/*

 * Copyright (C) 2008, 2009 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.

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 *

 * 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.

 */

#ifndef CanvasPixelArray_h

#define CanvasPixelArray_h

#include <wtf/ByteArray.h>

#include <wtf/MathExtras.h>

#include <wtf/PassRefPtr.h>

#include <wtf/RefCounted.h>

#include <wtf/Vector.h>

namespace WebCore {

    class CanvasPixelArray : public RefCounted<CanvasPixelArray> {

    public:

        static PassRefPtr<CanvasPixelArray> create(unsigned length);

        WTF::ByteArray* data() { return m_data.get(); }

        const WTF::ByteArray* data() const { return m_data.get(); }

        unsigned length() const { return m_data->length(); }

        void set(unsigned index, double value)

        {

            m_data->set(index, value);

        }

        void set(unsigned index, unsigned char value)

        {

            m_data->set(index, value);

        }

        bool get(unsigned index, unsigned char& result) const

        {

            return m_data->get(index, result);

        }

        unsigned char get(unsigned index) const

        {

            return m_data->get(index);

        }

    private:

        CanvasPixelArray(unsigned length);

        RefPtr<WTF::ByteArray> m_data;

    };

} // namespace WebCore

#endif // CanvasPixelArray_h