Source/WebCore/platform/graphics/cairo/ImageBufferCairoImageSurfaceBackend.h

/*
 * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
 * Copyright (C) 2007 Holger Hans Peter Freyther <zecke@selfish.org>
 * Copyright (C) 2008, 2009 Dirk Schulze <krit@webkit.org>
 * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
 * Copyright (C) 2020-2021 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. ``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
 * 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

#if USE(CAIRO)

#include "ImageBufferCairoSurfaceBackend.h"
#include <wtf/IsoMalloc.h>

namespace WebCore {

class ImageBufferCairoImageSurfaceBackend : public ImageBufferCairoSurfaceBackend {
    WTF_MAKE_ISO_ALLOCATED(ImageBufferCairoImageSurfaceBackend);
    WTF_MAKE_NONCOPYABLE(ImageBufferCairoImageSurfaceBackend);
public:
    static IntSize calculateSafeBackendSize(const Parameters&);
    static unsigned calculateBytesPerRow(const IntSize& backendSize);
    static size_t calculateMemoryCost(const Parameters&);

    static std::unique_ptr<ImageBufferCairoImageSurfaceBackend> create(const Parameters&, const ImageBuffer::CreationContext&);
    static std::unique_ptr<ImageBufferCairoImageSurfaceBackend> create(const Parameters&, const GraphicsContext&);

private:
    ImageBufferCairoImageSurfaceBackend(const Parameters&, RefPtr<cairo_surface_t>&&);

    unsigned bytesPerRow() const override;

    void platformTransformColorSpace(const std::array<uint8_t, 256>& lookUpTable) override;
};

} // namespace WebCore

#endif // USE(CAIRO)