libvpx: Pull from upstream

source/libvpx/test/vp9_denoiser_sse2_test.cc

Index: source/libvpx/test/vp9_denoiser_sse2_test.cc
===================================================================
--- source/libvpx/test/vp9_denoiser_sse2_test.cc	(revision 0)
+++ source/libvpx/test/vp9_denoiser_sse2_test.cc	(working copy)
@@ -0,0 +1,101 @@
+/*
+ *  Copyright (c) 2014 The WebM 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 <math.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "third_party/googletest/src/include/gtest/gtest.h"
+#include "test/acm_random.h"
+#include "test/clear_system_state.h"
+#include "test/register_state_check.h"
+#include "test/util.h"
+
+#include "vpx_scale/yv12config.h"
+#include "vpx/vpx_integer.h"
+#include "vp9/common/vp9_reconinter.h"
+#include "vp9/encoder/vp9_context_tree.h"
+#include "vp9/encoder/vp9_denoiser.h"
+
+using libvpx_test::ACMRandom;
+
+namespace {
+
+const int kNumPixels = 64 * 64;
+class VP9DenoiserTest : public ::testing::TestWithParam<BLOCK_SIZE> {
+ public:
+  virtual ~VP9DenoiserTest() {}
+
+  virtual void SetUp() {
+    bs_ = GetParam();
+  }
+
+  virtual void TearDown() { libvpx_test::ClearSystemState(); }
+
+ protected:
+  BLOCK_SIZE bs_;
+};
+
+TEST_P(VP9DenoiserTest, BitexactCheck) {
+  ACMRandom rnd(ACMRandom::DeterministicSeed());
+  const int count_test_block = 4000;
+
+  // Allocate the space for input and output,
+  // where sig_block is the block to be denoised,
+  // mc_avg_block is the denoised reference block,
+  // avg_block_c is the denoised result from C code,
+  // avg_block_sse2 is the denoised result from SSE2 code.
+  DECLARE_ALIGNED_ARRAY(16, uint8_t, sig_block, kNumPixels);
+  DECLARE_ALIGNED_ARRAY(16, uint8_t, mc_avg_block, kNumPixels);
+  DECLARE_ALIGNED_ARRAY(16, uint8_t, avg_block_c, kNumPixels);
+  DECLARE_ALIGNED_ARRAY(16, uint8_t, avg_block_sse2, kNumPixels);
+
+  for (int i = 0; i < count_test_block; ++i) {
+    // Generate random motion magnitude, 20% of which exceed the threshold.
+    const int motion_magnitude_random =
+        rnd.Rand8() % static_cast<int>(MOTION_MAGNITUDE_THRESHOLD * 1.2);
+
+    // Initialize a test block with random number in range [0, 255].
+    for (int j = 0; j < kNumPixels; ++j) {
+      int temp = 0;
+      sig_block[j] = rnd.Rand8();
+      // The pixels in mc_avg_block are generated by adding a random
+      // number in range [-19, 19] to corresponding pixels in sig_block.
+      temp = sig_block[j] + ((rnd.Rand8() % 2 == 0) ? -1 : 1) *
+             (rnd.Rand8() % 20);
+      // Clip.
+      mc_avg_block[j] = (temp < 0) ? 0 : ((temp > 255) ? 255 : temp);
+    }
+
+    ASM_REGISTER_STATE_CHECK(vp9_denoiser_filter_c(
+        sig_block, 64, mc_avg_block, 64, avg_block_c,
+        64, 0, bs_, motion_magnitude_random));
+
+    ASM_REGISTER_STATE_CHECK(vp9_denoiser_filter_sse2(
+        sig_block, 64, mc_avg_block, 64, avg_block_sse2,
+        64, 0, bs_, motion_magnitude_random));
+
+    // Test bitexactness.
+    for (int h = 0; h < (4 << b_height_log2_lookup[bs_]); ++h) {
+      for (int w = 0; w < (4 << b_width_log2_lookup[bs_]); ++w) {
+        EXPECT_EQ(avg_block_c[h * 64 + w], avg_block_sse2[h * 64 + w]);
+      }
+    }
+  }
+}
+
+// Test for all block size.
+INSTANTIATE_TEST_CASE_P(
+    SSE2, VP9DenoiserTest,
+    ::testing::Values(BLOCK_4X4, BLOCK_4X8, BLOCK_8X4, BLOCK_8X8,
+                      BLOCK_8X16, BLOCK_16X8, BLOCK_16X16, BLOCK_16X32,
+                      BLOCK_32X16, BLOCK_32X32, BLOCK_32X64, BLOCK_64X32,
+                      BLOCK_64X64));
+}  // namespace