mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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2ebfe048cc
Original commit message from CVS: Move over from GstInterface to GstImplementsInterface. Also adds some signals to several interfaces
122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
/* GStreamer X-based Overlay
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* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
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*
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* tv-mixer.c: tv-mixer design virtual class function wrappers
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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 "xoverlay.h"
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enum {
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HAVE_XWINDOW_ID,
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LAST_SIGNAL
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};
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static guint gst_x_overlay_signals[LAST_SIGNAL] = { 0 };
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static void gst_x_overlay_base_init (gpointer g_class);
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GType
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gst_x_overlay_get_type (void)
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{
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static GType gst_x_overlay_type = 0;
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if (!gst_x_overlay_type) {
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static const GTypeInfo gst_x_overlay_info = {
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sizeof (GstXOverlayClass),
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gst_x_overlay_base_init,
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NULL,
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NULL,
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NULL,
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NULL,
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0,
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0,
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NULL,
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};
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gst_x_overlay_type = g_type_register_static (G_TYPE_INTERFACE,
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"GstXOverlay",
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&gst_x_overlay_info, 0);
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g_type_interface_add_prerequisite (gst_x_overlay_type,
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GST_TYPE_IMPLEMENTS_INTERFACE);
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}
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return gst_x_overlay_type;
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}
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static void
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gst_x_overlay_base_init (gpointer g_class)
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{
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static gboolean initialized = FALSE;
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if (! initialized)
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{
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gst_x_overlay_signals[HAVE_XWINDOW_ID] =
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g_signal_new ("have_xwindow_id",
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GST_TYPE_X_OVERLAY, G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GstXOverlayClass, have_xwindow_id),
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NULL, NULL,
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g_cclosure_marshal_VOID__POINTER, G_TYPE_NONE, 1,
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G_TYPE_POINTER);
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initialized = TRUE;
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}
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GST_X_OVERLAY_CLASS (g_class)->set_xwindow_id = NULL;
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}
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/**
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* gst_x_overlay_set_xwindow_id:
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* @overlay: a #GstXOverlay to set the XWindow on.
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* @xwindow_id: a #XID referencing the XWindow.
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*
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* This will call the video overlay's set_xwindow_id method. You should
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* use this method to tell to a XOverlay to display video output to a
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* specific XWindow.
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*/
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void
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gst_x_overlay_set_xwindow_id (GstXOverlay *overlay, XID xwindow_id)
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{
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GstXOverlayClass *klass = GST_X_OVERLAY_GET_CLASS (overlay);
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if (klass->set_xwindow_id) {
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klass->set_xwindow_id (overlay, xwindow_id);
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}
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}
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/**
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* gst_x_overlay_got_xwindow_id:
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* @overlay: a #GstXOverlay which got a XWindow.
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* @xwindow_id: a #XID referencing the XWindow.
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*
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* This will fire an have_xwindow_id signal.
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*
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* This function should be used by video overlay developpers.
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*/
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void
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gst_x_overlay_got_xwindow_id (GstXOverlay *overlay, XID xwindow_id)
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{
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g_return_if_fail (overlay != NULL);
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g_return_if_fail (GST_IS_X_OVERLAY (overlay));
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g_signal_emit (G_OBJECT (overlay),
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gst_x_overlay_signals[HAVE_XWINDOW_ID], 0, xwindow_id);
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}
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