main.cpp Example File

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  #include <QtCore/QStandardPaths>
  #include <QtCore/QString>
  #include <QtCore/QStringList>
  #include <QtQml/QQmlContext>
  #include <QtQml/QQmlEngine>
  #include <QtGui/QGuiApplication>
  #include <QtQuick/QQuickItem>
  #include <QtQuick/QQuickView>
  #include "trace.h"

  #ifdef PERFORMANCEMONITOR_SUPPORT
  #include "performancemonitordeclarative.h"
  #endif

  static const QString DefaultFileName1 = "";
  static const QString DefaultFileName2 = "";

  int main(int argc, char *argv[])
  {
      QGuiApplication app(argc, argv);

  #ifdef PERFORMANCEMONITOR_SUPPORT
      PerformanceMonitor::qmlRegisterTypes();
  #endif

      QString source1, source2;
      qreal volume = 0.5;
      QStringList args = app.arguments();
  #ifdef PERFORMANCEMONITOR_SUPPORT
      PerformanceMonitor::State performanceMonitorState;
  #endif
      bool sourceIsUrl = false;
      for (int i = 1; i < args.size(); ++i) {
          const QByteArray arg = args.at(i).toUtf8();
          if (arg.startsWith('-')) {
              if ("-volume" == arg) {
                  if (i+1 < args.count())
                      volume = 0.01 * args.at(++i).toInt();
                  else
                      qtTrace() << "Option \"-volume\" takes a value";
              }
  #ifdef PERFORMANCEMONITOR_SUPPORT
              else if (performanceMonitorState.parseArgument(arg)) {
                  // Do nothing
              }
  #endif
              else if ("-url" == arg) {
                  sourceIsUrl = true;
              } else {
                  qtTrace() << "Option" << arg << "ignored";
              }
          } else {
              if (source1.isEmpty())
                  source1 = arg;
              else if (source2.isEmpty())
                  source2 = arg;
              else
                  qtTrace() << "Argument" << arg << "ignored";
          }
      }

      QUrl url1, url2;
      if (sourceIsUrl) {
          url1 = source1;
          url2 = source2;
      } else {
          if (!source1.isEmpty())
              url1 = QUrl::fromLocalFile(source1);
          if (!source2.isEmpty())
              url2 = QUrl::fromLocalFile(source2);
      }

      QQuickView viewer;
      viewer.setSource(QUrl("qrc:///qml/qmlvideo/main.qml"));
      QObject::connect(viewer.engine(), SIGNAL(quit()), &viewer, SLOT(close()));

      QQuickItem *rootObject = viewer.rootObject();
      rootObject->setProperty("source1", url1);
      rootObject->setProperty("source2", url2);
      rootObject->setProperty("volume", volume);

  #ifdef PERFORMANCEMONITOR_SUPPORT
      if (performanceMonitorState.valid) {
          rootObject->setProperty("perfMonitorsLogging", performanceMonitorState.logging);
          rootObject->setProperty("perfMonitorsVisible", performanceMonitorState.visible);
      }
      QObject::connect(&viewer, SIGNAL(afterRendering()),
                       rootObject, SLOT(qmlFramePainted()));
  #endif

      const QStringList moviesLocation = QStandardPaths::standardLocations(QStandardPaths::MoviesLocation);
      const QUrl videoPath =
              QUrl::fromLocalFile(moviesLocation.isEmpty() ?
                                      app.applicationDirPath() :
                                      moviesLocation.front());
      viewer.rootContext()->setContextProperty("videoPath", videoPath);

      QMetaObject::invokeMethod(rootObject, "init");

      viewer.setMinimumSize(QSize(640, 360));
      viewer.show();

      return app.exec();
  }