Index: trunk/src/com/drew/imaging/tiff/TiffHandler.java
===================================================================
--- trunk/src/com/drew/imaging/tiff/TiffHandler.java	(revision 8243)
+++ trunk/src/com/drew/imaging/tiff/TiffHandler.java	(revision 10862)
@@ -1,4 +1,4 @@
 /*
- * Copyright 2002-2015 Drew Noakes
+ * Copyright 2002-2016 Drew Noakes
  *
  *    Licensed under the Apache License, Version 2.0 (the "License");
@@ -24,4 +24,5 @@
 import com.drew.lang.Rational;
 import com.drew.lang.annotations.NotNull;
+import com.drew.lang.annotations.Nullable;
 
 import java.io.IOException;
@@ -46,5 +47,5 @@
     void setTiffMarker(int marker) throws TiffProcessingException;
 
-    boolean isTagIfdPointer(int tagType);
+    boolean tryEnterSubIfd(int tagId);
     boolean hasFollowerIfd();
 
@@ -52,4 +53,7 @@
 
     void completed(@NotNull final RandomAccessReader reader, final int tiffHeaderOffset);
+
+    @Nullable
+    Long tryCustomProcessFormat(int tagId, int formatCode, long componentCount);
 
     boolean customProcessTag(int tagOffset,