/*
 * Copyright (C) 2022 Apple 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 INC. 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 INC. 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/ByteArrayPixelBuffer.h>

namespace IPC {

class PixelBufferReference {
public:
    PixelBufferReference(Ref<WebCore::PixelBuffer>&& pixelBuffer)
        : m_pixelBuffer(WTFMove(pixelBuffer))
    {
    }

    Ref<WebCore::PixelBuffer> takePixelBuffer() { return WTFMove(m_pixelBuffer); }

    template<class Encoder> void encode(Encoder&) const;
    template<class Decoder> static std::optional<PixelBufferReference> decode(Decoder&);

private:
    Ref<WebCore::PixelBuffer> m_pixelBuffer;
};

template<class Encoder>
void PixelBufferReference::encode(Encoder& encoder) const
{
    if (!is<WebCore::ByteArrayPixelBuffer>(m_pixelBuffer)) {
        ASSERT_NOT_REACHED();
        return;
    }
    downcast<WebCore::ByteArrayPixelBuffer>(m_pixelBuffer.get()).encode(encoder);
}

template<class Decoder>
std::optional<PixelBufferReference> PixelBufferReference::decode(Decoder& decoder)
{
    if (auto pixelBuffer = WebCore::ByteArrayPixelBuffer::decode(decoder))
        return { { WTFMove(*pixelBuffer) } };
    return std::nullopt;
}

} // namespace IPC