Merge remote-tracking branch 'origin/5.8' into dev

Conflicts:
	src/imports/multimedia/multimedia.cpp

Change-Id: I38899391ec8d2fcec6f2d46514286759f7a27629

2 files changed, 19 insertions, 3 deletions

diff --git a/src/plugins/avfoundation/mediaplayer/avfmediaplayersession.mm b/src/plugins/avfoundation/mediaplayer/avfmediaplayersession.mm
index 87bb08e5c..473a18884 100644
--- a/src/plugins/avfoundation/mediaplayer/avfmediaplayersession.mm
+++ b/src/plugins/avfoundation/mediaplayer/avfmediaplayersession.mm
@@ -41,6 +41,8 @@
 #include "avfmediaplayerservice.h"
 #include "avfvideooutput.h"
 
+#include <qpointer.h>
+
 #import <AVFoundation/AVFoundation.h>
 
 QT_USE_NAMESPACE
@@ -111,15 +113,23 @@ static void *AVFMediaPlayerSessionObserverCurrentItemObservationContext = &AVFMe
         //Create an asset for inspection of a resource referenced by a given URL.
         //Load the values for the asset keys "tracks", "playable".
 
-        AVURLAsset *asset = [AVURLAsset URLAssetWithURL:m_URL options:nil];
-        NSArray *requestedKeys = [NSArray arrayWithObjects:AVF_TRACKS_KEY, AVF_PLAYABLE_KEY, nil];
+        // use __block to avoid maintaining strong references on variables captured by the
+        // following block callback
+        __block AVURLAsset *asset = [[AVURLAsset URLAssetWithURL:m_URL options:nil] retain];
+        __block NSArray *requestedKeys = [[NSArray arrayWithObjects:AVF_TRACKS_KEY, AVF_PLAYABLE_KEY, nil] retain];
+
+        __block AVFMediaPlayerSessionObserver *blockSelf = self;
+        QPointer<AVFMediaPlayerSession> session(m_session);
 
         // Tells the asset to load the values of any of the specified keys that are not already loaded.
         [asset loadValuesAsynchronouslyForKeys:requestedKeys completionHandler:
          ^{
              dispatch_async( dispatch_get_main_queue(),
                            ^{
-                                [self prepareToPlayAsset:asset withKeys:requestedKeys];
+                                if (session)
+                                    [blockSelf prepareToPlayAsset:asset withKeys:requestedKeys];
+                                 [asset release];
+                                 [requestedKeys release];
                             });
          }];
     }
diff --git a/src/plugins/avfoundation/mediaplayer/avfvideowidget.mm b/src/plugins/avfoundation/mediaplayer/avfvideowidget.mm
index 3b270f9b6..7eb5a71cf 100644
--- a/src/plugins/avfoundation/mediaplayer/avfvideowidget.mm
+++ b/src/plugins/avfoundation/mediaplayer/avfvideowidget.mm
@@ -45,6 +45,12 @@
 #include <QtGui/QPaintEvent>
 #include <QtGui/QPainter>
 
+#if defined(Q_OS_MACOS)
+#import <AppKit/AppKit.h>
+#else
+#import <UIKit/UIKit.h>
+#endif
+
 QT_USE_NAMESPACE
 
 AVFVideoWidget::AVFVideoWidget(QWidget *parent)