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/*
* Copyright (C) 2021-2022 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 "IntSize.h"
#include "PixelBufferFormat.h"
#include <wtf/RefCounted.h>
namespace WTF {
class TextStream;
}
namespace WebCore {
class PixelBuffer : public RefCounted<PixelBuffer> {
WTF_MAKE_NONCOPYABLE(PixelBuffer);
public:
WEBCORE_EXPORT static bool supportedPixelFormat(PixelFormat);
WEBCORE_EXPORT virtual ~PixelBuffer();
const PixelBufferFormat& format() const { return m_format; }
const IntSize& size() const { return m_size; }
uint8_t* bytes() const { return m_bytes; }
size_t sizeInBytes() const { return m_sizeInBytes; }
virtual bool isByteArrayPixelBuffer() const { return false; }
virtual RefPtr<PixelBuffer> createScratchPixelBuffer(const IntSize&) const = 0;
bool setRange(const uint8_t* data, size_t dataByteLength, size_t byteOffset);
bool zeroRange(size_t byteOffset, size_t rangeByteLength);
void zeroFill() { zeroRange(0, sizeInBytes()); }
WEBCORE_EXPORT uint8_t item(size_t index) const;
void set(size_t index, double value);
protected:
WEBCORE_EXPORT PixelBuffer(const PixelBufferFormat&, const IntSize&, uint8_t* bytes, size_t sizeInBytes);
WEBCORE_EXPORT static CheckedUint32 computeBufferSize(const PixelBufferFormat&, const IntSize&);
PixelBufferFormat m_format;
IntSize m_size;
uint8_t* m_bytes { nullptr };
size_t m_sizeInBytes { 0 };
};
} // namespace WebCore
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