docs: add deprecation guards

Move GstPadIntLinkFunction to private header to avoid a dozen #ifdefs. Use a
gpointer in public header instead.

gst/gst_private.h

@@ -241,5 +241,10 @@ extern GstDebugCategory *_priv_GST_CAT_POLL;
 
 #endif
 
+#ifdef GST_DISABLE_DEPRECATED
+typedef GList*			(*GstPadIntLinkFunction)	(GstPad *pad);
+#endif
+
+
 G_END_DECLS
 #endif /* __GST_PRIVATE_H__ */

gst/gstpad.c

@@ -1132,7 +1132,7 @@ had_right_state:
  * take an indeterminate amount of time.
  * You can pass NULL as the callback to make this call block. Be careful with
  * this blocking call as it might not return for reasons stated above.
- * 
+ *
  * <note>
  *  Pad block handlers are only called for source pads in push mode
  *  and sink pads in pull mode.
@@ -2022,7 +2022,7 @@ no_format:
  * @sinkpad: the sink #GstPad.
  *
  * Checks if the source pad and the sink pad are compatible so they can be
- * linked. 
+ * linked.
  *
  * Returns: TRUE if the pads can be linked.
  */
@@ -3287,7 +3287,7 @@ gst_pad_iterate_internal_links_default (GstPad * pad)
      * two concurrent iterators were used and the last iterator would still be
      * thread-unsafe. Just don't use this method anymore. */
     data = g_slice_new (IntLinkIterData);
-    data->list = GST_PAD_INTLINKFUNC (pad) (pad);
+    data->list = ((GstPadIntLinkFunction) GST_PAD_INTLINKFUNC (pad)) (pad);
     data->cookie = 0;
 
     GST_WARNING_OBJECT (pad, "Making unsafe iterator");
@@ -3398,7 +3398,7 @@ add_unref_pad_to_list (GstPad * pad, GList ** list)
  * Deprecated: This function does not ref the pads in the list so that they
  * could become invalid by the time the application accesses them. It's also
  * possible that the list changes while handling the pads, which the caller of
- * this function is unable to know. Use the thread-safe 
+ * this function is unable to know. Use the thread-safe
  * gst_pad_iterate_internal_links_default() instead.
  */
 #ifndef GST_REMOVE_DEPRECATED
@@ -3490,11 +3490,11 @@ no_parent:
  *
  * Returns: (transfer full) (element-type Gst.Pad): a newly allocated #GList
  *     of pads, free with g_list_free().
- * 
+ *
  * Deprecated: This function does not ref the pads in the list so that they
  * could become invalid by the time the application accesses them. It's also
  * possible that the list changes while handling the pads, which the caller of
- * this function is unable to know. Use the thread-safe 
+ * this function is unable to know. Use the thread-safe
  * gst_pad_iterate_internal_links() instead.
  */
 #ifndef GST_REMOVE_DEPRECATED
@@ -3511,7 +3511,7 @@ gst_pad_get_internal_links (GstPad * pad)
   GST_WARNING_OBJECT (pad, "Calling unsafe internal links");
 
   if (GST_PAD_INTLINKFUNC (pad))
-    res = GST_PAD_INTLINKFUNC (pad) (pad);
+    res = ((GstPadIntLinkFunction) GST_PAD_INTLINKFUNC (pad)) (pad);
 
   return res;
 }

gst/gstpad.h

@@ -192,7 +192,7 @@ GQuark			gst_flow_to_quark	(GstFlowReturn ret);
  * @GST_PAD_LINK_CHECK_NOTHING: Don't check hierarchy or caps compatibility.
  * @GST_PAD_LINK_CHECK_HIERARCHY: Check the pads have same parents/grandparents.
  *   Could be omitted if it is already known that the two elements that own the
- *   pads are in the same bin. 
+ *   pads are in the same bin.
  * @GST_PAD_LINK_CHECK_TEMPLATE_CAPS: Check if the pads are compatible by using
  *   their template caps. This is much faster than @GST_PAD_LINK_CHECK_CAPS, but
  *   would be unsafe e.g. if one pad has %GST_CAPS_ANY.
@@ -223,7 +223,7 @@ typedef enum {
 /**
  * GST_PAD_LINK_CHECK_DEFAULT:
  *
- * The default checks done when linking pads (i.e. the ones used by 
+ * The default checks done when linking pads (i.e. the ones used by
  * gst_pad_link()).
  *
  * Since: 0.10.30
@@ -405,7 +405,10 @@ typedef gboolean		(*GstPadCheckGetRangeFunction)	(GstPad *pad);
  *
  * Deprecated: use the threadsafe #GstPadIterIntLinkFunction instead.
  */
+#ifndef GST_DISABLE_DEPRECATED
 typedef GList*			(*GstPadIntLinkFunction)	(GstPad *pad);
+#endif
+
 
 /**
  * GstPadIterIntLinkFunction:
@@ -708,7 +711,11 @@ struct _GstPad {
   GstPadQueryFunction		 queryfunc;
 
   /* internal links */
-  GstPadIntLinkFunction		 intlinkfunc;
+#ifndef GST_DISABLE_DEPRECATED
+  GstPadIntLinkFunction		 _intlinkfunc;
+#else
+  gpointer intlinkfunc;
+#endif
 
   GstPadBufferAllocFunction      bufferallocfunc;
 

gst/gstplugin.h

@@ -298,6 +298,7 @@ G_END_DECLS
 /* We don't have deprecation guards here on purpose, it's enough to have
  * deprecation guards around _gst_plugin_register_static(), and will result in
  * much better error messages when compiling with -DGST_DISABLE_DEPRECATED */
+#ifndef GST_DISABLE_DEPRECATED
 #define GST_PLUGIN_DEFINE_STATIC(major,minor,name,description,init,version,license,package,origin)  \
 static void GST_GNUC_CONSTRUCTOR			\
 _gst_plugin_static_init__ ##init (void)			\
@@ -318,6 +319,7 @@ _gst_plugin_static_init__ ##init (void)			\
   };							\
   _gst_plugin_register_static (&plugin_desc_);		\
 }
+#endif
 
 /**
  * GST_LICENSE_UNKNOWN: