diff -r 000000000000 -r 6474c204b198 media/libyuv/unit_test/rotate_test.cc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/media/libyuv/unit_test/rotate_test.cc	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,244 @@
+/*
+ *  Copyright 2012 The LibYuv Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS. All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <stdlib.h>
+#include <time.h>
+
+#include "libyuv/cpu_id.h"
+#include "libyuv/rotate.h"
+#include "libyuv/row.h"
+#include "../unit_test/unit_test.h"
+
+namespace libyuv {
+
+static void I420TestRotate(int src_width, int src_height,
+                           int dst_width, int dst_height,
+                           libyuv::RotationMode mode,
+                           int benchmark_iterations) {
+  if (src_width < 1) {
+    src_width = 1;
+  }
+  if (src_height < 1) {
+    src_height = 1;
+  }
+  if (dst_width < 1) {
+    dst_width = 1;
+  }
+  if (dst_height < 1) {
+    dst_height = 1;
+  }
+  int src_i420_y_size = src_width * src_height;
+  int src_i420_uv_size = ((src_width + 1) / 2) * ((src_height + 1) / 2);
+  int src_i420_size = src_i420_y_size + src_i420_uv_size * 2;
+  align_buffer_64(src_i420, src_i420_size);
+  for (int i = 0; i < src_i420_size; ++i) {
+    src_i420[i] = random() & 0xff;
+  }
+
+  int dst_i420_y_size = dst_width * dst_height;
+  int dst_i420_uv_size = ((dst_width + 1) / 2) * ((dst_height + 1) / 2);
+  int dst_i420_size = dst_i420_y_size + dst_i420_uv_size * 2;
+  align_buffer_64(dst_i420_c, dst_i420_size);
+  align_buffer_64(dst_i420_opt, dst_i420_size);
+  memset(dst_i420_c, 2, dst_i420_size);
+  memset(dst_i420_opt, 3, dst_i420_size);
+
+  MaskCpuFlags(0);  // Disable all CPU optimization.
+  I420Rotate(src_i420, src_width,
+             src_i420 + src_i420_y_size, (src_width + 1) / 2,
+             src_i420 + src_i420_y_size + src_i420_uv_size, (src_width + 1) / 2,
+             dst_i420_c, dst_width,
+             dst_i420_c + dst_i420_y_size, (dst_width + 1) / 2,
+             dst_i420_c + dst_i420_y_size + dst_i420_uv_size,
+               (dst_width + 1) / 2,
+             src_width, src_height, mode);
+
+  MaskCpuFlags(-1);  // Enable all CPU optimization.
+  for (int i = 0; i < benchmark_iterations; ++i) {
+    I420Rotate(src_i420, src_width,
+               src_i420 + src_i420_y_size, (src_width + 1) / 2,
+               src_i420 + src_i420_y_size + src_i420_uv_size,
+                 (src_width + 1) / 2,
+               dst_i420_opt, dst_width,
+               dst_i420_opt + dst_i420_y_size, (dst_width + 1) / 2,
+               dst_i420_opt + dst_i420_y_size + dst_i420_uv_size,
+                 (dst_width + 1) / 2,
+               src_width, src_height, mode);
+  }
+
+  // Rotation should be exact.
+  for (int i = 0; i < dst_i420_size; ++i) {
+    EXPECT_EQ(dst_i420_c[i], dst_i420_opt[i]);
+  }
+
+  free_aligned_buffer_64(dst_i420_c);
+  free_aligned_buffer_64(dst_i420_opt);
+  free_aligned_buffer_64(src_i420);
+}
+
+TEST_F(libyuvTest, I420Rotate0) {
+  I420TestRotate(benchmark_width_, benchmark_height_,
+                 benchmark_width_, benchmark_height_,
+                 kRotate0, benchmark_iterations_);
+}
+
+TEST_F(libyuvTest, I420Rotate90) {
+  I420TestRotate(benchmark_width_, benchmark_height_,
+                 benchmark_height_, benchmark_width_,
+                 kRotate90, benchmark_iterations_);
+}
+
+TEST_F(libyuvTest, I420Rotate180) {
+  I420TestRotate(benchmark_width_, benchmark_height_,
+                 benchmark_width_, benchmark_height_,
+                 kRotate180, benchmark_iterations_);
+}
+
+TEST_F(libyuvTest, I420Rotate270) {
+  I420TestRotate(benchmark_width_, benchmark_height_,
+                 benchmark_height_, benchmark_width_,
+                 kRotate270, benchmark_iterations_);
+}
+
+TEST_F(libyuvTest, I420Rotate0_Odd) {
+  I420TestRotate(benchmark_width_ - 3, benchmark_height_ - 1,
+                 benchmark_width_ - 3, benchmark_height_ - 1,
+                 kRotate0, benchmark_iterations_);
+}
+
+TEST_F(libyuvTest, I420Rotate90_Odd) {
+  I420TestRotate(benchmark_width_ - 3, benchmark_height_ - 1,
+                 benchmark_height_ - 1, benchmark_width_ - 3,
+                 kRotate90, benchmark_iterations_);
+}
+
+TEST_F(libyuvTest, I420Rotate180_Odd) {
+  I420TestRotate(benchmark_width_ - 3, benchmark_height_ - 1,
+                 benchmark_width_ - 3, benchmark_height_ - 1,
+                 kRotate180, benchmark_iterations_);
+}
+
+TEST_F(libyuvTest, I420Rotate270_Odd) {
+  I420TestRotate(benchmark_width_ - 3, benchmark_height_ - 1,
+                 benchmark_height_ - 1, benchmark_width_ - 3,
+                 kRotate270, benchmark_iterations_);
+}
+
+static void NV12TestRotate(int src_width, int src_height,
+                           int dst_width, int dst_height,
+                           libyuv::RotationMode mode,
+                           int benchmark_iterations) {
+  if (src_width < 1) {
+    src_width = 1;
+  }
+  if (src_height < 1) {
+    src_height = 1;
+  }
+  if (dst_width < 1) {
+    dst_width = 1;
+  }
+  if (dst_height < 1) {
+    dst_height = 1;
+  }
+  int src_nv12_y_size = src_width * src_height;
+  int src_nv12_uv_size = ((src_width + 1) / 2) * ((src_height + 1) / 2) * 2;
+  int src_nv12_size = src_nv12_y_size + src_nv12_uv_size;
+  align_buffer_64(src_nv12, src_nv12_size);
+  for (int i = 0; i < src_nv12_size; ++i) {
+    src_nv12[i] = random() & 0xff;
+  }
+
+  int dst_i420_y_size = dst_width * dst_height;
+  int dst_i420_uv_size = ((dst_width + 1) / 2) * ((dst_height + 1) / 2);
+  int dst_i420_size = dst_i420_y_size + dst_i420_uv_size * 2;
+  align_buffer_64(dst_i420_c, dst_i420_size);
+  align_buffer_64(dst_i420_opt, dst_i420_size);
+  memset(dst_i420_c, 2, dst_i420_size);
+  memset(dst_i420_opt, 3, dst_i420_size);
+
+  MaskCpuFlags(0);  // Disable all CPU optimization.
+  NV12ToI420Rotate(src_nv12, src_width,
+                   src_nv12 + src_nv12_y_size, (src_width + 1) & ~1,
+                   dst_i420_c, dst_width,
+                   dst_i420_c + dst_i420_y_size, (dst_width + 1) / 2,
+                   dst_i420_c + dst_i420_y_size + dst_i420_uv_size,
+                     (dst_width + 1) / 2,
+                   src_width, src_height, mode);
+
+  MaskCpuFlags(-1);  // Enable all CPU optimization.
+  for (int i = 0; i < benchmark_iterations; ++i) {
+    NV12ToI420Rotate(src_nv12, src_width,
+                     src_nv12 + src_nv12_y_size, (src_width + 1) & ~1,
+                     dst_i420_opt, dst_width,
+                     dst_i420_opt + dst_i420_y_size, (dst_width + 1) / 2,
+                     dst_i420_opt + dst_i420_y_size + dst_i420_uv_size,
+                       (dst_width + 1) / 2,
+                     src_width, src_height, mode);
+  }
+
+  // Rotation should be exact.
+  for (int i = 0; i < dst_i420_size; ++i) {
+    EXPECT_EQ(dst_i420_c[i], dst_i420_opt[i]);
+  }
+
+  free_aligned_buffer_64(dst_i420_c);
+  free_aligned_buffer_64(dst_i420_opt);
+  free_aligned_buffer_64(src_nv12);
+}
+
+TEST_F(libyuvTest, NV12Rotate0) {
+  NV12TestRotate(benchmark_width_, benchmark_height_,
+                 benchmark_width_, benchmark_height_,
+                 kRotate0, benchmark_iterations_);
+}
+
+TEST_F(libyuvTest, NV12Rotate90) {
+  NV12TestRotate(benchmark_width_, benchmark_height_,
+                 benchmark_height_, benchmark_width_,
+                 kRotate90, benchmark_iterations_);
+}
+
+TEST_F(libyuvTest, NV12Rotate180) {
+  NV12TestRotate(benchmark_width_, benchmark_height_,
+                 benchmark_width_, benchmark_height_,
+                 kRotate180, benchmark_iterations_);
+}
+
+TEST_F(libyuvTest, NV12Rotate270) {
+  NV12TestRotate(benchmark_width_, benchmark_height_,
+                 benchmark_height_, benchmark_width_,
+                 kRotate270, benchmark_iterations_);
+}
+
+TEST_F(libyuvTest, NV12Rotate0_Odd) {
+  NV12TestRotate(benchmark_width_ - 3, benchmark_height_ - 1,
+                 benchmark_width_ - 3, benchmark_height_ - 1,
+                 kRotate0, benchmark_iterations_);
+}
+
+TEST_F(libyuvTest, NV12Rotate90_Odd) {
+  NV12TestRotate(benchmark_width_ - 3, benchmark_height_ - 1,
+                 benchmark_height_ - 1, benchmark_width_ - 3,
+                 kRotate90, benchmark_iterations_);
+}
+
+TEST_F(libyuvTest, NV12Rotate180_Odd) {
+  NV12TestRotate(benchmark_width_ - 3, benchmark_height_ - 1,
+                 benchmark_width_ - 3, benchmark_height_ - 1,
+                 kRotate180, benchmark_iterations_);
+}
+
+TEST_F(libyuvTest, NV12Rotate270_Odd) {
+  NV12TestRotate(benchmark_width_ - 3, benchmark_height_ - 1,
+                 benchmark_height_ - 1, benchmark_width_ - 3,
+                 kRotate270, benchmark_iterations_);
+}
+
+}  // namespace libyuv