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/*
* Copyright (c) 2021, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include "aom_ports/mem.h"
#include "aom_dsp/ssim.h"
#include "av1/common/blockd.h"
#include "test/codec_factory.h"
#include "test/encode_test_driver.h"
#include "test/util.h"
#include "test/y4m_video_source.h"
#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
namespace {
const unsigned int kFrames = 10;
const unsigned int kCqLevel = 18;
// List of ssim thresholds for speed settings 0-8 with all intra encoding mode.
const double kSsimThreshold[] = { 83.4, 83.4, 83.4, 83.3, 83.3,
83.0, 82.3, 81.1, 81.1 };
typedef struct {
const char *filename;
unsigned int input_bit_depth;
aom_img_fmt fmt;
aom_bit_depth_t bit_depth;
unsigned int profile;
} TestVideoParam;
std::ostream &operator<<(std::ostream &os, const TestVideoParam &test_arg) {
return os << "TestVideoParam { filename:" << test_arg.filename
<< " input_bit_depth:" << test_arg.input_bit_depth
<< " fmt:" << test_arg.fmt << " bit_depth:" << test_arg.bit_depth
<< " profile:" << test_arg.profile << " }";
}
const TestVideoParam kTestVectors[] = {
{ "park_joy_90p_8_420.y4m", 8, AOM_IMG_FMT_I420, AOM_BITS_8, 0 },
{ "park_joy_90p_8_422.y4m", 8, AOM_IMG_FMT_I422, AOM_BITS_8, 2 },
{ "park_joy_90p_8_444.y4m", 8, AOM_IMG_FMT_I444, AOM_BITS_8, 1 },
#if CONFIG_AV1_HIGHBITDEPTH
{ "park_joy_90p_10_420.y4m", 10, AOM_IMG_FMT_I42016, AOM_BITS_10, 0 },
{ "park_joy_90p_10_422.y4m", 10, AOM_IMG_FMT_I42216, AOM_BITS_10, 2 },
{ "park_joy_90p_10_444.y4m", 10, AOM_IMG_FMT_I44416, AOM_BITS_10, 1 },
{ "park_joy_90p_12_420.y4m", 12, AOM_IMG_FMT_I42016, AOM_BITS_12, 2 },
{ "park_joy_90p_12_422.y4m", 12, AOM_IMG_FMT_I42216, AOM_BITS_12, 2 },
{ "park_joy_90p_12_444.y4m", 12, AOM_IMG_FMT_I44416, AOM_BITS_12, 2 },
#endif
};
// This class is used to check adherence to given ssim value.
class EndToEndSSIMTest
: public ::libaom_test::CodecTestWith3Params<libaom_test::TestMode,
TestVideoParam, int>,
public ::libaom_test::EncoderTest {
protected:
EndToEndSSIMTest()
: EncoderTest(GET_PARAM(0)), encoding_mode_(GET_PARAM(1)),
test_video_param_(GET_PARAM(2)), cpu_used_(GET_PARAM(3)), nframes_(0),
ssim_(0.0) {}
~EndToEndSSIMTest() override = default;
void SetUp() override { InitializeConfig(encoding_mode_); }
void BeginPassHook(unsigned int) override {
nframes_ = 0;
ssim_ = 0.0;
}
void CalculateFrameLevelSSIM(const aom_image_t *img_src,
const aom_image_t *img_enc,
aom_bit_depth_t bit_depth,
unsigned int input_bit_depth) override {
double frame_ssim;
double plane_ssim[MAX_MB_PLANE] = { 0.0, 0.0, 0.0 };
int crop_widths[PLANE_TYPES];
int crop_heights[PLANE_TYPES];
crop_widths[PLANE_TYPE_Y] = img_src->d_w;
crop_heights[PLANE_TYPE_Y] = img_src->d_h;
// Width of UV planes calculated based on chroma_shift values.
crop_widths[PLANE_TYPE_UV] =
img_src->x_chroma_shift == 1 ? (img_src->w + 1) >> 1 : img_src->w;
crop_heights[PLANE_TYPE_UV] =
img_src->y_chroma_shift == 1 ? (img_src->h + 1) >> 1 : img_src->h;
nframes_++;
#if CONFIG_AV1_HIGHBITDEPTH
uint8_t is_hbd = bit_depth > AOM_BITS_8;
if (is_hbd) {
// HBD ssim calculation.
uint8_t shift = bit_depth - input_bit_depth;
for (int i = AOM_PLANE_Y; i < MAX_MB_PLANE; ++i) {
const int is_uv = i > AOM_PLANE_Y;
plane_ssim[i] = aom_highbd_ssim2(
CONVERT_TO_BYTEPTR(img_src->planes[i]),
CONVERT_TO_BYTEPTR(img_enc->planes[i]),
img_src->stride[is_uv] >> is_hbd, img_enc->stride[is_uv] >> is_hbd,
crop_widths[is_uv], crop_heights[is_uv], input_bit_depth, shift);
}
frame_ssim = plane_ssim[AOM_PLANE_Y] * .8 +
.1 * (plane_ssim[AOM_PLANE_U] + plane_ssim[AOM_PLANE_V]);
// Accumulate to find sequence level ssim value.
ssim_ += frame_ssim;
return;
}
#else
(void)bit_depth;
(void)input_bit_depth;
#endif // CONFIG_AV1_HIGHBITDEPTH
// LBD ssim calculation.
for (int i = AOM_PLANE_Y; i < MAX_MB_PLANE; ++i) {
const int is_uv = i > AOM_PLANE_Y;
plane_ssim[i] = aom_ssim2(img_src->planes[i], img_enc->planes[i],
img_src->stride[is_uv], img_enc->stride[is_uv],
crop_widths[is_uv], crop_heights[is_uv]);
}
frame_ssim = plane_ssim[AOM_PLANE_Y] * .8 +
.1 * (plane_ssim[AOM_PLANE_U] + plane_ssim[AOM_PLANE_V]);
// Accumulate to find sequence level ssim value.
ssim_ += frame_ssim;
}
void PreEncodeFrameHook(::libaom_test::VideoSource *video,
::libaom_test::Encoder *encoder) override {
if (video->frame() == 0) {
encoder->Control(AV1E_SET_FRAME_PARALLEL_DECODING, 1);
encoder->Control(AV1E_SET_TILE_COLUMNS, 4);
encoder->Control(AOME_SET_CPUUSED, cpu_used_);
encoder->Control(AOME_SET_TUNING, AOM_TUNE_SSIM);
encoder->Control(AOME_SET_CQ_LEVEL, kCqLevel);
}
}
double GetAverageSsim() const {
if (nframes_) return 100 * pow(ssim_ / nframes_, 8.0);
return 0.0;
}
double GetSsimThreshold() { return kSsimThreshold[cpu_used_]; }
void DoTest() {
cfg_.g_profile = test_video_param_.profile;
cfg_.g_input_bit_depth = test_video_param_.input_bit_depth;
cfg_.g_bit_depth = test_video_param_.bit_depth;
if (cfg_.g_bit_depth > 8) init_flags_ |= AOM_CODEC_USE_HIGHBITDEPTH;
std::unique_ptr<libaom_test::VideoSource> video(
new libaom_test::Y4mVideoSource(test_video_param_.filename, 0,
kFrames));
ASSERT_NE(video, nullptr);
ASSERT_NO_FATAL_FAILURE(RunLoop(video.get()));
const double ssim = GetAverageSsim();
EXPECT_GT(ssim, GetSsimThreshold())
<< "encoding mode = " << encoding_mode_ << ", cpu used = " << cpu_used_;
}
private:
const libaom_test::TestMode encoding_mode_;
const TestVideoParam test_video_param_;
const int cpu_used_;
unsigned int nframes_;
double ssim_;
};
class EndToEndSSIMTestLarge : public EndToEndSSIMTest {};
TEST_P(EndToEndSSIMTestLarge, EndtoEndSSIMTest) { DoTest(); }
TEST_P(EndToEndSSIMTest, EndtoEndSSIMTest) { DoTest(); }
AV1_INSTANTIATE_TEST_SUITE(EndToEndSSIMTestLarge,
::testing::Values(::libaom_test::kAllIntra),
::testing::ValuesIn(kTestVectors),
::testing::Values(2, 4, 6, 8)); // cpu_used
AV1_INSTANTIATE_TEST_SUITE(EndToEndSSIMTest,
::testing::Values(::libaom_test::kAllIntra),
::testing::Values(kTestVectors[0]), // 420
::testing::Values(6)); // cpu_used
} // namespace
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