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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/jxl/base/data_parallel.h"
#include "lib/jxl/codec_in_out.h"
#include "lib/jxl/color_encoding_internal.h"
#include "lib/jxl/color_management.h"
#include "lib/jxl/dec_xyb.h"
#include "lib/jxl/enc_color_management.h"
#include "lib/jxl/enc_xyb.h"
#include "lib/jxl/image.h"
#include "lib/jxl/image_bundle.h"
#include "lib/jxl/image_test_utils.h"
#include "lib/jxl/testing.h"
namespace jxl {
namespace {
TEST(OpsinInverseTest, LinearInverseInverts) {
Image3F linear(128, 128);
RandomFillImage(&linear, 0.0f, 1.0f);
CodecInOut io;
io.metadata.m.SetFloat32Samples();
io.metadata.m.color_encoding = ColorEncoding::LinearSRGB();
io.SetFromImage(CopyImage(linear), io.metadata.m.color_encoding);
ThreadPool* null_pool = nullptr;
Image3F opsin(io.xsize(), io.ysize());
(void)ToXYB(io.Main(), null_pool, &opsin, GetJxlCms());
OpsinParams opsin_params;
opsin_params.Init(/*intensity_target=*/255.0f);
OpsinToLinearInplace(&opsin, /*pool=*/nullptr, opsin_params);
JXL_ASSERT_OK(VerifyRelativeError(linear, opsin, 3E-3, 2E-4, _));
}
TEST(OpsinInverseTest, YcbCrInverts) {
Image3F rgb(128, 128);
RandomFillImage(&rgb, 0.0f, 1.0f);
ThreadPool* null_pool = nullptr;
Image3F ycbcr(rgb.xsize(), rgb.ysize());
EXPECT_TRUE(RgbToYcbcr(rgb.Plane(0), rgb.Plane(1), rgb.Plane(2),
&ycbcr.Plane(1), &ycbcr.Plane(0), &ycbcr.Plane(2),
null_pool));
Image3F rgb2(rgb.xsize(), rgb.ysize());
YcbcrToRgb(ycbcr, &rgb2, Rect(rgb));
JXL_ASSERT_OK(VerifyRelativeError(rgb, rgb2, 4E-5, 4E-7, _));
}
} // namespace
} // namespace jxl
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