mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-10-06 10:42:22 +00:00
examples: also add sink detection and set title to qt examples
Also set a title in the qt examples like it is now done in the gtk example. Fix the newly added find_video_sink in the gtk example and add similar function to the qt examples.
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236b707cd2
commit
1b41c2696d
3 changed files with 120 additions and 23 deletions
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@ -42,44 +42,49 @@ window_closed (GtkWidget * widget, GdkEvent * event, gpointer user_data)
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gtk_main_quit ();
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gtk_main_quit ();
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}
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}
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/* slightly convoluted way to find a working video sink that's not a bin */
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/* slightly convoluted way to find a working video sink that's not a bin,
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* one could use autovideosink from gst-plugins-good instead
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*/
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static GstElement *
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static GstElement *
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find_video_sink (void)
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find_video_sink (void)
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{
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{
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GstStateChangeReturn sret;
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GstStateChangeReturn sret;
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GstElement *sink;
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GstElement *sink;
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sink = gst_element_factory_make ("xvimagesink", NULL);
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if ((sink = gst_element_factory_make ("xvimagesink", NULL))) {
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sret = gst_element_set_state (sink, GST_STATE_READY);
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sret = gst_element_set_state (sink, GST_STATE_READY);
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if (sret == GST_STATE_CHANGE_SUCCESS)
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if (sret == GST_STATE_CHANGE_SUCCESS)
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return sink;
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return sink;
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gst_element_set_state (sink, GST_STATE_NULL);
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gst_element_set_state (sink, GST_STATE_NULL);
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}
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gst_object_unref (sink);
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gst_object_unref (sink);
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sink = gst_element_factory_make ("ximagesink", NULL);
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if ((sink = gst_element_factory_make ("ximagesink", NULL))) {
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sret = gst_element_set_state (sink, GST_STATE_READY);
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sret = gst_element_set_state (sink, GST_STATE_READY);
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if (sret == GST_STATE_CHANGE_SUCCESS)
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if (sret == GST_STATE_CHANGE_SUCCESS)
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return sink;
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return sink;
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gst_element_set_state (sink, GST_STATE_NULL);
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gst_element_set_state (sink, GST_STATE_NULL);
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}
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gst_object_unref (sink);
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gst_object_unref (sink);
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if (strcmp (DEFAULT_VIDEOSINK, "xvimagesink") == 0 ||
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if (strcmp (DEFAULT_VIDEOSINK, "xvimagesink") == 0 ||
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strcmp (DEFAULT_VIDEOSINK, "ximagesink") == 0)
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strcmp (DEFAULT_VIDEOSINK, "ximagesink") == 0)
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return NULL;
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return NULL;
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sink = gst_element_factory_make (DEFAULT_VIDEOSINK, NULL);
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if ((sink = gst_element_factory_make (DEFAULT_VIDEOSINK, NULL))) {
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if (GST_IS_BIN (sink)) {
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if (GST_IS_BIN (sink)) {
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gst_object_unref (sink);
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gst_object_unref (sink);
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return NULL;
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return NULL;
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}
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sret = gst_element_set_state (sink, GST_STATE_READY);
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if (sret == GST_STATE_CHANGE_SUCCESS)
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return sink;
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gst_element_set_state (sink, GST_STATE_NULL);
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}
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}
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sret = gst_element_set_state (sink, GST_STATE_READY);
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if (sret == GST_STATE_CHANGE_SUCCESS)
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return sink;
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gst_element_set_state (sink, GST_STATE_NULL);
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gst_object_unref (sink);
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gst_object_unref (sink);
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return NULL;
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return NULL;
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}
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}
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@ -31,6 +31,53 @@
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#include <QTimer>
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#include <QTimer>
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#include <QWidget>
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#include <QWidget>
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/* slightly convoluted way to find a working video sink that's not a bin,
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* one could use autovideosink from gst-plugins-good instead
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*/
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static GstElement *
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find_video_sink (void)
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{
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GstStateChangeReturn sret;
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GstElement *sink;
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if ((sink = gst_element_factory_make ("xvimagesink", NULL))) {
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sret = gst_element_set_state (sink, GST_STATE_READY);
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if (sret == GST_STATE_CHANGE_SUCCESS)
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return sink;
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gst_element_set_state (sink, GST_STATE_NULL);
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}
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gst_object_unref (sink);
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if ((sink = gst_element_factory_make ("ximagesink", NULL))) {
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sret = gst_element_set_state (sink, GST_STATE_READY);
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if (sret == GST_STATE_CHANGE_SUCCESS)
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return sink;
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gst_element_set_state (sink, GST_STATE_NULL);
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}
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gst_object_unref (sink);
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if (strcmp (DEFAULT_VIDEOSINK, "xvimagesink") == 0 ||
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strcmp (DEFAULT_VIDEOSINK, "ximagesink") == 0)
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return NULL;
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if ((sink = gst_element_factory_make (DEFAULT_VIDEOSINK, NULL))) {
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if (GST_IS_BIN (sink)) {
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gst_object_unref (sink);
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return NULL;
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}
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sret = gst_element_set_state (sink, GST_STATE_READY);
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if (sret == GST_STATE_CHANGE_SUCCESS)
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return sink;
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gst_element_set_state (sink, GST_STATE_NULL);
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}
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gst_object_unref (sink);
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return NULL;
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}
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int main(int argc, char *argv[])
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int main(int argc, char *argv[])
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{
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{
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if (!g_thread_supported ())
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if (!g_thread_supported ())
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@ -44,7 +91,11 @@ int main(int argc, char *argv[])
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GstElement *pipeline = gst_pipeline_new ("xvoverlay");
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GstElement *pipeline = gst_pipeline_new ("xvoverlay");
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GstElement *src = gst_element_factory_make ("videotestsrc", NULL);
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GstElement *src = gst_element_factory_make ("videotestsrc", NULL);
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GstElement *sink = gst_element_factory_make ("xvimagesink", NULL);
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GstElement *sink = find_video_sink ();
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if (sink == NULL)
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g_error ("Couldn't find a working video sink.");
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gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
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gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
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gst_element_link (src, sink);
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gst_element_link (src, sink);
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@ -52,6 +103,7 @@ int main(int argc, char *argv[])
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QWidget window;
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QWidget window;
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window.resize(320, 240);
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window.resize(320, 240);
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window.setWindowTitle("GstXOverlay Qt demo");
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window.show();
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window.show();
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WId xwinid = window.winId();
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WId xwinid = window.winId();
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@ -32,9 +32,48 @@
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SinkPipeline::SinkPipeline(QGraphicsView *parent) : QObject(parent)
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SinkPipeline::SinkPipeline(QGraphicsView *parent) : QObject(parent)
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{
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{
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GstStateChangeReturn sret;
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pipeline = gst_pipeline_new ("xvoverlay");
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pipeline = gst_pipeline_new ("xvoverlay");
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src = gst_element_factory_make ("videotestsrc", NULL);
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src = gst_element_factory_make ("videotestsrc", NULL);
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sink = gst_element_factory_make ("xvimagesink", NULL);
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if ((sink = gst_element_factory_make ("xvimagesink", NULL))) {
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sret = gst_element_set_state (sink, GST_STATE_READY);
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if (sret != GST_STATE_CHANGE_SUCCESS) {
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gst_element_set_state (sink, GST_STATE_NULL);
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gst_object_unref (sink);
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if ((sink = gst_element_factory_make ("ximagesink", NULL))) {
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sret = gst_element_set_state (sink, GST_STATE_READY);
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if (sret != GST_STATE_CHANGE_SUCCESS) {
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gst_element_set_state (sink, GST_STATE_NULL);
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gst_object_unref (sink);
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if (strcmp (DEFAULT_VIDEOSINK, "xvimagesink") != 0 &&
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strcmp (DEFAULT_VIDEOSINK, "ximagesink") != 0) {
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if ((sink = gst_element_factory_make (DEFAULT_VIDEOSINK, NULL))) {
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if (!GST_IS_BIN (sink)) {
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sret = gst_element_set_state (sink, GST_STATE_READY);
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if (sret != GST_STATE_CHANGE_SUCCESS) {
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gst_element_set_state (sink, GST_STATE_NULL);
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gst_object_unref (sink);
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sink = NULL;
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}
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} else {
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gst_object_unref (sink);
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sink = NULL;
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}
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}
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}
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}
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}
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}
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}
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if (sink == NULL)
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g_error ("Couldn't find a working video sink.");
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gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
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gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
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gst_element_link (src, sink);
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gst_element_link (src, sink);
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xwinid = parent->winId();
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xwinid = parent->winId();
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@ -74,6 +113,7 @@ int main( int argc, char **argv )
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QGraphicsView view( &scene );
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QGraphicsView view( &scene );
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view.resize(320, 240);
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view.resize(320, 240);
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view.setWindowTitle("GstXOverlay Qt GraphicsView demo");
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view.show();
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view.show();
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gst_init (&argc, &argv);
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gst_init (&argc, &argv);
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