Introduction of fake radio backend to enable testing the radio APIs

Includes some behavior for all standard methods.
Also fixes a typo in qradiotunercontrol.h and a couple of minor
bugs in the radio example that came to light using this new
backend.

Change-Id: I65b8b8715a46f0fd702f9630ea81f7d5df527055
Reviewed-on: http://codereview.qt.nokia.com/3619
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Dmytro Poplavskiy <dmytro.poplavskiy@nokia.com>
Reviewed-by: Michael Goddard <michael.goddard@nokia.com>

examples/radio/radio.cpp

@@ -45,8 +45,6 @@
 Radio::Radio()
 {
     radio = new QRadioTuner;
-    connect(radio,SIGNAL(frequencyChanged(int)),this,SLOT(freqChanged(int)));
-    connect(radio,SIGNAL(signalStrengthChanged(int)),this,SLOT(signalChanged(int)));
     connect(radio, SIGNAL(error(QRadioTuner::Error)), this, SLOT(error(QRadioTuner::Error)));
 
     if(radio->isBandSupported(QRadioTuner::FM))
@@ -62,6 +60,7 @@ Radio::Radio()
     freq = new QLabel;
     freq->setText(QString("%1 kHz").arg(radio->frequency()/1000));
     topBar->addWidget(freq);
+    connect(radio,SIGNAL(frequencyChanged(int)),this,SLOT(freqChanged(int)));
 
     signal = new QLabel;
     if (radio->isAvailable())
@@ -69,6 +68,8 @@ Radio::Radio()
     else
         signal->setText(tr("No radio found"));
     topBar->addWidget(signal);
+    connect(radio,SIGNAL(signalStrengthChanged(int)),this,SLOT(signalChanged(int)));
+
     volumeSlider = new QSlider(Qt::Vertical,this);
     volumeSlider->setRange(0,100);
     volumeSlider->setValue(50);

src/multimediakit/qradiotunercontrol.h

@@ -97,7 +97,7 @@ Q_SIGNALS:
     void bandChanged(QRadioTuner::Band band);
     void frequencyChanged(int frequency);
     void stereoStatusChanged(bool stereo);
-    void searchingChanged(bool stereo);
+    void searchingChanged(bool searching);
     void signalStrengthChanged(int signalStrength);
     void volumeChanged(int volume);
     void mutedChanged(bool muted);

src/plugins/fakeradio/fakeradio.pro

@@ -0,0 +1,23 @@
+load(qt_module)
+
+TARGET = qtmedia_fakeradio
+QT += multimediakit-private
+PLUGIN_TYPE = mediaservice
+
+load(qt_plugin)
+DESTDIR = $$QT.multimediakit.plugins/$${PLUGIN_TYPE}
+
+HEADERS += \
+  fakeradioserviceplugin.h \
+  fakeradioservice.h \
+  fakeradiotunercontrol.h
+
+SOURCES += \
+  fakeradioserviceplugin.cpp \
+  fakeradioservice.cpp \
+  fakeradiotunercontrol.cpp
+
+
+target.path += $$[QT_INSTALL_PLUGINS]/$${PLUGIN_TYPE}
+INSTALLS += target
+

src/plugins/fakeradio/fakeradioservice.cpp

@@ -0,0 +1,71 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/qvariant.h>
+#include <QtCore/qdebug.h>
+#include <QtCore/qfile.h>
+#include <QtGui/qwidget.h>
+
+#include "fakeradioservice.h"
+#include "fakeradiotunercontrol.h"
+
+FakeRadioService::FakeRadioService(QObject *parent):
+    QMediaService(parent)
+{
+    m_control = new FakeRadioTunerControl(this);
+}
+
+FakeRadioService::~FakeRadioService()
+{
+}
+
+QMediaControl *FakeRadioService::requestControl(const char* name)
+{
+    if (qstrcmp(name,QRadioTunerControl_iid) == 0)
+        return m_control;
+
+    return 0;
+}
+
+
+void FakeRadioService::releaseControl(QMediaControl *)
+{
+}

src/plugins/fakeradio/fakeradioservice.h

@@ -0,0 +1,67 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef FAKERADIOSERVICE_H
+#define FAKERADIOSERVICE_H
+
+#include <QtCore/qobject.h>
+
+#include <qmediaservice.h>
+QT_USE_NAMESPACE
+
+class FakeRadioTunerControl;
+
+class FakeRadioService : public QMediaService
+{
+    Q_OBJECT
+
+public:
+    FakeRadioService(QObject *parent = 0);
+    ~FakeRadioService();
+
+    QMediaControl *requestControl(const char* name);
+    void releaseControl(QMediaControl *);
+
+private:
+    FakeRadioTunerControl *m_control;
+};
+
+#endif // FAKERADIOSERVICE_H

src/plugins/fakeradio/fakeradioserviceplugin.cpp

@@ -0,0 +1,84 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/qstring.h>
+#include <QtCore/qfile.h>
+#include <QtCore/qdebug.h>
+#include <QtCore/qdir.h>
+
+#include "fakeradioserviceplugin.h"
+#include "fakeradioservice.h"
+
+#include <qmediaserviceprovider.h>
+
+
+QStringList FakeRadioServicePlugin::keys() const
+{
+    return QStringList() <<
+            QLatin1String(Q_MEDIASERVICE_RADIO);
+}
+
+QMediaService* FakeRadioServicePlugin::create(QString const& key)
+{
+    if (key == QLatin1String(Q_MEDIASERVICE_RADIO))
+        return new FakeRadioService;
+
+    return 0;
+}
+
+void FakeRadioServicePlugin::release(QMediaService *service)
+{
+    delete service;
+}
+
+QList<QByteArray> FakeRadioServicePlugin::devices(const QByteArray &service) const
+{
+    return QList<QByteArray>();
+}
+
+QString FakeRadioServicePlugin::deviceDescription(const QByteArray &service, const QByteArray &device)
+{
+    return QString();
+}
+
+
+Q_EXPORT_PLUGIN2(qtmedia_fakeradio, FakeRadioServicePlugin);
+

src/plugins/fakeradio/fakeradioserviceplugin.h

@@ -0,0 +1,63 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#ifndef FAKERADIOSERVICEPLUGIN_H
+#define FAKERADIOSERVICEPLUGIN_H
+
+#include <qmediaserviceproviderplugin.h>
+
+QT_USE_NAMESPACE
+
+class FakeRadioServicePlugin : public QMediaServiceProviderPlugin, public QMediaServiceSupportedDevicesInterface
+{
+    Q_OBJECT
+    Q_INTERFACES(QMediaServiceSupportedDevicesInterface)
+public:
+    QStringList keys() const;
+    QMediaService* create(QString const& key);
+    void release(QMediaService *service);
+
+    QList<QByteArray> devices(const QByteArray &service) const;
+    QString deviceDescription(const QByteArray &service, const QByteArray &device);
+};
+
+#endif // FAKERADIOSERVICEPLUGIN_H

src/plugins/fakeradio/fakeradiotunercontrol.cpp

@@ -0,0 +1,335 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "fakeradiotunercontrol.h"
+#include "fakeradioservice.h"
+
+#include <QtCore/qdebug.h>
+
+FakeRadioTunerControl::FakeRadioTunerControl(QObject *parent)
+    :QRadioTunerControl(parent)
+{
+    m_state = QRadioTuner::StoppedState;
+    m_freqMin = 520000;
+    m_freqMax = 108000000;
+    m_currentBand = QRadioTuner::FM;
+    m_currentFreq = 0;
+    m_stereo = true;
+    m_stereoMode = QRadioTuner::Auto;
+    m_signalStrength = 0;
+    m_volume = 50;
+    m_muted = false;
+
+    m_searching = false;
+    m_forward = true;
+    m_searchTimer = new QTimer(this);
+    m_searchTimer->setSingleShot(true);
+    connect(m_searchTimer, SIGNAL(timeout()), this, SLOT(searchEnded()));
+
+    QTimer::singleShot(300, this, SLOT(delayedInit()));
+
+    qsrand(QTime::currentTime().msec());
+}
+
+FakeRadioTunerControl::~FakeRadioTunerControl()
+{
+    m_searchTimer->stop();
+}
+
+bool FakeRadioTunerControl::isAvailable() const
+{
+    return true;
+}
+
+QtMultimediaKit::AvailabilityError FakeRadioTunerControl::availabilityError() const
+{
+    return QtMultimediaKit::NoError;
+}
+
+QRadioTuner::State FakeRadioTunerControl::state() const
+{
+    return m_state;
+}
+
+QRadioTuner::Band FakeRadioTunerControl::band() const
+{
+    return m_currentBand;
+}
+
+bool FakeRadioTunerControl::isBandSupported(QRadioTuner::Band b) const
+{
+    switch (b) {
+        case QRadioTuner::FM:
+            if (m_freqMin <= 87500000 && m_freqMax >= 108000000)
+                return true;
+            break;
+        case QRadioTuner::LW:
+            if (m_freqMin <= 148500 && m_freqMax >= 283500)
+                return true;
+        case QRadioTuner::AM:
+            if (m_freqMin <= 520000 && m_freqMax >= 1610000)
+                return true;
+        default:
+            if (m_freqMin <= 1711000 && m_freqMax >= 30000000)
+                return true;
+    }
+
+    return false;
+}
+
+void FakeRadioTunerControl::setBand(QRadioTuner::Band b)
+{
+    if (isBandSupported(b)) {
+        m_currentBand = b;
+        emit bandChanged(m_currentBand);
+
+        int f = m_currentFreq;
+        QPair<int, int> fRange = frequencyRange(m_currentBand);
+
+        if (f < fRange.first)
+            f = fRange.first;
+        if (f > fRange.second)
+            f = fRange.second;
+
+        if (f != m_currentFreq) {
+            m_currentFreq = f;
+            emit frequencyChanged(m_currentFreq);
+        }
+    }
+}
+
+int FakeRadioTunerControl::frequency() const
+{
+    return m_currentFreq;
+}
+
+int FakeRadioTunerControl::frequencyStep(QRadioTuner::Band b) const
+{
+    int step = 0;
+
+    if (b == QRadioTuner::FM)
+        step = 100000; // 100kHz steps
+    else if (b == QRadioTuner::LW)
+        step = 1000; // 1kHz steps
+    else if (b == QRadioTuner::AM)
+        step = 1000; // 1kHz steps
+    else if (b == QRadioTuner::SW)
+        step = 500; // 500Hz steps
+
+    return step;
+}
+
+QPair<int,int> FakeRadioTunerControl::frequencyRange(QRadioTuner::Band b) const
+{
+    if (b == QRadioTuner::FM)
+        return qMakePair<int,int>(87500000,108000000);
+    else if (b == QRadioTuner::LW)
+        return qMakePair<int,int>(148500,283500);
+    else if (b == QRadioTuner::AM)
+        return qMakePair<int,int>(520000,1710000);
+    else if (b == QRadioTuner::SW)
+        return qMakePair<int,int>(1711111,30000000);
+
+    return qMakePair<int,int>(0,0);
+}
+
+void FakeRadioTunerControl::setFrequency(int frequency)
+{
+    qint64 f = frequency;
+    QPair<int, int> fRange = frequencyRange(m_currentBand);
+
+    if (frequency < fRange.first)
+        f = fRange.first;
+    if (frequency > fRange.second)
+        f = fRange.second;
+
+    m_currentFreq = f;
+    emit frequencyChanged(m_currentFreq);
+}
+
+bool FakeRadioTunerControl::isStereo() const
+{
+    return m_stereo;
+}
+
+QRadioTuner::StereoMode FakeRadioTunerControl::stereoMode() const
+{
+    return m_stereoMode;
+}
+
+void FakeRadioTunerControl::setStereoMode(QRadioTuner::StereoMode mode)
+{
+    bool stereo = true;
+
+    if (mode == QRadioTuner::ForceMono)
+        stereo = false;
+    else
+        stereo = true;
+
+    m_stereo = stereo;
+    m_stereoMode = mode;
+
+    emit stereoStatusChanged(stereo);
+}
+
+int FakeRadioTunerControl::signalStrength() const
+{
+    return m_signalStrength;
+}
+
+int FakeRadioTunerControl::volume() const
+{
+    return m_volume;
+}
+
+void FakeRadioTunerControl::setVolume(int volume)
+{
+    int v = volume;
+
+    if (v < 0)
+        v = 0;
+    if (100 > v)
+        v = 100;
+
+    m_volume = v;
+}
+
+bool FakeRadioTunerControl::isMuted() const
+{
+    return m_muted;
+}
+
+void FakeRadioTunerControl::setMuted(bool muted)
+{
+    if (muted != m_muted) {
+        m_muted = muted;
+        emit mutedChanged(m_muted);
+    }
+}
+
+bool FakeRadioTunerControl::isSearching() const
+{
+    return m_searching;
+}
+
+void FakeRadioTunerControl::cancelSearch()
+{
+    m_searching = false;
+    m_searchTimer->stop();
+    emit searchingChanged(m_searching);
+}
+
+void FakeRadioTunerControl::searchForward()
+{
+    m_forward = true;
+    performSearch();
+}
+
+void FakeRadioTunerControl::searchBackward()
+{
+    m_forward = false;
+    performSearch();
+}
+
+void FakeRadioTunerControl::start()
+{
+    if (isAvailable() && m_state != QRadioTuner::ActiveState) {
+        m_state = QRadioTuner::ActiveState;
+        emit stateChanged(m_state);
+    }
+}
+
+void FakeRadioTunerControl::stop()
+{
+    if (m_state != QRadioTuner::StoppedState) {
+        m_state = QRadioTuner::StoppedState;
+        emit stateChanged(m_state);
+    }
+}
+
+QRadioTuner::Error FakeRadioTunerControl::error() const
+{
+    return QRadioTuner::NoError;
+}
+
+QString FakeRadioTunerControl::errorString() const
+{
+    return QString();
+}
+
+void FakeRadioTunerControl::delayedInit()
+{
+    m_signalStrength = 50;
+    emit signalStrengthChanged(m_signalStrength);
+}
+
+void FakeRadioTunerControl::performSearch()
+{
+    m_searching = true;
+    m_searchTimer->start(qrand() % 1000);
+    emit searchingChanged(m_searching);
+}
+
+void FakeRadioTunerControl::searchEnded()
+{
+    int minFreq, maxFreq, newFreq;
+    QPair<int, int> fRange = frequencyRange(m_currentBand);
+
+    if (m_forward) {
+        minFreq = m_currentFreq;
+        maxFreq = fRange.second;
+    } else {
+        minFreq = fRange.first;
+        maxFreq = m_currentFreq;
+    }
+
+    if ((qreal)(maxFreq - minFreq) / (qreal)(fRange.second - fRange.first) < 0.02) { // don't want to do anything if we have less than 2% of the range to move
+        return;
+    }
+
+    newFreq = (qrand() % (maxFreq - minFreq)) + minFreq;
+    newFreq -= newFreq % frequencyStep(m_currentBand);
+
+    m_searching = false;
+    m_currentFreq = newFreq;
+    emit searchingChanged(m_searching);
+    emit frequencyChanged(m_currentFreq);
+}

src/plugins/fakeradio/fakeradiotunercontrol.h

@@ -0,0 +1,123 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef FAKERADIOTUNERCONTROL_H
+#define FAKERADIOTUNERCONTROL_H
+
+#include <QtCore/qobject.h>
+#include <QtCore/qtimer.h>
+#include <QtCore/qdatetime.h>
+
+#include <qradiotunercontrol.h>
+
+QT_USE_NAMESPACE
+
+class FakeRadioService;
+
+class FakeRadioTunerControl : public QRadioTunerControl
+{
+    Q_OBJECT
+public:
+    FakeRadioTunerControl(QObject *parent = 0);
+    ~FakeRadioTunerControl();
+
+    bool isAvailable() const;
+    QtMultimediaKit::AvailabilityError availabilityError() const;
+
+    QRadioTuner::State state() const;
+
+    QRadioTuner::Band band() const;
+    void setBand(QRadioTuner::Band b);
+    bool isBandSupported(QRadioTuner::Band b) const;
+
+    int frequency() const;
+    int frequencyStep(QRadioTuner::Band b) const;
+    QPair<int,int> frequencyRange(QRadioTuner::Band b) const;
+    void setFrequency(int frequency);
+
+    bool isStereo() const;
+    QRadioTuner::StereoMode stereoMode() const;
+    void setStereoMode(QRadioTuner::StereoMode mode);
+
+    int signalStrength() const;
+
+    int volume() const;
+    void setVolume(int volume);
+
+    bool isMuted() const;
+    void setMuted(bool muted);
+
+    bool isSearching() const;
+    void cancelSearch();
+
+    void searchForward();
+    void searchBackward();
+
+    void start();
+    void stop();
+
+    QRadioTuner::Error error() const;
+    QString errorString() const;
+
+private slots:
+    void delayedInit();
+    void performSearch();
+    void searchEnded();
+
+private: //data
+    QRadioTuner::State  m_state;
+    QRadioTuner::Band   m_currentBand;
+    qint64 m_freqMin;
+    qint64 m_freqMax;
+    qint64 m_currentFreq;
+    bool m_stereo;
+    QRadioTuner::StereoMode m_stereoMode;
+    int m_signalStrength;
+    int m_volume;
+    bool m_muted;
+
+    // searching
+    bool m_searching;
+    bool m_forward;
+    QTimer *m_searchTimer;
+};
+
+#endif // FAKERADIOTUNERCONTROL_H

src/plugins/plugins.pro

@@ -33,7 +33,8 @@ unix:!mac {
         SUBDIRS += audiocapture
     }
 
-    !maemo*:SUBDIRS += v4l
+    # v4l is turned off because it is not supported in Qt 5
+    # !maemo*:SUBDIRS += v4l
 
     contains(config_test_pulseaudio, yes) {
         SUBDIRS += pulseaudio
@@ -44,3 +45,7 @@ mac:!simulator {
     SUBDIRS += audiocapture
     !qpa: SUBDIRS += qt7
 }
+
+# fake radio to test the radio APIs
+SUBDIRS += fakeradio
+