Add support to exit when 'Esc' key is pressed.

Original commit message from CVS:
Add support to exit when 'Esc' key is pressed.

ChangeLog

@@ -1,3 +1,11 @@
+2005-11-03  Edgard Lima <edgard.lima@indt.org.br>
+
+	* ext/sdl/sdlvideosink.c: (SDL_WaitEventTimeout),
+	(gst_sdlvideosink_event_thread), (gst_sdlvideosink_initsdl),
+	(gst_sdlvideosink_change_state), (gst_sdlvideosink_deinitsdl):
+	* ext/sdl/sdlvideosink.h:
+	Add support to exit when 'Esc' key is pressed.
+
 2005-11-02  Julien MOUTTE  <julien@moutte.net>
 
 	* configure.ac: Requires DirectFB 0.9.24

ext/sdl/sdlvideosink.c

@@ -319,6 +319,9 @@ gst_sdlvideosink_init (GstSDLVideoSink * sdlvideosink)
 
   sdlvideosink->init = FALSE;
 
+  sdlvideosink->event_thread = NULL;
+  sdlvideosink->running = FALSE;
+
   sdlvideosink->lock = g_mutex_new ();
 }
 
@@ -402,8 +405,6 @@ gst_sdlvideosink_lock (GstSDLVideoSink * sdlvideosink)
   if (SDL_LockYUVOverlay (sdlvideosink->overlay) < 0)
     goto lock_yuv;
 
-  sdlvideosink->init = TRUE;
-
   return TRUE;
 
   /* ERRORS */
@@ -443,13 +444,83 @@ gst_sdlvideosink_deinitsdl (GstSDLVideoSink * sdlvideosink)
   g_mutex_lock (sdlvideosink->lock);
 
   if (sdlvideosink->init) {
+    sdlvideosink->running = FALSE;
+    if (sdlvideosink->event_thread) {
+      g_thread_join (sdlvideosink->event_thread);
+      sdlvideosink->event_thread = NULL;
+    }
+
     SDL_Quit ();
     sdlvideosink->init = FALSE;
+
   }
 
   g_mutex_unlock (sdlvideosink->lock);
 }
 
+int
+SDL_WaitEventTimeout (SDL_Event * event, Uint32 timeout)
+{
+  Uint32 i;
+  int numevents = 0;
+
+  for (i = 0; i < timeout; i += 10) {
+    SDL_PumpEvents ();
+    /*  numevents = SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS); */
+    numevents =
+        SDL_PeepEvents (event, 1, SDL_GETEVENT,
+        SDL_KEYDOWNMASK | SDL_KEYUPMASK |
+        /* SDL_MOUSEMOTIONMASK | SDL_MOUSEBUTTONDOWNMASK | SDL_MOUSEBUTTONUPMASK | */
+        SDL_QUITMASK);
+    switch (numevents) {
+      case -1:
+        return 0;
+        break;
+      case 0:
+        SDL_Delay (10);
+        break;
+      default:
+        return numevents;
+        break;
+    }
+  }
+
+  return 0;
+}
+
+static gpointer
+gst_sdlvideosink_event_thread (GstSDLVideoSink * sdlvideosink)
+{
+
+  SDL_Event event;
+
+  while (sdlvideosink->running) {
+    if (SDL_WaitEventTimeout (&event, 50)) {
+
+      switch (event.type) {
+        case SDL_KEYDOWN:
+          if (SDLK_ESCAPE != event.key.keysym.sym) {
+            break;
+          } else {
+            /* fall through */
+          }
+        case SDL_QUIT:
+          sdlvideosink->running = FALSE;
+          GST_ELEMENT_ERROR (sdlvideosink, RESOURCE, OPEN_WRITE,
+              ("Video output device is gone."),
+              ("We were running fullscreen and user "
+                  "pressed the ESC key, stopping playback."));
+          break;
+      }
+
+    }
+
+  }
+
+  return NULL;
+
+}
+
 static gboolean
 gst_sdlvideosink_initsdl (GstSDLVideoSink * sdlvideosink)
 {
@@ -472,6 +543,11 @@ gst_sdlvideosink_initsdl (GstSDLVideoSink * sdlvideosink)
 
   sdlvideosink->init = TRUE;
 
+  sdlvideosink->running = TRUE;
+  sdlvideosink->event_thread =
+      g_thread_create ((GThreadFunc) gst_sdlvideosink_event_thread,
+      sdlvideosink, TRUE, NULL);
+
   g_mutex_unlock (sdlvideosink->lock);
 
   return TRUE;

ext/sdl/sdlvideosink.h

@@ -59,7 +59,8 @@ struct _GstSDLVideoSink {
 
   gboolean full_screen;
   gboolean init;
-
+  gboolean running;
+  GThread *event_thread;
   SDL_Surface *screen;
   SDL_Overlay *overlay;
   SDL_Rect rect;