Change parameter limit to be <1, not <=1. This saves a bit.

Change-Id: Ia9220b7b499567e07307444defe86a1d386cb8f9

av1/common/warped_motion.c

@@ -669,8 +669,8 @@ static int is_affine_valid(WarpedMotionParams *wm) {
 
 static int is_affine_shear_allowed(int16_t alpha, int16_t beta, int16_t gamma,
                                    int16_t delta) {
-  if ((4 * abs(alpha) + 7 * abs(beta) > (1 << WARPEDMODEL_PREC_BITS)) ||
-      (4 * abs(gamma) + 4 * abs(delta) > (1 << WARPEDMODEL_PREC_BITS)))
+  if ((4 * abs(alpha) + 7 * abs(beta) >= (1 << WARPEDMODEL_PREC_BITS)) ||
+      (4 * abs(gamma) + 4 * abs(delta) >= (1 << WARPEDMODEL_PREC_BITS)))
     return 0;
   else
     return 1;

test/warp_filter_test_util.cc

@@ -80,8 +80,8 @@ void AV1WarpFilterTest::generate_model(int32_t *mat, int16_t *alpha,
                   (1 << WARPEDMODEL_PREC_BITS),
               INT16_MIN, INT16_MAX);
 
-    if ((4 * abs(*alpha) + 7 * abs(*beta) > (1 << WARPEDMODEL_PREC_BITS)) ||
-        (4 * abs(*gamma) + 4 * abs(*delta) > (1 << WARPEDMODEL_PREC_BITS)))
+    if ((4 * abs(*alpha) + 7 * abs(*beta) >= (1 << WARPEDMODEL_PREC_BITS)) ||
+        (4 * abs(*gamma) + 4 * abs(*delta) >= (1 << WARPEDMODEL_PREC_BITS)))
       continue;
 
     // We have a valid model, so finish
@@ -196,8 +196,8 @@ void AV1HighbdWarpFilterTest::generate_model(int32_t *mat, int16_t *alpha,
                   (1 << WARPEDMODEL_PREC_BITS),
               INT16_MIN, INT16_MAX);
 
-    if ((4 * abs(*alpha) + 7 * abs(*beta) > (1 << WARPEDMODEL_PREC_BITS)) ||
-        (4 * abs(*gamma) + 4 * abs(*delta) > (1 << WARPEDMODEL_PREC_BITS)))
+    if ((4 * abs(*alpha) + 7 * abs(*beta) >= (1 << WARPEDMODEL_PREC_BITS)) ||
+        (4 * abs(*gamma) + 4 * abs(*delta) >= (1 << WARPEDMODEL_PREC_BITS)))
       continue;
 
     // We have a valid model, so finish