shithub: libvpx

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Fix arf boost factor calculation for intermediate ARFs

Need to offset the forward range by 1 to include the stats for
the current frame itself.

Change-Id: I3b5171b7edef51ec4e97e4e0542ca58af5ce1416

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

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

@@ -2144,8 +2144,9 @@

   for (idx = 0; idx <= mid; ++idx)

     if (EOF == input_stats(twopass, &fpf_frame)) break;

-  gf_group->gfu_boost[*index_counter] = VPXMAX(

-      MIN_ARF_GF_BOOST, calc_arf_boost(cpi, end - mid, mid - start) >> depth);

+  gf_group->gfu_boost[*index_counter] =

+      VPXMAX(MIN_ARF_GF_BOOST,

+             calc_arf_boost(cpi, end - mid + 1, mid - start) >> depth);

   reset_fpf_position(twopass, start_pos);