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149 lines
4.1 KiB
C
149 lines
4.1 KiB
C
/* GStreamer
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* Copyright (C) <2010> Stefan Kost <ensonic@users.sf.net>
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*
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* gtk-xoverlay: demonstrate overlay handling using gtk
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <glib.h>
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#include <gdk/gdkx.h>
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#include <gtk/gtk.h>
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#include <gst/gst.h>
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#include <gst/interfaces/xoverlay.h>
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#include <string.h>
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static void
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window_closed (GtkWidget * widget, GdkEvent * event, gpointer user_data)
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{
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GstElement *pipeline = user_data;
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gtk_widget_hide_all (widget);
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gst_element_set_state (pipeline, GST_STATE_NULL);
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gtk_main_quit ();
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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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* 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
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main (int argc, char **argv)
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{
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GdkWindow *video_window_xwindow;
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GtkWidget *window, *video_window;
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GstElement *pipeline, *src, *sink;
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gulong embed_xid;
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GstStateChangeReturn sret;
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if (!g_thread_supported ())
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g_thread_init (NULL);
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gst_init (&argc, &argv);
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gtk_init (&argc, &argv);
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/* prepare the pipeline */
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pipeline = gst_pipeline_new ("xvoverlay");
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src = gst_element_factory_make ("videotestsrc", NULL);
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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_element_link (src, sink);
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/* prepare the ui */
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window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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g_signal_connect (G_OBJECT (window), "delete-event",
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G_CALLBACK (window_closed), (gpointer) pipeline);
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gtk_window_set_default_size (GTK_WINDOW (window), 320, 240);
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gtk_window_set_title (GTK_WINDOW (window), "GstXOverlay Gtk+ demo");
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video_window = gtk_drawing_area_new ();
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gtk_widget_set_double_buffered (video_window, FALSE);
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gtk_container_add (GTK_CONTAINER (window), video_window);
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gtk_container_set_border_width (GTK_CONTAINER (window), 16);
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gtk_widget_show_all (window);
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gtk_widget_realize (window);
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video_window_xwindow = gtk_widget_get_window (video_window);
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embed_xid = GDK_WINDOW_XID (video_window_xwindow);
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gst_x_overlay_set_xwindow_id (GST_X_OVERLAY (sink), embed_xid);
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/* run the pipeline */
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sret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
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if (sret == GST_STATE_CHANGE_FAILURE)
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gst_element_set_state (pipeline, GST_STATE_NULL);
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else
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gtk_main ();
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gst_object_unref (pipeline);
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return 0;
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}
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