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 "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_config.h"
25 #include "vpx_mem/vpx_mem.h"
26
27 using libvpx_test::ACMRandom;
28
29 namespace {
30
31 const int kNumPixels = 16 * 16;
32 class VP8DenoiserTest : public ::testing::TestWithParam<int> {
33 public:
34 ~VP8DenoiserTest() override = default;
35
SetUp()36 void SetUp() override { increase_denoising_ = GetParam(); }
37
TearDown()38 void TearDown() override { libvpx_test::ClearSystemState(); }
39
40 protected:
41 int increase_denoising_;
42 };
43
44 // TODO(https://crbug.com/webm/1718): This test fails with gcc 8-10.
45 #if defined(__GNUC__) && __GNUC__ >= 8
TEST_P(VP8DenoiserTest,DISABLED_BitexactCheck)46 TEST_P(VP8DenoiserTest, DISABLED_BitexactCheck) {
47 #else
48 TEST_P(VP8DenoiserTest, BitexactCheck) {
49 #endif
50 ACMRandom rnd(ACMRandom::DeterministicSeed());
51 const int count_test_block = 4000;
52 const int stride = 16;
53
54 // Allocate the space for input and output,
55 // where sig_block_c/_sse2 is the block to be denoised,
56 // mc_avg_block is the denoised reference block,
57 // avg_block_c is the denoised result from C code,
58 // avg_block_sse2 is the denoised result from SSE2 code.
59 DECLARE_ALIGNED(16, uint8_t, sig_block_c[kNumPixels]);
60 // Since in VP8 denoiser, the source signal will be changed,
61 // we need another copy of the source signal as the input of sse2 code.
62 DECLARE_ALIGNED(16, uint8_t, sig_block_sse2[kNumPixels]);
63 DECLARE_ALIGNED(16, uint8_t, mc_avg_block[kNumPixels]);
64 DECLARE_ALIGNED(16, uint8_t, avg_block_c[kNumPixels]);
65 DECLARE_ALIGNED(16, uint8_t, avg_block_sse2[kNumPixels]);
66
67 for (int i = 0; i < count_test_block; ++i) {
68 // Generate random motion magnitude, 20% of which exceed the threshold.
69 const int motion_magnitude_ran =
70 rnd.Rand8() % static_cast<int>(MOTION_MAGNITUDE_THRESHOLD * 1.2);
71
72 // Initialize a test block with random number in range [0, 255].
73 for (int j = 0; j < kNumPixels; ++j) {
74 int temp = 0;
75 sig_block_sse2[j] = sig_block_c[j] = rnd.Rand8();
76 // The pixels in mc_avg_block are generated by adding a random
77 // number in range [-19, 19] to corresponding pixels in sig_block.
78 temp =
79 sig_block_c[j] + (rnd.Rand8() % 2 == 0 ? -1 : 1) * (rnd.Rand8() % 20);
80 // Clip.
81 mc_avg_block[j] = (temp < 0) ? 0 : ((temp > 255) ? 255 : temp);
82 }
83
84 // Test denosiser on Y component.
85 ASM_REGISTER_STATE_CHECK(vp8_denoiser_filter_c(
86 mc_avg_block, stride, avg_block_c, stride, sig_block_c, stride,
87 motion_magnitude_ran, increase_denoising_));
88
89 ASM_REGISTER_STATE_CHECK(vp8_denoiser_filter_sse2(
90 mc_avg_block, stride, avg_block_sse2, stride, sig_block_sse2, stride,
91 motion_magnitude_ran, increase_denoising_));
92
93 // Check bitexactness.
94 for (int h = 0; h < 16; ++h) {
95 for (int w = 0; w < 16; ++w) {
96 ASSERT_EQ(avg_block_c[h * stride + w], avg_block_sse2[h * stride + w]);
97 }
98 }
99
100 // Test denoiser on UV component.
101 ASM_REGISTER_STATE_CHECK(vp8_denoiser_filter_uv_c(
102 mc_avg_block, stride, avg_block_c, stride, sig_block_c, stride,
103 motion_magnitude_ran, increase_denoising_));
104
105 ASM_REGISTER_STATE_CHECK(vp8_denoiser_filter_uv_sse2(
106 mc_avg_block, stride, avg_block_sse2, stride, sig_block_sse2, stride,
107 motion_magnitude_ran, increase_denoising_));
108
109 // Check bitexactness.
110 for (int h = 0; h < 16; ++h) {
111 for (int w = 0; w < 16; ++w) {
112 ASSERT_EQ(avg_block_c[h * stride + w], avg_block_sse2[h * stride + w]);
113 }
114 }
115 }
116 }
117
118 // Test for all block size.
119 INSTANTIATE_TEST_SUITE_P(SSE2, VP8DenoiserTest, ::testing::Values(0, 1));
120 } // namespace
121