Merge 5.7 into 5.7.1

Change-Id: I72c166fd81e43c5a2a1b17a6e46e12d6c7389fc2

20 files changed, 197 insertions, 125 deletions

diff --git a/qtmultimedia.pro b/qtmultimedia.pro
index 98bb3152f..a49700d16 100644
--- a/qtmultimedia.pro
+++ b/qtmultimedia.pro
@@ -33,7 +33,7 @@ win32 {
     }
 
     qtCompileTest(resourcepolicy)
-    qtCompileTest(gpu_vivante)
+    contains(QT_CONFIG, opengles2):qtCompileTest(gpu_vivante)
 }
 
 load(qt_parts)
diff --git a/src/imports/multimedia/qdeclarativeplaylist.cpp b/src/imports/multimedia/qdeclarativeplaylist.cpp
index b338c33e5..549e0702d 100644
--- a/src/imports/multimedia/qdeclarativeplaylist.cpp
+++ b/src/imports/multimedia/qdeclarativeplaylist.cpp
@@ -94,9 +94,6 @@ void QDeclarativePlaylistItem::setSource(const QUrl &source)
     item's source URL can be accessed using the \c source role.
 
     \qml
-    import QtQuick 2.0
-    import QtMultimedia 5.6
-
     Item {
         width: 400;
         height: 300;
@@ -513,7 +510,7 @@ bool QDeclarativePlaylist::removeItem(int index)
 /*!
     \qmlmethod bool QtMultimedia::Playlist::removeItems(int start, int end)
 
-    Removes items in the playlist from \a start to \end inclusive.
+    Removes items in the playlist from \a start to \a end inclusive.
 
     Returns true if the items are removed successfully.
 
diff --git a/src/multimedia/audio/qaudioinput.cpp b/src/multimedia/audio/qaudioinput.cpp
index bc6b6215b..07165240b 100644
--- a/src/multimedia/audio/qaudioinput.cpp
+++ b/src/multimedia/audio/qaudioinput.cpp
@@ -338,7 +338,8 @@ int QAudioInput::notifyInterval() const
 */
 void QAudioInput::setVolume(qreal volume)
 {
-    d->setVolume(volume);
+    qreal v = qBound(qreal(0.0), volume, qreal(1.0));
+    d->setVolume(v);
 }
 
 /*!
diff --git a/src/multimedia/audio/qaudiooutput.cpp b/src/multimedia/audio/qaudiooutput.cpp
index 585855ace..e96d24dd7 100644
--- a/src/multimedia/audio/qaudiooutput.cpp
+++ b/src/multimedia/audio/qaudiooutput.cpp
@@ -355,7 +355,8 @@ QAudio::State QAudioOutput::state() const
 */
 void QAudioOutput::setVolume(qreal volume)
 {
-    d->setVolume(volume);
+    qreal v = qBound(qreal(0.0), volume, qreal(1.0));
+    d->setVolume(v);
 }
 
 /*!
diff --git a/src/multimedia/audio/qsoundeffect.cpp b/src/multimedia/audio/qsoundeffect.cpp
index f653de86e..f7237679b 100644
--- a/src/multimedia/audio/qsoundeffect.cpp
+++ b/src/multimedia/audio/qsoundeffect.cpp
@@ -279,11 +279,7 @@ qreal QSoundEffect::volume() const
  */
 void QSoundEffect::setVolume(qreal volume)
 {
-    if (volume < qreal(0.0) || volume > qreal(1.0)) {
-        qWarning("SoundEffect: volume should be between 0.0 and 1.0");
-        return;
-    }
-
+    volume = qBound(qreal(0.0), volume, qreal(1.0));
     if (qFuzzyCompare(d->volume(), volume))
         return;
 
diff --git a/src/multimedia/audio/qsoundeffect_pulse_p.cpp b/src/multimedia/audio/qsoundeffect_pulse_p.cpp
index 6e4aadd0b..fcf4fee35 100644
--- a/src/multimedia/audio/qsoundeffect_pulse_p.cpp
+++ b/src/multimedia/audio/qsoundeffect_pulse_p.cpp
@@ -443,7 +443,11 @@ void QSoundEffectPrivate::setSource(const QUrl &url)
     if (m_pulseStream && !pa_stream_is_corked(m_pulseStream)) {
         pa_stream_set_write_callback(m_pulseStream, 0, 0);
         pa_stream_set_underflow_callback(m_pulseStream, 0, 0);
-        pa_operation_unref(pa_stream_cork(m_pulseStream, 1, 0, 0));
+        pa_operation *op = pa_stream_cork(m_pulseStream, 1, 0, 0);
+        if (op)
+            pa_operation_unref(op);
+        else
+            qWarning("QSoundEffect(pulseaudio): failed to cork stream");
     }
     setPlaying(false);
 
@@ -625,7 +629,11 @@ void QSoundEffectPrivate::emptyStream(EmptyStreamOptions options)
     m_emptying = true;
     pa_stream_set_write_callback(m_pulseStream, 0, 0);
     pa_stream_set_underflow_callback(m_pulseStream, 0, 0);
-    pa_operation_unref(pa_stream_flush(m_pulseStream, flushCompleteCb, m_ref->getRef()));
+    pa_operation *op = pa_stream_flush(m_pulseStream, flushCompleteCb, m_ref->getRef());
+    if (op)
+        pa_operation_unref(op);
+    else
+        qWarning("QSoundEffect(pulseaudio): failed to flush stream");
 }
 
 void QSoundEffectPrivate::emptyComplete(void *stream, bool reload)
@@ -637,8 +645,13 @@ void QSoundEffectPrivate::emptyComplete(void *stream, bool reload)
 
     m_emptying = false;
 
-    if ((pa_stream *)stream == m_pulseStream)
-        pa_operation_unref(pa_stream_cork(m_pulseStream, 1, reload ? stream_cork_callback : 0, m_ref->getRef()));
+    if ((pa_stream *)stream == m_pulseStream) {
+        pa_operation *op = pa_stream_cork(m_pulseStream, 1, reload ? stream_cork_callback : 0, m_ref->getRef());
+        if (op)
+            pa_operation_unref(op);
+        else
+            qWarning("QSoundEffect(pulseaudio): failed to cork stream");
+    }
 }
 
 void QSoundEffectPrivate::sampleReady()
@@ -672,7 +685,11 @@ void QSoundEffectPrivate::sampleReady()
             pa_buffer_attr newBufferAttr;
             newBufferAttr = *bufferAttr;
             newBufferAttr.prebuf = m_sample->data().size();
-            pa_operation_unref(pa_stream_set_buffer_attr(m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, m_ref->getRef()));
+            pa_operation *op = pa_stream_set_buffer_attr(m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, m_ref->getRef());
+            if (op)
+                pa_operation_unref(op);
+            else
+                qWarning("QSoundEffect(pulseaudio): failed to adjust pre-buffer attribute");
         } else {
             streamReady();
         }
@@ -685,12 +702,20 @@ void QSoundEffectPrivate::sampleReady()
             newBufferAttr.minreq = bufferAttr->tlength / 2;
             newBufferAttr.prebuf = -1;
             newBufferAttr.fragsize = -1;
-            pa_operation_unref(pa_stream_set_buffer_attr(m_pulseStream, &newBufferAttr, stream_reset_buffer_callback, m_ref->getRef()));
+            pa_operation *op = pa_stream_set_buffer_attr(m_pulseStream, &newBufferAttr, stream_reset_buffer_callback, m_ref->getRef());
+            if (op)
+                pa_operation_unref(op);
+            else
+                qWarning("QSoundEffect(pulseaudio): failed to adjust pre-buffer attribute");
         } else if (bufferAttr->prebuf > uint32_t(m_sample->data().size())) {
             pa_buffer_attr newBufferAttr;
             newBufferAttr = *bufferAttr;
             newBufferAttr.prebuf = m_sample->data().size();
-            pa_operation_unref(pa_stream_set_buffer_attr(m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, m_ref->getRef()));
+            pa_operation *op = pa_stream_set_buffer_attr(m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, m_ref->getRef());
+            if (op)
+                pa_operation_unref(op);
+            else
+                qWarning("QSoundEffect(pulseaudio): failed to adjust pre-buffer attribute");
         } else {
             streamReady();
         }
@@ -995,7 +1020,11 @@ void QSoundEffectPrivate::stream_state_callback(pa_stream *s, void *userdata)
                 pa_buffer_attr newBufferAttr;
                 newBufferAttr = *bufferAttr;
                 newBufferAttr.prebuf = self->m_sample->data().size();
-                pa_stream_set_buffer_attr(self->m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, self->m_ref->getRef());
+                pa_operation *op = pa_stream_set_buffer_attr(self->m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, self->m_ref->getRef());
+                if (op)
+                    pa_operation_unref(op);
+                else
+                    qWarning("QSoundEffect(pulseaudio): failed to adjust pre-buffer attribute");
             } else {
                 QMetaObject::invokeMethod(self, "streamReady", Qt::QueuedConnection);
             }
@@ -1032,7 +1061,7 @@ void QSoundEffectPrivate::stream_reset_buffer_callback(pa_stream *s, int success
         return;
 
     if (!success)
-        qWarning("QSoundEffect(pulseaudio): faild to reset buffer attribute");
+        qWarning("QSoundEffect(pulseaudio): failed to reset buffer attribute");
 #ifdef QT_PA_DEBUG
     qDebug() << self << "stream_reset_buffer_callback";
 #endif
@@ -1042,7 +1071,11 @@ void QSoundEffectPrivate::stream_reset_buffer_callback(pa_stream *s, int success
         pa_buffer_attr newBufferAttr;
         newBufferAttr = *bufferAttr;
         newBufferAttr.prebuf = self->m_sample->data().size();
-        pa_stream_set_buffer_attr(self->m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, userdata);
+        pa_operation *op = pa_stream_set_buffer_attr(self->m_pulseStream, &newBufferAttr, stream_adjust_prebuffer_callback, userdata);
+        if (op)
+            pa_operation_unref(op);
+        else
+            qWarning("QSoundEffect(pulseaudio): failed to adjust pre-buffer attribute");
     } else {
         QMetaObject::invokeMethod(self, "streamReady", Qt::QueuedConnection);
     }
@@ -1061,7 +1094,7 @@ void QSoundEffectPrivate::stream_adjust_prebuffer_callback(pa_stream *s, int suc
         return;
 
     if (!success)
-        qWarning("QSoundEffect(pulseaudio): faild to adjust pre-buffer attribute");
+        qWarning("QSoundEffect(pulseaudio): failed to adjust pre-buffer attribute");
 #ifdef QT_PA_DEBUG
     qDebug() << self << "stream_adjust_prebuffer_callback";
 #endif
@@ -1096,7 +1129,7 @@ void QSoundEffectPrivate::stream_cork_callback(pa_stream *s, int success, void *
         return;
 
     if (!success)
-        qWarning("QSoundEffect(pulseaudio): faild to stop");
+        qWarning("QSoundEffect(pulseaudio): failed to stop");
 #ifdef QT_PA_DEBUG
     qDebug() << self << "stream_cork_callback";
 #endif
@@ -1116,7 +1149,7 @@ void QSoundEffectPrivate::stream_flush_callback(pa_stream *s, int success, void
         return;
 
     if (!success)
-        qWarning("QSoundEffect(pulseaudio): faild to drain");
+        qWarning("QSoundEffect(pulseaudio): failed to drain");
 
     QMetaObject::invokeMethod(self, "emptyComplete", Qt::QueuedConnection, Q_ARG(void*, s), Q_ARG(bool, false));
 }
@@ -1134,7 +1167,7 @@ void QSoundEffectPrivate::stream_flush_reload_callback(pa_stream *s, int success
         return;
 
     if (!success)
-        qWarning("QSoundEffect(pulseaudio): faild to drain");
+        qWarning("QSoundEffect(pulseaudio): failed to drain");
 
     QMetaObject::invokeMethod(self, "emptyComplete", Qt::QueuedConnection, Q_ARG(void*, s), Q_ARG(bool, true));
 }
diff --git a/src/multimedia/controls/qmediarecordercontrol.cpp b/src/multimedia/controls/qmediarecordercontrol.cpp
index 4654d16eb..abffc6811 100644
--- a/src/multimedia/controls/qmediarecordercontrol.cpp
+++ b/src/multimedia/controls/qmediarecordercontrol.cpp
@@ -166,7 +166,9 @@ QMediaRecorderControl::~QMediaRecorderControl()
 /*!
     \fn void QMediaRecorderControl::setVolume(qreal gain)
 
-    Sets the linear audio \a gain of a media recorder.
+    Sets the audio \a gain of a media recorder control.
+
+    The gain is scaled linearly, ranging from \c 0 (silence) to \c 100 (full volume).
 */
 
 /*!
diff --git a/src/multimedia/doc/src/multimedia.qdoc b/src/multimedia/doc/src/multimedia.qdoc
index 813847d88..84df488d2 100644
--- a/src/multimedia/doc/src/multimedia.qdoc
+++ b/src/multimedia/doc/src/multimedia.qdoc
@@ -177,7 +177,7 @@ what changed, and what you might need to change when porting code.
 \section2 QML Types
 The QML types are accessed by using:
 \code
-import QtMultimedia 5.6
+import QtMultimedia 5.7
 \endcode
 \annotatedlist multimedia_qml
 The following types are accessed by using \l{Qt Audio Engine QML Types}{Qt Audio Engine}:
diff --git a/src/multimedia/doc/src/qtmultimedia-index.qdoc b/src/multimedia/doc/src/qtmultimedia-index.qdoc
index 989b8886e..a474a355e 100644
--- a/src/multimedia/doc/src/qtmultimedia-index.qdoc
+++ b/src/multimedia/doc/src/qtmultimedia-index.qdoc
@@ -54,7 +54,7 @@
     import statement in your \c {.qml} file.
 
     \code
-     import QtMultimedia 5.6
+     import QtMultimedia 5.7
     \endcode
 
     If you intend to use the C++ classes in your application, include the C++
diff --git a/src/multimedia/doc/src/qtmultimedia5.qdoc b/src/multimedia/doc/src/qtmultimedia5.qdoc
index 21854ae7c..bc200819b 100644
--- a/src/multimedia/doc/src/qtmultimedia5.qdoc
+++ b/src/multimedia/doc/src/qtmultimedia5.qdoc
@@ -26,7 +26,7 @@
 ****************************************************************************/
 
 /*!
-\qmlmodule QtMultimedia 5.6
+\qmlmodule QtMultimedia 5.7
 \title Qt Multimedia QML Types
 \ingroup qmlmodules
 \brief Provides QML types for multimedia support.
@@ -42,7 +42,7 @@ The QML types for \l{Qt Multimedia} support the basic use cases such as:
 The QML types can be imported into your application using the following import
 statement in your .qml file:
 \code
-import QtMultimedia 5.6
+import QtMultimedia 5.7
 \endcode
 
 \section1 QML types
diff --git a/src/multimedia/playback/qmedianetworkplaylistprovider.cpp b/src/multimedia/playback/qmedianetworkplaylistprovider.cpp
index 67ce123d8..7de90d9a1 100644
--- a/src/multimedia/playback/qmedianetworkplaylistprovider.cpp
+++ b/src/multimedia/playback/qmedianetworkplaylistprovider.cpp
@@ -74,7 +74,7 @@ void QMediaNetworkPlaylistProviderPrivate::_q_handleParserError(QPlaylistFilePar
 
     QMediaPlaylist::Error playlistError = QMediaPlaylist::NoError;
 
-    switch ((QPlaylistFileParser::ParserError)err) {
+    switch (err) {
     case QPlaylistFileParser::NoError:
         return;
     case QPlaylistFileParser::FormatError:
diff --git a/src/multimedia/playback/qmediaplayer.cpp b/src/multimedia/playback/qmediaplayer.cpp
index edccd30ef..08f194be7 100644
--- a/src/multimedia/playback/qmediaplayer.cpp
+++ b/src/multimedia/playback/qmediaplayer.cpp
@@ -962,8 +962,8 @@ void QMediaPlayer::setPlaybackRate(qreal rate)
     Sets the current \a media source.
 
     If a \a stream is supplied; media data will be read from it instead of resolving the media
-    source.  In this case the media source may still be used to resolve additional information
-    about the media such as mime type.
+    source. In this case the media source may still be used to resolve additional information
+    about the media such as mime type. The \a stream must be open and readable.
 
     Setting the media to a null QMediaContent will cause the player to discard all
     information relating to the current media source and to cease all I/O operations related
diff --git a/src/multimedia/recording/qmediarecorder.cpp b/src/multimedia/recording/qmediarecorder.cpp
index a5f4c15ce..65eaed159 100644
--- a/src/multimedia/recording/qmediarecorder.cpp
+++ b/src/multimedia/recording/qmediarecorder.cpp
@@ -569,8 +569,10 @@ void QMediaRecorder::setVolume(qreal volume)
 {
     Q_D(QMediaRecorder);
 
-    if (d->control)
+    if (d->control) {
+        volume = qMax(qreal(0.0), volume);
         d->control->setVolume(volume);
+    }
 }
 
 /*!
diff --git a/src/plugins/avfoundation/mediaplayer/avfmediaplayermetadatacontrol.h b/src/plugins/avfoundation/mediaplayer/avfmediaplayermetadatacontrol.h
index 6721b0c85..396550047 100644
--- a/src/plugins/avfoundation/mediaplayer/avfmediaplayermetadatacontrol.h
+++ b/src/plugins/avfoundation/mediaplayer/avfmediaplayermetadatacontrol.h
@@ -64,7 +64,7 @@ private Q_SLOTS:
 
 private:
     AVFMediaPlayerSession *m_session;
-    QMap<QString, QVariant> m_tags;
+    QVariantMap m_tags;
     void *m_asset;
 
 };
diff --git a/src/plugins/avfoundation/mediaplayer/avfmediaplayermetadatacontrol.mm b/src/plugins/avfoundation/mediaplayer/avfmediaplayermetadatacontrol.mm
index 2414ff361..39783680b 100644
--- a/src/plugins/avfoundation/mediaplayer/avfmediaplayermetadatacontrol.mm
+++ b/src/plugins/avfoundation/mediaplayer/avfmediaplayermetadatacontrol.mm
@@ -81,6 +81,41 @@ QStringList AVFMediaPlayerMetaDataControl::availableMetaData() const
     return m_tags.keys();
 }
 
+static QString itemKey(AVMetadataItem *item)
+{
+    NSString *keyString = [item commonKey];
+
+    if (keyString.length != 0) {
+        if ([keyString isEqualToString:AVMetadataCommonKeyTitle]) {
+            return QMediaMetaData::Title;
+        } else if ([keyString isEqualToString: AVMetadataCommonKeySubject]) {
+            return QMediaMetaData::SubTitle;
+        } else if ([keyString isEqualToString: AVMetadataCommonKeyDescription]) {
+            return QMediaMetaData::Description;
+        } else if ([keyString isEqualToString: AVMetadataCommonKeyPublisher]) {
+            return QMediaMetaData::Publisher;
+        } else if ([keyString isEqualToString: AVMetadataCommonKeyCreationDate]) {
+            return QMediaMetaData::Date;
+        } else if ([keyString isEqualToString: AVMetadataCommonKeyType]) {
+            return QMediaMetaData::MediaType;
+        } else if ([keyString isEqualToString: AVMetadataCommonKeyLanguage]) {
+            return QMediaMetaData::Language;
+        } else if ([keyString isEqualToString: AVMetadataCommonKeyCopyrights]) {
+            return QMediaMetaData::Copyright;
+        } else if ([keyString isEqualToString: AVMetadataCommonKeyAlbumName]) {
+            return QMediaMetaData::AlbumTitle;
+        } else if ([keyString isEqualToString: AVMetadataCommonKeyAuthor]) {
+            return QMediaMetaData::Author;
+        } else if ([keyString isEqualToString: AVMetadataCommonKeyArtist]) {
+            return QMediaMetaData::ContributingArtist;
+        } else if ([keyString isEqualToString: AVMetadataCommonKeyArtwork]) {
+            return QMediaMetaData::PosterUrl;
+        }
+    }
+
+    return QString();
+}
+
 void AVFMediaPlayerMetaDataControl::updateTags()
 {
 #ifdef QT_DEBUG_AVF
@@ -89,67 +124,38 @@ void AVFMediaPlayerMetaDataControl::updateTags()
     AVAsset *currentAsset = (AVAsset*)m_session->currentAssetHandle();
 
     //Don't read the tags from the same asset more than once
-    if (currentAsset == m_asset) {
+    if (currentAsset == m_asset)
         return;
-    }
 
     m_asset = currentAsset;
 
+    QVariantMap oldTags = m_tags;
     //Since we've changed assets, clear old tags
     m_tags.clear();
-
-    NSArray *metadataFormats = [currentAsset availableMetadataFormats];
-    for ( NSString *format in metadataFormats) {
-#ifdef QT_DEBUG_AVF
-        qDebug() << "format: " << [format UTF8String];
-#endif
-        NSArray *metadataItems = [currentAsset metadataForFormat:format];
-        for (AVMetadataItem* item in metadataItems) {
-            NSString *keyString = [item commonKey];
-            NSString *value = [item stringValue];
-
-            if (keyString.length != 0) {
-                //Process "commonMetadata" tags here:
-                if ([keyString isEqualToString:AVMetadataCommonKeyTitle]) {
-                    m_tags.insert(QMediaMetaData::Title, QString([value UTF8String]));
-                } else if ([keyString isEqualToString: AVMetadataCommonKeyCreator]) {
-                    m_tags.insert(QMediaMetaData::Author, QString([value UTF8String]));
-                } else if ([keyString isEqualToString: AVMetadataCommonKeySubject]) {
-                    m_tags.insert(QMediaMetaData::SubTitle, QString([value UTF8String]));
-                } else if ([keyString isEqualToString: AVMetadataCommonKeyDescription]) {
-                    m_tags.insert(QMediaMetaData::Description, QString([value UTF8String]));
-                } else if ([keyString isEqualToString: AVMetadataCommonKeyPublisher]) {
-                    m_tags.insert(QMediaMetaData::Publisher, QString([value UTF8String]));
-                } else if ([keyString isEqualToString: AVMetadataCommonKeyContributor]) {
-                    m_tags.insert(QMediaMetaData::ContributingArtist, QString([value UTF8String]));
-                } else if ([keyString isEqualToString: AVMetadataCommonKeyCreationDate]) {
-                    m_tags.insert(QMediaMetaData::Date, QString([value UTF8String]));
-                } else if ([keyString isEqualToString: AVMetadataCommonKeyType]) {
-                    m_tags.insert(QMediaMetaData::MediaType, QString([value UTF8String]));
-                } else if ([keyString isEqualToString: AVMetadataCommonKeyLanguage]) {
-                    m_tags.insert(QMediaMetaData::Language, QString([value UTF8String]));
-                } else if ([keyString isEqualToString: AVMetadataCommonKeyCopyrights]) {
-                    m_tags.insert(QMediaMetaData::Copyright, QString([value UTF8String]));
-                } else if ([keyString isEqualToString: AVMetadataCommonKeyAlbumName]) {
-                    m_tags.insert(QMediaMetaData::AlbumTitle, QString([value UTF8String]));
-                } else if ([keyString isEqualToString: AVMetadataCommonKeyAuthor]) {
-                    m_tags.insert(QMediaMetaData::Author, QString([value UTF8String]));
-                } else if ([keyString isEqualToString: AVMetadataCommonKeyArtist]) {
-                    m_tags.insert(QMediaMetaData::AlbumArtist, QString([value UTF8String]));
-                } else if ([keyString isEqualToString: AVMetadataCommonKeyArtwork]) {
-                    m_tags.insert(QMediaMetaData::PosterUrl, QString([value UTF8String]));
+    bool changed = false;
+
+    // TODO: also process ID3, iTunes and QuickTime metadata
+
+    NSArray *metadataItems = [currentAsset commonMetadata];
+    for (AVMetadataItem* item in metadataItems) {
+        const QString key = itemKey(item);
+        if (!key.isEmpty()) {
+            const QString value = QString::fromNSString([item stringValue]);
+            if (!value.isNull()) {
+                m_tags.insert(key, value);
+                if (value != oldTags.value(key)) {
+                    changed = true;
+                    Q_EMIT metaDataChanged(key, value);
                 }
             }
-
-            if ([format isEqualToString:AVMetadataFormatID3Metadata]) {
-                //TODO: Process ID3 metadata
-            } else if ([format isEqualToString:AVMetadataFormatiTunesMetadata]) {
-                //TODO: Process iTunes metadata
-            } else if ([format isEqualToString:AVMetadataFormatQuickTimeUserData]) {
-                //TODO: Process QuickTime metadata
-            }
         }
     }
 
-    Q_EMIT metaDataChanged();
+    if (oldTags.isEmpty() != m_tags.isEmpty()) {
+        Q_EMIT metaDataAvailableChanged(!m_tags.isEmpty());
+        changed = true;
+    }
+
+    if (changed)
+        Q_EMIT metaDataChanged();
 }
diff --git a/src/plugins/gstreamer/camerabin/camerabinserviceplugin.cpp b/src/plugins/gstreamer/camerabin/camerabinserviceplugin.cpp
index b810e2b02..2d3c7c2ea 100644
--- a/src/plugins/gstreamer/camerabin/camerabinserviceplugin.cpp
+++ b/src/plugins/gstreamer/camerabin/camerabinserviceplugin.cpp
@@ -66,8 +66,19 @@ QMediaService* CameraBinServicePlugin::create(const QString &key)
 {
     QGstUtils::initializeGst();
 
-    if (key == QLatin1String(Q_MEDIASERVICE_CAMERA))
+    if (key == QLatin1String(Q_MEDIASERVICE_CAMERA)) {
+        if (!CameraBinService::isCameraBinAvailable()) {
+            guint major, minor, micro, nano;
+            gst_version(&major, &minor, &micro, &nano);
+            qWarning("Error: cannot create camera service, the 'camerabin' plugin is missing for "
+                     "GStreamer %u.%u."
+                     "\nPlease install the 'bad' GStreamer plugin package.",
+                     major, minor);
+            return Q_NULLPTR;
+        }
+
         return new CameraBinService(sourceFactory());
+    }
 
     qWarning() << "Gstreamer camerabin service plugin: unsupported key:" << key;
     return 0;
diff --git a/src/plugins/pulseaudio/qpulseaudioengine.cpp b/src/plugins/pulseaudio/qpulseaudioengine.cpp
index 286f310bc..41aba378a 100644
--- a/src/plugins/pulseaudio/qpulseaudioengine.cpp
+++ b/src/plugins/pulseaudio/qpulseaudioengine.cpp
@@ -176,15 +176,30 @@ static void event_cb(pa_context* context, pa_subscription_event_type_t t, uint32
     case PA_SUBSCRIPTION_EVENT_NEW:
     case PA_SUBSCRIPTION_EVENT_CHANGE:
         switch (facility) {
-        case PA_SUBSCRIPTION_EVENT_SERVER:
-            pa_operation_unref(pa_context_get_server_info(context, serverInfoCallback, userdata));
+        case PA_SUBSCRIPTION_EVENT_SERVER: {
+            pa_operation *op = pa_context_get_server_info(context, serverInfoCallback, userdata);
+            if (op)
+                pa_operation_unref(op);
+            else
+                qWarning("PulseAudioService: failed to get server info");
             break;
-        case PA_SUBSCRIPTION_EVENT_SINK:
-            pa_operation_unref(pa_context_get_sink_info_by_index(context, index, sinkInfoCallback, userdata));
+        }
+        case PA_SUBSCRIPTION_EVENT_SINK: {
+            pa_operation *op = pa_context_get_sink_info_by_index(context, index, sinkInfoCallback, userdata);
+            if (op)
+                pa_operation_unref(op);
+            else
+                qWarning("PulseAudioService: failed to get sink info");
             break;
-        case PA_SUBSCRIPTION_EVENT_SOURCE:
-            pa_operation_unref(pa_context_get_source_info_by_index(context, index, sourceInfoCallback, userdata));
+        }
+        case PA_SUBSCRIPTION_EVENT_SOURCE: {
+            pa_operation *op = pa_context_get_source_info_by_index(context, index, sourceInfoCallback, userdata);
+            if (op)
+                pa_operation_unref(op);
+            else
+                qWarning("PulseAudioService: failed to get source info");
             break;
+        }
         default:
             break;
         }
@@ -334,11 +349,15 @@ void QPulseAudioEngine::prepare()
         pa_context_set_state_callback(m_context, contextStateCallback, this);
 
         pa_context_set_subscribe_callback(m_context, event_cb, this);
-        pa_operation_unref(pa_context_subscribe(m_context,
+        pa_operation *op = pa_context_subscribe(m_context,
                                                 pa_subscription_mask_t(PA_SUBSCRIPTION_MASK_SINK |
                                                                        PA_SUBSCRIPTION_MASK_SOURCE |
                                                                        PA_SUBSCRIPTION_MASK_SERVER),
-                                                NULL, NULL));
+                                                NULL, NULL);
+        if (op)
+            pa_operation_unref(op);
+        else
+            qWarning("PulseAudioService: failed to subscribe to context notifications");
     } else {
         pa_context_unref(m_context);
         m_context = 0;
@@ -382,21 +401,33 @@ void QPulseAudioEngine::updateDevices()
 
     // Get default input and output devices
     pa_operation *operation = pa_context_get_server_info(m_context, serverInfoCallback, this);
-    while (pa_operation_get_state(operation) == PA_OPERATION_RUNNING)
-        pa_threaded_mainloop_wait(m_mainLoop);
-    pa_operation_unref(operation);
+    if (operation) {
+        while (pa_operation_get_state(operation) == PA_OPERATION_RUNNING)
+            pa_threaded_mainloop_wait(m_mainLoop);
+        pa_operation_unref(operation);
+    } else {
+        qWarning("PulseAudioService: failed to get server info");
+    }
 
     // Get output devices
     operation = pa_context_get_sink_info_list(m_context, sinkInfoCallback, this);
-    while (pa_operation_get_state(operation) == PA_OPERATION_RUNNING)
-        pa_threaded_mainloop_wait(m_mainLoop);
-    pa_operation_unref(operation);
+    if (operation) {
+        while (pa_operation_get_state(operation) == PA_OPERATION_RUNNING)
+            pa_threaded_mainloop_wait(m_mainLoop);
+        pa_operation_unref(operation);
+    } else {
+        qWarning("PulseAudioService: failed to get sink info");
+    }
 
     // Get input devices
     operation = pa_context_get_source_info_list(m_context, sourceInfoCallback, this);
-    while (pa_operation_get_state(operation) == PA_OPERATION_RUNNING)
-        pa_threaded_mainloop_wait(m_mainLoop);
-    pa_operation_unref(operation);
+    if (operation) {
+        while (pa_operation_get_state(operation) == PA_OPERATION_RUNNING)
+            pa_threaded_mainloop_wait(m_mainLoop);
+        pa_operation_unref(operation);
+    } else {
+        qWarning("PulseAudioService: failed to get source info");
+    }
 
     unlock();
 }
diff --git a/tests/auto/integration/qaudiooutput/BLACKLIST b/tests/auto/integration/qaudiooutput/BLACKLIST
deleted file mode 100644
index e6cd7c846..000000000
--- a/tests/auto/integration/qaudiooutput/BLACKLIST
+++ /dev/null
@@ -1,8 +0,0 @@
-#QTBUG-52673
-[pullSuspendResume]
-redhatenterpriselinuxworkstation-6.6
-rhel-7.1
-ubuntu-14.04
-opensuse-13.1 64bit
-opensuse-42.1
-rhel-7.2
diff --git a/tests/auto/integration/qaudiooutput/tst_qaudiooutput.cpp b/tests/auto/integration/qaudiooutput/tst_qaudiooutput.cpp
index fbbd9c731..f167bf8ec 100644
--- a/tests/auto/integration/qaudiooutput/tst_qaudiooutput.cpp
+++ b/tests/auto/integration/qaudiooutput/tst_qaudiooutput.cpp
@@ -525,8 +525,8 @@ void tst_QAudioOutput::pull()
 
     // Wait until playback finishes
     QTRY_VERIFY2(audioFile->atEnd(), "didn't play to EOF");
-    QTRY_VERIFY2((stateSignal.count() == 1),
-             QString("didn't emit IdleState signal when at EOF, got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+    QTRY_VERIFY(stateSignal.count() > 0);
+    QCOMPARE(qvariant_cast<QAudio::State>(stateSignal.last().at(0)), QAudio::IdleState);
     QVERIFY2((audioOutput.state() == QAudio::IdleState), "didn't transitions to IdleState when at EOF");
     stateSignal.clear();
 
@@ -605,9 +605,6 @@ void tst_QAudioOutput::pullSuspendResume()
 
     audioOutput.resume();
 
-    // Give backends running in separate threads a chance to suspend.
-    QTest::qWait(100);
-
     // Check that QAudioOutput immediately transitions to ActiveState
     QVERIFY2((stateSignal.count() == 1),
              QString("didn't emit signal after resume(), got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
@@ -619,8 +616,8 @@ void tst_QAudioOutput::pullSuspendResume()
     QTest::qWait(3000); // 3 seconds should be plenty
 
     QVERIFY2(audioFile->atEnd(), "didn't play to EOF");
-    QVERIFY2((stateSignal.count() == 1),
-             QString("didn't emit IdleState signal when at EOF, got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+    QVERIFY(stateSignal.count() > 0);
+    QCOMPARE(qvariant_cast<QAudio::State>(stateSignal.last().at(0)), QAudio::IdleState);
     QVERIFY2((audioOutput.state() == QAudio::IdleState), "didn't transitions to IdleState when at EOF");
     stateSignal.clear();
 
@@ -705,8 +702,8 @@ void tst_QAudioOutput::push()
     QTest::qWait(3000); // 3 seconds should be plenty
 
     QVERIFY2(audioFile->atEnd(), "didn't play to EOF");
-    QVERIFY2((stateSignal.count() == 1),
-             QString("didn't emit IdleState signal when at EOF, got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+    QVERIFY(stateSignal.count() > 0);
+    QCOMPARE(qvariant_cast<QAudio::State>(stateSignal.last().at(0)), QAudio::IdleState);
     QVERIFY2((audioOutput.state() == QAudio::IdleState), "didn't transitions to IdleState when at EOF");
     stateSignal.clear();
 
@@ -840,8 +837,8 @@ void tst_QAudioOutput::pushSuspendResume()
     QTest::qWait(1000); // 1 seconds should be plenty
 
     QVERIFY2(audioFile->atEnd(), "didn't play to EOF");
-    QVERIFY2((stateSignal.count() == 1),
-             QString("didn't emit IdleState signal when at EOF, got %1 signals instead").arg(stateSignal.count()).toLocal8Bit().constData());
+    QVERIFY(stateSignal.count() > 0);
+    QCOMPARE(qvariant_cast<QAudio::State>(stateSignal.last().at(0)), QAudio::IdleState);
     QVERIFY2((audioOutput.state() == QAudio::IdleState), "didn't transitions to IdleState when at EOF");
     stateSignal.clear();
 
diff --git a/tests/auto/integration/qsoundeffect/BLACKLIST b/tests/auto/integration/qsoundeffect/BLACKLIST
new file mode 100644
index 000000000..abf85ae93
--- /dev/null
+++ b/tests/auto/integration/qsoundeffect/BLACKLIST
@@ -0,0 +1,3 @@
+#QTBUG-55735
+[testSetSourceWhilePlaying]
+linux