From 66d7d4712e16cf74ca3b38c35774589e66624d2f Mon Sep 17 00:00:00 2001
From: Julien Isorce <julien.isorce@collabora.co.uk>
Date: Wed, 6 Nov 2013 21:55:49 +0000
Subject: [PATCH] [831/906] glimagesink: avoid to overload the drawer if
 already drawing

Especially if the application calls gst_video_overlay_expose a lot
---
 gst-libs/gst/gl/gstglwindow.c | 9 +++++++++
 gst-libs/gst/gl/gstglwindow.h | 2 ++
 2 files changed, 11 insertions(+)

diff --git a/gst-libs/gst/gl/gstglwindow.c b/gst-libs/gst/gl/gstglwindow.c
index 8d64e78c5d..2e1775c788 100644
--- a/gst-libs/gst/gl/gstglwindow.c
+++ b/gst-libs/gst/gl/gstglwindow.c
@@ -107,6 +107,8 @@ gst_gl_window_init (GstGLWindow * window)
   g_cond_init (&window->priv->cond_destroy_context);
   window->priv->context_created = FALSE;
 
+  window->is_drawing = FALSE;
+
   g_weak_ref_init (&window->context_ref, NULL);
 }
 
@@ -221,6 +223,13 @@ gst_gl_window_draw (GstGLWindow * window, guint width, guint height)
   g_return_if_fail (window_class->draw != NULL);
 
   GST_GL_WINDOW_LOCK (window);
+
+  /* avoid to overload the drawer */
+  if (window->is_drawing) {
+    GST_GL_WINDOW_UNLOCK (window);
+    return;
+  }
+
   window_class->draw (window, width, height);
   GST_GL_WINDOW_UNLOCK (window);
 }
diff --git a/gst-libs/gst/gl/gstglwindow.h b/gst-libs/gst/gl/gstglwindow.h
index ba2f1036e7..4a03fc8293 100644
--- a/gst-libs/gst/gl/gstglwindow.h
+++ b/gst-libs/gst/gl/gstglwindow.h
@@ -76,6 +76,8 @@ struct _GstGLWindow {
 
   guintptr      external_gl_context;
 
+  gboolean      is_drawing;
+
   GstGLWindowCB         draw;
   gpointer              draw_data;
   GDestroyNotify        draw_notify;