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/*
* Copyright (C) 2010 Apple Inc. All rights reserved.
* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) 2010 University of Szeged
*
* 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.
*/
#include "UpdateChunk.h"
#include "ArgumentDecoder.h"
#include "ArgumentEncoder.h"
#include "MappedMemoryPool.h"
#include "WebCoreArgumentCoders.h"
#include <QIODevice>
#include <QImage>
#include <QPixmap>
#include <WebCore/FloatRect.h>
#include <wtf/text/WTFString.h>
using namespace WebCore;
using namespace std;
namespace WebKit {
UpdateChunk::UpdateChunk()
: m_mappedMemory(0)
{
}
UpdateChunk::UpdateChunk(const IntRect& rect)
: m_rect(rect)
, m_mappedMemory(MappedMemoryPool::instance()->mapMemory(size()))
{
}
UpdateChunk::~UpdateChunk()
{
if (m_mappedMemory)
m_mappedMemory->markFree();
}
void UpdateChunk::encode(CoreIPC::ArgumentEncoder* encoder) const
{
encoder->encode(m_rect);
encoder->encode(String(m_mappedMemory->mappedFileName()));
m_mappedMemory = 0;
}
bool UpdateChunk::decode(CoreIPC::ArgumentDecoder* decoder, UpdateChunk& chunk)
{
ASSERT_ARG(chunk, chunk.isEmpty());
IntRect rect;
if (!decoder->decode(rect))
return false;
chunk.m_rect = rect;
if (chunk.isEmpty())
return true; // Successfully decoded empty chunk.
String fileName;
if (!decoder->decode(fileName))
return false;
chunk.m_mappedMemory = MappedMemoryPool::instance()->mapFile(fileName, chunk.size());
return true;
}
size_t UpdateChunk::size() const
{
int bpp;
if (QPixmap::defaultDepth() == 16)
bpp = 2;
else
bpp = 4;
return ((m_rect.width() * bpp + 3) & ~0x3)
* m_rect.height();
}
QImage UpdateChunk::createImage() const
{
ASSERT(m_mappedMemory);
QImage::Format format;
int bpp;
if (QPixmap::defaultDepth() == 16) {
format = QImage::Format_RGB16;
bpp = 2;
} else {
format = QImage::Format_RGB32;
bpp = 4;
}
return QImage(m_mappedMemory->data(), m_rect.width(), m_rect.height(), (m_rect.width() * bpp + 3) & ~0x3, format);
}
} // namespace WebKit
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