Merge remote-tracking branch 'origin/5.5.0' into 5.5

Change-Id: I5a5b387b93a4b9dbaa9710e78fd7bf1ca09aa3b3

21 files changed, 122 insertions, 44 deletions

diff --git a/src/imports/multimedia/qdeclarativecamera.cpp b/src/imports/multimedia/qdeclarativecamera.cpp
index aac873b8e..c5d899e98 100644
--- a/src/imports/multimedia/qdeclarativecamera.cpp
+++ b/src/imports/multimedia/qdeclarativecamera.cpp
@@ -1094,8 +1094,8 @@ QJSValue QDeclarativeCamera::supportedViewfinderFrameRateRanges(const QSize &res
     int i = 0;
     Q_FOREACH (const QCamera::FrameRateRange &frameRateRange, frameRateRanges) {
         QJSValue range = engine->newObject();
-        range.setProperty(QStringLiteral("minimumFrameRate"), frameRateRange.first);
-        range.setProperty(QStringLiteral("maximumFrameRate"), frameRateRange.second);
+        range.setProperty(QStringLiteral("minimumFrameRate"), frameRateRange.minimumFrameRate);
+        range.setProperty(QStringLiteral("maximumFrameRate"), frameRateRange.maximumFrameRate);
         supportedFrameRateRanges.setProperty(i++, range);
     }
 
diff --git a/src/multimedia/camera/qcamera.cpp b/src/multimedia/camera/qcamera.cpp
index daee0a930..e70bed047 100644
--- a/src/multimedia/camera/qcamera.cpp
+++ b/src/multimedia/camera/qcamera.cpp
@@ -72,7 +72,7 @@ static bool qt_sizeLessThan(const QSize &s1, const QSize &s2)
 
 static bool qt_frameRateRangeLessThan(const QCamera::FrameRateRange &s1, const QCamera::FrameRateRange &s2)
 {
-    return s1.second < s2.second;
+    return s1.maximumFrameRate < s2.maximumFrameRate;
 }
 
 /*!
@@ -1028,15 +1028,29 @@ void QCamera::unlock()
 
 
 /*!
-    \typedef QCamera::FrameRateRange
+    \class QCamera::FrameRateRange
+    \inmodule QtMultimedia
+    \ingroup multimedia
+    \ingroup multimedia_camera
+    \since 5.5
+
+    \brief A FrameRateRange represents a range of frame rates as minimum and maximum rate.
 
-    This is a typedef for QPair<qreal, qreal>.
+    If the minimum frame rate is equal to the maximum frame rate, the frame rate is fixed.
+    If not, the actual frame rate fluctuates between the minimum and the maximum.
 
-    A frame rate range contains a minimum and a maximum frame rate, respectively the first and
-    second element of the pair. If the minimum frame rate is equal to the maximum frame rate, the
-    frame rate is fixed. If not, the actual frame rate fluctuates between the minimum and the maximum.
+    \sa QCamera::supportedViewfinderFrameRateRanges(), QCameraViewfinderSettings
 */
 
+/*!
+    \variable QCamera::FrameRateRange::minimumFrameRate
+    The minimum frame rate supported by the range, in frames per second.
+*/
+
+/*!
+    \variable QCamera::FrameRateRange::maximumFrameRate
+    The maximum frame rate supported by the range, in frames per second.
+*/
 
 /*!
     \enum QCamera::State
diff --git a/src/multimedia/camera/qcamera.h b/src/multimedia/camera/qcamera.h
index a50c38496..ea81c02c4 100644
--- a/src/multimedia/camera/qcamera.h
+++ b/src/multimedia/camera/qcamera.h
@@ -77,7 +77,21 @@ class Q_MULTIMEDIA_EXPORT QCamera : public QMediaObject
     Q_ENUMS(LockType)
     Q_ENUMS(Position)
 public:
-    typedef QPair<qreal, qreal> FrameRateRange;
+    struct FrameRateRange
+    {
+        Q_DECL_CONSTEXPR FrameRateRange() Q_DECL_NOTHROW
+            : minimumFrameRate(0)
+            , maximumFrameRate(0)
+        { }
+
+        Q_DECL_CONSTEXPR FrameRateRange(qreal minimum, qreal maximum) Q_DECL_NOTHROW
+            : minimumFrameRate(minimum)
+            , maximumFrameRate(maximum)
+        { }
+
+        qreal minimumFrameRate;
+        qreal maximumFrameRate;
+    };
 
     enum Status {
         UnavailableStatus,
@@ -237,6 +251,14 @@ private:
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(QCamera::LockTypes)
 
+Q_DECL_CONSTEXPR Q_INLINE_TEMPLATE bool operator==(const QCamera::FrameRateRange &r1, const QCamera::FrameRateRange &r2) Q_DECL_NOTHROW
+{ return r1.minimumFrameRate == r2.minimumFrameRate && r1.maximumFrameRate == r2.maximumFrameRate; }
+
+Q_DECL_CONSTEXPR Q_INLINE_TEMPLATE bool operator!=(const QCamera::FrameRateRange &r1, const QCamera::FrameRateRange &r2) Q_DECL_NOTHROW
+{ return !(r1 == r2); }
+
+Q_DECLARE_TYPEINFO(QCamera::FrameRateRange, Q_PRIMITIVE_TYPE);
+
 QT_END_NAMESPACE
 
 Q_DECLARE_METATYPE(QCamera::State)
diff --git a/src/multimedia/camera/qcameraviewfindersettings.cpp b/src/multimedia/camera/qcameraviewfindersettings.cpp
index a6290cfb7..a92ee65ad 100644
--- a/src/multimedia/camera/qcameraviewfindersettings.cpp
+++ b/src/multimedia/camera/qcameraviewfindersettings.cpp
@@ -136,32 +136,35 @@ QCameraViewfinderSettings &QCameraViewfinderSettings::operator=(const QCameraVie
 }
 
 /*!
-    Determines if \a other is of equal value to a viewfinder settings object.
+    \relates QCameraViewfinderSettings
+    \since 5.5
+
+    Determines if \a lhs is of equal value to \a rhs.
 
     Returns true if the settings objects are of equal value, and false if they
     are not of equal value.
 */
-bool QCameraViewfinderSettings::operator==(const QCameraViewfinderSettings &other) const
+bool operator==(const QCameraViewfinderSettings &lhs, const QCameraViewfinderSettings &rhs) Q_DECL_NOTHROW
 {
-    return (d == other.d) ||
-           (d->isNull == other.d->isNull &&
-            d->resolution == other.d->resolution &&
-            qFuzzyCompare(d->minimumFrameRate, other.d->minimumFrameRate) &&
-            qFuzzyCompare(d->maximumFrameRate, other.d->maximumFrameRate) &&
-            d->pixelFormat == other.d->pixelFormat &&
-            d->pixelAspectRatio == other.d->pixelAspectRatio);
+    return (lhs.d == rhs.d) ||
+           (lhs.d->isNull == rhs.d->isNull &&
+            lhs.d->resolution == rhs.d->resolution &&
+            lhs.d->minimumFrameRate == rhs.d->minimumFrameRate &&
+            lhs.d->maximumFrameRate == rhs.d->maximumFrameRate &&
+            lhs.d->pixelFormat == rhs.d->pixelFormat &&
+            lhs.d->pixelAspectRatio == rhs.d->pixelAspectRatio);
 }
 
 /*!
-    Determines if \a other is of equal value to a viewfinder settings object.
+    \fn bool operator!=(const QCameraViewfinderSettings &lhs, const QCameraViewfinderSettings &rhs)
+    \relates QCameraViewfinderSettings
+    \since 5.5
+
+    Determines if \a lhs is of equal value to \a rhs.
 
     Returns true if the settings objects are not of equal value, and false if
     they are of equal value.
 */
-bool QCameraViewfinderSettings::operator!=(const QCameraViewfinderSettings &other) const
-{
-    return !(*this == other);
-}
 
 /*!
     Identifies if a viewfinder settings object is uninitalized.
diff --git a/src/multimedia/camera/qcameraviewfindersettings.h b/src/multimedia/camera/qcameraviewfindersettings.h
index bfb3d08d3..ce10b68a2 100644
--- a/src/multimedia/camera/qcameraviewfindersettings.h
+++ b/src/multimedia/camera/qcameraviewfindersettings.h
@@ -34,10 +34,12 @@
 #ifndef QCAMERAVIEWFINDERSETTINGS_H
 #define QCAMERAVIEWFINDERSETTINGS_H
 
-#include <QtCore/qsharedpointer.h>
 #include <QtMultimedia/qtmultimediadefs.h>
 #include <QtMultimedia/qvideoframe.h>
 
+#include <QtCore/qshareddata.h>
+#include <QtCore/qsize.h>
+
 QT_BEGIN_NAMESPACE
 
 class QCameraViewfinderSettingsPrivate;
@@ -51,9 +53,14 @@ public:
     ~QCameraViewfinderSettings();
 
     QCameraViewfinderSettings& operator=(const QCameraViewfinderSettings &other);
-    bool operator==(const QCameraViewfinderSettings &other) const;
-    bool operator!=(const QCameraViewfinderSettings &other) const;
+#ifdef Q_COMPILER_RVALUE_REFS
+    QCameraViewfinderSettings &operator=(QCameraViewfinderSettings &&other) Q_DECL_NOTHROW
+    { swap(other); return *this; }
+#endif
+
+    void swap(QCameraViewfinderSettings &other) Q_DECL_NOTHROW { d.swap(other.d); }
 
+    friend Q_MULTIMEDIA_EXPORT bool operator==(const QCameraViewfinderSettings &lhs, const QCameraViewfinderSettings &rhs) Q_DECL_NOTHROW;
     bool isNull() const;
 
     QSize resolution() const;
@@ -78,6 +85,11 @@ public:
 private:
     QSharedDataPointer<QCameraViewfinderSettingsPrivate> d;
 };
+Q_DECLARE_SHARED(QCameraViewfinderSettings)
+
+inline bool operator!=(const QCameraViewfinderSettings &lhs, const QCameraViewfinderSettings &rhs) Q_DECL_NOTHROW
+{ return !operator==(lhs, rhs); }
+
 
 QT_END_NAMESPACE
 
diff --git a/src/multimedia/video/qabstractvideofilter.h b/src/multimedia/video/qabstractvideofilter.h
index f0175be12..77f035e0a 100644
--- a/src/multimedia/video/qabstractvideofilter.h
+++ b/src/multimedia/video/qabstractvideofilter.h
@@ -62,7 +62,7 @@ class Q_MULTIMEDIA_EXPORT QAbstractVideoFilter : public QObject
     Q_PROPERTY(bool active READ isActive WRITE setActive NOTIFY activeChanged)
 
 public:
-    QAbstractVideoFilter(QObject *parent = 0);
+    explicit QAbstractVideoFilter(QObject *parent = 0);
     ~QAbstractVideoFilter();
 
     bool isActive() const;
diff --git a/src/plugins/avfoundation/camera/avfcameraflashcontrol.mm b/src/plugins/avfoundation/camera/avfcameraflashcontrol.mm
index 0eef95e92..89c7a2eb6 100644
--- a/src/plugins/avfoundation/camera/avfcameraflashcontrol.mm
+++ b/src/plugins/avfoundation/camera/avfcameraflashcontrol.mm
@@ -157,7 +157,7 @@ void AVFCameraFlashControl::cameraStateChanged(QCamera::State newState)
 
 bool AVFCameraFlashControl::applyFlashSettings()
 {
-    Q_ASSERT(m_session->state() == QCamera::ActiveState);
+    Q_ASSERT(m_session->requestedState() == QCamera::ActiveState);
 
     AVCaptureDevice *captureDevice = m_session->videoCaptureDevice();
     if (!captureDevice) {
diff --git a/src/plugins/directshow/camera/dscamerasession.cpp b/src/plugins/directshow/camera/dscamerasession.cpp
index 87af9a6e3..a2586aa9d 100644
--- a/src/plugins/directshow/camera/dscamerasession.cpp
+++ b/src/plugins/directshow/camera/dscamerasession.cpp
@@ -789,7 +789,7 @@ void DSCameraSession::disconnectGraph()
 
 static bool qt_frameRateRangeGreaterThan(const QCamera::FrameRateRange &r1, const QCamera::FrameRateRange &r2)
 {
-    return r1.second > r2.second;
+    return r1.maximumFrameRate > r2.maximumFrameRate;
 }
 
 void DSCameraSession::updateSourceCapabilities()
@@ -896,8 +896,8 @@ void DSCameraSession::updateSourceCapabilities()
                 Q_FOREACH (const QCamera::FrameRateRange &frameRateRange, frameRateRanges) {
                     QCameraViewfinderSettings settings;
                     settings.setResolution(resolution);
-                    settings.setMinimumFrameRate(frameRateRange.first);
-                    settings.setMaximumFrameRate(frameRateRange.second);
+                    settings.setMinimumFrameRate(frameRateRange.minimumFrameRate);
+                    settings.setMaximumFrameRate(frameRateRange.maximumFrameRate);
                     settings.setPixelFormat(pixelFormat);
                     m_supportedViewfinderSettings.append(settings);
 
diff --git a/src/plugins/winrt/qwinrtabstractvideorenderercontrol.cpp b/src/plugins/winrt/qwinrtabstractvideorenderercontrol.cpp
index 2d0b5413a..aa0f721b3 100644
--- a/src/plugins/winrt/qwinrtabstractvideorenderercontrol.cpp
+++ b/src/plugins/winrt/qwinrtabstractvideorenderercontrol.cpp
@@ -56,7 +56,7 @@
 
 using namespace Microsoft::WRL;
 
-QT_USE_NAMESPACE
+QT_BEGIN_NAMESPACE
 
 #define BREAK_IF_FAILED(msg) RETURN_IF_FAILED(msg, break)
 #define CONTINUE_IF_FAILED(msg) RETURN_IF_FAILED(msg, continue)
@@ -408,3 +408,5 @@ void QWinRTAbstractVideoRendererControl::present()
     QVideoFrame frame(d->videoBuffer, d->format.frameSize(), d->format.pixelFormat());
     d->surface->present(frame);
 }
+
+QT_END_NAMESPACE
diff --git a/src/plugins/winrt/qwinrtcameracontrol.cpp b/src/plugins/winrt/qwinrtcameracontrol.cpp
index f5b75d9ab..9013416fe 100644
--- a/src/plugins/winrt/qwinrtcameracontrol.cpp
+++ b/src/plugins/winrt/qwinrtcameracontrol.cpp
@@ -68,7 +68,7 @@ using namespace ABI::Windows::Media::Devices;
 using namespace ABI::Windows::Media::MediaProperties;
 using namespace ABI::Windows::Storage::Streams;
 
-QT_USE_NAMESPACE
+QT_BEGIN_NAMESPACE
 
 #define RETURN_VOID_AND_EMIT_ERROR(msg) \
     if (FAILED(hr)) { \
@@ -134,6 +134,7 @@ public:
         hr = deviceInfo->get_SystemSku(deviceModel.GetAddressOf());
         Q_ASSERT_SUCCEEDED(hr);
         m_flags |= bufferLockRequired(L"NOKIA RM-976", deviceModel);
+        m_flags |= bufferLockRequired(L"NOKIA RM-1019", deviceModel);
 #endif
     }
 
@@ -852,3 +853,5 @@ HRESULT QWinRTCameraControl::onRecordLimitationExceeded(IMediaCapture *)
     setState(QCamera::LoadedState);
     return S_OK;
 }
+
+QT_END_NAMESPACE
diff --git a/src/plugins/winrt/qwinrtcameraimagecapturecontrol.cpp b/src/plugins/winrt/qwinrtcameraimagecapturecontrol.cpp
index 5a1c27b5e..55f553778 100644
--- a/src/plugins/winrt/qwinrtcameraimagecapturecontrol.cpp
+++ b/src/plugins/winrt/qwinrtcameraimagecapturecontrol.cpp
@@ -65,7 +65,7 @@ using namespace ABI::Windows::Media::MediaProperties;
 using namespace ABI::Windows::Storage::Streams;
 using namespace ABI::Windows::Graphics::Imaging;
 
-QT_USE_NAMESPACE
+QT_BEGIN_NAMESPACE
 
 #define wchar(str) reinterpret_cast<const wchar_t *>(str.utf16())
 
@@ -299,3 +299,5 @@ HRESULT QWinRTCameraImageCaptureControl::onCaptureCompleted(IAsyncAction *asyncI
 
     return S_OK;
 }
+
+QT_END_NAMESPACE
diff --git a/src/plugins/winrt/qwinrtcamerainfocontrol.cpp b/src/plugins/winrt/qwinrtcamerainfocontrol.cpp
index 69fc0a9a2..3e88fadc6 100644
--- a/src/plugins/winrt/qwinrtcamerainfocontrol.cpp
+++ b/src/plugins/winrt/qwinrtcamerainfocontrol.cpp
@@ -37,7 +37,7 @@
 #include "qwinrtcamerainfocontrol.h"
 #include "qwinrtvideodeviceselectorcontrol.h"
 
-QT_USE_NAMESPACE
+QT_BEGIN_NAMESPACE
 
 QWinRTCameraInfoControl::QWinRTCameraInfoControl(QObject *parent)
     : QCameraInfoControl(parent)
@@ -53,3 +53,5 @@ int QWinRTCameraInfoControl::cameraOrientation(const QString &deviceName) const
 {
     return QWinRTVideoDeviceSelectorControl::cameraOrientation(deviceName);
 }
+
+QT_END_NAMESPACE
diff --git a/src/plugins/winrt/qwinrtcameraservice.cpp b/src/plugins/winrt/qwinrtcameraservice.cpp
index dc9d6ee67..be67b4742 100644
--- a/src/plugins/winrt/qwinrtcameraservice.cpp
+++ b/src/plugins/winrt/qwinrtcameraservice.cpp
@@ -46,7 +46,7 @@
 #include <QtMultimedia/QVideoDeviceSelectorControl>
 #include <QtMultimedia/QImageEncoderControl>
 
-QT_USE_NAMESPACE
+QT_BEGIN_NAMESPACE
 
 class QWinRTCameraServicePrivate
 {
@@ -103,3 +103,5 @@ void QWinRTCameraService::releaseControl(QMediaControl *control)
 {
     Q_UNUSED(control);
 }
+
+QT_END_NAMESPACE
diff --git a/src/plugins/winrt/qwinrtcameravideorenderercontrol.cpp b/src/plugins/winrt/qwinrtcameravideorenderercontrol.cpp
index 3b8a38bbb..4878c55c9 100644
--- a/src/plugins/winrt/qwinrtcameravideorenderercontrol.cpp
+++ b/src/plugins/winrt/qwinrtcameravideorenderercontrol.cpp
@@ -45,7 +45,7 @@
 #include <wrl.h>
 using namespace Microsoft::WRL;
 
-QT_USE_NAMESPACE
+QT_BEGIN_NAMESPACE
 
 class D3DVideoBlitter
 {
@@ -210,3 +210,5 @@ void QWinRTCameraVideoRendererControl::discardBuffers()
     for (ComPtr<IMF2DBuffer> &buffer : d->buffers)
         buffer.Reset();
 }
+
+QT_END_NAMESPACE
diff --git a/src/plugins/winrt/qwinrtmediaplayercontrol.cpp b/src/plugins/winrt/qwinrtmediaplayercontrol.cpp
index 0402553d0..8954d4445 100644
--- a/src/plugins/winrt/qwinrtmediaplayercontrol.cpp
+++ b/src/plugins/winrt/qwinrtmediaplayercontrol.cpp
@@ -55,7 +55,7 @@
 #include <wrl.h>
 using namespace Microsoft::WRL;
 
-QT_USE_NAMESPACE
+QT_BEGIN_NAMESPACE
 
 #define QT_WINRT_MEDIAPLAYER_STREAM_ID "__qtmultimedia_winrt_player_stream"
 
@@ -892,3 +892,5 @@ void QWinRTMediaPlayerControl::finishRead()
     Q_D(QWinRTMediaPlayerControl);
     d->streamProvider->finishRead();
 }
+
+QT_END_NAMESPACE
diff --git a/src/plugins/winrt/qwinrtmediaplayercontrol.h b/src/plugins/winrt/qwinrtmediaplayercontrol.h
index 34abcc12c..54fdcc108 100644
--- a/src/plugins/winrt/qwinrtmediaplayercontrol.h
+++ b/src/plugins/winrt/qwinrtmediaplayercontrol.h
@@ -41,7 +41,7 @@
 
 struct IMFMediaEngineClassFactory;
 
-QT_USE_NAMESPACE
+QT_BEGIN_NAMESPACE
 
 class QVideoRendererControl;
 
@@ -96,4 +96,6 @@ private:
     Q_DECLARE_PRIVATE(QWinRTMediaPlayerControl)
 };
 
+QT_END_NAMESPACE
+
 #endif // QWINRTMEDIAPLAYERCONTROL_H
diff --git a/src/plugins/winrt/qwinrtmediaplayerservice.cpp b/src/plugins/winrt/qwinrtmediaplayerservice.cpp
index a6b3d1f37..dd7aaa117 100644
--- a/src/plugins/winrt/qwinrtmediaplayerservice.cpp
+++ b/src/plugins/winrt/qwinrtmediaplayerservice.cpp
@@ -47,7 +47,7 @@
 
 using namespace Microsoft::WRL;
 
-QT_USE_NAMESPACE
+QT_BEGIN_NAMESPACE
 
 class QWinRTMediaPlayerServicePrivate
 {
@@ -104,3 +104,5 @@ void QWinRTMediaPlayerService::releaseControl(QMediaControl *control)
     if (control == d->player)
         d->player->deleteLater();
 }
+
+QT_END_NAMESPACE
diff --git a/src/plugins/winrt/qwinrtplayerrenderercontrol.cpp b/src/plugins/winrt/qwinrtplayerrenderercontrol.cpp
index 5a8f4b87c..c37aac4e2 100644
--- a/src/plugins/winrt/qwinrtplayerrenderercontrol.cpp
+++ b/src/plugins/winrt/qwinrtplayerrenderercontrol.cpp
@@ -54,7 +54,7 @@
 #include <wrl.h>
 using namespace Microsoft::WRL;
 
-QT_USE_NAMESPACE
+QT_BEGIN_NAMESPACE
 
 template <typename T>
 class D3DDeviceLocker
@@ -149,3 +149,5 @@ bool QWinRTPlayerRendererControl::render(ID3D11Texture2D *texture)
     RETURN_FALSE_IF_FAILED("Failed to transfer video frame to DXGI surface");
     return true;
 }
+
+QT_END_NAMESPACE
diff --git a/src/plugins/winrt/qwinrtserviceplugin.cpp b/src/plugins/winrt/qwinrtserviceplugin.cpp
index fc0103d15..7237632a3 100644
--- a/src/plugins/winrt/qwinrtserviceplugin.cpp
+++ b/src/plugins/winrt/qwinrtserviceplugin.cpp
@@ -42,7 +42,7 @@
 #include "qwinrtcameraservice.h"
 #include "qwinrtvideodeviceselectorcontrol.h"
 
-QT_USE_NAMESPACE
+QT_BEGIN_NAMESPACE
 
 QMediaService *QWinRTServicePlugin::create(QString const &key)
 {
@@ -102,3 +102,5 @@ QByteArray QWinRTServicePlugin::defaultDevice(const QByteArray &service) const
 
     return QByteArray();
 }
+
+QT_END_NAMESPACE
diff --git a/src/plugins/winrt/qwinrtserviceplugin.h b/src/plugins/winrt/qwinrtserviceplugin.h
index 5f5cf559b..0f76f5059 100644
--- a/src/plugins/winrt/qwinrtserviceplugin.h
+++ b/src/plugins/winrt/qwinrtserviceplugin.h
@@ -39,7 +39,7 @@
 
 #include <QtMultimedia/QMediaServiceProviderPlugin>
 
-QT_USE_NAMESPACE
+QT_BEGIN_NAMESPACE
 
 class QWinRTServicePlugin : public QMediaServiceProviderPlugin
         , public QMediaServiceFeaturesInterface
@@ -68,4 +68,6 @@ public:
     QByteArray defaultDevice(const QByteArray &service) const Q_DECL_OVERRIDE;
 };
 
+QT_END_NAMESPACE
+
 #endif // QWINRTSERVICEPLUGIN_H
diff --git a/src/plugins/winrt/qwinrtvideodeviceselectorcontrol.cpp b/src/plugins/winrt/qwinrtvideodeviceselectorcontrol.cpp
index 582a9fc6d..8e806dcbf 100644
--- a/src/plugins/winrt/qwinrtvideodeviceselectorcontrol.cpp
+++ b/src/plugins/winrt/qwinrtvideodeviceselectorcontrol.cpp
@@ -55,7 +55,7 @@ typedef ITypedEventHandler<DeviceWatcher *, DeviceInformation *> DeviceInformati
 typedef ITypedEventHandler<DeviceWatcher *, DeviceInformationUpdate *> DeviceInformationUpdateHandler;
 typedef ITypedEventHandler<DeviceWatcher *, IInspectable *> DeviceEnumerationCompletedHandler;
 
-QT_USE_NAMESPACE
+QT_BEGIN_NAMESPACE
 
 static QString deviceName(IDeviceInformation *device)
 {
@@ -386,3 +386,5 @@ void QWinRTVideoDeviceSelectorControl::setSelectedDevice(int index)
         emit selectedDeviceChanged(deviceName(d->selectedDevice));
     }
 }
+
+QT_END_NAMESPACE