gl/cocoa: Remove GNUStep support

Until gcc and GNUStep properly support Objective-C blocks and other
"new" features of Objective-C we can't properly support them without
making the code much more ugly.

https://bugzilla.gnome.org/show_bug.cgi?id=739152

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

@@ -40,7 +40,6 @@ static GstGLPlatform gst_gl_context_cocoa_get_gl_platform (GstGLContext * contex
 
 G_DEFINE_TYPE (GstGLContextCocoa, gst_gl_context_cocoa, GST_GL_TYPE_CONTEXT);
 
-#ifndef GNUSTEP
 static GMutex nsapp_lock;
 static GCond nsapp_cond;
 
@@ -96,16 +95,12 @@ gst_gl_window_cocoa_nsapp_iteration (gpointer data)
 
   return TRUE;
 }
-#endif
 
 static void
 gst_gl_context_cocoa_class_init (GstGLContextCocoaClass * klass)
 {
   GstGLContextClass *context_class = (GstGLContextClass *) klass;
-
-#ifndef GNUSTEP
   NSAutoreleasePool* pool = nil;
-#endif
 
   g_type_class_add_private (klass, sizeof (GstGLContextCocoaPrivate));
 
@@ -121,7 +116,6 @@ gst_gl_context_cocoa_class_init (GstGLContextCocoaClass * klass)
   context_class->get_gl_platform =
       GST_DEBUG_FUNCPTR (gst_gl_context_cocoa_get_gl_platform);
 
-#ifndef GNUSTEP
   pool = [[NSAutoreleasePool alloc] init];
 
   /* [NSApplication sharedApplication] will usually be
@@ -191,7 +185,6 @@ gst_gl_context_cocoa_class_init (GstGLContextCocoaClass * klass)
   }
 
   [pool release];
-#endif
 }
 
 static void
@@ -219,9 +212,7 @@ gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
   GstGLWindowCocoa *window_cocoa = GST_GL_WINDOW_COCOA (window);
   __block NSOpenGLContext *glContext = nil;
 
-#ifndef GNUSTEP
   priv->source_id = g_timeout_add (200, gst_gl_window_cocoa_nsapp_iteration, NULL);
-#endif
 
   priv->gl_context = nil;
   if (other_context)
@@ -243,9 +234,6 @@ gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
 
     pool = [[NSAutoreleasePool alloc] init];
 
-#ifdef GNUSTEP
-    [NSApplication sharedApplication];
-#endif
     rect.origin.x = 0;
     rect.origin.y = 0;
     rect.size.width = 320;
@@ -265,7 +253,6 @@ gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
 
     [window_handle setContentView:glView];
 
-#ifndef GNUSTEP
     glContext = [[NSOpenGLContext alloc] initWithFormat:fmt
       shareContext:context_cocoa->priv->external_gl_context];
 
@@ -275,10 +262,6 @@ gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
 
     [glContext setView:glView];
 
-#else
-    /* FIXME try to make context sharing work in GNUstep */
-    context_cocoa->priv->gl_context = glContext;
-#endif
     [pool release];
   });
 
@@ -300,11 +283,7 @@ gst_gl_context_cocoa_create_context (GstGLContext *context, GstGLAPI gl_api,
    */
   NS_DURING {
     if (glContext) {
-#ifdef GNUSTEP
-      const long swapInterval = 1;
-#else
       const GLint swapInterval = 1;
-#endif
       [glContext setValues:&swapInterval forParameter:NSOpenGLCPSwapInterval];
     }
   } NS_HANDLER {

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

@@ -257,11 +257,9 @@ draw_cb (gpointer data)
       x += 20;
       y += 20;
 
-#ifndef GNUSTEP
       [priv->internal_win_id setFrame:windowRect display:NO];
       GST_DEBUG ("make the window available\n");
       [priv->internal_win_id makeMainWindow];
-#endif
 
       [priv->internal_win_id orderFrontRegardless];
 
@@ -457,17 +455,6 @@ close_window_cb (gpointer data)
 }
 
 - (void) applicationWillTerminate:(NSNotification *)aNotification {
-#ifdef GNUSTEP
-  /* fixes segfault with gst-launch-1.0 -e ... and sending SIGINT (Ctrl-C)
-   * which causes GNUstep to run a signal handler in the main thread.
-   * However that thread has never been 'registered' with GNUstep so
-   * the autorelease magic of objective-c causes a segfault from accessing
-   * a null NSThread object somewhere deep in GNUstep.
-   *
-   * I put it here because this is the first time we can register the thread.
-   */
-  GSRegisterCurrentThread();
-#endif
 }
 
 @end
@@ -488,9 +475,7 @@ close_window_cb (gpointer data)
 
   window_cocoa = window;
 
-#ifndef GNUSTEP
   [self setWantsLayer:NO];
-#endif
 
   /* Get notified about changes */
   [self setPostsFrameChangedNotifications:YES];

tests/examples/gl/cocoa/cocoa-videooverlay.m

@@ -136,15 +136,8 @@ static void end_stream_cb(GstBus* bus, GstMessage* message, MainWindow* window)
 
 static gpointer thread_func (MainWindow* window)
 {
-#ifdef GNUSTEP
-  GSRegisterCurrentThread();
-#endif
-
   g_main_loop_run ([window loop]);
 
-#ifdef GNUSTEP
-  GSUnregisterCurrentThread();
-#endif
   return NULL;
 }
 
@@ -172,10 +165,6 @@ int main(int argc, char **argv)
   NSAutoreleasePool *pool=nil;
   NSRect rect;
   MainWindow *window=nil;
-  
-#ifdef GNUSTEP
-  GstState state;
-#endif
 
   g_print("app created\n");
 
@@ -203,18 +192,8 @@ int main(int argc, char **argv)
   if (!ok)
     g_warning("could not link videosrc to videosink\n");
 
-#ifdef GNUSTEP
-  gst_element_set_state (pipeline, GST_STATE_PAUSED);
-  state = GST_STATE_PAUSED;
-  gst_element_get_state (pipeline, &state, &state, GST_CLOCK_TIME_NONE);
-  g_print("pipeline paused\n");
-  GSRegisterCurrentThread();
-#endif
-
   pool = [[NSAutoreleasePool alloc] init];
-#ifndef GNUSTEP
   [NSApplication sharedApplication];
-#endif
 
   rect.origin.x = 0; rect.origin.y = 0;
   rect.size.width = width; rect.size.height = height;
@@ -236,7 +215,6 @@ int main(int argc, char **argv)
 
   [window orderFront:window];
 
-#ifndef GNUSTEP
   while (![window isClosed]) {
     NSEvent *event = [NSApp nextEventMatchingMask:NSAnyEventMask
       untilDate:[NSDate dateWithTimeIntervalSinceNow:1]
@@ -244,7 +222,6 @@ int main(int argc, char **argv)
     if (event)
       [NSApp sendEvent:event];
   }
-#endif
 
   g_thread_join (loop_thread);
 
@@ -252,9 +229,5 @@ int main(int argc, char **argv)
 
   [pool release];
 
-#ifdef GNUSTEP
-  GSUnregisterCurrentThread();
-#endif
-
   return 0;
 }