commit dd6e402a3a395900b60b7937a91a8fc3663632a1
author Yue Chen <yuec@google.com> Wed Mar 22 12:41:52 2017 -0700
committer Yue Chen <yuec@google.com> Wed Mar 22 22:32:04 2017 +0000
tree 64ed14eb86398f396e0d0ca07b2318bb1d01ec23
parent 5f5c132fef4ffedf9e81ec9a4e1db9e73bcf0af6

Remove check for identical neighboring mv field in WARPED_MOTION

This will allow us decode motion mode without knowing motion vectors
in the neighborhood.
Improves the performance by 0.3% (1.1->1.4)

Change-Id: Ie18ee2b02b1d2f89615bc8fa423beb1f9bd9a678

av1/common/mvref_common.c

diff --git a/av1/common/mvref_common.c b/av1/common/mvref_common.c
index 5946b5e..b5881a6 100644
--- a/av1/common/mvref_common.c
+++ b/av1/common/mvref_common.c
@@ -1104,8 +1104,6 @@
   int up_available = xd->up_available;
   int left_available = xd->left_available;
   int i, mi_step, np = 0;
-  int mvasint[100];
-  int mvnumber = 0;
   int global_offset_c = mi_col * MI_SIZE;
   int global_offset_r = mi_row * MI_SIZE;
 
@@ -1128,9 +1126,6 @@
         int j;
         int pixelperblock = SAMPLES_PER_NEIGHBOR;
 
-        mvasint[mvnumber] = mbmi->mv[0].as_int;
-        mvnumber++;
-
         for (j = 0; j < pixelperblock; j++) {
           int x = cc_offset + j % 2 + global_offset_c;
           int y = cr_offset + j / 2 + global_offset_r;
@@ -1171,9 +1166,6 @@
         int j;
         int pixelperblock = SAMPLES_PER_NEIGHBOR;
 
-        mvasint[mvnumber] = mbmi->mv[0].as_int;
-        mvnumber++;
-
         for (j = 0; j < pixelperblock; j++) {
           int x = cc_offset + j % 2 + global_offset_c;
           int y = cr_offset + j / 2 + global_offset_r;
@@ -1210,9 +1202,6 @@
       int j;
       int pixelperblock = SAMPLES_PER_NEIGHBOR;
 
-      mvasint[mvnumber] = mbmi->mv[0].as_int;
-      mvnumber++;
-
       for (j = 0; j < pixelperblock; j++) {
         int x = cc_offset + j % 2 + global_offset_c;
         int y = cr_offset + j / 2 + global_offset_r;
@@ -1233,11 +1222,7 @@
   }
   assert(2 * np <= SAMPLES_ARRAY_SIZE);
 
-  for (i = 0; i < (mvnumber - 1); ++i) {
-    if (mvasint[i] != mvasint[i + 1]) break;
-  }
-
-  if (np == 0 || i == (mvnumber - 1)) {
+  if (np == 0) {
     return 0;
   } else {
     MODE_INFO *mi = xd->mi[0];