/*

 * Copyright (c) 2025, Nico Weber <thakis@chromium.org>

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */

#pragma once

#include <AK/Span.h>

#include <LibGfx/Size.h>

namespace Gfx::JPEG2000 {

template<class T>

struct Span2D {

    Span<T> data;

    IntSize size;

    int pitch { 0 };

    Span2D() = default;

Gfx::JPEG2000::Span2D<float>::Span2D()

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    Span2D() = default;

Gfx::JPEG2000::Span2D<float const>::Span2D()

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    Span2D() = default;

    Span2D(Span<T> data, IntSize size, int pitch)

        : data(data)

        , size(size)

        , pitch(pitch)

    {

        VERIFY(size.is_empty() || static_cast<int>(data.size()) >= (size.height() - 1) * pitch + size.width());

    }

    [[nodiscard]] ALWAYS_INLINE constexpr Span<T> scanline(int y) const

    {

        return data.slice(y * pitch, size.width());

    }

    [[nodiscard]] ALWAYS_INLINE constexpr T const& operator[](size_t index) const

    {

        return data[index];

    }

    [[nodiscard]] ALWAYS_INLINE constexpr int width() const

    {

        return size.width();

    }

    [[nodiscard]] ALWAYS_INLINE constexpr int height() const

    {

        return size.height();

    }

};

}