avfilter/vf_vif: simplify case comparing same inputs

4 years ago · 550b7a9929
parent a5b737e625
commit 550b7a9929
1 changed files with 2 additions and 7 deletions
--- a/libavfilter/vf_vif.c
+++ b/libavfilter/vf_vif.c
@ -167,13 +167,8 @@ static void vif_statistic(const float *mu1_sq, const float *mu2_sq,
            num_val = log2f(1.0f + g * g * sigma1_sq / (sv_sq + sigma_nsq));
            den_val = log2f(1.0f + sigma1_sq / sigma_nsq);

-            if (sigma12 < 0.0f)
-                num_val = 0.0f;
-
-            if (sigma1_sq < sigma_nsq) {
-                num_val = 1.0f - sigma2_sq * sigma_max_inv;
-                den_val = 1.0f;
-            }
+            if (isnan(den_val))
+                num_val = den_val = 1.f;

            accum_inner_num += num_val;
            accum_inner_den += den_val;