shithub: libvpx

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remove complex rd modeling.

The affect on quality was minimal.  Less than .1%, various sets
yt ( +.15%), derf (-.1%), hd ( -.1% ), std hd(-.15%)...

The affect on speed of encode at speed -5 was substantial ( ~3% ).

Change-Id: I8903346fbae0c35f5b9ea20f81fdd239ae81247d

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

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

@@ -419,18 +419,12 @@

     struct macroblock_plane *const p = &x->plane[i];

     struct macroblockd_plane *const pd = &xd->plane[i];

     const BLOCK_SIZE bs = get_plane_block_size(bsize, pd);

-    int rate;

-    int64_t dist;

     (void) cpi->fn_ptr[bs].vf(p->src.buf, p->src.stride,

                               pd->dst.buf, pd->dst.stride, &sse);

     if (i == 0)

       x->pred_sse[ref] = sse;

-    // sse works better than var, since there is no dc prediction used

-    model_rd_from_var_lapndz(sse, 1 << num_pels_log2_lookup[bs],

-                             pd->dequant[1] >> 3, &rate, &dist);

-    rate_sum += rate;

-    dist_sum += (int)dist;

+    dist_sum += (int)sse;

   }

   *out_rate_sum = rate_sum;

-- 

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