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/* GStreamer X-based overlay interface implementation
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* gstv4l2xoverlay.c: X-based overlay interface implementation for V4L2
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/xoverlay/xoverlay.h>
#include <gst/xwindowlistener/xwindowlistener.h>
#include "gstv4l2xoverlay.h"
#include "gstv4l2element.h"
#include "v4l2_calls.h"
static void gst_v4l2_xoverlay_set_xwindow_id (GstXOverlay * overlay,
XID xwindow_id);
void
gst_v4l2_xoverlay_interface_init (GstXOverlayClass * klass)
{
/* default virtual functions */
klass->set_xwindow_id = gst_v4l2_xoverlay_set_xwindow_id;
}
GstXWindowListener *
gst_v4l2_xoverlay_new (GstV4l2Element * v4l2element)
{
GstXWindowListener *xwin = gst_x_window_listener_new (NULL,
(MapWindowFunc) gst_v4l2_enable_overlay,
(SetWindowFunc) gst_v4l2_set_window,
(gpointer) v4l2element);
v4l2element->overlay = xwin;
v4l2element->xwindow_id = 0;
return xwin;
}
void
gst_v4l2_xoverlay_free (GstV4l2Element * v4l2element)
{
gst_v4l2_xoverlay_close (v4l2element);
g_object_unref (G_OBJECT (v4l2element->overlay));
v4l2element->overlay = NULL;
}
void
gst_v4l2_xoverlay_open (GstV4l2Element * v4l2element)
{
GstXWindowListener *xwin = v4l2element->overlay;
if (xwin) {
xwin->display_name = g_strdup (v4l2element->display);
if (v4l2element->xwindow_id != 0 &&
xwin->display_name && xwin->display_name[0] == ':') {
gst_x_window_listener_set_xid (xwin, v4l2element->xwindow_id);
}
}
}
void
gst_v4l2_xoverlay_close (GstV4l2Element * v4l2element)
{
GstXWindowListener *xwin = v4l2element->overlay;
if (xwin != NULL) {
if (v4l2element->xwindow_id != 0 &&
xwin->display_name && xwin->display_name[0] == ':') {
gst_x_window_listener_set_xid (xwin, 0);
}
g_free (xwin->display_name);
xwin->display_name = NULL;
}
}
static void
gst_v4l2_xoverlay_set_xwindow_id (GstXOverlay * overlay, XID xwindow_id)
{
GstV4l2Element *v4l2element = GST_V4L2ELEMENT (overlay);
GstXWindowListener *xwin = v4l2element->overlay;
if (v4l2element->xwindow_id == xwindow_id) {
return;
}
if (gst_element_get_state (GST_ELEMENT (v4l2element)) != GST_STATE_NULL &&
v4l2element->xwindow_id != 0 &&
xwin != NULL && xwin->display_name && xwin->display_name[0] == ':') {
gst_x_window_listener_set_xid (xwin, 0);
}
v4l2element->xwindow_id = xwindow_id;
if (gst_element_get_state (GST_ELEMENT (v4l2element)) != GST_STATE_NULL &&
v4l2element->xwindow_id != 0 &&
xwin != NULL && xwin->display_name && xwin->display_name[0] == ':') {
gst_x_window_listener_set_xid (xwin, v4l2element->xwindow_id);
}
}
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