[gstreamermm] wrapped {query|event} functions

[Marcin Kolny <mkolny src gnome org>]

commit 4bcdb15ebd73aed9a2b046c7253e56bd0a7b993b
Author: Marcin Kolny at Flytronic.pl <marcin kolny flytronic pl>
Date:   Fri Oct 4 11:02:04 2013 +0200

    wrapped {query|event} functions

 gstreamer/src/pad.ccg |   58 +++++++++++++++++++++++++++++++++++++++++++++++++
 gstreamer/src/pad.hg  |   10 ++++++++
 2 files changed, 68 insertions(+), 0 deletions(-)
---
diff --git a/gstreamer/src/pad.ccg b/gstreamer/src/pad.ccg
index 6d57f0d..0ada720 100644
--- a/gstreamer/src/pad.ccg
+++ b/gstreamer/src/pad.ccg
@@ -193,12 +193,70 @@ GstFlowReturn Pad_Chain_gstreamermm_callback(GstPad* pad, GstObject* parent, Gst
   return GST_FLOW_ERROR;
 }
 
+gboolean Pad_Query_gstreamermm_callback(GstPad* pad, GstObject* parent, GstQuery* query)
+{
+  Gst::Pad *pad_wrapper = dynamic_cast<Gst::Pad*>
+    (static_cast<Glib::ObjectBase*>(
+      Glib::ObjectBase::_get_current_wrapper((GObject*)pad)
+      )
+    );
+  g_assert(pad);
+
+  try
+  {
+    Glib::RefPtr<Query> query_wrapped = Glib::wrap(query, false);
+
+    return pad_wrapper->slot_query(Glib::wrap(pad, true), query_wrapped);
+  }
+  catch(...)
+  {
+    Glib::exception_handlers_invoke();
+  }
+
+  return false;
+}
+
+gboolean Pad_Event_gstreamermm_callback(GstPad* pad, GstObject* parent, GstEvent* event)
+{
+  Gst::Pad *pad_wrapper = dynamic_cast<Gst::Pad*>
+    (static_cast<Glib::ObjectBase*>(
+      Glib::ObjectBase::_get_current_wrapper((GObject*)pad)
+      )
+    );
+  g_assert(pad);
+
+  try
+  {
+    Glib::RefPtr<Event> event_wrapped = Glib::wrap(event, false);
+
+    return pad_wrapper->slot_event(Glib::wrap(pad, true), event_wrapped);
+  }
+  catch(...)
+  {
+    Glib::exception_handlers_invoke();
+  }
+
+  return false;
+}
+
 void Pad::set_chain_function(const SlotChain& slot)
 {
   slot_chain = slot;
   gst_pad_set_chain_function(GST_PAD(gobj()), &Pad_Chain_gstreamermm_callback);
 }
 
+void Pad::set_query_function(const SlotQuery& slot)
+{
+       slot_query = slot;
+       gst_pad_set_query_function(GST_PAD(gobj()), &Pad_Query_gstreamermm_callback);
+}
+
+void Pad::set_event_function(const SlotEvent& slot)
+{
+       slot_event = slot;
+       gst_pad_set_event_function(GST_PAD(gobj()), &Pad_Event_gstreamermm_callback);
+}
+
 bool Pad::is_ghost_pad() const
 {
        return GST_IS_GHOST_PAD(gobj());
diff --git a/gstreamer/src/pad.hg b/gstreamer/src/pad.hg
index 94342ca..cb7e566 100644
--- a/gstreamer/src/pad.hg
+++ b/gstreamer/src/pad.hg
@@ -122,6 +122,10 @@ public:
 
   typedef sigc::slot< Gst::FlowReturn, const Glib::RefPtr<Gst::Pad>&, Glib::RefPtr<Gst::Buffer>& > SlotChain;
 
+  typedef sigc::slot< gboolean, const Glib::RefPtr<Gst::Pad>&, Glib::RefPtr<Gst::Event>& > SlotEvent;
+
+  typedef sigc::slot< gboolean, const Glib::RefPtr<Gst::Pad>&, Glib::RefPtr<Gst::Query>& > SlotQuery;
+
   /** Creates a new pad with the given name in the given direction.
    *
    * @param name The name of the new pad.
@@ -379,6 +383,10 @@ public:
 
   friend GstFlowReturn Pad_Chain_gstreamermm_callback(GstPad* pad, GstObject* parent, GstBuffer *buffer);
   void set_chain_function(const SlotChain& slot);
+  friend gboolean Pad_Event_gstreamermm_callback(GstPad* pad, GstObject* parent, GstEvent* event);
+  void set_event_function(const SlotEvent& slot);
+  friend gboolean Pad_Query_gstreamermm_callback(GstPad* pad, GstObject* parent, GstQuery* query);
+  void set_query_function(const SlotQuery& slot);
 
     //C API specific pad callback setting functions are ignored.
     _IGNORE(
@@ -429,6 +437,8 @@ public:
 
 private:
   SlotChain slot_chain;
+  SlotEvent slot_event;
+  SlotQuery slot_query;
 };
 
 class PadProbeInfo