#include <QApplication> #include <QQmlApplicationEngine> #include <QQuickWindow> #include <QQuickItem> #include <QRunnable> #include <QDirIterator> #include <gst/gst.h> class SetPlaying : public QRunnable { public: SetPlaying(GstElement *); ~SetPlaying(); void run (); private: GstElement * pipeline_; }; SetPlaying::SetPlaying (GstElement * pipeline) { this->pipeline_ = pipeline ? static_cast<GstElement *> (gst_object_ref (pipeline)) : NULL; } SetPlaying::~SetPlaying () { if (this->pipeline_) gst_object_unref (this->pipeline_); } void SetPlaying::run () { if (this->pipeline_) gst_element_set_state (this->pipeline_, GST_STATE_PLAYING); } static void on_overlay_scene_initialized (GstElement * overlay, gpointer unused) { QQuickItem *rootObject; GST_INFO ("scene initialized"); g_object_get (overlay, "root-item", &rootObject, NULL); QQuickItem *videoItem = rootObject->findChild<QQuickItem *> ("inputVideoItem"); g_object_set (overlay, "widget", videoItem, NULL); } int main(int argc, char *argv[]) { int ret; gst_init (&argc, &argv); { QGuiApplication app(argc, argv); GstElement *pipeline = gst_pipeline_new (NULL); GstElement *src = gst_element_factory_make ("videotestsrc", NULL); GstElement *glupload = gst_element_factory_make ("glupload", NULL); /* the plugin must be loaded before loading the qml file to register the * GstGLVideoItem qml item */ GstElement *overlay = gst_element_factory_make ("qmlgloverlay", NULL); GstElement *overlay2 = gst_element_factory_make ("qmlgloverlay", NULL); GstElement *sink = gst_element_factory_make ("qmlglsink", NULL); g_assert (src && glupload && overlay && sink); gst_bin_add_many (GST_BIN (pipeline), src, glupload, overlay, overlay2, sink, NULL); gst_element_link_many (src, glupload, overlay, overlay2, sink, NULL); /* load qmlglsink output */ QQmlApplicationEngine engine; engine.load(QUrl(QStringLiteral("qrc:/main.qml"))); QQuickItem *videoItem; QQuickWindow *rootObject; /* find and set the videoItem on the sink */ rootObject = static_cast<QQuickWindow *> (engine.rootObjects().first()); videoItem = rootObject->findChild<QQuickItem *> ("videoItem"); g_assert (videoItem); g_object_set(sink, "widget", videoItem, NULL); QDirIterator it(":", QDirIterator::Subdirectories); while (it.hasNext()) { qDebug() << it.next(); } QFile f(":/overlay.qml"); if(!f.open(QIODevice::ReadOnly)) { qWarning() << "error: " << f.errorString(); return 1; } QByteArray overlay_scene = f.readAll(); qDebug() << overlay_scene; QFile f2(":/overlay2.qml"); if(!f2.open(QIODevice::ReadOnly)) { qWarning() << "error: " << f2.errorString(); return 1; } QByteArray overlay_scene2 = f2.readAll(); qDebug() << overlay_scene2; /* load qmlgloverlay contents */ g_signal_connect (overlay, "qml-scene-initialized", G_CALLBACK (on_overlay_scene_initialized), NULL); g_object_set (overlay, "qml-scene", overlay_scene.data(), NULL); g_signal_connect (overlay2, "qml-scene-initialized", G_CALLBACK (on_overlay_scene_initialized), NULL); g_object_set (overlay2, "qml-scene", overlay_scene2.data(), NULL); rootObject->scheduleRenderJob (new SetPlaying (pipeline), QQuickWindow::BeforeSynchronizingStage); ret = app.exec(); gst_element_set_state (pipeline, GST_STATE_NULL); gst_object_unref (pipeline); } gst_deinit (); return ret; }