RTC: Account for missing comp_ref_type_cost

Performance:
| SPD_SET | TESTSET  | AVG_PSNR | OVR_PSNR |  SSIM   |  SPD  |
|---------|----------|----------|----------|---------|-------|
|    7    |   rtc    | -0.120%  | -0.184%  | -0.067% | -0.1% |
|    7    | rtc_derf | +0.090%  | +0.083%  | +0.166% | -0.1% |
|---------|----------|----------|----------|---------|-------|
|    8    |   rtc    | -0.077%  | -0.095%  | -0.076% | -0.1% |
|    8    | rtc_derf | -0.047%  | -0.023%  | -0.041% | -0.2% |
|---------|----------|----------|----------|---------|-------|
|    9    |   rtc    | -0.085%  | -0.067%  | -0.012% | -0.2% |
|    9    | rtc_derf | +0.000%  | +0.000%  | +0.000% | -0.0% |
|---------|----------|----------|----------|---------|-------|
|   10    |   rtc    | -0.001%  | +0.000%  | -0.037% | -0.2% |
|   10    | rtc_derf | +0.000%  | +0.000%  | +0.000% | -0.0% |

STATS_CHANGED

Change-Id: I34a859486f569820cdb7faad6a13869d6bc4d799
diff --git a/av1/encoder/nonrd_pickmode.c b/av1/encoder/nonrd_pickmode.c
index 2b5fac6..8ac3b5c 100644
--- a/av1/encoder/nonrd_pickmode.c
+++ b/av1/encoder/nonrd_pickmode.c
@@ -431,7 +431,7 @@
 static void estimate_single_ref_frame_costs(const AV1_COMMON *cm,
                                             const MACROBLOCKD *xd,
                                             const ModeCosts *mode_costs,
-                                            int segment_id,
+                                            int segment_id, BLOCK_SIZE bsize,
                                             unsigned int *ref_costs_single) {
   int seg_ref_active =
       segfeature_active(&cm->seg, segment_id, SEG_LVL_REF_FRAME);
@@ -442,6 +442,11 @@
     ref_costs_single[INTRA_FRAME] =
         mode_costs->intra_inter_cost[intra_inter_ctx][0];
     unsigned int base_cost = mode_costs->intra_inter_cost[intra_inter_ctx][1];
+    if (cm->current_frame.reference_mode == REFERENCE_MODE_SELECT &&
+        is_comp_ref_allowed(bsize)) {
+      const int comp_ref_type_ctx = av1_get_comp_reference_type_context(xd);
+      base_cost += mode_costs->comp_ref_type_cost[comp_ref_type_ctx][1];
+    }
     ref_costs_single[LAST_FRAME] = base_cost;
     ref_costs_single[GOLDEN_FRAME] = base_cost;
     ref_costs_single[ALTREF_FRAME] = base_cost;
@@ -2756,7 +2761,7 @@
 
   const ModeCosts *mode_costs = &x->mode_costs;
 
-  estimate_single_ref_frame_costs(cm, xd, mode_costs, segment_id,
+  estimate_single_ref_frame_costs(cm, xd, mode_costs, segment_id, bsize,
                                   ref_costs_single);
 
   memset(&mode_checked[0][0], 0, MB_MODE_COUNT * REF_FRAMES);