shithub: libvpx

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adjust rtc setting and threshold

1. Adjusted the threshold for coef update computation based on counts
of tx used, avoid coef update computation when count is low (<20)
2. Move sf->lpf_pick = LPF_PICK_MINIMAL_LPF to speed 8.

Change-Id: I02b44309e40fcdbf135c7934ae067a3f42502d30

--- a/vp9/encoder/vp9_bitstream.c

+++ b/vp9/encoder/vp9_bitstream.c

@@ -674,7 +674,7 @@

   for (tx_size = TX_4X4; tx_size <= max_tx_size; ++tx_size) {

     vp9_coeff_stats frame_branch_ct[PLANE_TYPES];

     vp9_coeff_probs_model frame_coef_probs[PLANE_TYPES];

-    if (cpi->td.counts->tx.tx_totals[tx_size] == 0 ||

+    if (cpi->td.counts->tx.tx_totals[tx_size] <= 20 ||

         (tx_size >= TX_16X16 && cpi->sf.tx_size_search_method == USE_TX_8X8)) {

       vp9_write_bit(w, 0);

     } else {

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

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

@@ -337,11 +337,11 @@

     sf->adaptive_rd_thresh = 3;

     sf->mv.search_method = FAST_DIAMOND;

     sf->mv.fullpel_search_step_param = 10;

-    sf->lpf_pick = LPF_PICK_MINIMAL_LPF;

   }

   if (speed >= 8) {

     sf->adaptive_rd_thresh = 4;

     sf->mv.subpel_force_stop = 2;

+    sf->lpf_pick = LPF_PICK_MINIMAL_LPF;

   }

 }