shithub: libvpx

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vp9: SVC: Adjust some speed settings for temporal layers.

Make some speed setting changes for temporal enhancement layers,
and remove the switch in subpel_force_stop for the aggressive_base_mv
in non-rd pickmode.

Gain some 2-3% speed with little/negligible quality loss.

Change-Id: I3e2a7f80ff45f38c0a6ceb01b34dbca2f53edbf0

--- a/vp9/encoder/vp9_pickmode.c

+++ b/vp9/encoder/vp9_pickmode.c

@@ -211,9 +211,7 @@

       !(RDCOST(x->rdmult, x->rddiv, (*rate_mv + rate_mode), 0) > best_rd_sofar);

   if (rv) {

-    const int subpel_force_stop = use_base_mv && cpi->sf.base_mv_aggressive

-                                      ? 2

-                                      : cpi->sf.mv.subpel_force_stop;

+    const int subpel_force_stop = cpi->sf.mv.subpel_force_stop;

     cpi->find_fractional_mv_step(

         x, &tmp_mv->as_mv, &ref_mv, cpi->common.allow_high_precision_mv,

         x->errorperbit, &cpi->fn_ptr[bsize], subpel_force_stop,

--- a/vp9/encoder/vp9_speed_features.c

+++ b/vp9/encoder/vp9_speed_features.c

@@ -530,7 +530,15 @@

       // Enable short circuit for low temporal variance.

       sf->short_circuit_low_temp_var = 1;

     }

-    if (cpi->use_svc) sf->base_mv_aggressive = 1;

+    if (cpi->svc.temporal_layer_id > 0) {

+      sf->adaptive_rd_thresh = 4;

+      sf->limit_newmv_early_exit = 0;

+      sf->mv.subpel_force_stop = (cpi->svc.temporal_layer_id == 1) ? 1 : 2;

+      sf->base_mv_aggressive =

+          (cpi->svc.temporal_layer_id == cpi->svc.number_temporal_layers - 1)

+              ? 1

+              : 0;

+    }

   }

   if (speed >= 7) {