shithub: libvpx

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Merge "fast approximate model_rd_from_var_lapndz"

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

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

@@ -444,8 +444,21 @@

     if (i == 0)

       x->pred_sse[ref] = sse;

-    if (cpi->sf.use_pick_mode) {

-      dist_sum += (int)sse;

+

+    // Fast approximate the modelling function.

+    if (cpi->oxcf.cpu_used < -4) {

+      int rate;

+      int64_t dist;

+      int64_t square_error = sse;

+      int quantizer = (pd->dequant[1] >> 3);

+

+      if ( quantizer < 120)

+        rate = (square_error * (280-quantizer) )>> 8;

+      else

+        rate = 0;

+      dist = (square_error * quantizer) >> 8;

+      rate_sum += rate;

+      dist_sum += dist;

     } else {

       int rate;

       int64_t dist;