From 5f0f81bcc1b82ea3418e4e5ce939ce22b11af0af Mon Sep 17 00:00:00 2001
From: Yoann Lopes <yoann.lopes@digia.com>
Date: Thu, 5 Jun 2014 15:25:55 +0200
Subject: [PATCH] AVFoundation: fix some controls not being correctly destroyed
 on iOS.

This patch also makes sure AVF video layers are removed from their
parent layer when their corresponding Qt video outputs are destroyed.

Task-number: QTBUG-39385
Change-Id: I164cd0da7084f84c0473ed3e396e734acce2a22e
Reviewed-by: Andy Nichols <andy.nichols@digia.com>
---
 src/plugins/avfoundation/camera/avfcameraservice.mm          | 4 ++--
 .../avfoundation/mediaplayer/avfmediaplayerservice.mm        | 5 +++--
 src/plugins/avfoundation/mediaplayer/avfvideowidget.mm       | 4 +++-
 .../avfoundation/mediaplayer/avfvideowindowcontrol.mm        | 4 +++-
 4 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/src/plugins/avfoundation/camera/avfcameraservice.mm b/src/plugins/avfoundation/camera/avfcameraservice.mm
index 25111c5c..966202ed 100644
--- a/src/plugins/avfoundation/camera/avfcameraservice.mm
+++ b/src/plugins/avfoundation/camera/avfcameraservice.mm
@@ -135,9 +135,9 @@ QMediaControl *AVFCameraService::requestControl(const char *name)
 void AVFCameraService::releaseControl(QMediaControl *control)
 {
     if (m_videoOutput == control) {
-        m_videoOutput = 0;
         m_session->setVideoOutput(0);
-        delete control;
+        delete m_videoOutput;
+        m_videoOutput = 0;
     }
 }
 
diff --git a/src/plugins/avfoundation/mediaplayer/avfmediaplayerservice.mm b/src/plugins/avfoundation/mediaplayer/avfmediaplayerservice.mm
index e5549803..bb75adb8 100644
--- a/src/plugins/avfoundation/mediaplayer/avfmediaplayerservice.mm
+++ b/src/plugins/avfoundation/mediaplayer/avfmediaplayerservice.mm
@@ -118,14 +118,15 @@ void AVFMediaPlayerService::releaseControl(QMediaControl *control)
 #ifdef QT_DEBUG_AVF
     qDebug() << Q_FUNC_INFO << control;
 #endif
-#if defined(Q_OS_OSX)
     if (m_videoOutput == control) {
+#if defined(Q_OS_OSX)
         AVFVideoRendererControl *renderControl = qobject_cast<AVFVideoRendererControl*>(m_videoOutput);
         if (renderControl)
             renderControl->setSurface(0);
+#endif
         m_videoOutput = 0;
         m_session->setVideoOutput(0);
+
         delete control;
     }
-#endif
 }
diff --git a/src/plugins/avfoundation/mediaplayer/avfvideowidget.mm b/src/plugins/avfoundation/mediaplayer/avfvideowidget.mm
index d4fa7c4c..2893921f 100644
--- a/src/plugins/avfoundation/mediaplayer/avfvideowidget.mm
+++ b/src/plugins/avfoundation/mediaplayer/avfvideowidget.mm
@@ -64,8 +64,10 @@ AVFVideoWidget::~AVFVideoWidget()
     qDebug() << Q_FUNC_INFO;
 #endif
 
-    if (m_playerLayer)
+    if (m_playerLayer) {
+        [m_playerLayer removeFromSuperlayer];
         [m_playerLayer release];
+    }
 }
 
 QSize AVFVideoWidget::sizeHint() const
diff --git a/src/plugins/avfoundation/mediaplayer/avfvideowindowcontrol.mm b/src/plugins/avfoundation/mediaplayer/avfvideowindowcontrol.mm
index 17fc94de..8e96d732 100644
--- a/src/plugins/avfoundation/mediaplayer/avfvideowindowcontrol.mm
+++ b/src/plugins/avfoundation/mediaplayer/avfvideowindowcontrol.mm
@@ -61,8 +61,10 @@ AVFVideoWindowControl::AVFVideoWindowControl(QObject *parent)
 
 AVFVideoWindowControl::~AVFVideoWindowControl()
 {
-    if (m_playerLayer)
+    if (m_playerLayer) {
+        [m_playerLayer removeFromSuperlayer];
         [m_playerLayer release];
+    }
 }
 
 WId AVFVideoWindowControl::winId() const