blob: d01799ff30e3fe11681a05b2ec80e3c6d30da7c9 [file] [log] [blame]
/*
* Copyright (C) 2010 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.
*/
#include "UpdateChunk.h"
#include "ArgumentDecoder.h"
#include "ArgumentEncoder.h"
#include "Attachment.h"
#include "WebCoreTypeArgumentMarshalling.h"
#include <WebCore/FloatRect.h>
#include <mach/vm_map.h>
#include <wtf/RetainPtr.h>
using namespace WebCore;
namespace WebKit {
UpdateChunk::UpdateChunk()
: m_data(0)
, m_size(0)
{
}
UpdateChunk::UpdateChunk(const IntRect& rect)
: m_rect(rect)
, m_size(size())
{
vm_allocate(mach_task_self(), reinterpret_cast<vm_address_t*>(&m_data), m_size, VM_FLAGS_ANYWHERE);
}
UpdateChunk::~UpdateChunk()
{
if (m_data)
vm_deallocate(mach_task_self(), reinterpret_cast<vm_address_t>(m_data), m_size);
}
RetainPtr<CGImageRef> UpdateChunk::createImage()
{
RetainPtr<CGDataProviderRef> provider(AdoptCF, CGDataProviderCreateWithData(0, m_data, size(), 0));
RetainPtr<CGColorSpaceRef> colorSpace(AdoptCF, CGColorSpaceCreateDeviceRGB());
RetainPtr<CGImageRef> image(AdoptCF, CGImageCreate(m_rect.width(), m_rect.height(), 8, 32, m_rect.width() * 4, colorSpace.get(), kCGImageAlphaPremultipliedLast, provider.get(), 0, false, kCGRenderingIntentDefault));
return image;
}
void UpdateChunk::encode(CoreIPC::ArgumentEncoder& encoder) const
{
encoder.encode(m_rect);
encoder.encode(CoreIPC::Attachment(m_data, size(), MACH_MSG_VIRTUAL_COPY, true));
m_data = 0;
}
bool UpdateChunk::decode(CoreIPC::ArgumentDecoder& decoder, UpdateChunk& chunk)
{
IntRect rect;
if (!decoder.decode(rect))
return false;
chunk.m_rect = rect;
CoreIPC::Attachment attachment;
if (!decoder.decode(attachment))
return false;
chunk.m_size = attachment.size();
chunk.m_data = reinterpret_cast<uint8_t*>(attachment.address());
return true;
}
} // namespace WebKit