Fixed a bug in recursive extrapolation filter for intra prediction

Estimation of local mean, which is used to get zero-mean signals
before linear filtering, is corrected.

Change-Id: If73d0ae479201fc60a34baa3f15d61e5aecb1162

diff --git a/vp9/common/vp9_reconintra.c b/vp9/common/vp9_reconintra.c
index 19f3645f094f32afea4f081f55d57aa90d7d8699..a8bd65609594e28a6bf7623e929e07ef16be963b 100644 (file)
--- a/vp9/common/vp9_reconintra.c
+++ b/vp9/common/vp9_reconintra.c
@@ -429,9 +429,9 @@ static void filter_intra_predictors(uint8_t *ypred_ptr, int y_stride, int bs,
   k = 0;
   mean = 0;
   while (k < bs) {
-    mean = mean + (int)yleft_col[r];
-    mean = mean + (int)yabove_row[c];
-    k++;
+    mean = mean + (int)yleft_col[k];
+    mean = mean + (int)yabove_row[k];
+    ++k;
   }
   mean = (mean + bs) / (2 * bs);