Rework the CDEF top edge handling

Avoids some pointer chasing and simplifies the DSP code, at the cost
of making the initialization a little bit more complicated.

Also reduces memory usage by a small amount due to properly sizing
the buffers instead of always allocating enough space for 4:4:4.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/cdef.h b/src/cdef.h
index 6cdb2ae..5dd52cf 100644
--- a/src/cdef.h
+++ b/src/cdef.h
@@ -52,7 +52,7 @@ typedef const void *const_left_pixel_row_2px;
 // order to get access to pre-filter top pixels, use $top.
 #define decl_cdef_fn(name) \
 void (name)(pixel *dst, ptrdiff_t stride, const_left_pixel_row_2px left, \
-            /*const*/ pixel *const top[2], int pri_strength, int sec_strength, \
+            const pixel *top, int pri_strength, int sec_strength, \
             int dir, int damping, enum CdefEdgeFlags edges HIGHBD_DECL_SUFFIX)
 typedef decl_cdef_fn(*cdef_fn);