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/*
* Copyright (C) 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, 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 COMPUTER, 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.
*/
#ifndef CanvasArray_h
#define CanvasArray_h
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include "CanvasArrayBuffer.h"
namespace WebCore {
class CanvasArray : public RefCounted<CanvasArray> {
public:
PassRefPtr<CanvasArrayBuffer> buffer() {
return m_buffer;
}
void* baseAddress() {
return m_baseAddress;
}
unsigned offset() const {
return m_offset;
}
virtual unsigned length() const = 0;
virtual unsigned sizeInBytes() const = 0;
virtual unsigned alignedSizeInBytes() const;
virtual ~CanvasArray();
protected:
CanvasArray(PassRefPtr<CanvasArrayBuffer> buffer, unsigned offset);
// This is the address of the CanvasArrayBuffer's storage, plus the offset.
void* m_baseAddress;
unsigned m_offset;
private:
RefPtr<CanvasArrayBuffer> m_buffer;
};
} // namespace WebCore
#endif // CanvasArray_h
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