shithub: dav1d

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Don't call mask_edges_chroma when !bw4 or !bh4

Fix issue #70

--- a/src/lf_mask.c

+++ b/src/lf_mask.c

@@ -297,6 +297,9 @@

                           (b_dim[0] + ss_hor) >> ss_hor);

     const int cbh4 = imin(((ih + ss_ver) >> ss_ver) - (by >> ss_ver),

                           (b_dim[1] + ss_ver) >> ss_ver);

+

+    if (!cbw4 || !cbh4) return;

+

     const int cbx4 = bx4 >> ss_hor;

     const int cby4 = by4 >> ss_ver;

@@ -359,6 +362,9 @@

                           (b_dim[0] + ss_hor) >> ss_hor);

     const int cbh4 = imin(((ih + ss_ver) >> ss_ver) - (by >> ss_ver),

                           (b_dim[1] + ss_ver) >> ss_ver);

+

+    if (!cbw4 || !cbh4) return;

+

     const int cbx4 = bx4 >> ss_hor;

     const int cby4 = by4 >> ss_ver;