QT_END_NAMESPACE
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