Index: source/blender/blenkernel/intern/key.c
===================================================================
--- source/blender/blenkernel/intern/key.c	(revision 57691)
+++ source/blender/blenkernel/intern/key.c	(working copy)
@@ -280,6 +280,16 @@
 		data[2] =  (fc - 2.0f) * t3  + (3.0f - 2.0f * fc) * t2 + fc * t;
 		data[3] =  fc          * t3  - fc * t2;
 	}
+	else if (type == KEY_CATMULL_ROM) {
+		t2 = t * t;
+		t3 = t2 * t;
+		fc = 0.5f;
+
+		data[0] = -fc          * t3  + 2.0f * fc          * t2 - fc * t;
+		data[1] =  (2.0f - fc) * t3  + (fc - 3.0f)        * t2 + 1.0f;
+		data[2] =  (fc - 2.0f) * t3  + (3.0f - 2.0f * fc) * t2 + fc * t;
+		data[3] =  fc          * t3  - fc * t2;
+	}
 	else if (type == KEY_BSPLINE) {
 		t2 = t * t;
 		t3 = t2 * t;
@@ -311,6 +321,15 @@
 		data[2] =  3.0f * (fc - 2.0f) * t2  + 2.0f * (3.0f - 2.0f * fc) * t  + fc;
 		data[3] =  3.0f * fc          * t2  - 2.0f * fc * t;
 	}
+	else if (type == KEY_CATMULL_ROM) {
+		t2 = t * t;
+		fc = 0.5f;
+
+		data[0] = -3.0f * fc          * t2  + 4.0f * fc * t                  - fc;
+		data[1] =  3.0f * (2.0f - fc) * t2  + 2.0f * (fc - 3.0f) * t;
+		data[2] =  3.0f * (fc - 2.0f) * t2  + 2.0f * (3.0f - 2.0f * fc) * t  + fc;
+		data[3] =  3.0f * fc          * t2  - 2.0f * fc * t;
+	}
 	else if (type == KEY_BSPLINE) {
 		t2 = t * t;
 
@@ -337,6 +356,14 @@
 
 		data[0] = -6.0f * fc          * t  + 4.0f * fc;
 		data[1] =  6.0f * (2.0f - fc) * t  + 2.0f * (fc - 3.0f);
+		data[2] =  6.0f * (fc - 2.0f) * t  + 2.0f * (3.0f - 2.0f * fc);
+		data[3] =  6.0f * fc          * t  - 2.0f * fc;
+	}
+	else if (type == KEY_CATMULL_ROM) {
+		fc = 0.5f;
+
+		data[0] = -6.0f * fc          * t  + 4.0f * fc;
+		data[1] =  6.0f * (2.0f - fc) * t  + 2.0f * (fc - 3.0f);
 		data[2] =  6.0f * (fc - 2.0f) * t  + 2.0f * (3.0f - 2.0f * fc);
 		data[3] =  6.0f * fc          * t  - 2.0f * fc;
 	}
Index: source/blender/makesdna/DNA_key_types.h
===================================================================
--- source/blender/makesdna/DNA_key_types.h	(revision 57691)
+++ source/blender/makesdna/DNA_key_types.h	(working copy)
@@ -125,7 +125,8 @@
 enum {
 	KEY_LINEAR      = 0,
 	KEY_CARDINAL    = 1,
-	KEY_BSPLINE     = 2
+	KEY_CATMULL_ROM = 2,
+	KEY_BSPLINE     = 3
 };
 
 /* KeyBlock->flag */
Index: source/blender/makesrna/intern/rna_key.c
===================================================================
--- source/blender/makesrna/intern/rna_key.c	(revision 57691)
+++ source/blender/makesrna/intern/rna_key.c	(working copy)
@@ -458,6 +458,7 @@
 EnumPropertyItem keyblock_type_items[] = {
 	{KEY_LINEAR, "KEY_LINEAR", 0, "Linear", ""},
 	{KEY_CARDINAL, "KEY_CARDINAL", 0, "Cardinal", ""},
+	{KEY_CATMULL_ROM, "KEY_CATMULL_ROM", 0, "Catmull-Rom", ""},
 	{KEY_BSPLINE, "KEY_BSPLINE", 0, "BSpline", ""},
 	{0, NULL, 0, NULL, NULL}
 };