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 "vp8/encoder/denoising.h"
22 #include "vp8/common/reconinter.h"
23 #include "vpx/vpx_integer.h"
24 #include "vpx_mem/vpx_mem.h"
25
26 using libvpx_test::ACMRandom;
27
28 namespace {
29
30 const int kNumPixels = 16 * 16;
31 class VP8DenoiserTest : public ::testing::TestWithParam<int> {
32 public:
33 ~VP8DenoiserTest() override = default;
34
SetUp()35 void SetUp() override { increase_denoising_ = GetParam(); }
36
TearDown()37 void TearDown() override { libvpx_test::ClearSystemState(); }
38
39 protected:
40 int increase_denoising_;
41 };
42
43 // TODO(https://crbug.com/webm/1718): This test fails with gcc 8-10.
44 #if defined(__GNUC__) && __GNUC__ >= 8
TEST_P(VP8DenoiserTest,DISABLED_BitexactCheck)45 TEST_P(VP8DenoiserTest, DISABLED_BitexactCheck) {
46 #else
47 TEST_P(VP8DenoiserTest, BitexactCheck) {
48 #endif
49 ACMRandom rnd(ACMRandom::DeterministicSeed());
50 const int count_test_block = 4000;
51 const int stride = 16;
52
53 // Allocate the space for input and output,
54 // where sig_block_c/_sse2 is the block to be denoised,
55 // mc_avg_block is the denoised reference block,
56 // avg_block_c is the denoised result from C code,
57 // avg_block_sse2 is the denoised result from SSE2 code.
58 DECLARE_ALIGNED(16, uint8_t, sig_block_c[kNumPixels]);
59 // Since in VP8 denoiser, the source signal will be changed,
60 // we need another copy of the source signal as the input of sse2 code.
61 DECLARE_ALIGNED(16, uint8_t, sig_block_sse2[kNumPixels]);
62 DECLARE_ALIGNED(16, uint8_t, mc_avg_block[kNumPixels]);
63 DECLARE_ALIGNED(16, uint8_t, avg_block_c[kNumPixels]);
64 DECLARE_ALIGNED(16, uint8_t, avg_block_sse2[kNumPixels]);
65
66 for (int i = 0; i < count_test_block; ++i) {
67 // Generate random motion magnitude, 20% of which exceed the threshold.
68 const int motion_magnitude_ran =
69 rnd.Rand8() % static_cast<int>(MOTION_MAGNITUDE_THRESHOLD * 1.2);
70
71 // Initialize a test block with random number in range [0, 255].
72 for (int j = 0; j < kNumPixels; ++j) {
73 int temp = 0;
74 sig_block_sse2[j] = sig_block_c[j] = rnd.Rand8();
75 // The pixels in mc_avg_block are generated by adding a random
76 // number in range [-19, 19] to corresponding pixels in sig_block.
77 temp =
78 sig_block_c[j] + (rnd.Rand8() % 2 == 0 ? -1 : 1) * (rnd.Rand8() % 20);
79 // Clip.
80 mc_avg_block[j] = (temp < 0) ? 0 : ((temp > 255) ? 255 : temp);
81 }
82
83 // Test denosiser on Y component.
84 ASM_REGISTER_STATE_CHECK(vp8_denoiser_filter_c(
85 mc_avg_block, stride, avg_block_c, stride, sig_block_c, stride,
86 motion_magnitude_ran, increase_denoising_));
87
88 ASM_REGISTER_STATE_CHECK(vp8_denoiser_filter_sse2(
89 mc_avg_block, stride, avg_block_sse2, stride, sig_block_sse2, stride,
90 motion_magnitude_ran, increase_denoising_));
91
92 // Check bitexactness.
93 for (int h = 0; h < 16; ++h) {
94 for (int w = 0; w < 16; ++w) {
95 ASSERT_EQ(avg_block_c[h * stride + w], avg_block_sse2[h * stride + w]);
96 }
97 }
98
99 // Test denoiser on UV component.
100 ASM_REGISTER_STATE_CHECK(vp8_denoiser_filter_uv_c(
101 mc_avg_block, stride, avg_block_c, stride, sig_block_c, stride,
102 motion_magnitude_ran, increase_denoising_));
103
104 ASM_REGISTER_STATE_CHECK(vp8_denoiser_filter_uv_sse2(
105 mc_avg_block, stride, avg_block_sse2, stride, sig_block_sse2, stride,
106 motion_magnitude_ran, increase_denoising_));
107
108 // Check bitexactness.
109 for (int h = 0; h < 16; ++h) {
110 for (int w = 0; w < 16; ++w) {
111 ASSERT_EQ(avg_block_c[h * stride + w], avg_block_sse2[h * stride + w]);
112 }
113 }
114 }
115 }
116
117 // Test for all block size.
118 INSTANTIATE_TEST_SUITE_P(SSE2, VP8DenoiserTest, ::testing::Values(0, 1));
119 } // namespace
120