|
|
Hi all,
I have using playbin to build a test application.Usually, it works properly.
But when I use gst_x_overlay_set_xwindow_id to assign the window to display, using the application to decode jpeg file leads to error(other video like wmv works properly).
The error message looks like :
(playbin:6212): GLib-GObject-WARNING **: invalid unclassed pointer in cast to `GstBuffer'
(playbin:6212): GStreamer-CRITICAL **: gst_mini_object_ref: assertion `GST_IS_MINI_OBJECT (mini_object)' failed
Related code is
static gboolean expose_cb(GtkWidget * widget, GdkEventExpose * event, gpointer data)
{
gst_x_overlay_set_xwindow_id(GST_X_OVERLAY(data), GDK_WINDOW_XWINDOW(widget->window));
return TRUE;
}
int main (int argc, char *argv[])
{
GstElement *player, *videosink;
GtkWidget *window;
.....
player=gst_element_factory_make ("playbin", "player");
videosink=gst_element_factory_make ("xvimagesink", "video sink");
g_object_set(G_OBJECT (player), "video-sink", videosink, NULL);
window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
g_signal_connect(G_OBJECT(window), "expose-event", G_CALLBACK(expose_cb), videosink);
....
}
Second, how to grab /insert raw video data(ex. yuv rgb) from/into pipeline? Since I would like to have some visual effect when I display photos.Or I need to make a plug-in by my own?
|
Locked
