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/*
* Copyright (C) 2010-2023 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 "config.h"
#include "ShareableBitmap.h"
#include "SharedMemory.h"
#include "WebCoreArgumentCoders.h"
#include <WebCore/GraphicsContext.h>
#include <wtf/DebugHeap.h>
namespace WebKit {
using namespace WebCore;
DECLARE_ALLOCATOR_WITH_HEAP_IDENTIFIER(ShareableBitmap);
DEFINE_ALLOCATOR_WITH_HEAP_IDENTIFIER(ShareableBitmap);
ShareableBitmapConfiguration::ShareableBitmapConfiguration(const IntSize& size, std::optional<DestinationColorSpace> colorSpace, bool isOpaque)
: m_size(size)
, m_colorSpace(validateColorSpace(colorSpace))
, m_isOpaque(isOpaque)
, m_bytesPerPixel(calculateBytesPerPixel(this->colorSpace()))
, m_bytesPerRow(calculateBytesPerRow(size, this->colorSpace()))
#if USE(CG)
, m_bitmapInfo(calculateBitmapInfo(this->colorSpace(), isOpaque))
#endif
{
ASSERT(!m_size.isEmpty());
}
ShareableBitmapConfiguration::ShareableBitmapConfiguration(const IntSize& size, std::optional<DestinationColorSpace> colorSpace, bool isOpaque, unsigned bytesPerPixel, unsigned bytesPerRow
#if USE(CG)
, CGBitmapInfo bitmapInfo
#endif
)
: m_size(size)
, m_colorSpace(colorSpace)
, m_isOpaque(isOpaque)
, m_bytesPerPixel(bytesPerPixel)
, m_bytesPerRow(bytesPerRow)
#if USE(CG)
, m_bitmapInfo(bitmapInfo)
#endif
{
// This constructor is called when decoding ShareableBitmapConfiguration. So this constructor
// will behave like the default constructor if a null ShareableBitmapHandle was encoded.
}
CheckedUint32 ShareableBitmapConfiguration::calculateSizeInBytes(const IntSize& size, const DestinationColorSpace& colorSpace)
{
return calculateBytesPerRow(size, colorSpace) * size.height();
}
RefPtr<ShareableBitmap> ShareableBitmap::create(const ShareableBitmapConfiguration& configuration)
{
auto sizeInBytes = configuration.sizeInBytes();
if (sizeInBytes.hasOverflowed())
return nullptr;
RefPtr<SharedMemory> sharedMemory = SharedMemory::allocate(sizeInBytes);
if (!sharedMemory)
return nullptr;
return adoptRef(new ShareableBitmap(configuration, sharedMemory.releaseNonNull()));
}
RefPtr<ShareableBitmap> ShareableBitmap::create(const ShareableBitmapConfiguration& configuration, Ref<SharedMemory>&& sharedMemory)
{
auto sizeInBytes = configuration.sizeInBytes();
if (sizeInBytes.hasOverflowed())
return nullptr;
if (sharedMemory->size() < sizeInBytes) {
ASSERT_NOT_REACHED();
return nullptr;
}
return adoptRef(new ShareableBitmap(configuration, WTFMove(sharedMemory)));
}
RefPtr<ShareableBitmap> ShareableBitmap::createFromImageDraw(NativeImage& image)
{
auto imageSize = image.size();
auto bitmap = ShareableBitmap::create({ imageSize, image.colorSpace() });
if (!bitmap)
return nullptr;
auto context = bitmap->createGraphicsContext();
if (!context)
return nullptr;
context->drawNativeImage(image, imageSize, FloatRect({ }, imageSize), FloatRect({ }, imageSize), { CompositeOperator::Copy });
return bitmap;
}
RefPtr<ShareableBitmap> ShareableBitmap::create(Handle&& handle, SharedMemory::Protection protection)
{
auto sharedMemory = SharedMemory::map(WTFMove(handle.m_handle), protection);
if (!sharedMemory)
return nullptr;
return create(handle.m_configuration, sharedMemory.releaseNonNull());
}
std::optional<Ref<ShareableBitmap>> ShareableBitmap::createReadOnly(std::optional<Handle>&& handle)
{
if (!handle)
return std::nullopt;
auto sharedMemory = SharedMemory::map(WTFMove(handle->m_handle), SharedMemory::Protection::ReadOnly);
if (!sharedMemory)
return std::nullopt;
return adoptRef(*new ShareableBitmap(handle->m_configuration, sharedMemory.releaseNonNull()));
}
auto ShareableBitmap::createHandle(SharedMemory::Protection protection) const -> std::optional<Handle>
{
auto memoryHandle = m_sharedMemory->createHandle(protection);
if (!memoryHandle)
return std::nullopt;
Handle handle;
handle.m_handle = WTFMove(*memoryHandle);
handle.m_configuration = m_configuration;
return { WTFMove(handle) };
}
auto ShareableBitmap::createReadOnlyHandle() const -> std::optional<Handle>
{
Handle handle;
auto memoryHandle = m_sharedMemory->createHandle(SharedMemory::Protection::ReadOnly);
if (!memoryHandle)
return std::nullopt;
handle.m_handle = WTFMove(*memoryHandle);
handle.m_configuration = m_configuration;
return handle;
}
ShareableBitmap::ShareableBitmap(ShareableBitmapConfiguration configuration, Ref<SharedMemory>&& sharedMemory)
: m_configuration(configuration)
, m_sharedMemory(WTFMove(sharedMemory))
{
}
void* ShareableBitmap::data() const
{
return m_sharedMemory->data();
}
} // namespace WebKit
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