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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 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.
*/
#ifndef ByteArray_h
#define ByteArray_h
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
namespace WTF {
class ByteArray : public RefCountedBase {
public:
unsigned length() const { return m_size; }
void set(unsigned index, double value)
{
if (index >= m_size)
return;
if (!(value > 0)) // Clamp NaN to 0
value = 0;
else if (value > 255)
value = 255;
m_data[index] = static_cast<unsigned char>(value + 0.5);
}
bool get(unsigned index, unsigned char& result) const
{
if (index >= m_size)
return false;
result = m_data[index];
return true;
}
unsigned char* data() { return m_data; }
void deref()
{
if (derefBase()) {
// We allocated with new unsigned char[] in create(),
// and then used placement new to construct the object.
this->~ByteArray();
delete[] reinterpret_cast<unsigned char*>(this);
}
}
static PassRefPtr<ByteArray> create(size_t size);
private:
ByteArray(size_t size)
: RefCountedBase(1)
, m_size(size)
{
}
size_t m_size;
unsigned char m_data[sizeof(size_t)];
};
}
#endif
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