Add qmlvideo and qmlvideofx examples

Based on code imported from master branch of QtMobility repo,
ported to Qt Quick 2.

Task-number: QTBUG-23118
Change-Id: Ifd297de0e595c675ff1a8e3218d91b03629295b9
Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>
Reviewed-by: Michael Goddard <michael.goddard@nokia.com>

examples/video/qmlvideo/qml/qmlvideo/VideoDummy.qml

@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+
+// Item which is loaded by VideoItem if QtMultimediaKit is not available
+Rectangle {
+    id: root
+    color: "grey"
+    height: width
+    property int duration: 0
+    property int position: 0
+    property string source
+    property real volume: 1.0
+    property real playbackRate: 1.0
+
+    signal fatalError
+    signal sizeChanged
+    signal framePainted
+
+    Text {
+        anchors.fill: parent
+        anchors.margins: 10
+        color: "white"
+        horizontalAlignment: Text.AlignHCenter
+        text: "Failed to create Video item\n\nCheck that QtMultimediaKit is installed"
+        verticalAlignment: Text.AlignVCenter
+        wrapMode: Text.Wrap
+    }
+
+    onWidthChanged: height = width
+    onHeightChanged: root.sizeChanged()
+
+    function start() { }
+    function stop() { }
+}