commit 05af6120d2fc32f2618a0edc897e93675f7c39bd
author Wan-Teh Chang <wtc@google.com> Fri Apr 05 16:47:32 2019 -0700
committer Wan-Teh Chang <wtc@google.com> Tue Apr 09 16:33:43 2019 +0000
tree 50afb6e02e209209d19f29bb7c993abaf42362e7
parent cff7444854a6f7a548bb97395e00ea5d05d617b2

Simplify how grain_max is calculated.

Change-Id: Iee22861d54c609c47575b2112263ac892783bd38

aom_dsp/grain_synthesis.c

diff --git a/aom_dsp/grain_synthesis.c b/aom_dsp/grain_synthesis.c
index 4b94dbc..626eb76 100644
--- a/aom_dsp/grain_synthesis.c
+++ b/aom_dsp/grain_synthesis.c
@@ -1078,7 +1078,7 @@
 
   const int grain_center = 128 << (bit_depth - 8);
   grain_min = 0 - grain_center;
-  grain_max = (256 << (bit_depth - 8)) - 1 - grain_center;
+  grain_max = grain_center - 1;
 
   init_arrays(params, luma_stride, chroma_stride, &pred_pos_luma,
               &pred_pos_chroma, &luma_grain_block, &cb_grain_block,