examples/seeking/seek.c: Updated seek example.

Original commit message from CVS:
* examples/seeking/seek.c: (make_vorbis_theora_pipeline),
(query_rates), (query_positions_elems), (query_positions_pads),
(do_seek), (seek_cb), (stop_seek):
Updated seek example.

* gst/playback/gstdecodebin.c: (remove_element_chain), (unlinked):
* gst/playback/gstplaybasebin.c: (queue_threshold_reached),
(queue_out_of_data), (gen_preroll_element), (new_decoded_pad):
* gst/playback/gstplaybin.c: (add_sink):
* gst/playback/gststreaminfo.c: (gst_stream_info_dispose),
(gst_stream_info_set_mute):
Some refcount leak fixes.

ChangeLog

@@ -1,3 +1,18 @@
+2005-07-18  Wim Taymans  <wim@fluendo.com>
+
+	* examples/seeking/seek.c: (make_vorbis_theora_pipeline),
+	(query_rates), (query_positions_elems), (query_positions_pads),
+	(do_seek), (seek_cb), (stop_seek):
+	Updated seek example. 
+
+	* gst/playback/gstdecodebin.c: (remove_element_chain), (unlinked):
+	* gst/playback/gstplaybasebin.c: (queue_threshold_reached),
+	(queue_out_of_data), (gen_preroll_element), (new_decoded_pad):
+	* gst/playback/gstplaybin.c: (add_sink):
+	* gst/playback/gststreaminfo.c: (gst_stream_info_dispose),
+	(gst_stream_info_set_mute):
+	Some refcount leak fixes.
+
 2005-07-16  Wim Taymans  <wim@fluendo.com>
 
 	* gst-libs/gst/audio/gstbaseaudiosink.c:

examples/seeking/seek.c

@@ -1005,7 +1005,9 @@ do_seek (GtkWidget * widget)
 static void
 seek_cb (GtkWidget * widget)
 {
-#ifdef SCRUB
+#ifndef SCRUB
+  GTimeVal timeval;
+#else
   /* If the timer hasn't expired yet, then the pipeline is running */
   if (seek_timeout_id != 0) {
     gst_element_set_state (pipeline, GST_STATE_PAUSED);
@@ -1014,6 +1016,12 @@ seek_cb (GtkWidget * widget)
 
   do_seek (widget);
 
+#ifndef SCRUB
+  /* wait for preroll */
+  GST_TIME_TO_TIMEVAL (50 * GST_MSECOND, timeval);
+  gst_element_get_state (pipeline, NULL, NULL, &timeval);
+#endif
+
 #ifdef SCRUB
   gst_element_set_state (pipeline, GST_STATE_PLAYING);
 
@@ -1047,8 +1055,9 @@ stop_seek (GtkWidget * widget, gpointer user_data)
     gtk_timeout_remove (seek_timeout_id);
     seek_timeout_id = 0;
     /* Still scrubbing, so the pipeline is already playing */
-  } else
+  } else {
     gst_element_set_state (pipeline, GST_STATE_PLAYING);
+  }
 
   update_id =
       gtk_timeout_add (UPDATE_INTERVAL, (GtkFunction) update_scale, pipeline);

gst/playback/gstdecodebin.c

@@ -741,10 +741,11 @@ remove_element_chain (GstDecodeBin * decode_bin, GstPad * pad)
         GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (peer));
 
     {
-      GstElement *parent = gst_pad_get_parent (peer);
+      GstObject *parent = gst_pad_get_parent (peer);
 
       if (parent) {
-        if (parent != GST_ELEMENT (decode_bin)) {
+        if (GST_IS_ELEMENT (parent)) {
+          if (parent != GST_OBJECT (decode_bin)) {
             GST_DEBUG_OBJECT (decode_bin, "dead end pad %s:%s",
                 GST_DEBUG_PAD_NAME (peer));
           } else {
@@ -752,6 +753,7 @@ remove_element_chain (GstDecodeBin * decode_bin, GstPad * pad)
                 GST_ELEMENT_NAME (elem), GST_DEBUG_PAD_NAME (pad));
             remove_element_chain (decode_bin, peer);
           }
+        }
         gst_object_unref (parent);
       }
     }
@@ -834,8 +836,8 @@ unlinked (GstPad * pad, GstPad * peerpad, GstDecodeBin * decode_bin)
   /* inactivate pad */
   gst_pad_set_active (pad, GST_ACTIVATE_NONE);
 
-  element = gst_pad_get_parent (pad);
+  element = gst_pad_get_parent_element (pad);
-  peer = gst_pad_get_parent (peerpad);
+  peer = gst_pad_get_parent_element (peerpad);
 
   if (!is_our_kid (peer, decode_bin))
     goto exit;

gst/playback/gstplaybasebin.c

@@ -499,7 +499,7 @@ queue_threshold_reached (GstElement * queue, GstPlayBaseBin * play_base_bin)
     g_object_set_data (G_OBJECT (queue), "probe", NULL);
     gst_pad_remove_buffer_probe (sinkpad, G_CALLBACK (check_queue), queue);
 
-    g_object_unref (G_OBJECT (sinkpad));
+    gst_object_unref (sinkpad);
   }
 }
 
@@ -524,7 +524,7 @@ queue_out_of_data (GstElement * queue, GstPlayBaseBin * play_base_bin)
     GST_DEBUG_OBJECT (play_base_bin,
         "Re-attaching buffering probe to pad %s:%s",
         GST_DEBUG_PAD_NAME (sinkpad), sinkpad);
-    g_object_unref (G_OBJECT (sinkpad));
+    gst_object_unref (sinkpad);
 
     fill_buffer (play_base_bin, 0);
   }
@@ -596,7 +596,7 @@ gen_preroll_element (GstPlayBaseBin * play_base_bin,
     gst_pad_add_buffer_probe (sinkpad, G_CALLBACK (check_queue), preroll);
     GST_DEBUG_OBJECT (play_base_bin, "Attaching probe to pad %s:%s (%p)",
         GST_DEBUG_PAD_NAME (sinkpad), sinkpad);
-    g_object_unref (G_OBJECT (sinkpad));
+    gst_object_unref (sinkpad);
     g_object_set_data (G_OBJECT (preroll), "pbb", play_base_bin);
     g_object_set_data (G_OBJECT (preroll), "probe", (gpointer) 0x1);
 
@@ -956,7 +956,7 @@ new_decoded_pad (GstElement * element, GstPad * pad, gboolean last,
   /* keep a ref to the signal id so that we can disconnect the signal callback */
   g_object_set_data (G_OBJECT (sinkpad), "unlinked_id", GINT_TO_POINTER (sig));
   gst_pad_link (pad, sinkpad);
-  g_object_unref (G_OBJECT (sinkpad));
+  gst_object_unref (sinkpad);
 
   /* add the stream to the list */
   gst_caps_unref (caps);

gst/playback/gstplaybin.c

@@ -717,7 +717,7 @@ add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad)
 {
   GstPad *sinkpad;
   GstPadLinkReturn res;
-  GstElement *parent;
+  GstObject *parent;
 
   gst_bin_add (GST_BIN (play_bin), sink);
 
@@ -726,10 +726,15 @@ add_sink (GstPlayBin * play_bin, GstElement * sink, GstPad * srcpad)
   res = gst_pad_link (srcpad, sinkpad);
   gst_object_unref (sinkpad);
 
+  /* this is only for debugging */
   parent = gst_pad_get_parent (srcpad);
+  if (parent) {
+    if (GST_IS_ELEMENT (parent)) {
       GST_DEBUG ("Adding sink with state %d (parent: %d, peer: %d)\n",
           GST_STATE (sink), GST_STATE (play_bin), GST_STATE (parent));
+    }
     gst_object_unref (parent);
+  }
 
   /* try to link the pad of the sink to the stream */
   if (res < 0) {

gst/playback/gststreaminfo.c

@@ -234,14 +234,16 @@ gst_stream_info_dispose (GObject * object)
   stream_info = GST_STREAM_INFO (object);
 
   if (stream_info->object) {
-    GstElement *parent;
+    GstObject *parent;
 
     parent = gst_pad_get_parent ((GstPad *)
         GST_PAD_CAST (stream_info->object));
     if (parent != NULL) {
+      if (GST_IS_ELEMENT (parent)) {
         g_signal_handlers_disconnect_by_func (parent,
             G_CALLBACK (stream_info_change_state), stream_info);
-      g_object_unref (G_OBJECT (parent));
+      }
+      gst_object_unref (parent);
     }
 
     gst_object_unref (stream_info->object);
@@ -291,7 +293,7 @@ gst_stream_info_set_mute (GstStreamInfo * stream_info, gboolean mute)
   }
 
   if (mute != stream_info->mute) {
-    GstElement *element;
+    GstObject *element;
 
     stream_info->mute = mute;
     //gst_pad_set_active_recursive ((GstPad *)
@@ -300,6 +302,8 @@ gst_stream_info_set_mute (GstStreamInfo * stream_info, gboolean mute)
 
     element = gst_pad_get_parent ((GstPad *)
         GST_PAD_CAST (stream_info->object));
+    if (element) {
+      if (GST_IS_ELEMENT (element)) {
         if (mute) {
           g_signal_connect (element, "state-change",
               G_CALLBACK (stream_info_change_state), stream_info);
@@ -307,7 +311,9 @@ gst_stream_info_set_mute (GstStreamInfo * stream_info, gboolean mute)
           g_signal_handlers_disconnect_by_func (element,
               G_CALLBACK (stream_info_change_state), stream_info);
         }
-    g_object_unref (G_OBJECT (element));
+      }
+      gst_object_unref (element);
+    }
   }
   return TRUE;
 }

tests/examples/seek/seek.c

@@ -1005,7 +1005,9 @@ do_seek (GtkWidget * widget)
 static void
 seek_cb (GtkWidget * widget)
 {
-#ifdef SCRUB
+#ifndef SCRUB
+  GTimeVal timeval;
+#else
   /* If the timer hasn't expired yet, then the pipeline is running */
   if (seek_timeout_id != 0) {
     gst_element_set_state (pipeline, GST_STATE_PAUSED);
@@ -1014,6 +1016,12 @@ seek_cb (GtkWidget * widget)
 
   do_seek (widget);
 
+#ifndef SCRUB
+  /* wait for preroll */
+  GST_TIME_TO_TIMEVAL (50 * GST_MSECOND, timeval);
+  gst_element_get_state (pipeline, NULL, NULL, &timeval);
+#endif
+
 #ifdef SCRUB
   gst_element_set_state (pipeline, GST_STATE_PLAYING);
 
@@ -1047,8 +1055,9 @@ stop_seek (GtkWidget * widget, gpointer user_data)
     gtk_timeout_remove (seek_timeout_id);
     seek_timeout_id = 0;
     /* Still scrubbing, so the pipeline is already playing */
-  } else
+  } else {
     gst_element_set_state (pipeline, GST_STATE_PLAYING);
+  }
 
   update_id =
       gtk_timeout_add (UPDATE_INTERVAL, (GtkFunction) update_scale, pipeline);