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Diffstat (limited to '')
-rw-r--r-- | third_party/jpeg-xl/lib/jxl/preview_test.cc | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/jxl/preview_test.cc b/third_party/jpeg-xl/lib/jxl/preview_test.cc new file mode 100644 index 0000000000..9d4603ca70 --- /dev/null +++ b/third_party/jpeg-xl/lib/jxl/preview_test.cc @@ -0,0 +1,68 @@ +// 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 <stddef.h> + +#include <string> + +#include "lib/extras/codec.h" +#include "lib/jxl/base/compiler_specific.h" +#include "lib/jxl/base/data_parallel.h" +#include "lib/jxl/base/override.h" +#include "lib/jxl/base/padded_bytes.h" +#include "lib/jxl/codec_in_out.h" +#include "lib/jxl/color_encoding_internal.h" +#include "lib/jxl/enc_butteraugli_comparator.h" +#include "lib/jxl/enc_cache.h" +#include "lib/jxl/enc_color_management.h" +#include "lib/jxl/enc_file.h" +#include "lib/jxl/enc_params.h" +#include "lib/jxl/headers.h" +#include "lib/jxl/image_bundle.h" +#include "lib/jxl/test_utils.h" +#include "lib/jxl/testing.h" + +namespace jxl { +namespace { +using test::Roundtrip; + +TEST(PreviewTest, RoundtripGivenPreview) { + const PaddedBytes orig = jxl::test::ReadTestData( + "external/wesaturate/500px/u76c0g_bliznaca_srgb8.png"); + CodecInOut io; + ASSERT_TRUE(SetFromBytes(Span<const uint8_t>(orig), &io)); + io.ShrinkTo(io.xsize() / 8, io.ysize() / 8); + // Same as main image + io.preview_frame = io.Main().Copy(); + const size_t preview_xsize = 15; + const size_t preview_ysize = 27; + io.preview_frame.ShrinkTo(preview_xsize, preview_ysize); + io.metadata.m.have_preview = true; + ASSERT_TRUE(io.metadata.m.preview_size.Set(io.preview_frame.xsize(), + io.preview_frame.ysize())); + + CompressParams cparams; + cparams.butteraugli_distance = 2.0; + cparams.speed_tier = SpeedTier::kSquirrel; + + CodecInOut io2; + JXL_EXPECT_OK(Roundtrip(&io, cparams, {}, &io2, _)); + EXPECT_EQ(preview_xsize, io2.metadata.m.preview_size.xsize()); + EXPECT_EQ(preview_ysize, io2.metadata.m.preview_size.ysize()); + EXPECT_EQ(preview_xsize, io2.preview_frame.xsize()); + EXPECT_EQ(preview_ysize, io2.preview_frame.ysize()); + + EXPECT_LE(ButteraugliDistance(io.preview_frame, io2.preview_frame, + cparams.ba_params, GetJxlCms(), + /*distmap=*/nullptr), + 2.5); + EXPECT_LE( + ButteraugliDistance(io.Main(), io2.Main(), cparams.ba_params, GetJxlCms(), + /*distmap=*/nullptr), + 2.5); +} + +} // namespace +} // namespace jxl |