glwindow: remove is_running() function

It isn't necessary in correctly written programs.

ext/gl/gstglimagesink.c

@@ -2326,15 +2326,14 @@ static gboolean
 gst_glimage_sink_redisplay (GstGLImageSink * gl_sink)
 {
   GstGLWindow *window;
-  gboolean alive;
   GstBuffer *old_stored_buffer[2], *old_sync;
+  gulong handler_id;
 
   window = gst_gl_context_get_window (gl_sink->context);
   if (!window)
     return FALSE;
 
-  if (gst_gl_window_is_running (window)) {
-    gulong handler_id =
+  handler_id =
       g_signal_handler_find (GST_ELEMENT_PARENT (gl_sink), G_SIGNAL_MATCH_ID,
       gst_gl_image_sink_bin_signals[SIGNAL_BIN_CLIENT_DRAW], 0,
       NULL, NULL, NULL);
@@ -2406,9 +2405,7 @@ gst_glimage_sink_redisplay (GstGLImageSink * gl_sink)
    * It means that it does not wait for stuff to be executed in other threads
    */
   gst_gl_window_draw (window);
-  }
-  alive = gst_gl_window_is_running (window);
   gst_object_unref (window);
 
-  return alive;
+  return TRUE;
 }

gst-libs/gst/gl/cocoa/gstglwindow_cocoa.m

@@ -329,15 +329,13 @@ gst_gl_cocoa_draw_cb (GstGLWindowCocoa *window_cocoa)
   GstGLWindowCocoaPrivate *priv = window_cocoa->priv;
   GstGLWindow *window = GST_GL_WINDOW (window_cocoa);
 
-  if (gst_gl_window_is_running (window)) {
-    if (![priv->internal_win_id isClosed]) {
+  if (window_cocoa->priv->internal_win_id && ![priv->internal_win_id isClosed]) {
    GstGLWindow *window = GST_GL_WINDOW (window_cocoa);
 
     /* draw opengl scene in the back buffer */
     if (window->draw)
       window->draw (window->draw_data);
   }
-  }
 }
 
 static void
@@ -348,7 +346,7 @@ gst_gl_cocoa_resize_cb (GstGLNSView * view, guint width, guint height)
   GstGLWindow *window = GST_GL_WINDOW (window_cocoa);
   GstGLContext *context = gst_gl_window_get_context (window);
 
-  if (gst_gl_window_is_running (window) && ![window_cocoa->priv->internal_win_id isClosed]) {
+  if (window_cocoa->priv->internal_win_id && ![window_cocoa->priv->internal_win_id isClosed]) {
     const GstGLFuncs *gl;
     NSRect bounds = [view bounds];
     NSRect visibleRect = [view visibleRect];

gst-libs/gst/gl/gstglcontext.c

@@ -897,12 +897,8 @@ gst_gl_context_set_window (GstGLContext * context, GstGLWindow * window)
   if (context->priv->alive)
     return FALSE;
 
-  if (window) {
-    if (gst_gl_window_is_running (window))
-      return FALSE;
-
+  if (window)
     g_weak_ref_set (&window->context_ref, context);
-  }
 
   if (context->window)
     gst_object_unref (context->window);

gst-libs/gst/gl/gstglwindow.c

@@ -782,22 +782,6 @@ gst_gl_window_set_close_callback (GstGLWindow * window, GstGLWindowCB callback,
   GST_GL_WINDOW_UNLOCK (window);
 }
 
-/**
- * gst_gl_window_is_running:
- * @window: a #GstGLWindow
- *
- * Whether the runloop is running
- *
- * Since: 1.4
- */
-gboolean
-gst_gl_window_is_running (GstGLWindow * window)
-{
-  GstGLWindowPrivate *priv = window->priv;
-  return priv->alive && (!priv->loop
-      || g_main_loop_is_running (window->priv->loop));
-}
-
 /**
  * gst_gl_window_get_display:
  * @window: a #GstGLWindow

gst-libs/gst/gl/gstglwindow.h

@@ -111,9 +111,10 @@ struct _GstGLWindow {
  * GstGLWindowClass:
  * @parent_class: Parent class
  * @get_display: Gets the current windowing system display connection
- * @set_window_handle: Set a window to render into
- * @get_window_handle: Gets the current window that this #GstGLWindow is
- *                     rendering into
+ * @set_window_handle: Set a window handle to render into
+ * @get_window_handle: Gets the current window handle that this #GstGLWindow is
+ *                     rendering into.  This may return a different value to
+ *                     what is passed into @set_window_handle
  * @draw: redraw the window with the specified dimensions
  * @run: run the mainloop
  * @quit: send a quit to the mainloop
@@ -186,8 +187,6 @@ void     gst_gl_window_run                  (GstGLWindow *window);
 GST_EXPORT
 void     gst_gl_window_quit                 (GstGLWindow *window);
 GST_EXPORT
-gboolean gst_gl_window_is_running           (GstGLWindow *window);
-GST_EXPORT
 void     gst_gl_window_send_message         (GstGLWindow *window,
                                              GstGLWindowCB callback,
                                              gpointer data);

gst-libs/gst/gl/x11/gstglwindow_x11.c

@@ -363,11 +363,10 @@ draw_cb (gpointer data)
 {
   GstGLWindowX11 *window_x11 = data;
   GstGLWindow *window = GST_GL_WINDOW (window_x11);
-
-  if (gst_gl_window_is_running (window)) {
   guint width, height;
   XWindowAttributes attr;
 
+  if (window_x11->internal_win_id) {
     XGetWindowAttributes (window_x11->device, window_x11->internal_win_id,
         &attr);
     GST_TRACE_OBJECT (window, "window size %ux%u", attr.width, attr.height);