diff mbox

[FFmpeg-devel,v2,09/10] lavfi/nlmeans: reorder memory accesses in get_integral_patch_value

Message ID 20180507172422.11003-10-u@pkh.me
State New
Headers show

Commit Message

Clément Bœsch May 7, 2018, 5:24 p.m. UTC 
This doesn't seem to make much of a difference but it can't hurt.
---
 libavfilter/vf_nlmeans.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
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Patch

diff --git a/libavfilter/vf_nlmeans.c b/libavfilter/vf_nlmeans.c
index 72a75a6e7a..22d26a12e3 100644
--- a/libavfilter/vf_nlmeans.c
+++ b/libavfilter/vf_nlmeans.c
@@ -131,10 +131,10 @@  static int query_formats(AVFilterContext *ctx)
  */
 static inline int get_integral_patch_value(const uint32_t *ii, int ii_lz_32, int x, int y, int p)
 {
-    const int e = ii[(y + p    ) * ii_lz_32 + (x + p    )];
-    const int d = ii[(y + p    ) * ii_lz_32 + (x - p - 1)];
-    const int b = ii[(y - p - 1) * ii_lz_32 + (x + p    )];
     const int a = ii[(y - p - 1) * ii_lz_32 + (x - p - 1)];
+    const int b = ii[(y - p - 1) * ii_lz_32 + (x + p    )];
+    const int d = ii[(y + p    ) * ii_lz_32 + (x - p - 1)];
+    const int e = ii[(y + p    ) * ii_lz_32 + (x + p    )];
     return e - d - b + a;
 }