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