From: Julien Isorce <j.isorce@samsung.com>
Date: Sun, 1 Mar 2015 19:57:23 +0000 (+0000)
Subject: gl/cocoa: register only one custom nsapp loop
X-Git-Tag: 1.16.2~955^2~1029
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=befc24469cafd9847f43ab98f6e43ac98411e68d;p=platform%2Fupstream%2Fgst-plugins-base.git

gl/cocoa: register only one custom nsapp loop

Otherwise the pipeline stalls when running
more than one glimagesink with gst-launch.

Also only register the custom nsapp loop
when setting up the nsapp from gstgl.
---

diff --git a/gst-libs/gst/gl/cocoa/gstgl_cocoa_private.h b/gst-libs/gst/gl/cocoa/gstgl_cocoa_private.h
index ae7abc8..0ccadc8 100644
--- a/gst-libs/gst/gl/cocoa/gstgl_cocoa_private.h
+++ b/gst-libs/gst/gl/cocoa/gstgl_cocoa_private.h
@@ -38,8 +38,6 @@ struct _GstGLContextCocoaPrivate
   CGLContextObj external_gl_context;
 
   GstGLAPI context_api;
-
-  gint source_id;
 };
 
 
diff --git a/gst-libs/gst/gl/cocoa/gstglcontext_cocoa.m b/gst-libs/gst/gl/cocoa/gstglcontext_cocoa.m
index 659c42c..fd8891e 100644
--- a/gst-libs/gst/gl/cocoa/gstglcontext_cocoa.m
+++ b/gst-libs/gst/gl/cocoa/gstglcontext_cocoa.m
@@ -50,8 +50,12 @@ G_DEFINE_TYPE_WITH_CODE (GstGLContextCocoa, gst_gl_context_cocoa,
  */
 #ifndef GSTREAMER_GLIB_COCOA_NSAPPLICATION
 
+static gboolean gst_gl_window_cocoa_nsapp_iteration (gpointer data);
+
 static GMutex nsapp_lock;
 static GCond nsapp_cond;
+static gint nsapp_count = 0;
+static gint nsapp_source_id = 0;
 
 static gboolean
 gst_gl_window_cocoa_init_nsapp (gpointer data)
@@ -72,9 +76,13 @@ gst_gl_window_cocoa_init_nsapp (gpointer data)
    */
 
   /* has to be called in the main thread */
-  [NSApplication sharedApplication];
+  if ([NSThread isMainThread]) {
+    [NSApplication sharedApplication];
 
-  GST_DEBUG ("NSApp initialized from a GTimeoutSource");
+    GST_DEBUG ("NSApp initialized from a GTimeoutSource");
+
+    nsapp_source_id = g_timeout_add (60, gst_gl_window_cocoa_nsapp_iteration, NULL);
+  }
 
   [pool release];
 
@@ -106,6 +114,23 @@ gst_gl_window_cocoa_nsapp_iteration (gpointer data)
   return TRUE;
 }
 
+static void
+gst_gl_context_cocoa_check_nsapp_loop (gboolean activate)
+{
+  g_mutex_lock (&nsapp_lock);
+
+  if (activate) ++nsapp_count;
+  else --nsapp_count;
+
+  if (nsapp_count == 0) {
+    if (nsapp_source_id)
+      g_source_remove (nsapp_source_id);
+    nsapp_source_id = 0;
+  }
+
+  g_mutex_unlock (&nsapp_lock);
+}
+
 static gpointer
 gst_gl_context_cocoa_setup_nsapp (gpointer data)
 {
@@ -314,7 +339,7 @@ gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
 #ifndef GSTREAMER_GLIB_COCOA_NSAPPLICATION
   static GOnce once = G_ONCE_INIT;
   g_once (&once, gst_gl_context_cocoa_setup_nsapp, context);
-  priv->source_id = g_timeout_add (60, gst_gl_window_cocoa_nsapp_iteration, NULL);
+  gst_gl_context_cocoa_check_nsapp_loop (TRUE);
 #endif
 
   priv->gl_context = nil;
@@ -353,8 +378,7 @@ gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
 
   if (!context_cocoa->priv->gl_context) {
 #ifndef GSTREAMER_GLIB_COCOA_NSAPPLICATION
-    g_source_remove (priv->source_id);
-    priv->source_id = 0;
+    gst_gl_context_cocoa_check_nsapp_loop (FALSE);
 #endif
     goto error;
   }
@@ -382,14 +406,10 @@ error:
 static void
 gst_gl_context_cocoa_destroy_context (GstGLContext *context)
 {
-  GstGLContextCocoa *context_cocoa = GST_GL_CONTEXT_COCOA (context);
-  GstGLContextCocoaPrivate *priv = context_cocoa->priv;
-
   /* FIXME: Need to release context and other things? */
-  if (priv->source_id) {
-    g_source_remove (priv->source_id);
-    priv->source_id = 0;
-  }
+#ifndef GSTREAMER_GLIB_COCOA_NSAPPLICATION
+  gst_gl_context_cocoa_check_nsapp_loop (FALSE);
+#endif
 }
 
 static guintptr