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authorRonald S. Bultje <rbultje@ronald.bitfreak.net>2003-10-10 12:47:42 +0000
committerRonald S. Bultje <rbultje@ronald.bitfreak.net>2003-10-10 12:47:42 +0000
commitaa94247770732a40e46ab3d539dd9987062abef4 (patch)
tree1509ca08f33718ccb6cb63f1c1ad1f5b4752801b /gst-libs/gst/xwindowlistener
parent39b91cdb495b9f9b326e79a10f64753a097c203c (diff)
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Some interface implementations for video4linux/video4linux2 plugins: a Tuner interface, with which one can select inp...
Original commit message from CVS: Some interface implementations for video4linux/video4linux2 plugins: * a Tuner interface, with which one can select inputs and stations. Audio work is underway here, but unfinished. * A Xoverlay interface with which one can do simple overlay. Similar to the API of the v4l/Xv XFree86 extension. Widget implementation for GTK-2.0 coming up in the sandbox. * Colorbalance - for adapting colors (brightness, contrast, etc.) - pretty basic and maybe somewhat overdesigned. But it'll do for now. Apart from these interfaces, there's also a loadable library 'xwindowlistener' that listenes to X for the movement of a window and the overlap of other windows. This is partly copied from xawtv (and thus partly GPL :(), but it's needed for the xoverlay interface implementation in the v4l/v4l2 elements. Lastly, some small changes to remove redundant properties from the v4l/v4l2 elements since these can be done much simpler. Comments appreciated!
Diffstat (limited to 'gst-libs/gst/xwindowlistener')
-rw-r--r--gst-libs/gst/xwindowlistener/Makefile.am11
-rw-r--r--gst-libs/gst/xwindowlistener/xwindowlistener.c656
-rw-r--r--gst-libs/gst/xwindowlistener/xwindowlistener.h116
3 files changed, 783 insertions, 0 deletions
diff --git a/gst-libs/gst/xwindowlistener/Makefile.am b/gst-libs/gst/xwindowlistener/Makefile.am
new file mode 100644
index 00000000..a3a589ba
--- /dev/null
+++ b/gst-libs/gst/xwindowlistener/Makefile.am
@@ -0,0 +1,11 @@
+librarydir = $(libdir)/gstreamer-@GST_MAJORMINOR@
+
+library_LTLIBRARIES = libgstxwindowlistener.la
+
+libgstxwindowlistener_la_SOURCES = xwindowlistener.c
+
+libraryincludedir = $(includedir)/gstreamer-@GST_MAJORMINOR@/gst/xwindowlistener
+libraryinclude_HEADERS = xwindowlistener.h
+
+libgstxwindowlistener_la_CFLAGS = $(GST_CFLAGS) $(X_CFLAGS)
+libgstxwindowlistener_la_LIBADD = $(GST_LIBS) $(GST_PLUGIN_LIBS) $(X_LIBS)
diff --git a/gst-libs/gst/xwindowlistener/xwindowlistener.c b/gst-libs/gst/xwindowlistener/xwindowlistener.c
new file mode 100644
index 00000000..0a400a53
--- /dev/null
+++ b/gst-libs/gst/xwindowlistener/xwindowlistener.c
@@ -0,0 +1,656 @@
+/* G-Streamer X11 Window event/motion listener
+ * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
+ *
+ * xwindowlistener.c: implementation of the object
+ *
+ * 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 "xwindowlistener.h"
+
+#define NUM_CLIPS 1024
+
+static void gst_x_window_listener_class_init (GstXWindowListenerClass *klass);
+static void gst_x_window_listener_init (GstXWindowListener *xwin);
+static void gst_x_window_listener_dispose (GObject *object);
+
+static void gst_xwin_start (GstXWindowListener *xwin);
+static void gst_xwin_stop (GstXWindowListener *xwin);
+
+static GObjectClass *parent_class = NULL;
+
+GType
+gst_x_window_listener_get_type (void)
+{
+ static GType x_window_listener_type = 0;
+
+ if (!x_window_listener_type) {
+ static const GTypeInfo x_window_listener_info = {
+ sizeof (GstXWindowListenerClass),
+ NULL,
+ NULL,
+ (GClassInitFunc) gst_x_window_listener_class_init,
+ NULL,
+ NULL,
+ sizeof (GstXWindowListener),
+ 0,
+ (GInstanceInitFunc) gst_x_window_listener_init,
+ NULL
+ };
+
+ x_window_listener_type =
+ g_type_register_static (G_TYPE_OBJECT,
+ "GstXWindowListener",
+ &x_window_listener_info, 0);
+ }
+
+ return x_window_listener_type;
+}
+
+static void
+gst_x_window_listener_class_init (GstXWindowListenerClass *klass)
+{
+ GObjectClass *object_klass = (GObjectClass *) klass;
+
+ parent_class = g_type_class_ref (G_TYPE_OBJECT);
+
+ object_klass->dispose = gst_x_window_listener_dispose;
+}
+
+static void
+gst_x_window_listener_init (GstXWindowListener *xwin)
+{
+ xwin->xwindow_id = 0;
+ xwin->display_name = NULL;
+
+ xwin->map_window_func = NULL;
+ xwin->set_window_func = NULL;
+
+ xwin->thread = NULL;
+}
+
+static void
+gst_x_window_listener_dispose (GObject *object)
+{
+ GstXWindowListener *xwin = GST_X_WINDOW_LISTENER (object);
+
+ /* stop overlay */
+ gst_x_window_listener_set_xid (xwin, 0);
+
+ if (xwin->display_name) {
+ g_free (xwin->display_name);
+ }
+
+ if (parent_class->dispose) {
+ parent_class->dispose (object);
+ }
+}
+
+GstXWindowListener *
+gst_x_window_listener_new (gchar *display,
+ MapWindowFunc map_window_func,
+ SetWindowFunc set_window_func,
+ gpointer private_data)
+{
+ GstXWindowListener *xwin =
+ g_object_new (GST_TYPE_X_WINDOW_LISTENER, NULL);
+
+ xwin->display_name = g_strdup (display);
+ xwin->map_window_func = map_window_func;
+ xwin->set_window_func = set_window_func;
+ xwin->private_data = private_data;
+
+ return xwin;
+}
+
+void
+gst_x_window_listener_set_xid (GstXWindowListener *xwin,
+ XID id)
+{
+ g_return_if_fail (xwin != NULL);
+
+ if (id == xwin->xwindow_id) {
+ return;
+ }
+
+ if (xwin->xwindow_id && xwin->thread) {
+ gst_xwin_stop (xwin);
+ }
+
+ xwin->xwindow_id = id;
+
+ if (xwin->xwindow_id &&
+ xwin->display_name &&
+ xwin->display_name[0] == ':') {
+ g_return_if_fail (xwin->map_window_func != NULL);
+ g_return_if_fail (xwin->set_window_func != NULL);
+
+ gst_xwin_start (xwin);
+ }
+}
+
+/*
+ * The following code works as follows:
+ * - the "client" (the one who uses this object) sets an XID
+ * - we add a child XWindow to this XID, and follow motion/events
+ * - after each event, we determine the position, size and clips
+ * - next, we call the per-instance virtual functions set by the client
+ * - and we do all this in an endless cycle
+ *
+ * Unfortunately, part of this code is inspired by XawTV, so the
+ * runtime license for this code as a whole will be GPL unless
+ * someone can rewrite this or ask permission to the original
+ * author (Gerd Knorr <kraxel@bytesex.org>) to let us re-license
+ * this piece of code to LGPL.
+ */
+
+#define DEBUG(format, args...) \
+ GST_DEBUG ("XWL: " format, ##args)
+
+static void
+gst_xwin_set_overlay (GstXWindowListener *xwin,
+ gboolean on)
+{
+ xwin->map_window_func (xwin->private_data, on);
+
+ /* remember me */
+ xwin->ov_visible = on;
+}
+
+static gboolean
+gst_xwin_refresh (gpointer data)
+{
+ GstXWindowListener *xwin = GST_X_WINDOW_LISTENER (data);
+ Window win, tmp;
+ XSetWindowAttributes xswa;
+ XWindowAttributes attr;
+
+ g_mutex_lock (xwin->main_lock);
+
+ win = DefaultRootWindow (xwin->main_display);
+ XGetWindowAttributes (xwin->main_display, win, &attr);
+
+ xwin->ov_refresh_id = 0;
+
+ if (!xwin->ov_move && xwin->ov_map &&
+ xwin->ov_visibility == VisibilityUnobscured) {
+ g_mutex_unlock (xwin->main_lock);
+ return FALSE; /* skip */
+ }
+
+ if (xwin->ov_map &&
+ xwin->ov_visibility != VisibilityFullyObscured) {
+ xwin->ov_refresh = TRUE;
+ }
+
+ xswa.override_redirect = True;
+ xswa.backing_store = NotUseful;
+ xswa.save_under = False;
+ tmp = XCreateWindow (xwin->main_display,win, 0, 0,
+ attr.width, attr.height, 0,
+ CopyFromParent, InputOutput, CopyFromParent,
+ (CWSaveUnder | CWBackingStore| CWOverrideRedirect ),
+ &xswa);
+ XMapWindow (xwin->main_display, tmp);
+ XUnmapWindow (xwin->main_display, tmp);
+ XDestroyWindow (xwin->main_display, tmp);
+ xwin->ov_move = FALSE;
+
+ g_mutex_unlock (xwin->main_lock);
+
+ /* once */
+ return FALSE;
+}
+
+static int
+x11_error_dev_null (Display *display,
+ XErrorEvent *event)
+{
+ return 0;
+}
+
+#define ADD_CLIP(_x, _y, _w, _h) \
+ do { \
+ GstXWindowClip *clip = &xwin->clips[xwin->num_clips++]; \
+ clip->x_offset = _x; \
+ clip->y_offset = _y; \
+ clip->width = _w; \
+ clip->height = _h; \
+ clip->data = NULL; \
+ } while (0);
+
+static void
+gst_xwin_set_clips (GstXWindowListener *xwin)
+{
+ Window root, rroot, parent, *kids, me;
+ XWindowAttributes attr;
+ guint numkids;
+ gint i;
+ gint x1, y1, w1, h1;
+ void *old_handler;
+
+ old_handler = XSetErrorHandler (x11_error_dev_null);
+
+ if (xwin->num_clips != 0)
+ xwin->ov_conf = TRUE;
+ xwin->num_clips = 0;
+
+ root = DefaultRootWindow (xwin->display);
+ XGetWindowAttributes (xwin->display, root, &attr);
+
+ if (xwin->x < 0)
+ ADD_CLIP (0, 0, -xwin->x, xwin->h);
+ if (xwin->y < 0)
+ ADD_CLIP (0, 0, xwin->w, -xwin->y);
+ if ((xwin->x + xwin->w) > attr.width)
+ ADD_CLIP (attr.width - xwin->x, 0, xwin->w, xwin->h);
+ if ((xwin->y + xwin->h) > attr.height)
+ ADD_CLIP (0, attr.height - xwin->y, xwin->w, xwin->h);
+
+ me = xwin->child;
+ while (1) {
+ XQueryTree (xwin->display, me, &rroot, &parent, &kids, &numkids);
+ if (numkids)
+ XFree (kids);
+ if (root == parent)
+ break;
+ me = parent;
+ }
+
+ XQueryTree (xwin->display, root, &rroot, &parent, &kids, &numkids);
+ for (i = 0; i < numkids; i++)
+ if (kids[i] == me)
+ break;
+
+ for (i++; i < numkids; i++) {
+ XGetWindowAttributes (xwin->display, kids[i], &attr);
+ if (attr.map_state != IsViewable)
+ continue;
+
+ x1 = attr.x - xwin->x;
+ y1 = attr.y - xwin->y;
+ w1 = attr.width + 2 * attr.border_width;
+ h1 = attr.height + 2 * attr.border_width;
+ if (((x1 + w1) < 0) || (x1 > xwin->w) ||
+ ((y1 + h1) < 0) || (y1 > xwin->h))
+ continue;
+
+ if (x1 < 0)
+ x1 = 0;
+ if (y1 < 0)
+ y1 = 0;
+ ADD_CLIP (x1, y1, w1, h1);
+ }
+ XFree (kids);
+
+ if (xwin->num_clips != 0)
+ xwin->ov_conf = TRUE;
+
+ XSetErrorHandler (old_handler);
+}
+
+
+static gboolean
+gst_xwin_window (GstXWindowListener *xwin)
+{
+ if (xwin->ov_map && xwin->ov_wmmap &&
+ xwin->ov_visibility != VisibilityFullyObscured) {
+ /* visible */
+ if (xwin->ov_visibility == VisibilityPartiallyObscured) {
+ /* set clips */
+ gst_xwin_set_clips (xwin);
+ }
+
+ if (xwin->ov_conf) {
+ xwin->set_window_func (xwin->private_data,
+ xwin->x, xwin->y,
+ xwin->w, xwin->h,
+ xwin->clips, xwin->num_clips);
+
+ if (!xwin->ov_visible)
+ gst_xwin_set_overlay (xwin, TRUE);
+
+ g_mutex_lock (xwin->main_lock);
+
+ if (xwin->ov_refresh_id)
+ g_source_remove (xwin->ov_refresh_id);
+ xwin->ov_refresh_id =
+ g_timeout_add (200, (GSourceFunc) gst_xwin_refresh,
+ (gpointer) xwin);
+
+ xwin->ov_conf = FALSE;
+
+ g_mutex_unlock (xwin->main_lock);
+ }
+ } else {
+ /* not visible */
+ if (xwin->ov_conf && xwin->ov_visible) {
+ gst_xwin_set_overlay (xwin, FALSE);
+
+ g_mutex_lock (xwin->main_lock);
+
+ if (xwin->ov_refresh_id)
+ g_source_remove (xwin->ov_refresh_id);
+ xwin->ov_refresh_id =
+ g_timeout_add (200, (GSourceFunc) gst_xwin_refresh,
+ (gpointer) xwin);
+
+ xwin->ov_conf = FALSE;
+
+ g_mutex_unlock (xwin->main_lock);
+ }
+ }
+
+ xwin->ov_conf_id = 0;
+
+ /* once is enough */
+ return FALSE;
+}
+
+static void
+gst_xwin_configure (GstXWindowListener *xwin)
+{
+#if 0
+ /* This part is disabled, because the idle task will be done
+ * in the main thread instead of here. */
+ if (!xwin->ov_conf_id)
+ xwin->ov_conf_id =
+ g_idle_add ((GSourceFunc) gst_rec_xoverlay_window,
+ (gpointer) xwin);
+#endif
+
+ gst_xwin_window ((gpointer) xwin);
+}
+
+static void
+gst_xwin_resize (GstXWindowListener *xwin)
+{
+ Drawable drawable, parent, *kids, root;
+ guint numkids;
+ XWindowAttributes attr;
+
+ XGetWindowAttributes (xwin->display,
+ xwin->xwindow_id, &attr);
+ XMoveResizeWindow (xwin->display, xwin->child,
+ 0, 0, attr.width, attr.height);
+
+ /* set the video window - the first clip is our own window */
+ xwin->x = 0;
+ xwin->y = 0;
+ xwin->w = attr.width;
+ xwin->h = attr.height;
+
+ drawable = xwin->child;
+ while (1) {
+ XQueryTree (xwin->display, drawable,
+ &root, &parent, &kids, &numkids);
+ if (numkids)
+ XFree(kids);
+ drawable = parent;
+ XGetWindowAttributes (xwin->display, drawable, &attr);
+ xwin->x += attr.x;
+ xwin->y += attr.y;
+ if (parent == attr.root)
+ break;
+ }
+
+ xwin->ov_conf = TRUE;
+ xwin->ov_move = TRUE;
+
+ gst_xwin_configure (xwin);
+}
+
+static void
+gst_xwin_init_window (GstXWindowListener *xwin)
+{
+ XWindowAttributes attr;
+
+ /* start values */
+ xwin->ov_conf = TRUE;
+ xwin->ov_map = xwin->ov_wmmap = TRUE;
+ xwin->ov_move = TRUE;
+ xwin->ov_refresh = FALSE;
+ g_mutex_lock (xwin->main_lock);
+ xwin->ov_conf_id = xwin->ov_refresh_id = 0;
+ g_mutex_unlock (xwin->main_lock);
+ xwin->ov_visibility = VisibilityFullyObscured;
+
+ /* start the memory that we'll use */
+ xwin->clips = g_malloc (sizeof (GstXWindowClip) * NUM_CLIPS);
+ xwin->num_clips = 0;
+
+ /* open connection to X server */
+ xwin->display = XOpenDisplay (xwin->display_name);
+
+ /* window */
+ XGetWindowAttributes (xwin->display,
+ xwin->xwindow_id, &attr);
+ xwin->child = XCreateSimpleWindow (xwin->display,
+ xwin->xwindow_id, 0, 0,
+ attr.width, attr.height, 0, 0, 0);
+
+ /* listen to certain X events */
+ XSelectInput (xwin->display, xwin->xwindow_id,
+ StructureNotifyMask);
+ XSelectInput (xwin->display, xwin->child,
+ VisibilityChangeMask | StructureNotifyMask);
+ XSelectInput (xwin->display, DefaultRootWindow (xwin->display),
+ VisibilityChangeMask | StructureNotifyMask |
+ SubstructureNotifyMask);
+
+ /* show */
+ XMapWindow (xwin->display, xwin->child);
+
+ gst_xwin_resize (xwin);
+}
+
+static void
+gst_xwin_exit_window (GstXWindowListener *xwin)
+{
+ /* disable overlay */
+ gst_xwin_set_overlay (xwin, FALSE);
+
+ /* delete idle funcs */
+ if (xwin->ov_conf_id != 0)
+ g_source_remove (xwin->ov_conf_id);
+
+ g_mutex_lock (xwin->main_lock);
+ if (xwin->ov_refresh_id != 0)
+ g_source_remove (xwin->ov_refresh_id);
+ g_mutex_unlock (xwin->main_lock);
+
+ /* get away from X and free mem */
+ XDestroyWindow (xwin->display, xwin->child);
+ XCloseDisplay (xwin->display);
+ g_free (xwin->clips);
+}
+
+static gpointer
+gst_xwin_thread (gpointer data)
+{
+ GstXWindowListener *xwin = GST_X_WINDOW_LISTENER (data);
+ XEvent event;
+
+ /* Hi, I'm GStreamer. What's your name? */
+ gst_xwin_init_window (xwin);
+
+ while (xwin->cycle) {
+ XNextEvent (xwin->display, &event);
+
+ if (!xwin->cycle)
+ break;
+
+ if ((event.type == ConfigureNotify &&
+ event.xconfigure.window == xwin->xwindow_id) ||
+ (event.type == MapNotify &&
+ event.xmap.window == xwin->xwindow_id) ||
+ (event.type == UnmapNotify &&
+ event.xunmap.window == xwin->xwindow_id)) {
+ /* the 'parent' window, i.e. the widget provided by client */
+ switch (event.type) {
+ case MapNotify:
+ xwin->ov_map = TRUE;
+ xwin->ov_conf = TRUE;
+ gst_xwin_configure (xwin);
+ break;
+
+ case UnmapNotify:
+ xwin->ov_map = FALSE;
+ xwin->ov_conf = TRUE;
+ gst_xwin_configure (xwin);
+ break;
+
+ case ConfigureNotify:
+ gst_xwin_resize (xwin);
+ break;
+
+ default:
+ /* nothing */
+ break;
+ }
+ } else if (event.xany.window == xwin->child) {
+ /* our own private window */
+ switch (event.type) {
+ case Expose:
+ if (!event.xexpose.count) {
+ if (xwin->ov_refresh) {
+ xwin->ov_refresh = FALSE;
+ } else {
+ xwin->ov_conf = TRUE;
+ gst_xwin_configure (xwin);
+ }
+ }
+ break;
+
+ case VisibilityNotify:
+ xwin->ov_visibility = event.xvisibility.state;
+ if (xwin->ov_refresh) {
+ if (event.xvisibility.state != VisibilityFullyObscured)
+ xwin->ov_refresh = FALSE;
+ } else {
+ xwin->ov_conf = TRUE;
+ gst_xwin_configure (xwin);
+ }
+ break;
+
+ default:
+ /* nothing */
+ break;
+ }
+ } else {
+ /* root window */
+ switch (event.type) {
+ case MapNotify:
+ case UnmapNotify:
+ /* are we still visible? */
+ if (!xwin->ov_refresh) {
+ XWindowAttributes attr;
+ gboolean on;
+ XGetWindowAttributes (xwin->display,
+ xwin->xwindow_id, &attr);
+ on = (attr.map_state == IsViewable);
+ xwin->ov_wmmap = on;
+ xwin->ov_conf = TRUE;
+ gst_xwin_configure (xwin);
+ }
+ break;
+
+ case ConfigureNotify:
+ if (!xwin->ov_refresh) {
+ gst_xwin_resize (xwin);
+ }
+ break;
+
+ default:
+ /* nothing */
+ break;
+ }
+ }
+ }
+
+ /* Nice to have met you, see you later */
+ gst_xwin_exit_window (xwin);
+
+ g_thread_exit (NULL);
+
+ return NULL;
+}
+
+static void
+gst_xwin_start (GstXWindowListener *xwin)
+{
+ DEBUG ("Starting XWindow listener");
+
+ xwin->cycle = TRUE;
+ /* we use this main_display for two things: first of all,
+ * the window needs to be 'refreshed' to remove artifacts
+ * after every move. Secondly, we use this to 'unhang' the
+ * event handler after we've stopped it */
+ xwin->main_lock = g_mutex_new ();
+ xwin->main_display = XOpenDisplay (xwin->display_name);
+ xwin->thread = g_thread_create (gst_xwin_thread,
+ (gpointer) xwin,
+ TRUE, NULL);
+
+ DEBUG ("Started X-overlay");
+}
+
+static void
+gst_xwin_stop (GstXWindowListener *xwin)
+{
+ DEBUG ("Stopping XWindow listener");
+
+ xwin->cycle = FALSE;
+ /* now, the event loop will hang. To prevent this from hanging
+ * our app, app, we re-do our refresh hack. Oh man, this is
+ * ugly. But it works. :). */
+ g_mutex_lock (xwin->main_lock);
+ if (xwin->ov_refresh_id)
+ g_source_remove (xwin->ov_refresh_id);
+ g_mutex_unlock (xwin->main_lock);
+
+ gst_xwin_refresh ((gpointer) xwin);
+ g_thread_join (xwin->thread);
+ XCloseDisplay (xwin->main_display);
+ g_mutex_free (xwin->main_lock);
+
+ DEBUG ("Stopped X-overlay");
+}
+
+/*
+ * End of code inspired by XawTV.
+ */
+
+static gboolean
+plugin_init (GModule *module,
+ GstPlugin *plugin)
+{
+ gst_plugin_set_longname (plugin,
+ "X11-based XWindow event/motion listener");
+ return TRUE;
+}
+
+GstPluginDesc plugin_desc = {
+ GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "xwindowlistener",
+ plugin_init
+};
diff --git a/gst-libs/gst/xwindowlistener/xwindowlistener.h b/gst-libs/gst/xwindowlistener/xwindowlistener.h
new file mode 100644
index 00000000..834be67c
--- /dev/null
+++ b/gst-libs/gst/xwindowlistener/xwindowlistener.h
@@ -0,0 +1,116 @@
+/* G-Streamer X11 Window event/motion listener
+ * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
+ *
+ * xwindowlistener.h: object definition
+ *
+ * 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.
+ */
+
+#ifndef __X_WINDOW_LISTENER_H__
+#define __X_WINDOW_LISTENER_H__
+
+#include <gst/gst.h>
+#include <X11/Xlib.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_X_WINDOW_LISTENER \
+ (gst_x_window_listener_get_type())
+#define GST_X_WINDOW_LISTENER(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_X_WINDOW_LISTENER, \
+ GstXWindowListener))
+#define GST_X_WINDOW_LISTENER_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_X_WINDOW_LISTENER, \
+ GstXWindowListenerClass))
+#define GST_IS_X_WINDOW_LISTENER(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_X_WINDOW_LISTENER))
+#define GST_IS_X_WINDOW_LISTENER_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_X_WINDOW_LISTENER))
+
+typedef struct _GstXWindowListener GstXWindowListener;
+typedef struct _GstXWindowListenerClass GstXWindowListenerClass;
+typedef struct _GstXWindowClip GstXWindowClip;
+typedef void (* MapWindowFunc) (gpointer your_data,
+ gboolean visible);
+typedef void (* SetWindowFunc) (gpointer your_data,
+ gint x, gint y,
+ gint w, gint h,
+ GstXWindowClip *clips,
+ gint num_clips);
+
+struct _GstXWindowClip {
+ gint32 x_offset,
+ y_offset,
+ width,
+ height;
+ gpointer data;
+};
+
+struct _GstXWindowListener {
+ GObject parent;
+
+ /* "per-instance virtual functions" */
+ MapWindowFunc map_window_func;
+ SetWindowFunc set_window_func;
+
+ /* private data with which we call the virtual functions */
+ gpointer private_data;
+
+ /* general information of what we're doing */
+ gchar *display_name;
+ XID xwindow_id;
+
+ /* one extra... */
+ Display *main_display;
+ GMutex *main_lock;
+
+ /* oh my g*d, this is going to be so horribly ugly */
+ GThread *thread;
+ gboolean cycle;
+
+ /* the overlay window + own thread */
+ Display *display;
+ Drawable child;
+ gboolean ov_conf,
+ ov_map,
+ ov_visible,
+ ov_refresh,
+ ov_move,
+ ov_wmmap;
+ gint ov_visibility;
+ guint ov_conf_id,
+ ov_refresh_id;
+ gint x, y, w, h;
+ GstXWindowClip *clips;
+ gint num_clips;
+};
+
+struct _GstXWindowListenerClass {
+ GObjectClass parent;
+};
+
+GType gst_x_window_listener_get_type (void);
+GstXWindowListener *
+ gst_x_window_listener_new (gchar *display,
+ MapWindowFunc map_window_func,
+ SetWindowFunc set_window_func,
+ gpointer private_data);
+void gst_x_window_listener_set_xid (GstXWindowListener *xwin,
+ XID id);
+
+G_END_DECLS
+
+#endif /* __X_WINDOW_LISTENER_H__ */