avfilter/vf_phase: Add () to protect DIFF()s arguments

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago · f15c734be1
parent 0cb95f9082
commit f15c734be1
1 changed files with 1 additions and 1 deletions
--- a/libavfilter/vf_phase.c
+++ b/libavfilter/vf_phase.c
@ -106,7 +106,7 @@ static int config_input(AVFilterLink *inlink)
 *
 * (The result is actually multiplied by 25)
 */
-#define DIFF(a, as, b, bs) (t = ((*a - b[bs]) << 2) + a[as << 1] - b[-bs], t * t)
+#define DIFF(a, as, b, bs) ((t) = ((*(a) - (b)[bs]) << 2) + (a)[(as) << 1] - (b)[-(bs)], (t) * (t))

 /*
 * Find which field combination has the smallest average squared difference