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/* GStreamer
* Copyright (C) <2010> Stefan Kost <ensonic@users.sf.net>
*
* gtk-videooverlay: demonstrate overlay handling using gtk
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define GDK_VERSION_MIN_REQUIRED (GDK_VERSION_3_0)
#include <glib.h>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>
#include <gst/gst.h>
#include <gst/video/videooverlay.h>
#include <string.h>
static void
window_closed (GtkWidget * widget, GdkEvent * event, gpointer user_data)
{
GstElement *pipeline = user_data;
gtk_widget_hide (widget);
gst_element_set_state (pipeline, GST_STATE_NULL);
gtk_main_quit ();
}
/* slightly convoluted way to find a working video sink that's not a bin,
* one could use autovideosink from gst-plugins-good instead
*/
static GstElement *
find_video_sink (void)
{
GstStateChangeReturn sret;
GstElement *sink;
if ((sink = gst_element_factory_make ("xvimagesink", NULL))) {
sret = gst_element_set_state (sink, GST_STATE_READY);
if (sret == GST_STATE_CHANGE_SUCCESS)
return sink;
gst_element_set_state (sink, GST_STATE_NULL);
gst_object_unref (sink);
}
if ((sink = gst_element_factory_make ("ximagesink", NULL))) {
sret = gst_element_set_state (sink, GST_STATE_READY);
if (sret == GST_STATE_CHANGE_SUCCESS)
return sink;
gst_element_set_state (sink, GST_STATE_NULL);
gst_object_unref (sink);
}
if (strcmp (DEFAULT_VIDEOSINK, "xvimagesink") == 0 ||
strcmp (DEFAULT_VIDEOSINK, "ximagesink") == 0)
return NULL;
if ((sink = gst_element_factory_make (DEFAULT_VIDEOSINK, NULL))) {
if (GST_IS_BIN (sink)) {
gst_object_unref (sink);
return NULL;
}
sret = gst_element_set_state (sink, GST_STATE_READY);
if (sret == GST_STATE_CHANGE_SUCCESS)
return sink;
gst_element_set_state (sink, GST_STATE_NULL);
gst_object_unref (sink);
}
return NULL;
}
int
main (int argc, char **argv)
{
GdkWindow *video_window_xwindow;
GtkWidget *window, *video_window;
GstElement *pipeline, *src, *sink;
gulong embed_xid;
GstStateChangeReturn sret;
gst_init (&argc, &argv);
gtk_init (&argc, &argv);
/* prepare the pipeline */
pipeline = gst_pipeline_new ("xvoverlay");
src = gst_element_factory_make ("videotestsrc", NULL);
sink = find_video_sink ();
if (sink == NULL)
g_error ("Couldn't find a working video sink.");
gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
gst_element_link (src, sink);
/* prepare the ui */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
g_signal_connect (G_OBJECT (window), "delete-event",
G_CALLBACK (window_closed), (gpointer) pipeline);
gtk_window_set_default_size (GTK_WINDOW (window), 320, 240);
gtk_window_set_title (GTK_WINDOW (window), "GstVideoOverlay Gtk+ demo");
video_window = gtk_drawing_area_new ();
gtk_container_add (GTK_CONTAINER (window), video_window);
gtk_container_set_border_width (GTK_CONTAINER (window), 16);
gtk_widget_show_all (window);
video_window_xwindow = gtk_widget_get_window (video_window);
embed_xid = GDK_WINDOW_XID (video_window_xwindow);
gst_video_overlay_set_window_handle (GST_VIDEO_OVERLAY (sink), embed_xid);
/* run the pipeline */
sret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
if (sret == GST_STATE_CHANGE_FAILURE)
gst_element_set_state (pipeline, GST_STATE_NULL);
else
gtk_main ();
gst_object_unref (pipeline);
return 0;
}
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