1/*
2 *  Copyright (c) 2014 The WebM project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#include <math.h>
12#include <stdlib.h>
13#include <string.h>
14
15#include "third_party/googletest/src/include/gtest/gtest.h"
16#include "test/acm_random.h"
17#include "test/clear_system_state.h"
18#include "test/register_state_check.h"
19#include "test/util.h"
20
21#include "vpx_scale/yv12config.h"
22#include "vpx/vpx_integer.h"
23#include "vp9/common/vp9_reconinter.h"
24#include "vp9/encoder/vp9_context_tree.h"
25#include "vp9/encoder/vp9_denoiser.h"
26
27using libvpx_test::ACMRandom;
28
29namespace {
30
31const int kNumPixels = 64 * 64;
32class VP9DenoiserTest : public ::testing::TestWithParam<BLOCK_SIZE> {
33 public:
34  virtual ~VP9DenoiserTest() {}
35
36  virtual void SetUp() {
37    bs_ = GetParam();
38  }
39
40  virtual void TearDown() { libvpx_test::ClearSystemState(); }
41
42 protected:
43  BLOCK_SIZE bs_;
44};
45
46TEST_P(VP9DenoiserTest, BitexactCheck) {
47  ACMRandom rnd(ACMRandom::DeterministicSeed());
48  const int count_test_block = 4000;
49
50  // Allocate the space for input and output,
51  // where sig_block is the block to be denoised,
52  // mc_avg_block is the denoised reference block,
53  // avg_block_c is the denoised result from C code,
54  // avg_block_sse2 is the denoised result from SSE2 code.
55  DECLARE_ALIGNED(16, uint8_t, sig_block[kNumPixels]);
56  DECLARE_ALIGNED(16, uint8_t, mc_avg_block[kNumPixels]);
57  DECLARE_ALIGNED(16, uint8_t, avg_block_c[kNumPixels]);
58  DECLARE_ALIGNED(16, uint8_t, avg_block_sse2[kNumPixels]);
59
60  for (int i = 0; i < count_test_block; ++i) {
61    // Generate random motion magnitude, 20% of which exceed the threshold.
62    const int motion_magnitude_random =
63        rnd.Rand8() % static_cast<int>(MOTION_MAGNITUDE_THRESHOLD * 1.2);
64
65    // Initialize a test block with random number in range [0, 255].
66    for (int j = 0; j < kNumPixels; ++j) {
67      int temp = 0;
68      sig_block[j] = rnd.Rand8();
69      // The pixels in mc_avg_block are generated by adding a random
70      // number in range [-19, 19] to corresponding pixels in sig_block.
71      temp = sig_block[j] + ((rnd.Rand8() % 2 == 0) ? -1 : 1) *
72             (rnd.Rand8() % 20);
73      // Clip.
74      mc_avg_block[j] = (temp < 0) ? 0 : ((temp > 255) ? 255 : temp);
75    }
76
77    ASM_REGISTER_STATE_CHECK(vp9_denoiser_filter_c(
78        sig_block, 64, mc_avg_block, 64, avg_block_c,
79        64, 0, bs_, motion_magnitude_random));
80
81    ASM_REGISTER_STATE_CHECK(vp9_denoiser_filter_sse2(
82        sig_block, 64, mc_avg_block, 64, avg_block_sse2,
83        64, 0, bs_, motion_magnitude_random));
84
85    // Test bitexactness.
86    for (int h = 0; h < (4 << b_height_log2_lookup[bs_]); ++h) {
87      for (int w = 0; w < (4 << b_width_log2_lookup[bs_]); ++w) {
88        EXPECT_EQ(avg_block_c[h * 64 + w], avg_block_sse2[h * 64 + w]);
89      }
90    }
91  }
92}
93
94// Test for all block size.
95INSTANTIATE_TEST_CASE_P(
96    SSE2, VP9DenoiserTest,
97    ::testing::Values(BLOCK_4X4, BLOCK_4X8, BLOCK_8X4, BLOCK_8X8,
98                      BLOCK_8X16, BLOCK_16X8, BLOCK_16X16, BLOCK_16X32,
99                      BLOCK_32X16, BLOCK_32X32, BLOCK_32X64, BLOCK_64X32,
100                      BLOCK_64X64));
101}  // namespace
102