shithub: libvpx

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Fix arf_src_offset calculation

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

Change-Id: I63fc303eb062d5fd68b8d1faa3b4172cdfcce168

--- a/vp9/encoder/vp9_firstpass.c

+++ b/vp9/encoder/vp9_firstpass.c

@@ -2355,7 +2355,7 @@

   // 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);