mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-19 08:11:16 +00:00
659c45ee7e
Based on the Qt5 version of qmlgloverlay. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3845>
127 lines
3.5 KiB
C++
127 lines
3.5 KiB
C++
#include <QApplication>
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#include <QQmlApplicationEngine>
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#include <QQuickWindow>
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#include <QQuickItem>
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#include <QRunnable>
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#include <QDirIterator>
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#include <gst/gst.h>
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class SetPlaying : public QRunnable
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{
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public:
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SetPlaying(GstElement *);
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~SetPlaying();
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void run ();
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private:
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GstElement * pipeline_;
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};
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SetPlaying::SetPlaying (GstElement * pipeline)
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{
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this->pipeline_ = pipeline ? static_cast<GstElement *> (gst_object_ref (pipeline)) : NULL;
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}
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SetPlaying::~SetPlaying ()
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{
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if (this->pipeline_)
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gst_object_unref (this->pipeline_);
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}
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void
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SetPlaying::run ()
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{
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if (this->pipeline_)
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gst_element_set_state (this->pipeline_, GST_STATE_PLAYING);
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}
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static void
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on_overlay_scene_initialized (GstElement * overlay, gpointer unused)
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{
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QQuickItem *rootObject;
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GST_INFO ("scene initialized");
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g_object_get (overlay, "root-item", &rootObject, NULL);
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QQuickItem *videoItem = rootObject->findChild<QQuickItem *> ("inputVideoItem");
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g_object_set (overlay, "widget", videoItem, NULL);
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}
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int main(int argc, char *argv[])
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{
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int ret;
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gst_init (&argc, &argv);
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{
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QGuiApplication app(argc, argv);
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QQuickWindow::setGraphicsApi(QSGRendererInterface::OpenGL);
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GstElement *pipeline = gst_pipeline_new (NULL);
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GstElement *src = gst_element_factory_make ("videotestsrc", NULL);
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GstElement *glupload = gst_element_factory_make ("glupload", NULL);
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/* the plugin must be loaded before loading the qml file to register the
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* GstGLVideoItem qml item */
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GstElement *overlay = gst_element_factory_make ("qml6gloverlay", NULL);
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GstElement *overlay2 = gst_element_factory_make ("qml6gloverlay", NULL);
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GstElement *sink = gst_element_factory_make ("qml6glsink", NULL);
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g_assert (src && glupload && overlay && sink);
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gst_bin_add_many (GST_BIN (pipeline), src, glupload, overlay, overlay2, sink, NULL);
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gst_element_link_many (src, glupload, overlay, overlay2, sink, NULL);
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/* load qmlglsink output */
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QQmlApplicationEngine engine;
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engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
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QQuickItem *videoItem;
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QQuickWindow *rootObject;
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/* find and set the videoItem on the sink */
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rootObject = static_cast<QQuickWindow *> (engine.rootObjects().first());
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videoItem = rootObject->findChild<QQuickItem *> ("videoItem");
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g_assert (videoItem);
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g_object_set(sink, "widget", videoItem, NULL);
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QDirIterator it(":", QDirIterator::Subdirectories);
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while (it.hasNext()) {
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qDebug() << it.next();
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}
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QFile f(":/overlay.qml");
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if(!f.open(QIODevice::ReadOnly)) {
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qWarning() << "error: " << f.errorString();
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return 1;
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}
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QByteArray overlay_scene = f.readAll();
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qDebug() << overlay_scene;
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QFile f2(":/overlay2.qml");
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if(!f2.open(QIODevice::ReadOnly)) {
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qWarning() << "error: " << f2.errorString();
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return 1;
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}
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QByteArray overlay_scene2 = f2.readAll();
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qDebug() << overlay_scene2;
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/* load qmlgloverlay contents */
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g_signal_connect (overlay, "qml-scene-initialized", G_CALLBACK (on_overlay_scene_initialized), NULL);
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g_object_set (overlay, "qml-scene", overlay_scene.data(), NULL);
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g_signal_connect (overlay2, "qml-scene-initialized", G_CALLBACK (on_overlay_scene_initialized), NULL);
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g_object_set (overlay2, "qml-scene", overlay_scene2.data(), NULL);
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rootObject->scheduleRenderJob (new SetPlaying (pipeline),
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QQuickWindow::BeforeSynchronizingStage);
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ret = app.exec();
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gst_element_set_state (pipeline, GST_STATE_NULL);
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gst_object_unref (pipeline);
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}
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gst_deinit ();
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return ret;
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}
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