[FFmpeg-devel] [PATCH 6/7] avfilter/phase_template: Fix left-shift of negative numbers

[Andreas Rheinhardt]

Affected the filter-phase FATE-test.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
---
 libavfilter/phase_template.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/phase_template.c b/libavfilter/phase_template.c
index 491612b826..8450670234 100644
--- a/libavfilter/phase_template.c
+++ b/libavfilter/phase_template.c
@@ -46,7 +46,7 @@
  *
  * (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]) * 4) + (a)[(as) * 2] - (b)[-(bs)], (t) * (t))
 
 /*
  * Find which field combination has the smallest average squared difference
-- 
2.34.1