Move set_speed_feature out of frame encoding

Set speed features before running frame encoding. This avoids
redundant RD threshold calculation in key frame coding.

Change-Id: If8e3cf2c02976baa59b310c1c23af9eea0c46e36

vp9/encoder/vp9_encodeframe.c

@@ -2682,6 +2682,9 @@ void vp9_encode_frame(VP9_COMP *cpi) {
       }
     }
   } else {
+    cpi->mb.e_mbd.lossless = cpi->oxcf.lossless;
+    select_tx_mode(cpi);
+    cm->reference_mode = SINGLE_REFERENCE;
     // Force the usage of the BILINEAR interp_filter.
     cm->interp_filter = BILINEAR;
     encode_frame_internal(cpi);

vp9/encoder/vp9_onyx_if.c

@@ -3251,6 +3251,8 @@ static void encode_frame_to_data_rate(VP9_COMP *cpi,
     set_high_precision_mv(cpi, q < HIGH_PRECISION_MV_QTHRESH);
   }
 
+  vp9_set_speed_features(cpi);
+
   if (cpi->sf.recode_loop == DISALLOW_RECODE) {
     encode_without_recode_loop(cpi, size, dest, q);
   } else {

vp9/encoder/vp9_rdopt.c

@@ -282,8 +282,6 @@ void vp9_initialize_rd_consts(VP9_COMP *cpi) {
   x->errorperbit = cpi->RDMULT / RD_MULT_EPB_RATIO;
   x->errorperbit += (x->errorperbit == 0);
 
-  vp9_set_speed_features(cpi);
-
   x->select_txfm_size = (cpi->sf.tx_size_search_method == USE_LARGESTALL &&
                          cm->frame_type != KEY_FRAME) ? 0 : 1;