1 /*
2 * Copyright (c) 2021, Alliance for Open Media. All rights reserved.
3 *
4 * This source code is subject to the terms of the BSD 2 Clause License and
5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
6 * was not distributed with this source code in the LICENSE file, you can
7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
8 * Media Patent License 1.0 was not distributed with this source code in the
9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
10 */
11
12 #include "aom_ports/mem.h"
13 #include "aom_dsp/ssim.h"
14 #include "av1/common/blockd.h"
15 #include "gtest/gtest.h"
16 #include "test/codec_factory.h"
17 #include "test/encode_test_driver.h"
18 #include "test/util.h"
19 #include "test/y4m_video_source.h"
20
21 namespace {
22
23 const unsigned int kFrames = 10;
24 const unsigned int kCqLevel = 18;
25 // List of ssim thresholds for speed settings 0-8 with all intra encoding mode.
26 const double kSsimThreshold[] = { 83.4, 83.4, 83.4, 83.3, 83.3,
27 83.0, 82.3, 81.1, 81.1 };
28
29 typedef struct {
30 const char *filename;
31 unsigned int input_bit_depth;
32 aom_img_fmt fmt;
33 aom_bit_depth_t bit_depth;
34 unsigned int profile;
35 } TestVideoParam;
36
operator <<(std::ostream & os,const TestVideoParam & test_arg)37 std::ostream &operator<<(std::ostream &os, const TestVideoParam &test_arg) {
38 return os << "TestVideoParam { filename:" << test_arg.filename
39 << " input_bit_depth:" << test_arg.input_bit_depth
40 << " fmt:" << test_arg.fmt << " bit_depth:" << test_arg.bit_depth
41 << " profile:" << test_arg.profile << " }";
42 }
43
44 const TestVideoParam kTestVectors[] = {
45 { "park_joy_90p_8_420.y4m", 8, AOM_IMG_FMT_I420, AOM_BITS_8, 0 },
46 { "park_joy_90p_8_422.y4m", 8, AOM_IMG_FMT_I422, AOM_BITS_8, 2 },
47 { "park_joy_90p_8_444.y4m", 8, AOM_IMG_FMT_I444, AOM_BITS_8, 1 },
48 #if CONFIG_AV1_HIGHBITDEPTH
49 { "park_joy_90p_10_420.y4m", 10, AOM_IMG_FMT_I42016, AOM_BITS_10, 0 },
50 { "park_joy_90p_10_422.y4m", 10, AOM_IMG_FMT_I42216, AOM_BITS_10, 2 },
51 { "park_joy_90p_10_444.y4m", 10, AOM_IMG_FMT_I44416, AOM_BITS_10, 1 },
52 { "park_joy_90p_12_420.y4m", 12, AOM_IMG_FMT_I42016, AOM_BITS_12, 2 },
53 { "park_joy_90p_12_422.y4m", 12, AOM_IMG_FMT_I42216, AOM_BITS_12, 2 },
54 { "park_joy_90p_12_444.y4m", 12, AOM_IMG_FMT_I44416, AOM_BITS_12, 2 },
55 #endif
56 };
57
58 // This class is used to check adherence to given ssim value.
59 class EndToEndSSIMTest
60 : public ::libaom_test::CodecTestWith3Params<libaom_test::TestMode,
61 TestVideoParam, int>,
62 public ::libaom_test::EncoderTest {
63 protected:
EndToEndSSIMTest()64 EndToEndSSIMTest()
65 : EncoderTest(GET_PARAM(0)), encoding_mode_(GET_PARAM(1)),
66 test_video_param_(GET_PARAM(2)), cpu_used_(GET_PARAM(3)), nframes_(0),
67 ssim_(0.0) {}
68
69 ~EndToEndSSIMTest() override = default;
70
SetUp()71 void SetUp() override { InitializeConfig(encoding_mode_); }
72
BeginPassHook(unsigned int)73 void BeginPassHook(unsigned int) override {
74 nframes_ = 0;
75 ssim_ = 0.0;
76 }
77
CalculateFrameLevelSSIM(const aom_image_t * img_src,const aom_image_t * img_enc,aom_bit_depth_t bit_depth,unsigned int input_bit_depth)78 void CalculateFrameLevelSSIM(const aom_image_t *img_src,
79 const aom_image_t *img_enc,
80 aom_bit_depth_t bit_depth,
81 unsigned int input_bit_depth) override {
82 double frame_ssim;
83 double plane_ssim[MAX_MB_PLANE] = { 0.0, 0.0, 0.0 };
84 int crop_widths[PLANE_TYPES];
85 int crop_heights[PLANE_TYPES];
86 crop_widths[PLANE_TYPE_Y] = img_src->d_w;
87 crop_heights[PLANE_TYPE_Y] = img_src->d_h;
88 // Width of UV planes calculated based on chroma_shift values.
89 crop_widths[PLANE_TYPE_UV] =
90 img_src->x_chroma_shift == 1 ? (img_src->w + 1) >> 1 : img_src->w;
91 crop_heights[PLANE_TYPE_UV] =
92 img_src->y_chroma_shift == 1 ? (img_src->h + 1) >> 1 : img_src->h;
93 nframes_++;
94
95 #if CONFIG_AV1_HIGHBITDEPTH
96 uint8_t is_hbd = bit_depth > AOM_BITS_8;
97 if (is_hbd) {
98 // HBD ssim calculation.
99 uint8_t shift = bit_depth - input_bit_depth;
100 for (int i = AOM_PLANE_Y; i < MAX_MB_PLANE; ++i) {
101 const int is_uv = i > AOM_PLANE_Y;
102 plane_ssim[i] = aom_highbd_ssim2(
103 CONVERT_TO_BYTEPTR(img_src->planes[i]),
104 CONVERT_TO_BYTEPTR(img_enc->planes[i]),
105 img_src->stride[is_uv] >> is_hbd, img_enc->stride[is_uv] >> is_hbd,
106 crop_widths[is_uv], crop_heights[is_uv], input_bit_depth, shift);
107 }
108 frame_ssim = plane_ssim[AOM_PLANE_Y] * .8 +
109 .1 * (plane_ssim[AOM_PLANE_U] + plane_ssim[AOM_PLANE_V]);
110 // Accumulate to find sequence level ssim value.
111 ssim_ += frame_ssim;
112 return;
113 }
114 #else
115 (void)bit_depth;
116 (void)input_bit_depth;
117 #endif // CONFIG_AV1_HIGHBITDEPTH
118
119 // LBD ssim calculation.
120 for (int i = AOM_PLANE_Y; i < MAX_MB_PLANE; ++i) {
121 const int is_uv = i > AOM_PLANE_Y;
122 plane_ssim[i] = aom_ssim2(img_src->planes[i], img_enc->planes[i],
123 img_src->stride[is_uv], img_enc->stride[is_uv],
124 crop_widths[is_uv], crop_heights[is_uv]);
125 }
126 frame_ssim = plane_ssim[AOM_PLANE_Y] * .8 +
127 .1 * (plane_ssim[AOM_PLANE_U] + plane_ssim[AOM_PLANE_V]);
128 // Accumulate to find sequence level ssim value.
129 ssim_ += frame_ssim;
130 }
131
PreEncodeFrameHook(::libaom_test::VideoSource * video,::libaom_test::Encoder * encoder)132 void PreEncodeFrameHook(::libaom_test::VideoSource *video,
133 ::libaom_test::Encoder *encoder) override {
134 if (video->frame() == 0) {
135 encoder->Control(AV1E_SET_FRAME_PARALLEL_DECODING, 1);
136 encoder->Control(AV1E_SET_TILE_COLUMNS, 4);
137 encoder->Control(AOME_SET_CPUUSED, cpu_used_);
138 encoder->Control(AOME_SET_TUNING, AOM_TUNE_SSIM);
139 encoder->Control(AOME_SET_CQ_LEVEL, kCqLevel);
140 }
141 }
142
GetAverageSsim() const143 double GetAverageSsim() const {
144 if (nframes_) return 100 * pow(ssim_ / nframes_, 8.0);
145 return 0.0;
146 }
147
GetSsimThreshold()148 double GetSsimThreshold() { return kSsimThreshold[cpu_used_]; }
149
DoTest()150 void DoTest() {
151 cfg_.g_profile = test_video_param_.profile;
152 cfg_.g_input_bit_depth = test_video_param_.input_bit_depth;
153 cfg_.g_bit_depth = test_video_param_.bit_depth;
154 if (cfg_.g_bit_depth > 8) init_flags_ |= AOM_CODEC_USE_HIGHBITDEPTH;
155
156 std::unique_ptr<libaom_test::VideoSource> video(
157 new libaom_test::Y4mVideoSource(test_video_param_.filename, 0,
158 kFrames));
159 ASSERT_NE(video, nullptr);
160 ASSERT_NO_FATAL_FAILURE(RunLoop(video.get()));
161 const double ssim = GetAverageSsim();
162 EXPECT_GT(ssim, GetSsimThreshold())
163 << "encoding mode = " << encoding_mode_ << ", cpu used = " << cpu_used_;
164 }
165
166 private:
167 const libaom_test::TestMode encoding_mode_;
168 const TestVideoParam test_video_param_;
169 const int cpu_used_;
170 unsigned int nframes_;
171 double ssim_;
172 };
173
174 class EndToEndSSIMTestLarge : public EndToEndSSIMTest {};
175
TEST_P(EndToEndSSIMTestLarge,EndtoEndSSIMTest)176 TEST_P(EndToEndSSIMTestLarge, EndtoEndSSIMTest) { DoTest(); }
177
TEST_P(EndToEndSSIMTest,EndtoEndSSIMTest)178 TEST_P(EndToEndSSIMTest, EndtoEndSSIMTest) { DoTest(); }
179
180 AV1_INSTANTIATE_TEST_SUITE(EndToEndSSIMTestLarge,
181 ::testing::Values(::libaom_test::kAllIntra),
182 ::testing::ValuesIn(kTestVectors),
183 ::testing::Values(2, 4, 6, 8)); // cpu_used
184
185 AV1_INSTANTIATE_TEST_SUITE(EndToEndSSIMTest,
186 ::testing::Values(::libaom_test::kAllIntra),
187 ::testing::Values(kTestVectors[0]), // 420
188 ::testing::Values(6)); // cpu_used
189 } // namespace
190