1 /*
2 * Copyright (c) 2016, 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 <climits>
13 #include <vector>
14 #include "gtest/gtest.h"
15 #include "test/codec_factory.h"
16 #include "test/encode_test_driver.h"
17 #include "test/i420_video_source.h"
18 #include "test/video_source.h"
19 #include "test/util.h"
20
21 namespace {
22
23 const unsigned int kCqLevel = 18;
24 const double kMaxPsnr = 100.0;
25
26 // kPsnrThreshold represents the psnr threshold used to validate the quality of
27 // the first frame. The indices correspond to one/two-pass, allintra and
28 // realtime encoding modes.
29 const double kPsnrThreshold[3] = { 29.0, 41.5, 41.5 };
30
31 // kPsnrFluctuation represents the maximum allowed psnr fluctuation w.r.t first
32 // frame. The indices correspond to one/two-pass, allintra and realtime
33 // encoding modes.
34 const double kPsnrFluctuation[3] = { 2.5, 0.3, 17.0 };
35
36 class MonochromeTest
37 : public ::libaom_test::CodecTestWith3Params<libaom_test::TestMode, int,
38 int>,
39 public ::libaom_test::EncoderTest {
40 protected:
MonochromeTest()41 MonochromeTest()
42 : EncoderTest(GET_PARAM(0)), lossless_(GET_PARAM(2)),
43 frame0_psnr_y_(0.0) {}
44
45 ~MonochromeTest() override = default;
46
SetUp()47 void SetUp() override { InitializeConfig(GET_PARAM(1)); }
48
PreEncodeFrameHook(::libaom_test::VideoSource * video,::libaom_test::Encoder * encoder)49 void PreEncodeFrameHook(::libaom_test::VideoSource *video,
50 ::libaom_test::Encoder *encoder) override {
51 if (video->frame() == 0) {
52 encoder->Control(AOME_SET_CPUUSED, GET_PARAM(3));
53 if (mode_ == ::libaom_test::kAllIntra) {
54 encoder->Control(AOME_SET_CQ_LEVEL, kCqLevel);
55 }
56 if (lossless_) {
57 encoder->Control(AV1E_SET_LOSSLESS, 1);
58 }
59 }
60 }
61
DecompressedFrameHook(const aom_image_t & img,aom_codec_pts_t pts)62 void DecompressedFrameHook(const aom_image_t &img,
63 aom_codec_pts_t pts) override {
64 (void)pts;
65
66 // Get value of top-left corner pixel of U plane
67 int chroma_value = img.planes[AOM_PLANE_U][0];
68
69 bool is_chroma_constant =
70 ComparePlaneToValue(img, AOM_PLANE_U, chroma_value) &&
71 ComparePlaneToValue(img, AOM_PLANE_V, chroma_value);
72
73 // Chroma planes should be constant
74 EXPECT_TRUE(is_chroma_constant);
75
76 // Monochrome flag on image should be set
77 EXPECT_EQ(img.monochrome, 1);
78
79 chroma_value_list_.push_back(chroma_value);
80 }
81
82 // Returns true if all pixels on the plane are equal to value, and returns
83 // false otherwise.
ComparePlaneToValue(const aom_image_t & img,const int plane,const int value)84 bool ComparePlaneToValue(const aom_image_t &img, const int plane,
85 const int value) {
86 const int w = aom_img_plane_width(&img, plane);
87 const int h = aom_img_plane_height(&img, plane);
88 const uint8_t *const buf = img.planes[plane];
89 const int stride = img.stride[plane];
90
91 for (int r = 0; r < h; ++r) {
92 for (int c = 0; c < w; ++c) {
93 if (buf[r * stride + c] != value) return false;
94 }
95 }
96 return true;
97 }
98
PSNRPktHook(const aom_codec_cx_pkt_t * pkt)99 void PSNRPktHook(const aom_codec_cx_pkt_t *pkt) override {
100 // Check average PSNR value is >= 100 db in case of lossless encoding.
101 if (lossless_) {
102 EXPECT_GE(pkt->data.psnr.psnr[0], kMaxPsnr);
103 return;
104 }
105 const int psnr_index = (mode_ == ::libaom_test::kRealTime) ? 2
106 : (mode_ == ::libaom_test::kAllIntra) ? 1
107 : 0;
108 // Check that the initial Y PSNR value is 'high enough', and check that
109 // subsequent Y PSNR values are 'close' to this initial value.
110 if (frame0_psnr_y_ == 0.0) {
111 frame0_psnr_y_ = pkt->data.psnr.psnr[1];
112 EXPECT_GT(frame0_psnr_y_, kPsnrThreshold[psnr_index]);
113 }
114 EXPECT_NEAR(pkt->data.psnr.psnr[1], frame0_psnr_y_,
115 kPsnrFluctuation[psnr_index]);
116 }
117
118 int lossless_;
119 std::vector<int> chroma_value_list_;
120 double frame0_psnr_y_;
121 };
122
TEST_P(MonochromeTest,TestMonochromeEncoding)123 TEST_P(MonochromeTest, TestMonochromeEncoding) {
124 ::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
125 30, 1, 0, 5);
126
127 init_flags_ = AOM_CODEC_USE_PSNR;
128
129 cfg_.rc_buf_initial_sz = 500;
130 cfg_.rc_buf_optimal_sz = 600;
131 cfg_.rc_buf_sz = 1000;
132 cfg_.rc_min_quantizer = 2;
133 cfg_.rc_max_quantizer = 56;
134 cfg_.rc_undershoot_pct = 50;
135 cfg_.rc_overshoot_pct = 50;
136 cfg_.rc_end_usage = AOM_CBR;
137 cfg_.g_lag_in_frames = 1;
138 cfg_.kf_min_dist = cfg_.kf_max_dist = 3000;
139 // Enable dropped frames.
140 cfg_.rc_dropframe_thresh = 1;
141 // Run at low bitrate.
142 cfg_.rc_target_bitrate = 40;
143 // Set monochrome encoding flag
144 cfg_.monochrome = 1;
145
146 ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
147
148 // Check that the chroma planes are equal across all frames
149 std::vector<int>::const_iterator iter = chroma_value_list_.begin();
150 int initial_chroma_value = *iter;
151 for (; iter != chroma_value_list_.end(); ++iter) {
152 // Check that all decoded frames have the same constant chroma planes.
153 EXPECT_EQ(*iter, initial_chroma_value);
154 }
155 }
156
157 class MonochromeAllIntraTest : public MonochromeTest {};
158
TEST_P(MonochromeAllIntraTest,TestMonochromeEncoding)159 TEST_P(MonochromeAllIntraTest, TestMonochromeEncoding) {
160 ::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
161 30, 1, 0, 5);
162 init_flags_ = AOM_CODEC_USE_PSNR;
163 // Set monochrome encoding flag
164 cfg_.monochrome = 1;
165 ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
166
167 // Check that the chroma planes are equal across all frames
168 std::vector<int>::const_iterator iter = chroma_value_list_.begin();
169 int initial_chroma_value = *iter;
170 for (; iter != chroma_value_list_.end(); ++iter) {
171 // Check that all decoded frames have the same constant chroma planes.
172 EXPECT_EQ(*iter, initial_chroma_value);
173 }
174 }
175
176 class MonochromeRealtimeTest : public MonochromeTest {};
177
TEST_P(MonochromeRealtimeTest,TestMonochromeEncoding)178 TEST_P(MonochromeRealtimeTest, TestMonochromeEncoding) {
179 ::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
180 30, 1, 0, 30);
181 init_flags_ = AOM_CODEC_USE_PSNR;
182 // Set monochrome encoding flag
183 cfg_.monochrome = 1;
184 // Run at low bitrate.
185 cfg_.rc_target_bitrate = 40;
186 cfg_.rc_buf_sz = 6000;
187 cfg_.rc_buf_initial_sz = 4000;
188 cfg_.rc_buf_optimal_sz = 5000;
189 ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
190
191 // Check that the chroma planes are equal across all frames
192 std::vector<int>::const_iterator iter = chroma_value_list_.begin();
193 int initial_chroma_value = *iter;
194 for (; iter != chroma_value_list_.end(); ++iter) {
195 // Check that all decoded frames have the same constant chroma planes.
196 EXPECT_EQ(*iter, initial_chroma_value);
197 }
198 }
199
200 AV1_INSTANTIATE_TEST_SUITE(MonochromeTest,
201 ::testing::Values(::libaom_test::kOnePassGood,
202 ::libaom_test::kTwoPassGood),
203 ::testing::Values(0), // lossless
204 ::testing::Values(0)); // cpu_used
205
206 AV1_INSTANTIATE_TEST_SUITE(MonochromeAllIntraTest,
207 ::testing::Values(::libaom_test::kAllIntra),
208 ::testing::Values(0, 1), // lossless
209 ::testing::Values(6, 9)); // cpu_used
210
211 AV1_INSTANTIATE_TEST_SUITE(MonochromeRealtimeTest,
212 ::testing::Values(::libaom_test::kRealTime),
213 ::testing::Values(0), // lossless
214 ::testing::Values(6, 8, 10)); // cpu_used
215
216 } // namespace
217