Test yuv scaler with scale factor of 1

BUG=none
TEST=ScaleDownBy1
R=gangji@google.com

Review URL: https://webrtc-codereview.appspot.com/1592004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@715 16f28f9a-4ce2-e073-06de-1de4eb20be90

include/libyuv/row.h

@@ -109,8 +109,6 @@ extern "C" {
 #define HAS_ARGBBLENDROW_SSSE3
 #define HAS_ARGBCOLORMATRIXROW_SSSE3
 #define HAS_ARGBGRAYROW_SSSE3
-#define HAS_INTERPOLATEROW_SSE2
-#define HAS_INTERPOLATEROW_SSSE3
 #define HAS_ARGBMIRRORROW_SSSE3
 #define HAS_ARGBMULTIPLYROW_SSE2
 #define HAS_ARGBQUANTIZEROW_SSE2
@@ -120,6 +118,8 @@ extern "C" {
 #define HAS_ARGBUNATTENUATEROW_SSE2
 #define HAS_COMPUTECUMULATIVESUMROW_SSE2
 #define HAS_CUMULATIVESUMTOAVERAGEROW_SSE2
+#define HAS_INTERPOLATEROW_SSE2
+#define HAS_INTERPOLATEROW_SSSE3
 #define HAS_SOBELROW_SSE2
 #define HAS_SOBELXROW_SSSE3
 #define HAS_SOBELXYROW_SSE2

source/row_posix.cc

@@ -4896,6 +4896,7 @@ void InterpolateRow_SSSE3(uint8* dst_ptr, const uint8* src_ptr,
   );
 }
 
+#ifdef HAS_INTERPOLATEROW_SSE2
 // Bilinear filter 16x2 -> 16x1
 void InterpolateRow_SSE2(uint8* dst_ptr, const uint8* src_ptr,
                          ptrdiff_t src_stride, int dst_width,
@@ -5006,6 +5007,7 @@ void InterpolateRow_SSE2(uint8* dst_ptr, const uint8* src_ptr,
 #endif
   );
 }
+#endif  // HAS_INTERPOLATEROW_SSE2
 
 // Bilinear filter 16x2 -> 16x1
 void InterpolateRow_Unaligned_SSSE3(uint8* dst_ptr, const uint8* src_ptr,
@@ -5110,6 +5112,7 @@ void InterpolateRow_Unaligned_SSSE3(uint8* dst_ptr, const uint8* src_ptr,
   );
 }
 
+#ifdef HAS_INTERPOLATEROW_SSE2
 // Bilinear filter 16x2 -> 16x1
 void InterpolateRow_Unaligned_SSE2(uint8* dst_ptr, const uint8* src_ptr,
                                    ptrdiff_t src_stride, int dst_width,
@@ -5220,6 +5223,7 @@ void InterpolateRow_Unaligned_SSE2(uint8* dst_ptr, const uint8* src_ptr,
 #endif
   );
 }
+#endif  // HAS_INTERPOLATEROW_SSE2
 
 void HalfRow_SSE2(const uint8* src_uv, int src_uv_stride,
                   uint8* dst_uv, int pix) {

source/row_win.cc

@@ -6028,6 +6028,7 @@ void InterpolateRow_SSSE3(uint8* dst_ptr, const uint8* src_ptr,
   }
 }
 
+#ifdef HAS_INTERPOLATEROW_SSE2
 // Bilinear filter 16x2 -> 16x1
 __declspec(naked) __declspec(align(16))
 void InterpolateRow_SSE2(uint8* dst_ptr, const uint8* src_ptr,
@@ -6138,6 +6139,7 @@ void InterpolateRow_SSE2(uint8* dst_ptr, const uint8* src_ptr,
     ret
   }
 }
+#endif  // HAS_INTERPOLATEROW_SSE2
 
 // Bilinear filter 16x2 -> 16x1
 __declspec(naked) __declspec(align(16))
@@ -6244,6 +6246,7 @@ void InterpolateRow_Unaligned_SSSE3(uint8* dst_ptr, const uint8* src_ptr,
   }
 }
 
+#ifdef HAS_INTERPOLATEROW_SSE2
 // Bilinear filter 16x2 -> 16x1
 __declspec(naked) __declspec(align(16))
 void InterpolateRow_Unaligned_SSE2(uint8* dst_ptr, const uint8* src_ptr,
@@ -6354,6 +6357,7 @@ void InterpolateRow_Unaligned_SSE2(uint8* dst_ptr, const uint8* src_ptr,
     ret
   }
 }
+#endif  // HAS_INTERPOLATEROW_SSE2
 
 __declspec(naked) __declspec(align(16))
 void HalfRow_SSE2(const uint8* src_uv, int src_uv_stride,

unit_test/scale_test.cc

@@ -165,6 +165,45 @@ static int TestFilter(int src_width, int src_height,
   return max_diff;
 }
 
+TEST_F(libyuvTest, ScaleDownBy1_None) {
+  const int src_width = benchmark_width_;
+  const int src_height = benchmark_height_;
+  const int dst_width = Abs(src_width) / 1;
+  const int dst_height = Abs(src_height) / 1;
+
+  int max_diff = TestFilter(src_width, src_height,
+                            dst_width, dst_height,
+                            kFilterNone,
+                            benchmark_iterations_);
+  EXPECT_EQ(0, max_diff);
+}
+
+TEST_F(libyuvTest, ScaleDownBy1_Bilinear) {
+  const int src_width = benchmark_width_;
+  const int src_height = benchmark_height_;
+  const int dst_width = Abs(src_width) / 1;
+  const int dst_height = Abs(src_height) / 1;
+
+  int max_diff = TestFilter(src_width, src_height,
+                            dst_width, dst_height,
+                            kFilterBilinear,
+                            benchmark_iterations_);
+  EXPECT_LE(max_diff, 1);
+}
+
+TEST_F(libyuvTest, ScaleDownBy1_Box) {
+  const int src_width = benchmark_width_;
+  const int src_height = benchmark_height_;
+  const int dst_width = Abs(src_width) / 1;
+  const int dst_height = Abs(src_height) / 1;
+
+  int max_diff = TestFilter(src_width, src_height,
+                            dst_width, dst_height,
+                            kFilterBox,
+                            benchmark_iterations_);
+  EXPECT_LE(max_diff, 1);
+}
+
 TEST_F(libyuvTest, ScaleDownBy2_None) {
   const int src_width = benchmark_width_;
   const int src_height = benchmark_height_;