multimedia: modernize by using nullptr

Change-Id: Id1084fec084b972aaa1d2389ee56ee831a821172
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Reviewed-by: VaL Doroshchuk <valentyn.doroshchuk@qt.io>

48 files changed, 294 insertions, 294 deletions

diff --git a/src/multimedia/audio/qaudiobuffer.cpp b/src/multimedia/audio/qaudiobuffer.cpp
index 849d79ab3..f3e7ae670 100644
--- a/src/multimedia/audio/qaudiobuffer.cpp
+++ b/src/multimedia/audio/qaudiobuffer.cpp
@@ -85,7 +85,7 @@ public:
     static QAudioBufferPrivate *acquire(QAudioBufferPrivate *other)
     {
         if (!other)
-            return 0;
+            return nullptr;
 
         // Ref the other (if there are extant data() pointers, they will
         // also point here - it's a feature, not a bug, like QByteArray)
@@ -131,7 +131,7 @@ public:
                 }
             }
         } else
-            mBuffer = 0;
+            mBuffer = nullptr;
     }
 
     ~QMemoryAudioBufferProvider()
@@ -178,7 +178,7 @@ QAudioBufferPrivate *QAudioBufferPrivate::clone()
         }
     }
 
-    return 0;
+    return nullptr;
 }
 
 /*!
@@ -199,7 +199,7 @@ QAudioBufferPrivate *QAudioBufferPrivate::clone()
     Create a new, empty, invalid buffer.
  */
 QAudioBuffer::QAudioBuffer()
-    : d(0)
+    : d(nullptr)
 {
 }
 
@@ -244,7 +244,7 @@ QAudioBuffer::QAudioBuffer(const QByteArray &data, const QAudioFormat &format, q
         int frameCount = format.framesForBytes(data.size());
         d = new QAudioBufferPrivate(new QMemoryAudioBufferProvider(data.constData(), frameCount, format, startTime));
     } else
-        d = 0;
+        d = nullptr;
 }
 
 /*!
@@ -259,9 +259,9 @@ QAudioBuffer::QAudioBuffer(const QByteArray &data, const QAudioFormat &format, q
 QAudioBuffer::QAudioBuffer(int numFrames, const QAudioFormat &format, qint64 startTime)
 {
     if (format.isValid())
-        d = new QAudioBufferPrivate(new QMemoryAudioBufferProvider(0, numFrames, format, startTime));
+        d = new QAudioBufferPrivate(new QMemoryAudioBufferProvider(nullptr, numFrames, format, startTime));
     else
-        d = 0;
+        d = nullptr;
 }
 
 /*!
@@ -394,7 +394,7 @@ qint64 QAudioBuffer::startTime() const
 const void* QAudioBuffer::constData() const
 {
     if (!isValid())
-        return 0;
+        return nullptr;
     return d->mProvider->constData();
 }
 
@@ -417,7 +417,7 @@ const void* QAudioBuffer::constData() const
 const void* QAudioBuffer::data() const
 {
     if (!isValid())
-        return 0;
+        return nullptr;
     return d->mProvider->constData();
 }
 
@@ -456,7 +456,7 @@ const void* QAudioBuffer::data() const
 void *QAudioBuffer::data()
 {
     if (!isValid())
-        return 0;
+        return nullptr;
 
     if (d->mCount.load() != 1) {
         // Can't share a writable buffer
@@ -465,7 +465,7 @@ void *QAudioBuffer::data()
 
         // This shouldn't happen
         if (!newd)
-            return 0;
+            return nullptr;
 
         d->deref();
         d = newd;
@@ -489,7 +489,7 @@ void *QAudioBuffer::data()
         return memBuffer->writableData();
     }
 
-    return 0;
+    return nullptr;
 }
 
 // Template helper classes worth documenting
diff --git a/src/multimedia/audio/qaudiodecoder.cpp b/src/multimedia/audio/qaudiodecoder.cpp
index ea1d0e56d..b4ba854e1 100644
--- a/src/multimedia/audio/qaudiodecoder.cpp
+++ b/src/multimedia/audio/qaudiodecoder.cpp
@@ -84,8 +84,8 @@ class QAudioDecoderPrivate : public QMediaObjectPrivate
 
 public:
     QAudioDecoderPrivate()
-        : provider(0)
-        , control(0)
+        : provider(nullptr)
+        , control(nullptr)
         , state(QAudioDecoder::StoppedState)
         , error(QAudioDecoder::NoError)
     {}
@@ -135,7 +135,7 @@ QAudioDecoder::QAudioDecoder(QObject *parent)
     d->provider = QMediaServiceProvider::defaultServiceProvider();
     if (d->service) {
         d->control = qobject_cast<QAudioDecoderControl*>(d->service->requestControl(QAudioDecoderControl_iid));
-        if (d->control != 0) {
+        if (d->control != nullptr) {
             connect(d->control, SIGNAL(stateChanged(QAudioDecoder::State)), SLOT(_q_stateChanged(QAudioDecoder::State)));
             connect(d->control, SIGNAL(error(int,QString)), SLOT(_q_error(int,QString)));
 
@@ -205,7 +205,7 @@ void QAudioDecoder::start()
 {
     Q_D(QAudioDecoder);
 
-    if (d->control == 0) {
+    if (d->control == nullptr) {
         QMetaObject::invokeMethod(this, "_q_error", Qt::QueuedConnection,
                                     Q_ARG(int, QAudioDecoder::ServiceMissingError),
                                     Q_ARG(QString, tr("The QAudioDecoder object does not have a valid service")));
@@ -226,7 +226,7 @@ void QAudioDecoder::stop()
 {
     Q_D(QAudioDecoder);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d->control->stop();
 }
 
@@ -256,7 +256,7 @@ void QAudioDecoder::setSourceFilename(const QString &fileName)
 {
     Q_D(QAudioDecoder);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d_func()->control->setSourceFilename(fileName);
 }
 
@@ -269,7 +269,7 @@ QIODevice *QAudioDecoder::sourceDevice() const
     Q_D(const QAudioDecoder);
     if (d->control)
         return d->control->sourceDevice();
-    return 0;
+    return nullptr;
 }
 
 /*!
@@ -285,7 +285,7 @@ void QAudioDecoder::setSourceDevice(QIODevice *device)
 {
     Q_D(QAudioDecoder);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d_func()->control->setSourceDevice(device);
 }
 
@@ -327,7 +327,7 @@ void QAudioDecoder::setAudioFormat(const QAudioFormat &format)
     if (state() != QAudioDecoder::StoppedState)
         return;
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d_func()->control->setAudioFormat(format);
 }
 
diff --git a/src/multimedia/audio/qaudiodevicefactory.cpp b/src/multimedia/audio/qaudiodevicefactory.cpp
index b1788f28a..cf770c468 100644
--- a/src/multimedia/audio/qaudiodevicefactory.cpp
+++ b/src/multimedia/audio/qaudiodevicefactory.cpp
@@ -77,7 +77,7 @@ class QNullInputDevice : public QAbstractAudioInput
 {
 public:
     void start(QIODevice*) override { qWarning()<<"using null input device, none available";}
-    QIODevice* start() override { qWarning()<<"using null input device, none available"; return 0; }
+    QIODevice *start() override { qWarning()<<"using null input device, none available"; return nullptr; }
     void stop() override {}
     void reset() override {}
     void suspend() override {}
@@ -102,7 +102,7 @@ class QNullOutputDevice : public QAbstractAudioOutput
 {
 public:
     void start(QIODevice*) override {qWarning()<<"using null output device, none available";}
-    QIODevice* start() override { qWarning()<<"using null output device, none available"; return 0; }
+    QIODevice *start() override { qWarning()<<"using null output device, none available"; return nullptr; }
     void stop() override {}
     void reset() override {}
     void suspend() override {}
@@ -194,7 +194,7 @@ QAudioDeviceInfo QAudioDeviceFactory::defaultDevice(QAudio::Mode mode)
 
 QAbstractAudioDeviceInfo* QAudioDeviceFactory::audioDeviceInfo(const QString &realm, const QByteArray &handle, QAudio::Mode mode)
 {
-    QAbstractAudioDeviceInfo *rc = 0;
+    QAbstractAudioDeviceInfo *rc = nullptr;
 
 #if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
     QAudioSystemFactoryInterface* plugin =
@@ -204,7 +204,7 @@ QAbstractAudioDeviceInfo* QAudioDeviceFactory::audioDeviceInfo(const QString &re
         rc = plugin->createDeviceInfo(handle, mode);
 #endif
 
-    return rc == 0 ? new QNullDeviceInfo() : rc;
+    return rc == nullptr ? new QNullDeviceInfo() : rc;
 }
 
 QAbstractAudioInput* QAudioDeviceFactory::createDefaultInputDevice(QAudioFormat const &format)
diff --git a/src/multimedia/audio/qaudiodeviceinfo.cpp b/src/multimedia/audio/qaudiodeviceinfo.cpp
index f4f548017..b8cac18eb 100644
--- a/src/multimedia/audio/qaudiodeviceinfo.cpp
+++ b/src/multimedia/audio/qaudiodeviceinfo.cpp
@@ -57,7 +57,7 @@ class QAudioDeviceInfoPrivate : public QSharedData
 public:
     QAudioDeviceInfoPrivate()
         : mode(QAudio::AudioOutput)
-        , info(0)
+        , info(nullptr)
     {
     }
 
@@ -67,7 +67,7 @@ public:
         if (!handle.isEmpty())
             info = QAudioDeviceFactory::audioDeviceInfo(realm, handle, mode);
         else
-            info = NULL;
+            info = nullptr;
     }
 
     QAudioDeviceInfoPrivate(const QAudioDeviceInfoPrivate &other):
@@ -213,7 +213,7 @@ bool QAudioDeviceInfo::operator !=(const QAudioDeviceInfo &other) const
 */
 bool QAudioDeviceInfo::isNull() const
 {
-    return d->info == 0;
+    return d->info == nullptr;
 }
 
 /*!
diff --git a/src/multimedia/audio/qaudioprobe.cpp b/src/multimedia/audio/qaudioprobe.cpp
index 23687c3cb..b6fe86b11 100644
--- a/src/multimedia/audio/qaudioprobe.cpp
+++ b/src/multimedia/audio/qaudioprobe.cpp
@@ -156,7 +156,7 @@ bool QAudioProbe::setSource(QMediaObject *source)
         }
     }
 
-    return (!source || d->probee != 0);
+    return (!source || d->probee != nullptr);
 }
 
 /*!
@@ -176,7 +176,7 @@ bool QAudioProbe::setSource(QMediaObject *source)
  */
 bool QAudioProbe::setSource(QMediaRecorder *mediaRecorder)
 {
-    QMediaObject *source = mediaRecorder ? mediaRecorder->mediaObject() : 0;
+    QMediaObject *source = mediaRecorder ? mediaRecorder->mediaObject() : nullptr;
     bool result = setSource(source);
 
     if (!mediaRecorder)
@@ -195,7 +195,7 @@ bool QAudioProbe::setSource(QMediaRecorder *mediaRecorder)
  */
 bool QAudioProbe::isActive() const
 {
-    return d->probee != 0;
+    return d->probee != nullptr;
 }
 
 /*!
diff --git a/src/multimedia/audio/qsamplecache_p.cpp b/src/multimedia/audio/qsamplecache_p.cpp
index c956d764b..945fabe52 100644
--- a/src/multimedia/audio/qsamplecache_p.cpp
+++ b/src/multimedia/audio/qsamplecache_p.cpp
@@ -97,7 +97,7 @@ QT_BEGIN_NAMESPACE
 
 QSampleCache::QSampleCache(QObject *parent)
     : QObject(parent)
-    , m_networkAccessManager(0)
+    , m_networkAccessManager(nullptr)
     , m_mutex(QMutex::Recursive)
     , m_capacity(0)
     , m_usage(0)
@@ -327,8 +327,8 @@ void QSample::cleanup()
     if (m_stream)
         m_stream->deleteLater();
 
-    m_waveDecoder = 0;
-    m_stream = 0;
+    m_waveDecoder = nullptr;
+    m_stream = nullptr;
 }
 
 // Called in application thread
@@ -429,8 +429,8 @@ void QSample::onReady()
 // Called in application thread, then moved to loader thread
 QSample::QSample(const QUrl& url, QSampleCache *parent)
     : m_parent(parent)
-    , m_stream(0)
-    , m_waveDecoder(0)
+    , m_stream(nullptr)
+    , m_waveDecoder(nullptr)
     , m_url(url)
     , m_sampleReadLength(0)
     , m_state(Creating)
diff --git a/src/multimedia/audio/qsamplecache_p.h b/src/multimedia/audio/qsamplecache_p.h
index d3a348528..094e3281e 100644
--- a/src/multimedia/audio/qsamplecache_p.h
+++ b/src/multimedia/audio/qsamplecache_p.h
@@ -127,7 +127,7 @@ class Q_MULTIMEDIA_EXPORT QSampleCache : public QObject
 public:
     friend class QSample;
 
-    QSampleCache(QObject *parent = 0);
+    QSampleCache(QObject *parent = nullptr);
     ~QSampleCache();
 
     QSample* requestSample(const QUrl& url);
diff --git a/src/multimedia/audio/qwavedecoder_p.h b/src/multimedia/audio/qwavedecoder_p.h
index 0f1cef599..3be0dbaa6 100644
--- a/src/multimedia/audio/qwavedecoder_p.h
+++ b/src/multimedia/audio/qwavedecoder_p.h
@@ -64,7 +64,7 @@ class QWaveDecoder : public QIODevice
     Q_OBJECT
 
 public:
-    explicit QWaveDecoder(QIODevice *source, QObject *parent = 0);
+    explicit QWaveDecoder(QIODevice *source, QObject *parent = nullptr);
     ~QWaveDecoder();
 
     QAudioFormat audioFormat() const;
diff --git a/src/multimedia/camera/qcamera.cpp b/src/multimedia/camera/qcamera.cpp
index 722c5b629..75f42db6e 100644
--- a/src/multimedia/camera/qcamera.cpp
+++ b/src/multimedia/camera/qcamera.cpp
@@ -206,12 +206,12 @@ void QCameraPrivate::initControls()
 
         error = QCamera::NoError;
     } else {
-        control = 0;
-        locksControl = 0;
-        deviceControl = 0;
-        infoControl = 0;
-        viewfinderSettingsControl = 0;
-        viewfinderSettingsControl2 = 0;
+        control = nullptr;
+        locksControl = nullptr;
+        deviceControl = nullptr;
+        infoControl = nullptr;
+        viewfinderSettingsControl = nullptr;
+        viewfinderSettingsControl2 = nullptr;
 
         error = QCamera::ServiceMissingError;
         errorString = QCamera::tr("The camera service is missing");
@@ -241,16 +241,16 @@ void QCameraPrivate::clear()
         provider->releaseService(service);
     }
 
-    cameraExposure = 0;
-    cameraFocus = 0;
-    imageProcessing = 0;
-    control = 0;
-    locksControl = 0;
-    deviceControl = 0;
-    infoControl = 0;
-    viewfinderSettingsControl = 0;
-    viewfinderSettingsControl2 = 0;
-    service = 0;
+    cameraExposure = nullptr;
+    cameraFocus = nullptr;
+    imageProcessing = nullptr;
+    control = nullptr;
+    locksControl = nullptr;
+    deviceControl = nullptr;
+    infoControl = nullptr;
+    viewfinderSettingsControl = nullptr;
+    viewfinderSettingsControl2 = nullptr;
+    service = nullptr;
 }
 
 void QCameraPrivate::updateLockStatus()
@@ -328,7 +328,7 @@ QCamera::QCamera(QObject *parent):
     d->init();
 
     // Select the default camera
-    if (d->service != 0 && d->deviceControl)
+    if (d->service != nullptr && d->deviceControl)
         d->deviceControl->setSelectedDevice(d->deviceControl->defaultDevice());
 }
 
@@ -347,7 +347,7 @@ QCamera::QCamera(const QByteArray& deviceName, QObject *parent):
     Q_D(QCamera);
     d->init();
 
-    if (d->service != 0) {
+    if (d->service != nullptr) {
         //pass device name to service
         if (d->deviceControl) {
             const QString name = QString::fromLatin1(deviceName);
@@ -376,7 +376,7 @@ QCamera::QCamera(const QCameraInfo &cameraInfo, QObject *parent)
     Q_D(QCamera);
     d->init();
 
-    if (d->service != 0 && d->deviceControl) {
+    if (d->service != nullptr && d->deviceControl) {
         for (int i = 0; i < d->deviceControl->deviceCount(); i++) {
             if (d->deviceControl->deviceName(i) == cameraInfo.deviceName()) {
                 d->deviceControl->setSelectedDevice(i);
@@ -406,7 +406,7 @@ QCamera::QCamera(QCamera::Position position, QObject *parent)
     Q_D(QCamera);
     d->init();
 
-    if (d->service != 0 && d->deviceControl) {
+    if (d->service != nullptr && d->deviceControl) {
         bool selectDefault = true;
 
         if (d->infoControl && position != UnspecifiedPosition) {
@@ -440,7 +440,7 @@ QCamera::~QCamera()
 QMultimedia::AvailabilityStatus QCamera::availability() const
 {
     Q_D(const QCamera);
-    if (d->control == NULL)
+    if (d->control == nullptr)
         return QMultimedia::ServiceMissing;
 
     if (d->deviceControl && d->deviceControl->deviceCount() == 0)
@@ -494,7 +494,7 @@ void QCamera::setViewfinder(QVideoWidget *viewfinder)
     // We don't know (in this library) that QVideoWidget inherits QObject
     QObject *viewFinderObject = reinterpret_cast<QObject*>(viewfinder);
 
-    d->viewfinder = viewFinderObject && bind(viewFinderObject) ? viewFinderObject : 0;
+    d->viewfinder = viewFinderObject && bind(viewFinderObject) ? viewFinderObject : nullptr;
 }
 
 /*!
@@ -515,7 +515,7 @@ void QCamera::setViewfinder(QGraphicsVideoItem *viewfinder)
     // but QObject inheritance depends on QObject coming first, so try this out.
     QObject *viewFinderObject = reinterpret_cast<QObject*>(viewfinder);
 
-    d->viewfinder = viewFinderObject && bind(viewFinderObject) ? viewFinderObject : 0;
+    d->viewfinder = viewFinderObject && bind(viewFinderObject) ? viewFinderObject : nullptr;
 }
 
 /*!
@@ -535,14 +535,14 @@ void QCamera::setViewfinder(QAbstractVideoSurface *surface)
         if (d->viewfinder)
             unbind(d->viewfinder);
 
-        d->viewfinder = 0;
+        d->viewfinder = nullptr;
 
         if (surface && bind(&d->surfaceViewfinder))
             d->viewfinder = &d->surfaceViewfinder;
     } else if (!surface) {
         //unbind the surfaceViewfinder if null surface is set
         unbind(&d->surfaceViewfinder);
-        d->viewfinder = 0;
+        d->viewfinder = nullptr;
     }
 }
 
diff --git a/src/multimedia/camera/qcamera_p.h b/src/multimedia/camera/qcamera_p.h
index 49b4376b2..99759dbd3 100644
--- a/src/multimedia/camera/qcamera_p.h
+++ b/src/multimedia/camera/qcamera_p.h
@@ -71,18 +71,18 @@ class QCameraPrivate : public QMediaObjectPrivate
 public:
     QCameraPrivate():
         QMediaObjectPrivate(),
-        provider(0),
-        control(0),
-        deviceControl(0),
-        locksControl(0),
-        infoControl(0),
-        viewfinderSettingsControl(0),
-        viewfinderSettingsControl2(0),
-        cameraExposure(0),
-        cameraFocus(0),
-        imageProcessing(0),
-        viewfinder(0),
-        capture(0),
+        provider(nullptr),
+        control(nullptr),
+        deviceControl(nullptr),
+        locksControl(nullptr),
+        infoControl(nullptr),
+        viewfinderSettingsControl(nullptr),
+        viewfinderSettingsControl2(nullptr),
+        cameraExposure(nullptr),
+        cameraFocus(nullptr),
+        imageProcessing(nullptr),
+        viewfinder(nullptr),
+        capture(nullptr),
         state(QCamera::UnloadedState),
         error(QCamera::NoError),
         requestedLocks(QCamera::NoLock),
diff --git a/src/multimedia/camera/qcameraexposure.cpp b/src/multimedia/camera/qcameraexposure.cpp
index d289aed33..91950c7d2 100644
--- a/src/multimedia/camera/qcameraexposure.cpp
+++ b/src/multimedia/camera/qcameraexposure.cpp
@@ -98,8 +98,8 @@ void QCameraExposurePrivate::initControls()
     Q_Q(QCameraExposure);
 
     QMediaService *service = camera->service();
-    exposureControl = 0;
-    flashControl = 0;
+    exposureControl = nullptr;
+    flashControl = nullptr;
     if (service) {
         exposureControl = qobject_cast<QCameraExposureControl *>(service->requestControl(QCameraExposureControl_iid));
         flashControl = qobject_cast<QCameraFlashControl *>(service->requestControl(QCameraFlashControl_iid));
@@ -217,7 +217,7 @@ QCameraExposure::~QCameraExposure()
 */
 bool QCameraExposure::isAvailable() const
 {
-    return d_func()->exposureControl != 0;
+    return d_func()->exposureControl != nullptr;
 }
 
 
diff --git a/src/multimedia/camera/qcamerafocus.cpp b/src/multimedia/camera/qcamerafocus.cpp
index 848b33df8..e73a8ea46 100644
--- a/src/multimedia/camera/qcamerafocus.cpp
+++ b/src/multimedia/camera/qcamerafocus.cpp
@@ -339,8 +339,8 @@ void QCameraFocusPrivate::initControls()
 {
     Q_Q(QCameraFocus);
 
-    focusControl = 0;
-    zoomControl = 0;
+    focusControl = nullptr;
+    zoomControl = nullptr;
 
     QMediaService *service = camera->service();
     if (service) {
@@ -348,7 +348,7 @@ void QCameraFocusPrivate::initControls()
         zoomControl = qobject_cast<QCameraZoomControl *>(service->requestControl(QCameraZoomControl_iid));
     }
 
-    available = focusControl != 0;
+    available = focusControl != nullptr;
 
     if (!focusControl)
         focusControl = new QCameraFocusFakeFocusControl(q);
diff --git a/src/multimedia/camera/qcameraimagecapture.cpp b/src/multimedia/camera/qcameraimagecapture.cpp
index cedae2609..8f364a686 100644
--- a/src/multimedia/camera/qcameraimagecapture.cpp
+++ b/src/multimedia/camera/qcameraimagecapture.cpp
@@ -117,11 +117,11 @@ public:
 };
 
 QCameraImageCapturePrivate::QCameraImageCapturePrivate():
-     mediaObject(0),
-     control(0),
-     encoderControl(0),
-     captureDestinationControl(0),
-     bufferFormatControl(0),
+     mediaObject(nullptr),
+     control(nullptr),
+     encoderControl(nullptr),
+     captureDestinationControl(nullptr),
+     bufferFormatControl(nullptr),
      error(QCameraImageCapture::NoError)
 {
 }
@@ -144,11 +144,11 @@ void QCameraImageCapturePrivate::_q_readyChanged(bool ready)
 
 void QCameraImageCapturePrivate::_q_serviceDestroyed()
 {
-    mediaObject = 0;
-    control = 0;
-    encoderControl = 0;
-    captureDestinationControl = 0;
-    bufferFormatControl = 0;
+    mediaObject = nullptr;
+    control = nullptr;
+    encoderControl = nullptr;
+    captureDestinationControl = nullptr;
+    bufferFormatControl = nullptr;
 }
 
 /*!
@@ -284,11 +284,11 @@ bool QCameraImageCapture::setMediaObject(QMediaObject *mediaObject)
     }
 
     // without QCameraImageCaptureControl discard the media object
-    d->mediaObject = 0;
-    d->control = 0;
-    d->encoderControl = 0;
-    d->captureDestinationControl = 0;
-    d->bufferFormatControl = 0;
+    d->mediaObject = nullptr;
+    d->control = nullptr;
+    d->encoderControl = nullptr;
+    d->captureDestinationControl = nullptr;
+    d->bufferFormatControl = nullptr;
 
     return false;
 }
@@ -298,7 +298,7 @@ bool QCameraImageCapture::setMediaObject(QMediaObject *mediaObject)
 */
 bool QCameraImageCapture::isAvailable() const
 {
-    if (d_func()->control != NULL)
+    if (d_func()->control != nullptr)
         return true;
     else
         return false;
@@ -309,7 +309,7 @@ bool QCameraImageCapture::isAvailable() const
 */
 QMultimedia::AvailabilityStatus QCameraImageCapture::availability() const
 {
-    if (d_func()->control != NULL)
+    if (d_func()->control != nullptr)
         return QMultimedia::Available;
     else
         return QMultimedia::ServiceMissing;
diff --git a/src/multimedia/camera/qcameraimageprocessing.cpp b/src/multimedia/camera/qcameraimageprocessing.cpp
index 737b74b73..c2cefeae7 100644
--- a/src/multimedia/camera/qcameraimageprocessing.cpp
+++ b/src/multimedia/camera/qcameraimageprocessing.cpp
@@ -130,7 +130,7 @@ void QCameraImageProcessingPrivate::initControls()
     if (service)
         imageControl = qobject_cast<QCameraImageProcessingControl *>(service->requestControl(QCameraImageProcessingControl_iid));
 
-    available = (imageControl != 0);
+    available = (imageControl != nullptr);
 
     if (!imageControl)
         imageControl = new QCameraImageProcessingFakeControl(q_ptr);
diff --git a/src/multimedia/controls/qmediaplaylistcontrol_p.h b/src/multimedia/controls/qmediaplaylistcontrol_p.h
index 721a471c4..93c5a3e25 100644
--- a/src/multimedia/controls/qmediaplaylistcontrol_p.h
+++ b/src/multimedia/controls/qmediaplaylistcontrol_p.h
@@ -90,7 +90,7 @@ Q_SIGNALS:
     void playbackModeChanged(QMediaPlaylist::PlaybackMode mode);
 
 protected:
-    QMediaPlaylistControl(QObject* parent = 0);
+    QMediaPlaylistControl(QObject *parent = nullptr);
 };
 
 #define QMediaPlaylistControl_iid "org.qt-project.qt.mediaplaylistcontrol/5.0"
diff --git a/src/multimedia/controls/qmediaplaylistsourcecontrol_p.h b/src/multimedia/controls/qmediaplaylistsourcecontrol_p.h
index 18bf91d5b..a98ee8738 100644
--- a/src/multimedia/controls/qmediaplaylistsourcecontrol_p.h
+++ b/src/multimedia/controls/qmediaplaylistsourcecontrol_p.h
@@ -73,7 +73,7 @@ Q_SIGNALS:
     void playlistChanged(QMediaPlaylist* playlist);
 
 protected:
-    QMediaPlaylistSourceControl(QObject* parent = 0);
+    QMediaPlaylistSourceControl(QObject *parent = nullptr);
 };
 
 #define QMediaPlaylistSourceControl_iid "org.qt-project.qt.mediaplaylistsourcecontrol/5.0"
diff --git a/src/multimedia/playback/qmediacontent.cpp b/src/multimedia/playback/qmediacontent.cpp
index bce65ddbc..85ccc35a2 100644
--- a/src/multimedia/playback/qmediacontent.cpp
+++ b/src/multimedia/playback/qmediacontent.cpp
@@ -253,8 +253,8 @@ QMediaContent& QMediaContent::operator=(const QMediaContent &other)
 
 bool QMediaContent::operator==(const QMediaContent &other) const
 {
-    return (d.constData() == 0 && other.d.constData() == 0) ||
-            (d.constData() != 0 && other.d.constData() != 0 &&
+    return (d.constData() == 0 && other.d.constData() == nullptr) ||
+            (d.constData() != 0 && other.d.constData() != nullptr &&
              *d.constData() == *other.d.constData());
 }
 
@@ -273,7 +273,7 @@ bool QMediaContent::operator!=(const QMediaContent &other) const
 
 bool QMediaContent::isNull() const
 {
-    return d.constData() == 0;
+    return d.constData() == nullptr;
 }
 
 /*!
@@ -311,7 +311,7 @@ QNetworkRequest QMediaContent::canonicalRequest() const
 
 QMediaResource QMediaContent::canonicalResource() const
 {
-    return d.constData() != 0
+    return d.constData() != nullptr
             ?  d->resources.value(0)
             : QMediaResource();
 }
@@ -325,7 +325,7 @@ QMediaResource QMediaContent::canonicalResource() const
 
 QMediaResourceList QMediaContent::resources() const
 {
-    return d.constData() != 0
+    return d.constData() != nullptr
             ? d->resources
             : QMediaResourceList();
 }
@@ -337,9 +337,9 @@ QMediaResourceList QMediaContent::resources() const
 
 QMediaPlaylist *QMediaContent::playlist() const
 {
-    return d.constData() != 0
+    return d.constData() != nullptr
             ? d->playlist.data()
-            : 0;
+            : nullptr;
 }
 
 QT_END_NAMESPACE
diff --git a/src/multimedia/playback/qmedianetworkplaylistprovider_p.h b/src/multimedia/playback/qmedianetworkplaylistprovider_p.h
index 3d1ffe66a..6b5220935 100644
--- a/src/multimedia/playback/qmedianetworkplaylistprovider_p.h
+++ b/src/multimedia/playback/qmedianetworkplaylistprovider_p.h
@@ -61,10 +61,10 @@ class Q_MULTIMEDIA_EXPORT QMediaNetworkPlaylistProvider : public QMediaPlaylistP
 {
     Q_OBJECT
 public:
-    QMediaNetworkPlaylistProvider(QObject *parent=0);
+    QMediaNetworkPlaylistProvider(QObject *parent = nullptr);
     ~QMediaNetworkPlaylistProvider();
 
-    bool load(const QNetworkRequest &request, const char *format = 0) override;
+    bool load(const QNetworkRequest &request, const char *format = nullptr) override;
 
     int mediaCount() const override;
     QMediaContent media(int pos) const override;
diff --git a/src/multimedia/playback/qmediaplayer.cpp b/src/multimedia/playback/qmediaplayer.cpp
index 19d4ec42c..3308537a9 100644
--- a/src/multimedia/playback/qmediaplayer.cpp
+++ b/src/multimedia/playback/qmediaplayer.cpp
@@ -109,12 +109,12 @@ class QMediaPlayerPrivate : public QMediaObjectPrivate
 
 public:
     QMediaPlayerPrivate()
-        : provider(0)
-        , control(0)
-        , audioRoleControl(0)
-        , customAudioRoleControl(0)
-        , playlist(0)
-        , networkAccessControl(0)
+        : provider(nullptr)
+        , control(nullptr)
+        , audioRoleControl(nullptr)
+        , customAudioRoleControl(nullptr)
+        , playlist(nullptr)
+        , networkAccessControl(nullptr)
         , state(QMediaPlayer::StoppedState)
         , status(QMediaPlayer::UnknownMediaStatus)
         , error(QMediaPlayer::NoError)
@@ -148,7 +148,7 @@ public:
     QMediaPlaylist *parentPlaylist(QMediaPlaylist *pls);
     bool isInChain(const QUrl &url);
 
-    void setMedia(const QMediaContent &media, QIODevice *stream = 0);
+    void setMedia(const QMediaContent &media, QIODevice *stream = nullptr);
 
     void setPlaylist(QMediaPlaylist *playlist);
     void setPlaylistMedia();
@@ -175,7 +175,7 @@ QMediaPlaylist *QMediaPlayerPrivate::parentPlaylist(QMediaPlaylist *pls)
     for (QMediaPlaylist *current = rootMedia.playlist(); current && current != pls; current = current->currentMedia().playlist())
         if (current->currentMedia().playlist() == pls)
             return current;
-    return 0;
+    return nullptr;
 }
 
 bool QMediaPlayerPrivate::isInChain(const QUrl &url)
@@ -309,7 +309,7 @@ void QMediaPlayerPrivate::_q_updateMedia(const QMediaContent &media)
 
     const QMediaPlayer::State currentState = state;
 
-    setMedia(media, 0);
+    setMedia(media, nullptr);
 
     if (!media.isNull()) {
         switch (currentState) {
@@ -329,8 +329,8 @@ void QMediaPlayerPrivate::_q_updateMedia(const QMediaContent &media)
 
 void QMediaPlayerPrivate::_q_playlistDestroyed()
 {
-    playlist = 0;
-    setMedia(QMediaContent(), 0);
+    playlist = nullptr;
+    setMedia(QMediaContent(), nullptr);
 }
 
 void QMediaPlayerPrivate::setMedia(const QMediaContent &media, QIODevice *stream)
@@ -360,7 +360,7 @@ void QMediaPlayerPrivate::setMedia(const QMediaContent &media, QIODevice *stream
             // on the backend side since we can't load the new one and we want to be in the
             // InvalidMedia status.
             ignoreNextStatusChange = QMediaPlayer::NoMedia;
-            control->setMedia(QMediaContent(), 0);
+            control->setMedia(QMediaContent(), nullptr);
 
         } else if (hasStreamPlaybackFeature) {
             control->setMedia(media, file.data());
@@ -386,7 +386,7 @@ void QMediaPlayerPrivate::setMedia(const QMediaContent &media, QIODevice *stream
             tempFile->close();
 
             file.reset(tempFile);
-            control->setMedia(QMediaContent(QUrl::fromLocalFile(file->fileName())), 0);
+            control->setMedia(QMediaContent(QUrl::fromLocalFile(file->fileName())), nullptr);
 #else
             qWarning("Qt was built with -no-feature-temporaryfile: playback from resource file is not supported!");
 #endif
@@ -447,13 +447,13 @@ void QMediaPlayerPrivate::setPlaylistMedia()
             //                      media is not changed,
             //                      frontend needs to emit currentMediaChanged
             bool isSameMedia = (q->currentMedia() == playlist->currentMedia());
-            setMedia(playlist->currentMedia(), 0);
+            setMedia(playlist->currentMedia(), nullptr);
             if (isSameMedia) {
                 emit q->currentMediaChanged(q->currentMedia());
             }
         }
     } else {
-        setMedia(QMediaContent(), 0);
+        setMedia(QMediaContent(), nullptr);
     }
 }
 
@@ -545,7 +545,7 @@ void QMediaPlayerPrivate::_q_handlePlaylistLoadFailed()
     if (playlist)
         playlist->next();
     else
-        setMedia(QMediaContent(), 0);
+        setMedia(QMediaContent(), nullptr);
 }
 
 static QMediaService *playerService(QMediaPlayer::Flags flags)
@@ -583,12 +583,12 @@ QMediaPlayer::QMediaPlayer(QObject *parent, QMediaPlayer::Flags flags):
     Q_D(QMediaPlayer);
 
     d->provider = QMediaServiceProvider::defaultServiceProvider();
-    if (d->service == 0) {
+    if (d->service == nullptr) {
         d->error = ServiceMissingError;
     } else {
         d->control = qobject_cast<QMediaPlayerControl*>(d->service->requestControl(QMediaPlayerControl_iid));
         d->networkAccessControl = qobject_cast<QMediaNetworkAccessControl*>(d->service->requestControl(QMediaNetworkAccessControl_iid));
-        if (d->control != 0) {
+        if (d->control != nullptr) {
             connect(d->control, SIGNAL(mediaChanged(QMediaContent)), SLOT(_q_handleMediaChanged(QMediaContent)));
             connect(d->control, SIGNAL(stateChanged(QMediaPlayer::State)), SLOT(_q_stateChanged(QMediaPlayer::State)));
             connect(d->control, SIGNAL(mediaStatusChanged(QMediaPlayer::MediaStatus)),
@@ -631,7 +631,7 @@ QMediaPlayer::QMediaPlayer(QObject *parent, QMediaPlayer::Flags flags):
                 }
             }
         }
-        if (d->networkAccessControl != 0) {
+        if (d->networkAccessControl != nullptr) {
             connect(d->networkAccessControl, SIGNAL(configurationChanged(QNetworkConfiguration)),
             this, SIGNAL(networkConfigurationChanged(QNetworkConfiguration)));
         }
@@ -685,7 +685,7 @@ const QIODevice *QMediaPlayer::mediaStream() const
     if (d->control && d->qrcMedia.isNull())
         return d->control->mediaStream();
 
-    return 0;
+    return nullptr;
 }
 
 QMediaPlaylist *QMediaPlayer::playlist() const
@@ -737,7 +737,7 @@ QMediaPlayer::State QMediaPlayer::state() const
 
     // In case if EndOfMedia status is already received
     // but state is not.
-    if (d->control != 0
+    if (d->control != nullptr
         && d->status == QMediaPlayer::EndOfMedia
         && d->state != d->control->state()) {
         return d->control->state();
@@ -755,7 +755,7 @@ qint64 QMediaPlayer::duration() const
 {
     Q_D(const QMediaPlayer);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->duration();
 
     return -1;
@@ -765,7 +765,7 @@ qint64 QMediaPlayer::position() const
 {
     Q_D(const QMediaPlayer);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->position();
 
     return 0;
@@ -775,7 +775,7 @@ int QMediaPlayer::volume() const
 {
     Q_D(const QMediaPlayer);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->volume();
 
     return 0;
@@ -785,7 +785,7 @@ bool QMediaPlayer::isMuted() const
 {
     Q_D(const QMediaPlayer);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->isMuted();
 
     return false;
@@ -795,7 +795,7 @@ int QMediaPlayer::bufferStatus() const
 {
     Q_D(const QMediaPlayer);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->bufferStatus();
 
     return 0;
@@ -805,7 +805,7 @@ bool QMediaPlayer::isAudioAvailable() const
 {
     Q_D(const QMediaPlayer);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->isAudioAvailable();
 
     return false;
@@ -815,7 +815,7 @@ bool QMediaPlayer::isVideoAvailable() const
 {
     Q_D(const QMediaPlayer);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->isVideoAvailable();
 
     return false;
@@ -825,7 +825,7 @@ bool QMediaPlayer::isSeekable() const
 {
     Q_D(const QMediaPlayer);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->isSeekable();
 
     return false;
@@ -835,7 +835,7 @@ qreal QMediaPlayer::playbackRate() const
 {
     Q_D(const QMediaPlayer);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->playbackRate();
 
     return 0.0;
@@ -880,7 +880,7 @@ void QMediaPlayer::play()
 {
     Q_D(QMediaPlayer);
 
-    if (d->control == 0) {
+    if (d->control == nullptr) {
         QMetaObject::invokeMethod(this, "_q_error", Qt::QueuedConnection,
                                     Q_ARG(int, QMediaPlayer::ServiceMissingError),
                                     Q_ARG(QString, tr("The QMediaPlayer object does not have a valid service")));
@@ -918,7 +918,7 @@ void QMediaPlayer::pause()
 {
     Q_D(QMediaPlayer);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d->control->pause();
 }
 
@@ -930,7 +930,7 @@ void QMediaPlayer::stop()
 {
     Q_D(QMediaPlayer);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d->control->stop();
 
     // If media player didn't stop in response to control.
@@ -949,7 +949,7 @@ void QMediaPlayer::setPosition(qint64 position)
 {
     Q_D(QMediaPlayer);
 
-    if (d->control == 0)
+    if (d->control == nullptr)
         return;
 
     d->control->setPosition(qMax(position, 0ll));
@@ -959,7 +959,7 @@ void QMediaPlayer::setVolume(int v)
 {
     Q_D(QMediaPlayer);
 
-    if (d->control == 0)
+    if (d->control == nullptr)
         return;
 
     int clamped = qBound(0, v, 100);
@@ -973,7 +973,7 @@ void QMediaPlayer::setMuted(bool muted)
 {
     Q_D(QMediaPlayer);
 
-    if (d->control == 0 || muted == isMuted())
+    if (d->control == nullptr || muted == isMuted())
         return;
 
     d->control->setMuted(muted);
@@ -983,7 +983,7 @@ void QMediaPlayer::setPlaybackRate(qreal rate)
 {
     Q_D(QMediaPlayer);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d->control->setPlaybackRate(rate);
 }
 
@@ -1011,7 +1011,7 @@ void QMediaPlayer::setMedia(const QMediaContent &media, QIODevice *stream)
 
     QMediaContent oldMedia = d->rootMedia;
     d->disconnectPlaylist();
-    d->playlist = 0;
+    d->playlist = nullptr;
     d->rootMedia = media;
     d->nestedPlaylists = 0;
 
@@ -1097,7 +1097,7 @@ void QMediaPlayer::setVideoOutput(QVideoWidget *output)
     // We don't know (in this library) that QVideoWidget inherits QObject
     QObject *outputObject = reinterpret_cast<QObject*>(output);
 
-    d->videoOutput = outputObject && bind(outputObject) ? outputObject : 0;
+    d->videoOutput = outputObject && bind(outputObject) ? outputObject : nullptr;
 }
 
 /*!
@@ -1119,7 +1119,7 @@ void QMediaPlayer::setVideoOutput(QGraphicsVideoItem *output)
     // but QObject inheritance depends on QObject coming first, so try this out.
     QObject *outputObject = reinterpret_cast<QObject*>(output);
 
-    d->videoOutput = outputObject && bind(outputObject) ? outputObject : 0;
+    d->videoOutput = outputObject && bind(outputObject) ? outputObject : nullptr;
 }
 
 /*!
@@ -1139,14 +1139,14 @@ void QMediaPlayer::setVideoOutput(QAbstractVideoSurface *surface)
         if (d->videoOutput)
             unbind(d->videoOutput);
 
-        d->videoOutput = 0;
+        d->videoOutput = nullptr;
 
         if (surface && bind(&d->surfaceOutput))
             d->videoOutput =  &d->surfaceOutput;
     }  else if (!surface) {
         //unbind the surfaceOutput if null surface is set
         unbind(&d->surfaceOutput);
-        d->videoOutput = 0;
+        d->videoOutput = nullptr;
     }
 }
 
@@ -1165,7 +1165,7 @@ QAudio::Role QMediaPlayer::audioRole() const
 {
     Q_D(const QMediaPlayer);
 
-    if (d->audioRoleControl != NULL)
+    if (d->audioRoleControl != nullptr)
         return d->audioRoleControl->audioRole();
 
     return QAudio::UnknownRole;
diff --git a/src/multimedia/playback/qmediaplaylist.cpp b/src/multimedia/playback/qmediaplaylist.cpp
index 97fe75044..7618827da 100644
--- a/src/multimedia/playback/qmediaplaylist.cpp
+++ b/src/multimedia/playback/qmediaplaylist.cpp
@@ -124,7 +124,7 @@ QMediaPlaylist::QMediaPlaylist(QObject *parent)
     d->q_ptr = this;
     d->networkPlaylistControl = new QMediaNetworkPlaylistControl(this);
 
-    setMediaObject(0);
+    setMediaObject(nullptr);
 }
 
 /*!
@@ -163,9 +163,9 @@ bool QMediaPlaylist::setMediaObject(QMediaObject *mediaObject)
         return true;
 
     QMediaService *service = mediaObject
-            ? mediaObject->service() : 0;
+            ? mediaObject->service() : nullptr;
 
-    QMediaPlaylistControl *newControl = 0;
+    QMediaPlaylistControl *newControl = nullptr;
 
     if (service)
         newControl = qobject_cast<QMediaPlaylistControl*>(service->requestControl(QMediaPlaylistControl_iid));
diff --git a/src/multimedia/playback/qmediaplaylist_p.h b/src/multimedia/playback/qmediaplaylist_p.h
index 8e081dd67..16fce00a9 100644
--- a/src/multimedia/playback/qmediaplaylist_p.h
+++ b/src/multimedia/playback/qmediaplaylist_p.h
@@ -78,9 +78,9 @@ class QMediaPlaylistPrivate
     Q_DECLARE_PUBLIC(QMediaPlaylist)
 public:
     QMediaPlaylistPrivate()
-        :mediaObject(0),
-        control(0),
-        networkPlaylistControl(0),
+        :mediaObject(nullptr),
+        control(nullptr),
+        networkPlaylistControl(nullptr),
         error(QMediaPlaylist::NoError)
     {
     }
@@ -98,10 +98,10 @@ public:
     void _q_mediaObjectDeleted()
     {
         Q_Q(QMediaPlaylist);
-        mediaObject = 0;
+        mediaObject = nullptr;
         if (control != networkPlaylistControl)
-            control = 0;
-        q->setMediaObject(0);
+            control = nullptr;
+        q->setMediaObject(nullptr);
     }
 
     QMediaObject *mediaObject;
diff --git a/src/multimedia/playback/qmediaplaylistioplugin_p.h b/src/multimedia/playback/qmediaplaylistioplugin_p.h
index 1e157d135..50bdcf9c0 100644
--- a/src/multimedia/playback/qmediaplaylistioplugin_p.h
+++ b/src/multimedia/playback/qmediaplaylistioplugin_p.h
@@ -106,7 +106,7 @@ class Q_MULTIMEDIA_EXPORT QMediaPlaylistIOPlugin : public QObject, public QMedia
 Q_OBJECT
 Q_INTERFACES(QMediaPlaylistIOInterface)
 public:
-    explicit QMediaPlaylistIOPlugin(QObject *parent = 0);
+    explicit QMediaPlaylistIOPlugin(QObject *parent = nullptr);
     ~QMediaPlaylistIOPlugin();
 
     bool canRead(QIODevice *device, const QByteArray &format = QByteArray() ) const override = 0;
diff --git a/src/multimedia/playback/qmediaplaylistnavigator.cpp b/src/multimedia/playback/qmediaplaylistnavigator.cpp
index 0966c9396..120f621f5 100644
--- a/src/multimedia/playback/qmediaplaylistnavigator.cpp
+++ b/src/multimedia/playback/qmediaplaylistnavigator.cpp
@@ -63,7 +63,7 @@ class QMediaPlaylistNavigatorPrivate
     Q_DECLARE_NON_CONST_PUBLIC(QMediaPlaylistNavigator)
 public:
     QMediaPlaylistNavigatorPrivate()
-        :playlist(0),
+        :playlist(nullptr),
         currentPos(-1),
         lastValidPos(-1),
         playbackMode(QMediaPlaylist::Sequential),
diff --git a/src/multimedia/playback/qmediaplaylistnavigator_p.h b/src/multimedia/playback/qmediaplaylistnavigator_p.h
index 3899c42d9..2ac03a62c 100644
--- a/src/multimedia/playback/qmediaplaylistnavigator_p.h
+++ b/src/multimedia/playback/qmediaplaylistnavigator_p.h
@@ -67,7 +67,7 @@ class Q_MULTIMEDIA_EXPORT QMediaPlaylistNavigator : public QObject
     Q_PROPERTY(QMediaContent currentItem READ currentItem)
 
 public:
-    QMediaPlaylistNavigator(QMediaPlaylistProvider *playlist, QObject *parent = 0);
+    QMediaPlaylistNavigator(QMediaPlaylistProvider *playlist, QObject *parent = nullptr);
     virtual ~QMediaPlaylistNavigator();
 
     QMediaPlaylistProvider *playlist() const;
diff --git a/src/multimedia/playback/qmediaplaylistprovider_p.h b/src/multimedia/playback/qmediaplaylistprovider_p.h
index 899c7c8bc..ed27612b9 100644
--- a/src/multimedia/playback/qmediaplaylistprovider_p.h
+++ b/src/multimedia/playback/qmediaplaylistprovider_p.h
@@ -70,12 +70,12 @@ class Q_MULTIMEDIA_EXPORT QMediaPlaylistProvider : public QObject
 {
 Q_OBJECT
 public:
-    QMediaPlaylistProvider(QObject *parent=0);
+    QMediaPlaylistProvider(QObject *parent = nullptr);
     virtual ~QMediaPlaylistProvider();
 
-    virtual bool load(const QNetworkRequest &request, const char *format = 0);
-    virtual bool load(QIODevice * device, const char *format = 0);
-    virtual bool save(const QUrl &location, const char *format = 0);
+    virtual bool load(const QNetworkRequest &request, const char *format = nullptr);
+    virtual bool load(QIODevice *device, const char *format = nullptr);
+    virtual bool save(const QUrl &location, const char *format = nullptr);
     virtual bool save(QIODevice * device, const char *format);
 
     virtual int mediaCount() const = 0;
diff --git a/src/multimedia/playback/qplaylistfileparser.cpp b/src/multimedia/playback/qplaylistfileparser.cpp
index 49c417085..92e7f97e8 100644
--- a/src/multimedia/playback/qplaylistfileparser.cpp
+++ b/src/multimedia/playback/qplaylistfileparser.cpp
@@ -273,7 +273,7 @@ class QPlaylistFileParserPrivate
 public:
     QPlaylistFileParserPrivate(QPlaylistFileParser *q)
         : q_ptr(q)
-        , m_stream(0)
+        , m_stream(nullptr)
         , m_type(QPlaylistFileParser::UNKNOWN)
         , m_scanIndex(0)
         , m_lineIndex(-1)
@@ -302,7 +302,7 @@ public:
         QMediaContent m_media;
         QString m_mimeType;
         bool isValid() const { return m_stream || !m_media.isNull(); }
-        void reset() { m_stream = 0; m_media = QMediaContent(); m_mimeType = QString(); }
+        void reset() { m_stream = nullptr; m_media = QMediaContent(); m_mimeType = QString(); }
     } m_pendingJob;
     int m_scanIndex;
     int m_lineIndex;
diff --git a/src/multimedia/playback/qplaylistfileparser_p.h b/src/multimedia/playback/qplaylistfileparser_p.h
index 328ecf998..cf96ccdbf 100644
--- a/src/multimedia/playback/qplaylistfileparser_p.h
+++ b/src/multimedia/playback/qplaylistfileparser_p.h
@@ -66,7 +66,7 @@ class Q_MULTIMEDIA_EXPORT QPlaylistFileParser : public QObject
 {
     Q_OBJECT
 public:
-    QPlaylistFileParser(QObject *parent = 0);
+    QPlaylistFileParser(QObject *parent = nullptr);
     ~QPlaylistFileParser();
 
     enum FileType
@@ -86,7 +86,7 @@ public:
         NetworkError
     };
 
-    void start(const QMediaContent &media, QIODevice *stream = 0, const QString &mimeType = QString());
+    void start(const QMediaContent &media, QIODevice *stream = nullptr, const QString &mimeType = QString());
     void start(const QNetworkRequest &request, const QString &mimeType = QString());
     void abort();
 
@@ -109,7 +109,7 @@ private:
                                      const QString& mime);
     static FileType findPlaylistType(const QString &suffix,
                                      const QString& mime,
-                                     const char *data = 0,
+                                     const char *data = nullptr,
                                      quint32 size = 0);
 
     Q_DISABLE_COPY(QPlaylistFileParser)
diff --git a/src/multimedia/qmediacontrol.h b/src/multimedia/qmediacontrol.h
index cff42e3ca..48ae44f8a 100644
--- a/src/multimedia/qmediacontrol.h
+++ b/src/multimedia/qmediacontrol.h
@@ -68,7 +68,7 @@ private:
     Q_DECLARE_PRIVATE(QMediaControl)
 };
 
-template <typename T> const char *qmediacontrol_iid() { return 0; }
+template <typename T> const char *qmediacontrol_iid() { return nullptr; }
 
 #define Q_MEDIA_DECLARE_CONTROL(Class, IId) \
     template <> inline const char *qmediacontrol_iid<Class *>() { return IId; }
diff --git a/src/multimedia/qmediaobject.cpp b/src/multimedia/qmediaobject.cpp
index 71b2d148c..a12cab404 100644
--- a/src/multimedia/qmediaobject.cpp
+++ b/src/multimedia/qmediaobject.cpp
@@ -127,7 +127,7 @@ QMediaObject::~QMediaObject()
 
 QMultimedia::AvailabilityStatus QMediaObject::availability() const
 {
-    if (d_func()->service == 0)
+    if (d_func()->service == nullptr)
         return QMultimedia::ServiceMissing;
 
     if (d_func()->availabilityControl)
@@ -216,7 +216,7 @@ void QMediaObject::unbind(QObject *object)
     QMediaBindableInterface *helper = qobject_cast<QMediaBindableInterface*>(object);
 
     if (helper && helper->mediaObject() == this)
-        helper->setMediaObject(0);
+        helper->setMediaObject(nullptr);
     else
         qWarning() << "QMediaObject: Trying to unbind not connected helper object";
 }
@@ -395,7 +395,7 @@ void QMediaObject::setupControls()
 {
     Q_D(QMediaObject);
 
-    if (d->service != 0) {
+    if (d->service != nullptr) {
         d->metaDataControl = qobject_cast<QMetaDataReaderControl*>(
                 d->service->requestControl(QMetaDataReaderControl_iid));
 
diff --git a/src/multimedia/qmediaobject_p.h b/src/multimedia/qmediaobject_p.h
index 3e663e03d..85caf9a50 100644
--- a/src/multimedia/qmediaobject_p.h
+++ b/src/multimedia/qmediaobject_p.h
@@ -73,7 +73,7 @@ class QMediaObjectPrivate
     Q_DECLARE_PUBLIC(QMediaObject)
 
 public:
-    QMediaObjectPrivate(): service(0), metaDataControl(0), availabilityControl(0), notifyTimer(0), q_ptr(0) {}
+    QMediaObjectPrivate() : service(nullptr), metaDataControl(nullptr), availabilityControl(nullptr), notifyTimer(nullptr), q_ptr(nullptr) {}
     virtual ~QMediaObjectPrivate() {}
 
     void _q_notify();
diff --git a/src/multimedia/qmediapluginloader.cpp b/src/multimedia/qmediapluginloader.cpp
index bd3c525f4..d0a058ac9 100644
--- a/src/multimedia/qmediapluginloader.cpp
+++ b/src/multimedia/qmediapluginloader.cpp
@@ -68,11 +68,11 @@ QStringList QMediaPluginLoader::keys() const
 QObject* QMediaPluginLoader::instance(QString const &key)
 {
     if (!m_metadata.contains(key))
-        return 0;
+        return nullptr;
 
     int idx = m_metadata.value(key).first().value(QStringLiteral("index")).toDouble();
     if (idx < 0)
-        return 0;
+        return nullptr;
 
     return m_factoryLoader->instance(idx);
 }
diff --git a/src/multimedia/qmediaresourcepolicy_p.cpp b/src/multimedia/qmediaresourcepolicy_p.cpp
index 1577f11af..14dc15968 100644
--- a/src/multimedia/qmediaresourcepolicy_p.cpp
+++ b/src/multimedia/qmediaresourcepolicy_p.cpp
@@ -84,7 +84,7 @@ QObject* QMediaResourcePolicy::createResourceSet(const QString& interfaceId)
     QMediaResourceSetFactoryInterface *factory =
             qobject_cast<QMediaResourceSetFactoryInterface*>(resourcePolicyLoader()
                                                              ->instance(QLatin1String("default")));
-    QObject* obj = 0;
+    QObject *obj = nullptr;
     if (factory)
         obj = factory->create(interfaceId);
 
diff --git a/src/multimedia/qmediaresourcepolicyplugin_p.h b/src/multimedia/qmediaresourcepolicyplugin_p.h
index 7b53c3b3a..e37551390 100644
--- a/src/multimedia/qmediaresourcepolicyplugin_p.h
+++ b/src/multimedia/qmediaresourcepolicyplugin_p.h
@@ -72,7 +72,7 @@ class Q_MULTIMEDIA_EXPORT QMediaResourcePolicyPlugin : public QObject, public QM
     Q_INTERFACES(QMediaResourceSetFactoryInterface)
 
 public:
-    QMediaResourcePolicyPlugin(QObject *parent = 0);
+    QMediaResourcePolicyPlugin(QObject *parent = nullptr);
     ~QMediaResourcePolicyPlugin();
 };
 
diff --git a/src/multimedia/qmediaresourceset_p.h b/src/multimedia/qmediaresourceset_p.h
index a0158877f..5ad4ca7aa 100644
--- a/src/multimedia/qmediaresourceset_p.h
+++ b/src/multimedia/qmediaresourceset_p.h
@@ -80,7 +80,7 @@ Q_SIGNALS:
     void availabilityChanged(bool available);
 
 protected:
-    QMediaPlayerResourceSetInterface(QObject *parent = 0);
+    QMediaPlayerResourceSetInterface(QObject *parent = nullptr);
 };
 
 QT_END_NAMESPACE
diff --git a/src/multimedia/qmediaserviceprovider.cpp b/src/multimedia/qmediaserviceprovider.cpp
index 21e34bd49..4166ff8eb 100644
--- a/src/multimedia/qmediaserviceprovider.cpp
+++ b/src/multimedia/qmediaserviceprovider.cpp
@@ -56,7 +56,7 @@ class QMediaServiceProviderHintPrivate : public QSharedData
 {
 public:
     QMediaServiceProviderHintPrivate(QMediaServiceProviderHint::Type type)
-        :type(type), cameraPosition(QCamera::UnspecifiedPosition), features(0)
+        :type(type), cameraPosition(QCamera::UnspecifiedPosition), features(nullptr)
     {
     }
 
@@ -309,7 +309,7 @@ class QPluginServiceProvider : public QMediaServiceProvider
         QByteArray type;
         QMediaServiceProviderPlugin *plugin;
 
-        MediaServiceData() : plugin(0) { }
+        MediaServiceData() : plugin(nullptr) { }
     };
 
     QMap<const QMediaService*, MediaServiceData> mediaServiceData;
@@ -329,7 +329,7 @@ public:
         }
 
         if (!plugins.isEmpty()) {
-            QMediaServiceProviderPlugin *plugin = 0;
+            QMediaServiceProviderPlugin *plugin = nullptr;
 
             switch (hint.type()) {
             case QMediaServiceProviderHint::Null:
@@ -423,9 +423,9 @@ public:
                 break;
             }
 
-            if (plugin != 0) {
+            if (plugin != nullptr) {
                 QMediaService *service = plugin->create(key);
-                if (service != 0) {
+                if (service != nullptr) {
                     MediaServiceData d;
                     d.type = type;
                     d.plugin = plugin;
@@ -437,15 +437,15 @@ public:
         }
 
         qWarning() << "defaultServiceProvider::requestService(): no service found for -" << key;
-        return 0;
+        return nullptr;
     }
 
     void releaseService(QMediaService *service) override
     {
-        if (service != 0) {
+        if (service != nullptr) {
             MediaServiceData d = mediaServiceData.take(service);
 
-            if (d.plugin != 0)
+            if (d.plugin != nullptr)
                 d.plugin->release(service);
         }
     }
@@ -704,7 +704,7 @@ QMediaServiceProviderHint::Features QMediaServiceProvider::supportedFeatures(con
 {
     Q_UNUSED(service);
 
-    return QMediaServiceProviderHint::Features(0);
+    return QMediaServiceProviderHint::Features(nullptr);
 }
 
 /*!
@@ -798,7 +798,7 @@ int QMediaServiceProvider::cameraOrientation(const QByteArray &device) const
     return 0;
 }
 
-static QMediaServiceProvider *qt_defaultMediaServiceProvider = 0;
+static QMediaServiceProvider *qt_defaultMediaServiceProvider = nullptr;
 
 /*!
     Sets a media service \a provider as the default.
@@ -817,7 +817,7 @@ void QMediaServiceProvider::setDefaultServiceProvider(QMediaServiceProvider *pro
 */
 QMediaServiceProvider *QMediaServiceProvider::defaultServiceProvider()
 {
-    return qt_defaultMediaServiceProvider != 0
+    return qt_defaultMediaServiceProvider != nullptr
             ? qt_defaultMediaServiceProvider
             : static_cast<QMediaServiceProvider *>(pluginProvider());
 }
diff --git a/src/multimedia/radio/qradiodata.cpp b/src/multimedia/radio/qradiodata.cpp
index 9ed6cb522..d71488b52 100644
--- a/src/multimedia/radio/qradiodata.cpp
+++ b/src/multimedia/radio/qradiodata.cpp
@@ -95,14 +95,14 @@ public:
 };
 
 QRadioDataPrivate::QRadioDataPrivate()
-    : mediaObject(0)
-    , control(0)
+    : mediaObject(nullptr)
+    , control(nullptr)
 {}
 
 void QRadioDataPrivate::_q_serviceDestroyed()
 {
-    mediaObject = 0;
-    control = 0;
+    mediaObject = nullptr;
+    control = nullptr;
 }
 
 /*!
@@ -211,8 +211,8 @@ bool QRadioData::setMediaObject(QMediaObject *mediaObject)
     }
 
     // without QRadioDataControl discard the media object
-    d->mediaObject = 0;
-    d->control = 0;
+    d->mediaObject = nullptr;
+    d->control = nullptr;
 
     return false;
 }
@@ -228,7 +228,7 @@ QMultimedia::AvailabilityStatus QRadioData::availability() const
 {
     Q_D(const QRadioData);
 
-    if (d->control == 0)
+    if (d->control == nullptr)
         return QMultimedia::ServiceMissing;
 
     return d->mediaObject->availability();
@@ -244,7 +244,7 @@ QString QRadioData::stationId() const
 {
     Q_D(const QRadioData);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->stationId();
     return QString();
 }
@@ -259,7 +259,7 @@ QRadioData::ProgramType QRadioData::programType() const
 {
     Q_D(const QRadioData);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->programType();
 
     return QRadioData::Undefined;
@@ -275,7 +275,7 @@ QString QRadioData::programTypeName() const
 {
     Q_D(const QRadioData);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->programTypeName();
     return QString();
 }
@@ -290,7 +290,7 @@ QString QRadioData::stationName() const
 {
     Q_D(const QRadioData);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->stationName();
     return QString();
 }
@@ -305,7 +305,7 @@ QString QRadioData::radioText() const
 {
     Q_D(const QRadioData);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->radioText();
     return QString();
 }
@@ -320,7 +320,7 @@ bool QRadioData::isAlternativeFrequenciesEnabled() const
 {
     Q_D(const QRadioData);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->isAlternativeFrequenciesEnabled();
     return false;
 }
@@ -329,7 +329,7 @@ void QRadioData::setAlternativeFrequenciesEnabled( bool enabled )
 {
     Q_D(const QRadioData);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->setAlternativeFrequenciesEnabled(enabled);
 }
 
@@ -343,7 +343,7 @@ QRadioData::Error QRadioData::error() const
 {
     Q_D(const QRadioData);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->error();
     return QRadioData::ResourceError;
 }
@@ -357,7 +357,7 @@ QString QRadioData::errorString() const
 {
     Q_D(const QRadioData);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->errorString();
     return QString();
 }
diff --git a/src/multimedia/radio/qradiotuner.cpp b/src/multimedia/radio/qradiotuner.cpp
index 3206b4ee5..cc9abdbf8 100644
--- a/src/multimedia/radio/qradiotuner.cpp
+++ b/src/multimedia/radio/qradiotuner.cpp
@@ -88,7 +88,7 @@ Q_CONSTRUCTOR_FUNCTION(qRegisterRadioTunerMetaTypes)
 class QRadioTunerPrivate : public QMediaObjectPrivate
 {
 public:
-    QRadioTunerPrivate():provider(0), control(0), radioData(0) {}
+    QRadioTunerPrivate():provider(nullptr), control(nullptr), radioData(nullptr) {}
     QMediaServiceProvider *provider;
     QRadioTunerControl* control;
     QRadioData *radioData;
@@ -112,9 +112,9 @@ QRadioTuner::QRadioTuner(QObject *parent):
 
     d->provider = QMediaServiceProvider::defaultServiceProvider();
 
-    if (d->service != 0) {
+    if (d->service != nullptr) {
         d->control = qobject_cast<QRadioTunerControl*>(d->service->requestControl(QRadioTunerControl_iid));
-        if (d->control != 0) {
+        if (d->control != nullptr) {
             connect(d->control, SIGNAL(stateChanged(QRadioTuner::State)), SIGNAL(stateChanged(QRadioTuner::State)));
             connect(d->control, SIGNAL(bandChanged(QRadioTuner::Band)), SIGNAL(bandChanged(QRadioTuner::Band)));
             connect(d->control, SIGNAL(frequencyChanged(int)), SIGNAL(frequencyChanged(int)));
@@ -154,7 +154,7 @@ QRadioTuner::~QRadioTuner()
 */
 QMultimedia::AvailabilityStatus QRadioTuner::availability() const
 {
-    if (d_func()->control == 0)
+    if (d_func()->control == nullptr)
         return QMultimedia::ServiceMissing;
 
     if (!d_func()->control->isAntennaConnected())
@@ -187,7 +187,7 @@ QRadioTuner::Band QRadioTuner::band() const
 {
     Q_D(const QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->band();
 
     return QRadioTuner::FM;
@@ -202,7 +202,7 @@ int QRadioTuner::frequency() const
 {
     Q_D(const QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->frequency();
 
     return 0;
@@ -217,7 +217,7 @@ int QRadioTuner::frequencyStep(QRadioTuner::Band band) const
 {
     Q_D(const QRadioTuner);
 
-    if(d->control != 0)
+    if (d->control != nullptr)
         return d->control->frequencyStep(band);
 
     return 0;
@@ -231,7 +231,7 @@ QPair<int,int> QRadioTuner::frequencyRange(QRadioTuner::Band band) const
 {
     Q_D(const QRadioTuner);
 
-    if(d->control != 0)
+    if (d->control != nullptr)
         return d->control->frequencyRange(band);
 
     return qMakePair<int,int>(0,0);
@@ -246,7 +246,7 @@ bool QRadioTuner::isStereo() const
 {
     Q_D(const QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->isStereo();
 
     return false;
@@ -262,7 +262,7 @@ QRadioTuner::StereoMode QRadioTuner::stereoMode() const
 {
     Q_D(const QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->stereoMode();
 
     return QRadioTuner::Auto;
@@ -272,7 +272,7 @@ void QRadioTuner::setStereoMode(QRadioTuner::StereoMode mode)
 {
     Q_D(QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->setStereoMode(mode);
 }
 
@@ -286,7 +286,7 @@ bool QRadioTuner::isBandSupported(QRadioTuner::Band band) const
 {
     Q_D(const QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->isBandSupported(band);
 
     return false;
@@ -300,7 +300,7 @@ void QRadioTuner::start()
 {
     Q_D(const QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d->control->start();
 }
 
@@ -312,7 +312,7 @@ void QRadioTuner::stop()
 {
     Q_D(const QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d->control->stop();
 }
 
@@ -325,7 +325,7 @@ int QRadioTuner::signalStrength() const
 {
     Q_D(const QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->signalStrength();
 
     return 0;
@@ -341,7 +341,7 @@ int QRadioTuner::volume() const
 {
     Q_D(const QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->volume();
 
     return 0;
@@ -356,7 +356,7 @@ bool QRadioTuner::isMuted() const
 {
     Q_D(const QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->isMuted();
 
     return false;
@@ -372,7 +372,7 @@ void QRadioTuner::setBand(QRadioTuner::Band band)
 {
     Q_D(QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d->control->setBand(band);
 }
 
@@ -387,7 +387,7 @@ void QRadioTuner::setFrequency(int frequency)
 {
     Q_D(QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d->control->setFrequency(frequency);
 }
 
@@ -395,7 +395,7 @@ void QRadioTuner::setVolume(int volume)
 {
     Q_D(QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d->control->setVolume(volume);
 }
 
@@ -403,7 +403,7 @@ void QRadioTuner::setMuted(bool muted)
 {
     Q_D(QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d->control->setMuted(muted);
 }
 
@@ -418,7 +418,7 @@ bool QRadioTuner::isSearching() const
 {
     Q_D(const QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->isSearching();
 
     return false;
@@ -432,7 +432,7 @@ bool QRadioTuner::isAntennaConnected() const
 {
     Q_D(const QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->isAntennaConnected();
 
     return false;
@@ -448,7 +448,7 @@ void QRadioTuner::searchForward()
 {
     Q_D(QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d->control->searchForward();
 }
 
@@ -462,7 +462,7 @@ void QRadioTuner::searchBackward()
 {
     Q_D(QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d->control->searchBackward();
 }
 
@@ -490,7 +490,7 @@ void QRadioTuner::searchAllStations(QRadioTuner::SearchMode searchMode)
 {
     Q_D(const QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d->control->searchAllStations(searchMode);
 }
 
@@ -504,7 +504,7 @@ void QRadioTuner::cancelSearch()
 {
     Q_D(QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         d->control->cancelSearch();
 }
 
@@ -518,7 +518,7 @@ QRadioTuner::Error QRadioTuner::error() const
 {
     Q_D(const QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->error();
 
     return QRadioTuner::ResourceError;
@@ -534,7 +534,7 @@ QString QRadioTuner::errorString() const
 {
     Q_D(const QRadioTuner);
 
-    if (d->control != 0)
+    if (d->control != nullptr)
         return d->control->errorString();
 
     return QString();
diff --git a/src/multimedia/recording/qaudiorecorder.cpp b/src/multimedia/recording/qaudiorecorder.cpp
index 1d3e5ba7f..dcbdabc17 100644
--- a/src/multimedia/recording/qaudiorecorder.cpp
+++ b/src/multimedia/recording/qaudiorecorder.cpp
@@ -96,11 +96,11 @@ public:
     void initControls()
     {
         Q_Q(QAudioRecorder);
-        audioInputSelector = 0;
+        audioInputSelector = nullptr;
 
-        QMediaService *service = mediaObject ? mediaObject->service() : 0;
+        QMediaService *service = mediaObject ? mediaObject->service() : nullptr;
 
-        if (service != 0)
+        if (service != nullptr)
             audioInputSelector = qobject_cast<QAudioInputSelectorControl*>(service->requestControl(QAudioInputSelectorControl_iid));
 
         if (audioInputSelector) {
@@ -113,8 +113,8 @@ public:
 
     QAudioRecorderPrivate():
         QMediaRecorderPrivate(),
-        provider(0),
-        audioInputSelector(0) {}
+        provider(nullptr),
+        audioInputSelector(nullptr) {}
 
     QMediaServiceProvider *provider;
     QAudioInputSelectorControl   *audioInputSelector;
@@ -128,7 +128,7 @@ public:
 */
 
 QAudioRecorder::QAudioRecorder(QObject *parent):
-    QMediaRecorder(*new QAudioRecorderPrivate, 0, parent)
+    QMediaRecorder(*new QAudioRecorderPrivate, nullptr, parent)
 {
     Q_D(QAudioRecorder);
     d->provider = QMediaServiceProvider::defaultServiceProvider();
@@ -145,9 +145,9 @@ QAudioRecorder::QAudioRecorder(QObject *parent):
 QAudioRecorder::~QAudioRecorder()
 {
     Q_D(QAudioRecorder);
-    QMediaService *service = d->mediaObject ? d->mediaObject->service() : 0;
+    QMediaService *service = d->mediaObject ? d->mediaObject->service() : nullptr;
     QMediaObject *mediaObject = d->mediaObject;
-    setMediaObject(0);
+    setMediaObject(nullptr);
 
     if (service && d->audioInputSelector)
         service->releaseControl(d->audioInputSelector);
diff --git a/src/multimedia/recording/qmediarecorder.cpp b/src/multimedia/recording/qmediarecorder.cpp
index 3bab3dada..2b7729481 100644
--- a/src/multimedia/recording/qmediarecorder.cpp
+++ b/src/multimedia/recording/qmediarecorder.cpp
@@ -89,15 +89,15 @@ Q_CONSTRUCTOR_FUNCTION(qRegisterMediaRecorderMetaTypes)
 
 
 QMediaRecorderPrivate::QMediaRecorderPrivate():
-     mediaObject(0),
-     control(0),
-     formatControl(0),
-     audioControl(0),
-     videoControl(0),
-     metaDataControl(0),
-     availabilityControl(0),
+     mediaObject(nullptr),
+     control(nullptr),
+     formatControl(nullptr),
+     audioControl(nullptr),
+     videoControl(nullptr),
+     metaDataControl(nullptr),
+     availabilityControl(nullptr),
      settingsChanged(false),
-     notifyTimer(0),
+     notifyTimer(nullptr),
      state(QMediaRecorder::StoppedState),
      error(QMediaRecorder::NoError)
 {
@@ -135,13 +135,13 @@ void QMediaRecorderPrivate::_q_error(int error, const QString &errorString)
 
 void QMediaRecorderPrivate::_q_serviceDestroyed()
 {
-    mediaObject = 0;
-    control = 0;
-    formatControl = 0;
-    audioControl = 0;
-    videoControl = 0;
-    metaDataControl = 0;
-    availabilityControl = 0;
+    mediaObject = nullptr;
+    control = nullptr;
+    formatControl = nullptr;
+    audioControl = nullptr;
+    videoControl = nullptr;
+    metaDataControl = nullptr;
+    availabilityControl = nullptr;
     settingsChanged = true;
 }
 
@@ -328,12 +328,12 @@ bool QMediaRecorder::setMediaObject(QMediaObject *object)
         }
     }
 
-    d->control = 0;
-    d->formatControl = 0;
-    d->audioControl = 0;
-    d->videoControl = 0;
-    d->metaDataControl = 0;
-    d->availabilityControl = 0;
+    d->control = nullptr;
+    d->formatControl = nullptr;
+    d->audioControl = nullptr;
+    d->videoControl = nullptr;
+    d->metaDataControl = nullptr;
+    d->availabilityControl = nullptr;
 
     d->mediaObject = object;
 
@@ -407,7 +407,7 @@ bool QMediaRecorder::setMediaObject(QMediaObject *object)
             }
         }
 
-        d->mediaObject = 0;
+        d->mediaObject = nullptr;
         return false;
     }
 
@@ -453,7 +453,7 @@ bool QMediaRecorder::isAvailable() const
 */
 QMultimedia::AvailabilityStatus QMediaRecorder::availability() const
 {
-    if (d_func()->control == NULL)
+    if (d_func()->control == nullptr)
         return QMultimedia::ServiceMissing;
 
     if (d_func()->availabilityControl)
diff --git a/src/multimedia/video/qabstractvideobuffer.cpp b/src/multimedia/video/qabstractvideobuffer.cpp
index 50e38a98c..f0dd6d2eb 100644
--- a/src/multimedia/video/qabstractvideobuffer.cpp
+++ b/src/multimedia/video/qabstractvideobuffer.cpp
@@ -126,7 +126,7 @@ int QAbstractVideoBufferPrivate::map(
     Constructs an abstract video buffer of the given \a type.
 */
 QAbstractVideoBuffer::QAbstractVideoBuffer(HandleType type)
-    : d_ptr(0)
+    : d_ptr(nullptr)
     , m_type(type)
 {
 }
@@ -328,7 +328,7 @@ uchar *QAbstractPlanarVideoBuffer::map(MapMode mode, int *numBytes, int *bytesPe
             *bytesPerLine = strides[0];
         return data[0];
     } else {
-        return 0;
+        return nullptr;
     }
 }
 
diff --git a/src/multimedia/video/qabstractvideobuffer_p.h b/src/multimedia/video/qabstractvideobuffer_p.h
index 9e3ced9b5..4877d3120 100644
--- a/src/multimedia/video/qabstractvideobuffer_p.h
+++ b/src/multimedia/video/qabstractvideobuffer_p.h
@@ -64,7 +64,7 @@ class QAbstractVideoBufferPrivate
 {
 public:
     QAbstractVideoBufferPrivate()
-        : q_ptr(0)
+        : q_ptr(nullptr)
     {}
 
     virtual ~QAbstractVideoBufferPrivate()
diff --git a/src/multimedia/video/qimagevideobuffer.cpp b/src/multimedia/video/qimagevideobuffer.cpp
index f407e02d0..28dacefc6 100644
--- a/src/multimedia/video/qimagevideobuffer.cpp
+++ b/src/multimedia/video/qimagevideobuffer.cpp
@@ -96,7 +96,7 @@ uchar *QImageVideoBuffer::map(MapMode mode, int *numBytes, int *bytesPerLine)
 
         return d->image.bits();
     } else {
-        return 0;
+        return nullptr;
     }
 }
 
diff --git a/src/multimedia/video/qmemoryvideobuffer.cpp b/src/multimedia/video/qmemoryvideobuffer.cpp
index 1b52bb7cd..e05210d9d 100644
--- a/src/multimedia/video/qmemoryvideobuffer.cpp
+++ b/src/multimedia/video/qmemoryvideobuffer.cpp
@@ -112,7 +112,7 @@ uchar *QMemoryVideoBuffer::map(MapMode mode, int *numBytes, int *bytesPerLine)
 
         return reinterpret_cast<uchar *>(d->data.data());
     } else {
-        return 0;
+        return nullptr;
     }
 }
 
diff --git a/src/multimedia/video/qvideoframe.cpp b/src/multimedia/video/qvideoframe.cpp
index 7b1998afc..867bf1092 100644
--- a/src/multimedia/video/qvideoframe.cpp
+++ b/src/multimedia/video/qvideoframe.cpp
@@ -75,7 +75,7 @@ public:
         , planeCount(0)
         , pixelFormat(QVideoFrame::Format_Invalid)
         , fieldType(QVideoFrame::ProgressiveFrame)
-        , buffer(0)
+        , buffer(nullptr)
         , mappedCount(0)
     {
         memset(data, 0, sizeof(data));
@@ -90,7 +90,7 @@ public:
         , planeCount(0)
         , pixelFormat(format)
         , fieldType(QVideoFrame::ProgressiveFrame)
-        , buffer(0)
+        , buffer(nullptr)
         , mappedCount(0)
     {
         memset(data, 0, sizeof(data));
@@ -412,7 +412,7 @@ QVideoFrame::~QVideoFrame()
 */
 bool QVideoFrame::isValid() const
 {
-    return d->buffer != 0;
+    return d->buffer != nullptr;
 }
 
 /*!
@@ -488,7 +488,7 @@ void QVideoFrame::setFieldType(QVideoFrame::FieldType field)
 
 bool QVideoFrame::isMapped() const
 {
-    return d->buffer != 0 && d->buffer->mapMode() != QAbstractVideoBuffer::NotMapped;
+    return d->buffer != nullptr && d->buffer->mapMode() != QAbstractVideoBuffer::NotMapped;
 }
 
 /*!
@@ -507,7 +507,7 @@ bool QVideoFrame::isMapped() const
 */
 bool QVideoFrame::isWritable() const
 {
-    return d->buffer != 0 && (d->buffer->mapMode() & QAbstractVideoBuffer::WriteOnly);
+    return d->buffer != nullptr && (d->buffer->mapMode() & QAbstractVideoBuffer::WriteOnly);
 }
 
 /*!
@@ -523,7 +523,7 @@ bool QVideoFrame::isWritable() const
 */
 bool QVideoFrame::isReadable() const
 {
-    return d->buffer != 0 && (d->buffer->mapMode() & QAbstractVideoBuffer::ReadOnly);
+    return d->buffer != nullptr && (d->buffer->mapMode() & QAbstractVideoBuffer::ReadOnly);
 }
 
 /*!
@@ -533,7 +533,7 @@ bool QVideoFrame::isReadable() const
 */
 QAbstractVideoBuffer::MapMode QVideoFrame::mapMode() const
 {
-    return d->buffer != 0 ? d->buffer->mapMode() : QAbstractVideoBuffer::NotMapped;
+    return d->buffer != nullptr ? d->buffer->mapMode() : QAbstractVideoBuffer::NotMapped;
 }
 
 /*!
@@ -587,7 +587,7 @@ bool QVideoFrame::map(QAbstractVideoBuffer::MapMode mode)
         }
     }
 
-    Q_ASSERT(d->data[0] == 0);
+    Q_ASSERT(d->data[0] == nullptr);
     Q_ASSERT(d->bytesPerLine[0] == 0);
     Q_ASSERT(d->planeCount == 0);
     Q_ASSERT(d->mappedBytes == 0);
@@ -767,7 +767,7 @@ uchar *QVideoFrame::bits()
 */
 uchar *QVideoFrame::bits(int plane)
 {
-    return plane >= 0 && plane < d->planeCount ? d->data[plane] : 0;
+    return plane >= 0 && plane < d->planeCount ? d->data[plane] : nullptr;
 }
 
 /*!
@@ -798,7 +798,7 @@ const uchar *QVideoFrame::bits() const
 */
 const uchar *QVideoFrame::bits(int plane) const
 {
-    return plane >= 0 && plane < d->planeCount ?  d->data[plane] : 0;
+    return plane >= 0 && plane < d->planeCount ?  d->data[plane] : nullptr;
 }
 
 /*!
@@ -836,7 +836,7 @@ int QVideoFrame::planeCount() const
 */
 QVariant QVideoFrame::handle() const
 {
-    return d->buffer != 0 ? d->buffer->handle() : QVariant();
+    return d->buffer != nullptr ? d->buffer->handle() : QVariant();
 }
 
 /*!
diff --git a/src/multimedia/video/qvideooutputorientationhandler_p.h b/src/multimedia/video/qvideooutputorientationhandler_p.h
index b5cfc089b..d04a781ab 100644
--- a/src/multimedia/video/qvideooutputorientationhandler_p.h
+++ b/src/multimedia/video/qvideooutputorientationhandler_p.h
@@ -61,7 +61,7 @@ class Q_MULTIMEDIA_EXPORT QVideoOutputOrientationHandler : public QObject
 {
     Q_OBJECT
 public:
-    explicit QVideoOutputOrientationHandler(QObject *parent = 0);
+    explicit QVideoOutputOrientationHandler(QObject *parent = nullptr);
 
     int currentOrientation() const;
 
diff --git a/src/multimedia/video/qvideoprobe.cpp b/src/multimedia/video/qvideoprobe.cpp
index b1531df63..f7995b297 100644
--- a/src/multimedia/video/qvideoprobe.cpp
+++ b/src/multimedia/video/qvideoprobe.cpp
@@ -161,7 +161,7 @@ bool QVideoProbe::setSource(QMediaObject *source)
         }
     }
 
-    return (!source || d->probee != 0);
+    return (!source || d->probee != nullptr);
 }
 
 /*!
@@ -179,7 +179,7 @@ bool QVideoProbe::setSource(QMediaObject *source)
  */
 bool QVideoProbe::setSource(QMediaRecorder *mediaRecorder)
 {
-    QMediaObject *source = mediaRecorder ? mediaRecorder->mediaObject() : 0;
+    QMediaObject *source = mediaRecorder ? mediaRecorder->mediaObject() : nullptr;
     bool result = setSource(source);
 
     if (!mediaRecorder)
@@ -198,7 +198,7 @@ bool QVideoProbe::setSource(QMediaRecorder *mediaRecorder)
  */
 bool QVideoProbe::isActive() const
 {
-    return d->probee != 0;
+    return d->probee != nullptr;
 }
 
 /*!
diff --git a/src/multimedia/video/qvideosurfaceoutput.cpp b/src/multimedia/video/qvideosurfaceoutput.cpp
index feb956dd0..ebc9e1cb6 100644
--- a/src/multimedia/video/qvideosurfaceoutput.cpp
+++ b/src/multimedia/video/qvideosurfaceoutput.cpp
@@ -55,7 +55,7 @@ QVideoSurfaceOutput::QVideoSurfaceOutput(QObject*parent)
 QVideoSurfaceOutput::~QVideoSurfaceOutput()
 {
     if (m_control) {
-        m_control.data()->setSurface(0);
+        m_control.data()->setSurface(nullptr);
         m_service.data()->releaseControl(m_control.data());
     }
 }
@@ -76,7 +76,7 @@ void QVideoSurfaceOutput::setVideoSurface(QAbstractVideoSurface *surface)
 bool QVideoSurfaceOutput::setMediaObject(QMediaObject *object)
 {
     if (m_control) {
-        m_control.data()->setSurface(0);
+        m_control.data()->setSurface(nullptr);
         m_service.data()->releaseControl(m_control.data());
     }
     m_control.clear();
diff --git a/src/multimedia/video/qvideosurfaceoutput_p.h b/src/multimedia/video/qvideosurfaceoutput_p.h
index a1b24abbf..5d050bcb0 100644
--- a/src/multimedia/video/qvideosurfaceoutput_p.h
+++ b/src/multimedia/video/qvideosurfaceoutput_p.h
@@ -67,7 +67,7 @@ class QVideoSurfaceOutput : public QObject, public QMediaBindableInterface
     Q_OBJECT
     Q_INTERFACES(QMediaBindableInterface)
 public:
-    QVideoSurfaceOutput(QObject*parent = 0);
+    QVideoSurfaceOutput(QObject *parent = nullptr);
     ~QVideoSurfaceOutput();
 
     QMediaObject *mediaObject() const override;