VP9: Remove decoder args from find_mv_refs_idx()

The decoder does not use this function.

Change-Id: Ie67f909c0f4108ef286789c70df867d4b960a780

vp9/common/vp9_mvref_common.c

diff --git a/vp9/common/vp9_mvref_common.c b/vp9/common/vp9_mvref_common.c
index 9545729..9803ff6 100644
--- a/vp9/common/vp9_mvref_common.c
+++ b/vp9/common/vp9_mvref_common.c
@@ -17,7 +17,6 @@
                              MODE_INFO *mi, MV_REFERENCE_FRAME ref_frame,
                              int_mv *mv_ref_list,
                              int block, int mi_row, int mi_col,
-                             find_mv_refs_sync sync, void *const data,
                              uint8_t *mode_context) {
   const int *ref_sign_bias = cm->ref_frame_sign_bias;
   int i, refmv_count = 0;
@@ -70,23 +69,8 @@
     }
   }
 
-  // TODO(hkuang): Remove this sync after fixing pthread_cond_broadcast
-  // on windows platform. The sync here is unnecessary if use_prev_frame_mvs
-  // is 0. But after removing it, there will be hang in the unit test on windows
-  // due to several threads waiting for a thread's signal.
-#if defined(_WIN32) && !HAVE_PTHREAD_H
-    if (cm->frame_parallel_decode && sync != NULL) {
-      sync(data, mi_row);
-    }
-#endif
-
   // Check the last frame's mode and mv info.
   if (cm->use_prev_frame_mvs) {
-    // Synchronize here for frame parallel decode if sync function is provided.
-    if (cm->frame_parallel_decode && sync != NULL) {
-      sync(data, mi_row);
-    }
-
     if (prev_frame_mvs->ref_frame[0] == ref_frame) {
       ADD_MV_REF_LIST(prev_frame_mvs->mv[0], refmv_count, mv_ref_list, Done);
     } else if (prev_frame_mvs->ref_frame[1] == ref_frame) {
@@ -150,10 +134,9 @@
                       MODE_INFO *mi, MV_REFERENCE_FRAME ref_frame,
                       int_mv *mv_ref_list,
                       int mi_row, int mi_col,
-                      find_mv_refs_sync sync, void *const data,
                       uint8_t *mode_context) {
   find_mv_refs_idx(cm, xd, mi, ref_frame, mv_ref_list, -1,
-                   mi_row, mi_col, sync, data, mode_context);
+                   mi_row, mi_col, mode_context);
 }
 
 void vp9_find_best_ref_mvs(MACROBLOCKD *xd, int allow_hp,
@@ -181,7 +164,7 @@
   assert(MAX_MV_REF_CANDIDATES == 2);
 
   find_mv_refs_idx(cm, xd, mi, mi->mbmi.ref_frame[ref], mv_list, block,
-                   mi_row, mi_col, NULL, NULL, mode_context);
+                   mi_row, mi_col, mode_context);
 
   near_mv->as_int = 0;
   switch (block) {

vp9/common/vp9_mvref_common.h

diff --git a/vp9/common/vp9_mvref_common.h b/vp9/common/vp9_mvref_common.h
index 22fbaf8..aef96ad 100644
--- a/vp9/common/vp9_mvref_common.h
+++ b/vp9/common/vp9_mvref_common.h
@@ -221,7 +221,6 @@
 void vp9_find_mv_refs(const VP9_COMMON *cm, const MACROBLOCKD *xd,
                       MODE_INFO *mi, MV_REFERENCE_FRAME ref_frame,
                       int_mv *mv_ref_list, int mi_row, int mi_col,
-                      find_mv_refs_sync sync, void *const data,
                       uint8_t *mode_context);
 
 // check a list of motion vectors by sad score using a number rows of pixels

vp9/encoder/vp9_pickmode.c

diff --git a/vp9/encoder/vp9_pickmode.c b/vp9/encoder/vp9_pickmode.c
index 71b8bdb..4880ff6 100644
--- a/vp9/encoder/vp9_pickmode.c
+++ b/vp9/encoder/vp9_pickmode.c
@@ -1225,8 +1225,7 @@
 
       if (cm->use_prev_frame_mvs)
         vp9_find_mv_refs(cm, xd, xd->mi[0], ref_frame,
-                         candidates, mi_row, mi_col, NULL, NULL,
-                         x->mbmi_ext->mode_context);
+                         candidates, mi_row, mi_col, x->mbmi_ext->mode_context);
       else
         const_motion[ref_frame] = mv_refs_rt(cm, x, xd, tile_info,
                                              xd->mi[0],
@@ -1833,8 +1832,7 @@
       vp9_setup_pred_block(xd, yv12_mb[ref_frame], yv12, mi_row, mi_col,
                            sf, sf);
       vp9_find_mv_refs(cm, xd, xd->mi[0], ref_frame,
-                       candidates, mi_row, mi_col, NULL, NULL,
-                       mbmi_ext->mode_context);
+                       candidates, mi_row, mi_col, mbmi_ext->mode_context);
 
       vp9_find_best_ref_mvs(xd, cm->allow_high_precision_mv, candidates,
                             &dummy_mv[0], &dummy_mv[1]);

vp9/encoder/vp9_rdopt.c

diff --git a/vp9/encoder/vp9_rdopt.c b/vp9/encoder/vp9_rdopt.c
index b8d1720..8ab4c8b 100644
--- a/vp9/encoder/vp9_rdopt.c
+++ b/vp9/encoder/vp9_rdopt.c
@@ -2202,7 +2202,7 @@
 
   // Gets an initial list of candidate vectors from neighbours and orders them
   vp9_find_mv_refs(cm, xd, mi, ref_frame, candidates, mi_row, mi_col,
-                   NULL, NULL, mbmi_ext->mode_context);
+                   mbmi_ext->mode_context);
 
   // Candidate refinement carried out at encoder and decoder
   vp9_find_best_ref_mvs(xd, cm->allow_high_precision_mv, candidates,