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// Copyright (c) the JPEG XL Project Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include "lib/extras/codec.h"
#include "lib/jxl/enc_butteraugli_comparator.h"
#include "lib/jxl/enc_color_management.h"
#include "lib/jxl/enc_params.h"
#include "lib/jxl/image_test_utils.h"
#include "lib/jxl/test_utils.h"
#include "lib/jxl/testing.h"
namespace jxl {
namespace {
using ::jxl::test::Roundtrip;
TEST(PatchDictionaryTest, GrayscaleModular) {
const PaddedBytes orig = jxl::test::ReadTestData("jxl/grayscale_patches.png");
CodecInOut io;
ASSERT_TRUE(SetFromBytes(Span<const uint8_t>(orig), &io));
CompressParams cparams;
cparams.SetLossless();
cparams.patches = jxl::Override::kOn;
CodecInOut io2;
// Without patches: ~25k
size_t compressed_size;
JXL_EXPECT_OK(Roundtrip(&io, cparams, {}, &io2, _, &compressed_size));
EXPECT_LE(compressed_size, 8000u);
JXL_ASSERT_OK(VerifyRelativeError(*io.Main().color(), *io2.Main().color(),
1e-7f, 0, _));
}
TEST(PatchDictionaryTest, GrayscaleVarDCT) {
const PaddedBytes orig = jxl::test::ReadTestData("jxl/grayscale_patches.png");
CodecInOut io;
ASSERT_TRUE(SetFromBytes(Span<const uint8_t>(orig), &io));
CompressParams cparams;
cparams.patches = jxl::Override::kOn;
CodecInOut io2;
// Without patches: ~47k
size_t compressed_size;
JXL_EXPECT_OK(Roundtrip(&io, cparams, {}, &io2, _, &compressed_size));
EXPECT_LE(compressed_size, 14000u);
// Without patches: ~1.2
EXPECT_LE(
ButteraugliDistance(io.frames, io2.frames, cparams.ba_params, GetJxlCms(),
/*distmap=*/nullptr),
1.1);
}
} // namespace
} // namespace jxl
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