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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.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
#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();
foreach (const QString& key, l->keys()) {
QAudioSystemFactoryInterface* plugin = qobject_cast<QAudioSystemFactoryInterface*>(l->instance(key));
if (plugin) {
foreach (QByteArray const& handle, plugin->availableDevices(mode))
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(QLatin1String("default")));
if (plugin) {
QList<QByteArray> list = plugin->availableDevices(QAudio::AudioInput);
if (list.size() > 0)
return QAudioDeviceInfo(QLatin1String("default"), list.at(0), QAudio::AudioInput);
}
#endif
return QAudioDeviceInfo();
}
QAudioDeviceInfo QAudioDeviceFactory::defaultOutputDevice()
{
#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
QAudioSystemFactoryInterface* plugin = qobject_cast<QAudioSystemFactoryInterface*>(audioLoader()->instance(QLatin1String("default")));
if (plugin) {
QList<QByteArray> list = plugin->availableDevices(QAudio::AudioOutput);
if (list.size() > 0)
return QAudioDeviceInfo(QLatin1String("default"), list.at(0), QAudio::AudioOutput);
}
#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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