system: Linux mars.sprixweb.com 3.10.0-1160.119.1.el7.x86_64 #1 SMP Tue Jun 4 14:43:51 UTC 2024 x86_64
// Copyright 2022 Google LLC
// SPDX-License-Identifier: BSD-2-Clause
#include <sstream>
#include <tuple>
#include "avif/avif.h"
#include "aviftest_helpers.h"
#include "gtest/gtest.h"
#include "y4m.h"
using testing::Combine;
using testing::Values;
namespace libavif {
namespace {
class Y4mTest
: public testing::TestWithParam<
std::tuple</*width=*/int, /*height=*/int, /*bit_depth=*/int,
/*yuv_format=*/avifPixelFormat, /*yuv_range=*/avifRange,
/*create_alpha=*/bool>> {};
TEST_P(Y4mTest, EncodeDecode) {
const int width = std::get<0>(GetParam());
const int height = std::get<1>(GetParam());
const int bit_depth = std::get<2>(GetParam());
const avifPixelFormat yuv_format = std::get<3>(GetParam());
const avifRange yuv_range = std::get<4>(GetParam());
const bool create_alpha = std::get<5>(GetParam());
std::ostringstream file_path;
file_path << testing::TempDir() << "avify4mtest_encodedecode_" << width << "_"
<< height << "_" << bit_depth << "_" << yuv_format << "_"
<< yuv_range << "_" << create_alpha;
testutil::AvifImagePtr image = testutil::CreateImage(
width, height, bit_depth, yuv_format,
create_alpha ? AVIF_PLANES_ALL : AVIF_PLANES_YUV, yuv_range);
ASSERT_NE(image, nullptr);
const uint32_t yuva[] = {
(yuv_range == AVIF_RANGE_LIMITED) ? (235u << (bit_depth - 8))
: ((1u << bit_depth) - 1),
(yuv_range == AVIF_RANGE_LIMITED) ? (240u << (bit_depth - 8))
: ((1u << bit_depth) - 1),
(yuv_range == AVIF_RANGE_LIMITED) ? (240u << (bit_depth - 8))
: ((1u << bit_depth) - 1),
(1u << bit_depth) - 1};
testutil::FillImagePlain(image.get(), yuva);
ASSERT_TRUE(y4mWrite(file_path.str().c_str(), image.get()));
testutil::AvifImagePtr decoded(avifImageCreateEmpty(), avifImageDestroy);
ASSERT_NE(decoded, nullptr);
ASSERT_TRUE(y4mRead(file_path.str().c_str(), decoded.get(),
/*sourceTiming=*/nullptr, /*iter=*/nullptr));
EXPECT_TRUE(testutil::AreImagesEqual(*image, *decoded));
}
TEST_P(Y4mTest, OutOfRange) {
const int width = std::get<0>(GetParam());
const int height = std::get<1>(GetParam());
const int bit_depth = std::get<2>(GetParam());
const avifPixelFormat yuv_format = std::get<3>(GetParam());
const avifRange yuv_range = std::get<4>(GetParam());
const bool create_alpha = std::get<5>(GetParam());
std::ostringstream file_path;
file_path << testing::TempDir() << "avify4mtest_outofrange_" << width << "_"
<< height << "_" << bit_depth << "_" << yuv_format << "_"
<< yuv_range << "_" << create_alpha;
testutil::AvifImagePtr image = testutil::CreateImage(
width, height, bit_depth, yuv_format,
create_alpha ? AVIF_PLANES_ALL : AVIF_PLANES_YUV, yuv_range);
ASSERT_NE(image, nullptr);
// Insert values that may be out-of-range on purpose compared to the specified
// bit_depth and yuv_range.
const uint32_t yuva8[] = {255, 0, 255, 255};
const uint32_t yuva16[] = {0, (1u << 16) - 1u, 0, (1u << 16) - 1u};
testutil::FillImagePlain(image.get(),
avifImageUsesU16(image.get()) ? yuva16 : yuva8);
ASSERT_TRUE(y4mWrite(file_path.str().c_str(), image.get()));
// y4mRead() should clamp the values to respect the specified depth in order
// to avoid computation with unexpected sample values. However, it does not
// respect the limited ("video") range because the libavif API just passes
// that tag along, it is ignored by the compression algorithm.
testutil::AvifImagePtr decoded(avifImageCreateEmpty(), avifImageDestroy);
ASSERT_NE(decoded, nullptr);
ASSERT_TRUE(y4mRead(file_path.str().c_str(), decoded.get(),
/*sourceTiming=*/nullptr, /*iter=*/nullptr));
// Pass it through the libavif API to make sure reading a bad y4m does not
// trigger undefined behavior.
const testutil::AvifRwData encoded = testutil::Encode(decoded.get());
EXPECT_NE(testutil::Decode(encoded.data, encoded.size), nullptr);
}
INSTANTIATE_TEST_SUITE_P(
OpaqueCombinations, Y4mTest,
Combine(/*width=*/Values(1, 2, 3),
/*height=*/Values(1, 2, 3),
/*depths=*/Values(8, 10, 12),
Values(AVIF_PIXEL_FORMAT_YUV444, AVIF_PIXEL_FORMAT_YUV422,
AVIF_PIXEL_FORMAT_YUV420, AVIF_PIXEL_FORMAT_YUV400),
Values(AVIF_RANGE_LIMITED, AVIF_RANGE_FULL),
/*create_alpha=*/Values(false)));
// Writing alpha is currently only supported in 8bpc YUV444.
INSTANTIATE_TEST_SUITE_P(AlphaCombinations, Y4mTest,
Combine(/*width=*/Values(1, 2, 3),
/*height=*/Values(1, 2, 3),
/*depths=*/Values(8),
Values(AVIF_PIXEL_FORMAT_YUV444),
Values(AVIF_RANGE_LIMITED, AVIF_RANGE_FULL),
/*create_alpha=*/Values(true)));
} // namespace
} // namespace libavif