diff options
Diffstat (limited to 'gst-libs/gst/xwindowlistener/xwindowlistener.c')
| -rw-r--r-- | gst-libs/gst/xwindowlistener/xwindowlistener.c | 625 |
1 files changed, 0 insertions, 625 deletions
diff --git a/gst-libs/gst/xwindowlistener/xwindowlistener.c b/gst-libs/gst/xwindowlistener/xwindowlistener.c deleted file mode 100644 index ebbc9ac6..00000000 --- a/gst-libs/gst/xwindowlistener/xwindowlistener.c +++ /dev/null @@ -1,625 +0,0 @@ -/* 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); - xwin->display_name = NULL; - } - - 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 - * - * This code originates largely from xawtv. By permission of Gerd Knorr - * <kraxel@bytesex.org>, it was relicensed to LGPL. - */ - -#define DEBUG(...) \ - GST_DEBUG ("XWL: " __VA_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; - XErrorHandler 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 (GstPlugin * plugin) -{ - return TRUE; -} - -GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, - GST_VERSION_MINOR, - "xwindowlistener", - "X11-based XWindow event/motion listener", - plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN) |