shithub: libvpx

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Bypass skip check in tune for sharpness mode

The sharpness mode is enabled for hvc visual quality. Bypass the
skip block check that could potentially force all zero block in
sharpness mode. This resolves the patchy blockiness issue raised
in the 4K SDR HVC encode.

Change-Id: I0538a1b774b80c6b0899c921e80edecd4a440d5c

--- a/vp9/encoder/vp9_rdopt.c

+++ b/vp9/encoder/vp9_rdopt.c

@@ -3718,7 +3718,8 @@

         // Cost the skip mb case

         rate2 += skip_cost1;

-      } else if (ref_frame != INTRA_FRAME && !xd->lossless) {

+      } else if (ref_frame != INTRA_FRAME && !xd->lossless &&

+                 !cpi->oxcf.sharpness) {

         if (RDCOST(x->rdmult, x->rddiv, rate_y + rate_uv + skip_cost0,

                    distortion2) <

             RDCOST(x->rdmult, x->rddiv, skip_cost1, total_sse)) {