Allow passing a media file as command line argument to the mediaplayer

It's often convenient to be able to pass the file to play back on
the command line to the QML based mediaplayer.

Pick-to: 6.2
Change-Id: I1b77184a614cb6a32a7243e242b99fcdc1bae300
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>

2 files changed, 22 insertions, 6 deletions

diff --git a/examples/multimedia/video/mediaplayer/main.cpp b/examples/multimedia/video/mediaplayer/main.cpp
index e1c2f513e..957083235 100644
--- a/examples/multimedia/video/mediaplayer/main.cpp
+++ b/examples/multimedia/video/mediaplayer/main.cpp
@@ -50,19 +50,34 @@
 
 #include <QGuiApplication>
 #include <QQmlApplicationEngine>
-
+#include <QCommandLineParser>
+#include <QDir>
 
 int main(int argc, char *argv[])
 {
     QGuiApplication app(argc, argv);
 
+    QCoreApplication::setApplicationName("MediaPlayer Example");
+    QCoreApplication::setOrganizationName("QtProject");
+    QCoreApplication::setApplicationVersion(QT_VERSION_STR);
+    QCommandLineParser parser;
+    parser.setApplicationDescription("Qt Quick MediaPlayer Example");
+    parser.addHelpOption();
+    parser.addVersionOption();
+    parser.addPositionalArgument("url", "The URL(s) to open.");
+    parser.process(app);
+
     QQmlApplicationEngine engine;
     const QUrl url(QStringLiteral("qrc:/main.qml"));
-    QObject::connect(&engine, &QQmlApplicationEngine::objectCreated,
-                     &app, [url](QObject *obj, const QUrl &objUrl) {
-        if (!obj && url == objUrl)
-            QCoreApplication::exit(-1);
-    }, Qt::QueuedConnection);
+
+    if (!parser.positionalArguments().isEmpty()) {
+        QUrl source = QUrl::fromUserInput(parser.positionalArguments().at(0), QDir::currentPath());
+        QObject::connect(&engine, &QQmlApplicationEngine::objectCreated, [source](QObject *object, const QUrl &){
+            qDebug() << "setting source";
+            object->setProperty("source", source);
+        });
+    }
+
     engine.load(url);
 
     return app.exec();
diff --git a/examples/multimedia/video/mediaplayer/main.qml b/examples/multimedia/video/mediaplayer/main.qml
index c7e03b24a..6ea8b4135 100644
--- a/examples/multimedia/video/mediaplayer/main.qml
+++ b/examples/multimedia/video/mediaplayer/main.qml
@@ -61,6 +61,7 @@ Window {
     height: 480
     visible: true
     title: qsTr("Multimedia Player")
+    property alias source: mediaPlayer.source
 
     Popup {
         id: mediaError