mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-25 03:01:03 +00:00
120 lines
3.4 KiB
C
120 lines
3.4 KiB
C
/* 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);
|
|
}
|
|
}
|