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/*
* Copyright (C) 2020-2022 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. ``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
* 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 "RemoteDisplayListRecorderProxy.h"
#include <WebCore/ImageBuffer.h>
#include <wtf/Condition.h>
#include <wtf/Lock.h>
namespace WebKit {
class RemoteRenderingBackendProxy;
class RemoteImageBufferProxy : public WebCore::ImageBuffer {
public:
template<typename BackendType>
static RefPtr<RemoteImageBufferProxy> create(const WebCore::FloatSize& size, float resolutionScale, const WebCore::DestinationColorSpace& colorSpace, WebCore::PixelFormat pixelFormat, WebCore::RenderingPurpose purpose, RemoteRenderingBackendProxy& remoteRenderingBackendProxy, bool avoidBackendSizeCheck = false)
{
auto parameters = WebCore::ImageBufferBackend::Parameters { size, resolutionScale, colorSpace, pixelFormat, purpose };
if (!avoidBackendSizeCheck && BackendType::calculateSafeBackendSize(parameters).isEmpty())
return nullptr;
auto info = populateBackendInfo<BackendType>(parameters);
return adoptRef(new RemoteImageBufferProxy(parameters, info, remoteRenderingBackendProxy));
}
~RemoteImageBufferProxy();
WebCore::GraphicsContextFlushIdentifier lastSentFlushIdentifier() const { return m_sentFlushIdentifier; }
void waitForDidFlushOnSecondaryThread(WebCore::GraphicsContextFlushIdentifier);
private:
RemoteImageBufferProxy(const WebCore::ImageBufferBackend::Parameters&, const WebCore::ImageBufferBackend::Info&, RemoteRenderingBackendProxy&);
// It is safe to access m_receivedFlushIdentifier from the main thread without locking since it
// only gets modified on the main thread.
bool hasPendingFlush() const WTF_IGNORES_THREAD_SAFETY_ANALYSIS;
void didFlush(WebCore::GraphicsContextFlushIdentifier) final;
void backingStoreWillChange() final;
void waitForDidFlushWithTimeout();
WebCore::ImageBufferBackend* ensureBackendCreated() const final;
void clearBackend() final;
RefPtr<WebCore::NativeImage> copyNativeImage(WebCore::BackingStoreCopy = WebCore::CopyBackingStore) const final;
RefPtr<WebCore::NativeImage> copyNativeImageForDrawing(WebCore::BackingStoreCopy = WebCore::CopyBackingStore) const final;
RefPtr<WebCore::NativeImage> sinkIntoNativeImage() final;
RefPtr<WebCore::Image> filteredImage(WebCore::Filter&) final;
void drawConsuming(WebCore::GraphicsContext& destContext, const WebCore::FloatRect& destRect, const WebCore::FloatRect& srcRect, const WebCore::ImagePaintingOptions&) final;
WebCore::GraphicsContext& context() const final;
WebCore::GraphicsContext* drawingContext() final;
RefPtr<WebCore::PixelBuffer> getPixelBuffer(const WebCore::PixelBufferFormat& destinationFormat, const WebCore::IntRect& srcRect, const WebCore::ImageBufferAllocator&) const final;
void putPixelBuffer(const WebCore::PixelBuffer&, const WebCore::IntRect& srcRect, const WebCore::IntPoint& destPoint = { }, WebCore::AlphaPremultiplication = WebCore::AlphaPremultiplication::Premultiplied) final;
void convertToLuminanceMask() final;
void transformToColorSpace(const WebCore::DestinationColorSpace&) final;
bool prefersPreparationForDisplay() final { return true; }
void flushContext() final;
void flushDrawingContext() final;
bool flushDrawingContextAsync() final;
std::unique_ptr<WebCore::ThreadSafeImageBufferFlusher> createFlusher() final;
void prepareForBackingStoreChange();
WebCore::GraphicsContextFlushIdentifier m_sentFlushIdentifier;
Lock m_receivedFlushIdentifierLock;
Condition m_receivedFlushIdentifierChangedCondition;
WebCore::GraphicsContextFlushIdentifier m_receivedFlushIdentifier WTF_GUARDED_BY_LOCK(m_receivedFlushIdentifierLock); // Only modified on the main thread but may get queried on a secondary thread.
WeakPtr<RemoteRenderingBackendProxy> m_remoteRenderingBackendProxy;
RemoteDisplayListRecorderProxy m_remoteDisplayList;
bool m_needsFlush { false };
};
} // namespace WebKit
#endif // ENABLE(GPU_PROCESS)
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