/*
 * Copyright (C) 2020 Cloudinary Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#include <WebCore/AffineTransform.h>
#include <WebCore/FloatSize.h>
#include <WebCore/IntSize.h>

namespace WebCore {

struct ImageResolution {
    static constexpr unsigned DefaultResolution = 72;

    // Since this class is to be used mainly with EXIF,
    // this range intentionally matches the resolution values from the EXIF spec.
    // See JEITA CP-3451, page 18. http://www.exif.org/Exif2-2.PDF

    enum ResolutionUnit {
        None = 1,
        Inches = 2,
        Centimeters = 3
    };

    struct ResolutionMetadata {
        FloatSize preferredSize;
        FloatSize resolution;
        ResolutionUnit resolutionUnit;
    };

    static std::optional<IntSize> densityCorrectedSize(const FloatSize& sourceSize, const ResolutionMetadata&);
};

} // namespace WebCore
