From: Jingning Han <jingning@google.com>
Date: Fri, 24 Aug 2018 19:54:58 +0000 (-0700)
Subject: Fix arf_src_offset calculation
X-Git-Tag: v1.8.0~373^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=97e9cbe88bc2bd1a93ca58413f3d475ff8afe5b1;p=libvpx

Fix arf_src_offset calculation

The offset should be computed with respect to the current coding
process standing.

Change-Id: I63fc303eb062d5fd68b8d1faa3b4172cdfcce168
---

diff --git a/vp9/encoder/vp9_firstpass.c b/vp9/encoder/vp9_firstpass.c
index 876a2fb4f..38e1d37cc 100644
--- a/vp9/encoder/vp9_firstpass.c
+++ b/vp9/encoder/vp9_firstpass.c
@@ -2355,7 +2355,7 @@ static void find_arf_order(GF_GROUP *gf_group, int *layer_depth,
   // Process ARF frame
   layer_depth[*index_counter] = depth;
   gf_group->update_type[*index_counter] = ARF_UPDATE;
-  gf_group->arf_src_offset[*index_counter] = mid;
+  gf_group->arf_src_offset[*index_counter] = mid - start;
   gf_group->rf_level[*index_counter] = GF_ARF_LOW;
   ++(*index_counter);