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Diffstat (limited to 'Source/WebKit2/Shared/mac/UpdateChunk.cpp')
-rw-r--r-- | Source/WebKit2/Shared/mac/UpdateChunk.cpp | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/Source/WebKit2/Shared/mac/UpdateChunk.cpp b/Source/WebKit2/Shared/mac/UpdateChunk.cpp new file mode 100644 index 0000000..a9376db --- /dev/null +++ b/Source/WebKit2/Shared/mac/UpdateChunk.cpp @@ -0,0 +1,92 @@ +/* + * 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 "WebCoreArgumentCoders.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(), kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host, 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 |