--- a/gstreamer_core/gst/gstpad.h	Wed Mar 31 22:03:18 2010 +0300
+++ b/gstreamer_core/gst/gstpad.h	Tue Aug 31 15:30:33 2010 +0300
@@ -28,6 +28,7 @@
 
 #include <gst/gstobject.h>
 #include <gst/gstbuffer.h>
+#include <gst/gstbufferlist.h>
 #include <gst/gstcaps.h>
 #include <gst/gstevent.h>
 #include <gst/gstquery.h>
@@ -47,6 +48,7 @@
 
 
 typedef struct _GstPad GstPad;
+typedef struct _GstPadPrivate GstPadPrivate;
 typedef struct _GstPadClass GstPadClass;
 
 /**
@@ -158,6 +160,9 @@
  */
 #define GST_FLOW_IS_SUCCESS(ret) ((ret) >= GST_FLOW_OK)
 
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
 G_CONST_RETURN gchar*	gst_flow_get_name	(GstFlowReturn ret);
 #ifdef __SYMBIAN32__
 IMPORT_C
@@ -229,11 +234,31 @@
  * gst_buffer_unref() when the buffer is no longer needed.
  *
  * When a chain function detects an error in the data stream, it must post an
- * error on the buffer and return an appropriate #GstFlowReturn value.
+ * error on the bus and return an appropriate #GstFlowReturn value.
  *
  * Returns: #GST_FLOW_OK for success
  */
 typedef GstFlowReturn		(*GstPadChainFunction)		(GstPad *pad, GstBuffer *buffer);
+
+/**
+ * GstPadChainListFunction:
+ * @pad: the sink #GstPad that performed the chain.
+ * @list: the #GstBufferList that is chained, not %NULL.
+ *
+ * A function that will be called on sinkpads when chaining buffer lists.
+ * The function typically processes the data contained in the buffer list and
+ * either consumes the data or passes it on to the internally linked pad(s).
+ *
+ * The implementer of this function receives a refcount to @list and
+ * should gst_buffer_list_unref() when the list is no longer needed.
+ *
+ * When a chainlist function detects an error in the data stream, it must
+ * post an error on the bus and return an appropriate #GstFlowReturn value.
+ *
+ * Returns: #GST_FLOW_OK for success
+ */
+typedef GstFlowReturn		(*GstPadChainListFunction)	(GstPad *pad, GstBufferList *list);
+
 /**
  * GstPadGetRangeFunction:
  * @pad: the src #GstPad to perform the getrange on.
@@ -312,11 +337,28 @@
  * The signature of the internal pad link function.
  *
  * Returns: a newly allocated #GList of pads that are linked to the given pad on
- *  the inside of the parent element.
- *  The caller must call g_list_free() on it after use.
+ * the inside of the parent element.
+ *
+ * The caller must call g_list_free() on it after use.
+ *
+ * Deprecated: use the threadsafe #GstPadIterIntLinkFunction instead.
  */
 typedef GList*			(*GstPadIntLinkFunction)	(GstPad *pad);
 
+/**
+ * GstPadIterIntLinkFunction:
+ * @pad: The #GstPad to query.
+ *
+ * The signature of the internal pad link iterator function.
+ *
+ * Returns: a new #GstIterator that will iterate over all pads that are
+ * linked to the given pad on the inside of the parent element.
+ *
+ * the caller must call gst_iterator_free() after usage.
+ *
+ * Since 0.10.21
+ */
+typedef GstIterator*           (*GstPadIterIntLinkFunction)    (GstPad *pad);
 
 /* generic query function */
 /**
@@ -424,13 +466,16 @@
  * be processed by @pad. The function is mostly overridden by elements that can
  * provide a hardware buffer in order to avoid additional memcpy operations.
  *
- * The function can return a buffer that does not have @caps, in which case the
- * upstream element requests a format change. If a format change was requested,
- * the returned buffer will be one to hold the data of said new caps, so its
- * size might be different from @size.
+ * The function can return a buffer that has caps different from the requested
+ * @caps, in which case the upstream element requests a format change to this
+ * new caps.
+ * If a format change was requested, the returned buffer will be one to hold
+ * the data of said new caps, so its size might be different from the requested
+ * @size.
  *
  * When this function returns anything else than #GST_FLOW_OK, the buffer allocation
- * failed and @buf does not contain valid data.
+ * failed and @buf does not contain valid data. If the function returns #GST_FLOW_OK and
+ * the @buf is NULL, a #GstBuffer will be created with @caps, @offset and @size.
  *
  * By default this function returns a new buffer of @size and with @caps containing
  * purely malloced data. The buffer should be freed with gst_buffer_unref()
@@ -530,7 +575,7 @@
  * @unlinkfunc: function called when pad is unlinked
  * @peer: the pad this pad is linked to
  * @sched_private: private storage for the scheduler
- * @chainfunc: function to chain data to pad
+ * @chainfunc: function to chain buffer to pad
  * @checkgetrangefunc: function to check if pad can operate in pull mode
  * @getrangefunc: function to get a range of data from a pad
  * @eventfunc: function to send an event to a pad
@@ -541,6 +586,8 @@
  * @bufferallocfunc: function to allocate a buffer for this pad
  * @do_buffer_signals: counter counting installed buffer signals
  * @do_event_signals: counter counting installed event signals
+ * @iterintlinkfunc: get the internal links iterator of this pad
+ * @block_destroy_data: notify function for gst_pad_set_blocked_async_full()
  *
  * The #GstPad structure. Use the functions to update the variables.
  */
@@ -608,8 +655,21 @@
   gint				 do_buffer_signals;
   gint				 do_event_signals;
 
+  /* ABI added */
+  /* iterate internal links */
+  GstPadIterIntLinkFunction     iterintlinkfunc;
+
+  /* free block_data */
+  GDestroyNotify block_destroy_data;
+
   /*< private >*/
-  gpointer _gst_reserved[GST_PADDING];
+  union {
+    struct {
+      gboolean                      block_callback_called;
+      GstPadPrivate                *priv;
+    } ABI;
+    gpointer _gst_reserved[GST_PADDING - 2];
+  } abidata;
 };
 
 struct _GstPadClass {
@@ -646,11 +706,18 @@
 #define GST_PAD_QUERYTYPEFUNC(pad)	(GST_PAD_CAST(pad)->querytypefunc)
 #define GST_PAD_QUERYFUNC(pad)		(GST_PAD_CAST(pad)->queryfunc)
 #define GST_PAD_INTLINKFUNC(pad)	(GST_PAD_CAST(pad)->intlinkfunc)
+#define GST_PAD_ITERINTLINKFUNC(pad)    (GST_PAD_CAST(pad)->iterintlinkfunc)
 
 #define GST_PAD_PEER(pad)		(GST_PAD_CAST(pad)->peer)
 #define GST_PAD_LINKFUNC(pad)		(GST_PAD_CAST(pad)->linkfunc)
 #define GST_PAD_UNLINKFUNC(pad)		(GST_PAD_CAST(pad)->unlinkfunc)
 
+/**
+ * GST_PAD_CAPS:
+ * @pad: a #GstPad.
+ *
+ * The caps for this pad.
+ */
 #define GST_PAD_CAPS(pad)		(GST_PAD_CAST(pad)->caps)
 #define GST_PAD_GETCAPSFUNC(pad)	(GST_PAD_CAST(pad)->getcapsfunc)
 #define GST_PAD_SETCAPSFUNC(pad)	(GST_PAD_CAST(pad)->setcapsfunc)
@@ -741,7 +808,9 @@
 
 /* FIXME: this awful circular dependency need to be resolved properly (see padtemplate.h) */
 #include <gst/gstpadtemplate.h>
-
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
 GType			gst_pad_get_type			(void);
 
 /* creating pads */
@@ -783,6 +852,9 @@
  */
 #define gst_pad_get_parent(pad) gst_object_get_parent (GST_OBJECT_CAST (pad))
 
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
 GstPadDirection		gst_pad_get_direction			(GstPad *pad);
 #ifdef __SYMBIAN32__
 IMPORT_C
@@ -821,6 +893,13 @@
 IMPORT_C
 #endif
 
+gboolean		gst_pad_set_blocked_async_full		(GstPad *pad, gboolean blocked,
+								 GstPadBlockCallback callback, gpointer user_data,
+                                                                 GDestroyNotify destroy_data);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
 gboolean		gst_pad_is_blocked			(GstPad *pad);
 #ifdef __SYMBIAN32__
 IMPORT_C
@@ -888,6 +967,11 @@
 IMPORT_C
 #endif
 
+void			gst_pad_set_chain_list_function	(GstPad *pad, GstPadChainListFunction chainlist);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
 void			gst_pad_set_getrange_function		(GstPad *pad, GstPadGetRangeFunction get);
 #ifdef __SYMBIAN32__
 IMPORT_C
@@ -916,6 +1000,11 @@
 #endif
 
 
+gboolean                gst_pad_can_link                        (GstPad *srcpad, GstPad *sinkpad);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
 GstPadLinkReturn        gst_pad_link				(GstPad *srcpad, GstPad *sinkpad);
 #ifdef __SYMBIAN32__
 IMPORT_C
@@ -962,7 +1051,7 @@
 
 G_CONST_RETURN GstCaps*	gst_pad_get_pad_template_caps		(GstPad *pad);
 
-/* capsnego function for connected/unconnected pads */
+/* capsnego function for linked/unlinked pads */
 #ifdef __SYMBIAN32__
 IMPORT_C
 #endif
@@ -995,7 +1084,7 @@
 
 gboolean		gst_pad_peer_accept_caps		(GstPad * pad, GstCaps *caps);
 
-/* capsnego for connected pads */
+/* capsnego for linked pads */
 #ifdef __SYMBIAN32__
 IMPORT_C
 #endif
@@ -1017,6 +1106,11 @@
 IMPORT_C
 #endif
 
+GstFlowReturn		gst_pad_push_list			(GstPad *pad, GstBufferList *list);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
 gboolean		gst_pad_check_pull_range		(GstPad *pad);
 #ifdef __SYMBIAN32__
 IMPORT_C
@@ -1045,6 +1139,11 @@
 IMPORT_C
 #endif
 
+GstFlowReturn		gst_pad_chain_list                      (GstPad *pad, GstBufferList *list);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
 GstFlowReturn		gst_pad_get_range			(GstPad *pad, guint64 offset, guint size,
 								 GstBuffer **buffer);
 #ifdef __SYMBIAN32__
@@ -1087,6 +1186,24 @@
 #endif
 
 GList*			gst_pad_get_internal_links_default	(GstPad *pad);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+
+void                    gst_pad_set_iterate_internal_links_function (GstPad * pad,
+                                                                 GstPadIterIntLinkFunction iterintlink);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstIterator *           gst_pad_iterate_internal_links          (GstPad * pad);
+#ifdef __SYMBIAN32__
+IMPORT_C
+#endif
+
+GstIterator *           gst_pad_iterate_internal_links_default  (GstPad * pad);
+
 
 /* generic query function */
 #ifdef __SYMBIAN32__