How to show the GStreamer video in Qt frameless window ?

Question

I am trying to show the gstreamer video in qt frameless window . My gstreamer pipeline for which i am creating code is :

This is my first question please answer me. My code is as below My code is working for a qt window. It is showing the video which it is receiving from rtsp link but i have two major issues in it:


I am using Qt-4.8.12 and gstreamer version 1.4.5 for windows 7 64 bit . Any help regarding these two issues is highly appreciated. Thanks in Advance.

 #include <glib.h> #include <gst/gst.h> #include <gst/video/videooverlay.h> #include <QApplication> #include <QTimer> #include <QWidget> #include <stdio.h> #include "qmainwindow.h" static void on_pad_added (GstElement *element, GstPad *pad, gpointer data); static gboolean bus_call (GstBus *bus, GstMessage *msg, gpointer data); int main(int argc, char *argv[]) { if (!g_thread_supported ()) g_thread_init (NULL); /* Initialize GStreamer */ gst_init (&argc, &argv); QApplication app(argc, argv); app.connect(&app, SIGNAL(lastWindowClosed()), &app, SLOT(quit ())); /* Creating Elements */ //GstElement *pipeLine = gst_pipeline_new ("xvoverlay"); QWidget window; // QMainWindow window; window.resize(1024,768); WId xwinid=window.winId(); GMainLoop *loop; GstElement *pipeLine, *rtspSrc, *rtpJitterBuffer, *rtpH264Depay, *avDecH264, *videoSink; rtspSrc = gst_element_factory_make("rtspsrc", NULL); rtpJitterBuffer = gst_element_factory_make("rtpjitterbuffer", NULL); rtpH264Depay = gst_element_factory_make("rtph264depay", NULL); avDecH264 = gst_element_factory_make("avdec_h264", NULL); videoSink = gst_element_factory_make("d3dvideosink", NULL); loop = g_main_loop_new (NULL, FALSE); if (!rtspSrc || !rtpJitterBuffer || !rtpH264Depay || !avDecH264 || !videoSink) { g_printerr ("Not all elements could be created.\\n"); return -1; } /* Set element properties */ g_object_set( rtspSrc, "location", "rtsp://192.168.1.16:8554/test" , NULL); g_object_set( videoSink, "sync", false, NULL); /*Initializing Pipeline*/ pipeLine = gst_pipeline_new ("TestPipeLine"); if (!pipeLine) { g_printerr ("Pipeline could not be created."); } /* we add a message handler */ GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE (pipeLine)); gst_bus_add_watch (bus, bus_call, loop); gst_object_unref (bus); /*Adding Components to the pipeline */ gst_bin_add_many (GST_BIN(pipeLine), rtspSrc, rtpJitterBuffer, rtpH264Depay, avDecH264, videoSink, NULL); /* if (gst_element_link (rtspSrc, rtpJitterBuffer) != TRUE) { g_printerr ("rtspSrc & rtpJitterBuffer could not be linked.\\n"); gst_object_unref (pipeLine); return -1; } */ if (gst_element_link (rtpJitterBuffer, rtpH264Depay) != TRUE) { g_printerr ("rtpJitterBuffer and rtpH264Depay could not be linked.\\n"); gst_object_unref (pipeLine); return -1; } if (gst_element_link (rtpH264Depay, avDecH264) != TRUE) { g_printerr ("rtpH264Depay and avDecH264 could not be linked.\\n"); gst_object_unref (pipeLine); return -1; } if (gst_element_link (avDecH264, videoSink) != TRUE) { g_printerr ("avDecH264 and videoSink could not be linked.\\n"); gst_object_unref (pipeLine); return -1; } g_signal_connect (rtspSrc, "pad-added", G_CALLBACK (on_pad_added), rtpJitterBuffer); window.setWindowFlags(Qt::FramelessWindowHint); // else // g_printerr("Pipeline created");zz gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY(videoSink), guintptr(xwinid)); window.show(); /* Set the pipeline to "playing" state*/ g_print ("Now playing: %s\\n", argv[1]); gst_element_set_state (pipeLine, GST_STATE_PLAYING); app.exec(); /* Iterate */ g_print ("Running...\\n"); g_main_loop_run (loop); /* Out of the main loop, clean up nicely */ g_print ("Returned, stopping playback\\n"); gst_element_set_state (pipeLine, GST_STATE_NULL); g_print ("Deleting pipeline\\n"); gst_object_unref (GST_OBJECT (pipeLine)); return 0; } static void on_pad_added (GstElement *element, GstPad *pad, gpointer data) { GstPad *sinkpad; GstElement *decoder = (GstElement *) data; /* We can now link this pad with the vorbis-decoder sink pad */ g_print ("Dynamic pad created, linking demuxer/decoder\\n"); sinkpad = gst_element_get_static_pad (decoder, "sink"); gst_pad_link (pad, sinkpad); gst_object_unref (sinkpad); } static gboolean bus_call (GstBus *bus, GstMessage *msg, gpointer data) { GMainLoop *loop = (GMainLoop *) data; switch (GST_MESSAGE_TYPE (msg)) { case GST_MESSAGE_EOS: g_print ("End of stream\\n"); g_main_loop_quit (loop); break; case GST_MESSAGE_ERROR: { gchar *debug; GError *error; gst_message_parse_error (msg, &error, &debug); g_free (debug); g_printerr ("Error: %s\\n", error->message); g_error_free (error); g_main_loop_quit (loop); break; } default: break; } return TRUE; } 

Answer 1

If you switch back to using QWindow, this will work:

window.setWindowFlags (Qt::FramelessWindowHint);

I'm not sure how, but I think something similar is available for QWidget.