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

configure.ac

@@ -615,7 +615,7 @@ AC_ARG_ENABLE([glx],
      esac],[NEED_GLX=auto])
 
 AC_ARG_ENABLE([cocoa],
-     [  --enable-cocoa          Enable Cocoa support (using GNUstep on non OS X platforms) @<:@default=auto@:>@],
+     [  --enable-cocoa          Enable Cocoa support @<:@default=auto@:>@],
      [case "${enableval}" in
        yes)  NEED_COCOA=yes ;;
        no)   NEED_COCOA=no ;;
@@ -657,7 +657,6 @@ save_LIBS="$LIBS"
 HAVE_GL=no
 HAVE_GLES2=no
 HAVE_GLU=no
-HAVE_GNUSTEP_COCOA=no
 HAVE_WAYLAND_EGL=no
 
 HAVE_EGL_RPI=no
@@ -754,35 +753,6 @@ case $host in
   ;;
 esac
 
-case $host in
-  *-darwin* ) ;;
-  *)
-    AC_PATH_PROG([GNUSTEP_CONFIG],[gnustep-config])
-    if test "x$GNUSTEP_CONFIG" != "x"; then
-      GNUSTEP_HOST="`$GNUSTEP_CONFIG --variable=GNUSTEP_HOST`"
-      case $host in
-        *-mingw* )
-          case $GNUSTEP_HOST in
-            *-mingw* )
-              HAVE_GNUSTEP_COCOA=yes
-            ;;
-          esac
-          ;;
-        * )
-          HAVE_GNUSTEP_COCOA=yes
-        ;;
-      esac
-    fi
-  ;;
-esac
-
-AC_MSG_CHECKING([for GNUstep])
-if test "x$HAVE_GNUSTEP_COCOA" = "xyes" ; then
-  AC_MSG_RESULT([yes])
-else
-  AC_MSG_RESULT([no])
-fi
-
 CPPFLAGS="$save_CPPFLAGS"
 LIBS="$save_LIBS"
 
@@ -1015,19 +985,6 @@ case $host in
         fi
       fi
     fi
-
-    dnl GNUstep provides the Cocoa API on unix
-    if test "x$NEED_COCOA" != "xno"; then
-      if test "x$HAVE_GNUSTEP_COCOA" = "xyes" ; then
-        GNUSTEP_OBJCFLAGS="`$GNUSTEP_CONFIG --objc-flags`"
-        GNUSTEP_LIBS="`$GNUSTEP_CONFIG --gui-libs`"
-        GL_LIBS="$GL_LIBS $GNUSTEP_LIBS -lgnustep-gui -lgnustep-base"
-        GL_OBJCFLAGS="$GL_OBJCFLAGS $GNUSTEP_OBJCFLAGS"
-
-        USE_COCOA=yes
-        HAVE_WINDOW_COCOA=yes
-      fi
-    fi
     ;;
   *-darwin*)
     if test "x$HAVE_IOS" = "xyes"; then
@@ -1120,17 +1077,6 @@ case $host in
         fi
       fi
     fi
-
-    dnl GNUstep provides the Cocoa API on win32
-    if test "x$HAVE_GNUSTEP_COCOA" = "xyes" ; then
-      GNUSTEP_CFLAGS="`$GNUSTEP_CONFIG --objc-flags`"
-      GNUSTEP_LIBS="`$GNUSTEP_CONFIG --gui-libs`"
-      GL_LIBS="$GL_LIBS $GNUSTEP_LIBS -lgnustep-gui -lgnustep-base"
-      GL_OBJCFLAGS="$OBJCFLAGS $GNUSTEP_CFLAGS"
-
-      USE_COCOA=yes
-      HAVE_WINDOW_COCOA=yes
-    fi
     ;;
   *)
     AC_MSG_WARN([Don't know how to check for OpenGL on your platform.])

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;
 }