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/*
* Copyright (C) 2020-2021 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
#if ENABLE(GPU_PROCESS)
#include "Decoder.h"
#include "GPUConnectionToWebProcess.h"
#include "Logging.h"
#include <WebCore/ConcreteImageBuffer.h>
#include <WebCore/DisplayList.h>
#include <WebCore/DisplayListItems.h>
#include <WebCore/DisplayListReplayer.h>
namespace WebKit {
template<typename BackendType>
class RemoteImageBuffer : public WebCore::ConcreteImageBuffer<BackendType> {
using BaseConcreteImageBuffer = WebCore::ConcreteImageBuffer<BackendType>;
using BaseConcreteImageBuffer::context;
using BaseConcreteImageBuffer::m_backend;
using BaseConcreteImageBuffer::putPixelBuffer;
public:
static auto create(const WebCore::FloatSize& size, float resolutionScale, const WebCore::DestinationColorSpace& colorSpace, WebCore::PixelFormat pixelFormat, RemoteRenderingBackend& remoteRenderingBackend, WebCore::RenderingResourceIdentifier renderingResourceIdentifier)
{
return BaseConcreteImageBuffer::template create<RemoteImageBuffer>(size, resolutionScale, colorSpace, pixelFormat, nullptr, remoteRenderingBackend, renderingResourceIdentifier);
}
RemoteImageBuffer(const WebCore::ImageBufferBackend::Parameters& parameters, std::unique_ptr<BackendType>&& backend, RemoteRenderingBackend& remoteRenderingBackend, WebCore::RenderingResourceIdentifier renderingResourceIdentifier)
: BaseConcreteImageBuffer(parameters, WTFMove(backend), renderingResourceIdentifier)
, m_remoteRenderingBackend(remoteRenderingBackend)
, m_renderingResourceIdentifier(renderingResourceIdentifier)
{
m_remoteRenderingBackend.didCreateImageBufferBackend(m_backend->createImageBufferBackendHandle(), renderingResourceIdentifier);
}
~RemoteImageBuffer()
{
// Unwind the context's state stack before destruction, since calls to restore may not have
// been flushed yet, or the web process may have terminated.
while (context().stackSize())
context().restore();
}
#if HAVE(IOSURFACE_SET_OWNERSHIP_IDENTITY)
void setProcessOwnership(task_id_token_t newOwner)
{
if (m_backend)
m_backend->setProcessOwnership(newOwner);
}
#endif
private:
friend class RemoteRenderingBackend;
bool apply(WebCore::DisplayList::ItemHandle item, WebCore::GraphicsContext& context)
{
if (item.is<WebCore::DisplayList::GetPixelBuffer>()) {
auto& getPixelBufferItem = item.get<WebCore::DisplayList::GetPixelBuffer>();
auto pixelBuffer = BaseConcreteImageBuffer::getPixelBuffer(getPixelBufferItem.outputFormat(), getPixelBufferItem.srcRect());
m_remoteRenderingBackend.populateGetPixelBufferSharedMemory(WTFMove(pixelBuffer));
return true;
}
if (item.is<WebCore::DisplayList::PutPixelBuffer>()) {
auto& putPixelBufferItem = item.get<WebCore::DisplayList::PutPixelBuffer>();
putPixelBuffer(putPixelBufferItem.pixelBuffer(), putPixelBufferItem.srcRect(), putPixelBufferItem.destPoint(), putPixelBufferItem.destFormat());
return true;
}
if (item.is<WebCore::DisplayList::FlushContext>()) {
BaseConcreteImageBuffer::flushContext();
auto identifier = item.get<WebCore::DisplayList::FlushContext>().identifier();
LOG_WITH_STREAM(SharedDisplayLists, stream << "Acknowledging Flush{" << identifier << "} in Image(" << m_renderingResourceIdentifier << ")");
m_remoteRenderingBackend.didFlush(identifier, m_renderingResourceIdentifier);
return true;
}
if (item.is<WebCore::DisplayList::MetaCommandChangeItemBuffer>()) {
auto nextBufferIdentifier = item.get<WebCore::DisplayList::MetaCommandChangeItemBuffer>().identifier();
LOG_WITH_STREAM(SharedDisplayLists, stream << "Switching to Items[" << nextBufferIdentifier << "]");
m_remoteRenderingBackend.setNextItemBufferToRead(nextBufferIdentifier, m_renderingResourceIdentifier);
return true;
}
return m_remoteRenderingBackend.applyMediaItem(item, context);
}
RemoteRenderingBackend& m_remoteRenderingBackend;
WebCore::RenderingResourceIdentifier m_renderingResourceIdentifier;
};
} // namespace WebKit
#endif // ENABLE(GPU_PROCESS)
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