| /* |
| * 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. ``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 |
| |
| #include "ImageBuffer.h" |
| #include "PixelBuffer.h" |
| |
| namespace WebCore { |
| |
| template<typename BackendType> |
| class ConcreteImageBuffer : public ImageBuffer { |
| public: |
| template<typename ImageBufferType = ConcreteImageBuffer, typename... Arguments> |
| static RefPtr<ImageBufferType> create(const FloatSize& size, float resolutionScale, const DestinationColorSpace& colorSpace, PixelFormat pixelFormat, const HostWindow* hostWindow, Arguments&&... arguments) |
| { |
| auto parameters = ImageBufferBackend::Parameters { size, resolutionScale, colorSpace, pixelFormat }; |
| auto backend = BackendType::create(parameters, hostWindow); |
| if (!backend) |
| return nullptr; |
| return adoptRef(new ImageBufferType(parameters, WTFMove(backend), std::forward<Arguments>(arguments)...)); |
| } |
| |
| template<typename ImageBufferType = ConcreteImageBuffer, typename... Arguments> |
| static RefPtr<ImageBufferType> create(const FloatSize& size, const GraphicsContext& context, Arguments&&... arguments) |
| { |
| auto parameters = ImageBufferBackend::Parameters { size, 1, DestinationColorSpace::SRGB(), PixelFormat::BGRA8 }; |
| auto backend = BackendType::create(parameters, context); |
| if (!backend) |
| return nullptr; |
| return adoptRef(new ImageBufferType(parameters, WTFMove(backend), std::forward<Arguments>(arguments)...)); |
| } |
| |
| RenderingMode renderingMode() const override { return BackendType::renderingMode; } |
| bool canMapBackingStore() const override { return BackendType::canMapBackingStore; } |
| |
| protected: |
| ConcreteImageBuffer(const ImageBufferBackend::Parameters& parameters, std::unique_ptr<BackendType>&& backend = nullptr, RenderingResourceIdentifier renderingResourceIdentifier = RenderingResourceIdentifier::generate()) |
| : m_parameters(parameters) |
| , m_backend(WTFMove(backend)) |
| , m_renderingResourceIdentifier(renderingResourceIdentifier) |
| { |
| } |
| |
| void setBackend(std::unique_ptr<ImageBufferBackend>&& backend) override |
| { |
| ASSERT(!m_backend); |
| m_backend = std::unique_ptr<BackendType> { static_cast<BackendType*>(backend.release()) }; |
| } |
| |
| void clearBackend() override { m_backend = nullptr; } |
| ImageBufferBackend* backend() const override { return m_backend.get(); } |
| ImageBufferBackend* ensureBackendCreated() const override { return m_backend.get(); } |
| |
| RenderingResourceIdentifier renderingResourceIdentifier() const override { return m_renderingResourceIdentifier; } |
| |
| GraphicsContext& context() const override |
| { |
| ASSERT(m_backend); |
| return m_backend->context(); |
| } |
| |
| void flushContext() override |
| { |
| if (auto* backend = ensureBackendCreated()) { |
| flushDrawingContext(); |
| backend->flushContext(); |
| } |
| } |
| |
| FloatSize logicalSize() const override { return m_parameters.logicalSize; } |
| IntSize truncatedLogicalSize() const override { return IntSize(m_parameters.logicalSize); } // You probably should be calling logicalSize() instead. |
| float resolutionScale() const override { return m_parameters.resolutionScale; } |
| DestinationColorSpace colorSpace() const override { return m_parameters.colorSpace; } |
| PixelFormat pixelFormat() const override { return m_parameters.pixelFormat; } |
| const ImageBufferBackend::Parameters& parameters() const override { return m_parameters; } |
| |
| IntSize backendSize() const override |
| { |
| if (auto* backend = ensureBackendCreated()) |
| return backend->backendSize(); |
| return { }; |
| } |
| |
| AffineTransform baseTransform() const override |
| { |
| return BackendType::calculateBaseTransform(m_parameters, BackendType::isOriginAtBottomLeftCorner); |
| } |
| |
| size_t memoryCost() const override |
| { |
| return BackendType::calculateMemoryCost(m_parameters); |
| } |
| |
| size_t externalMemoryCost() const override |
| { |
| return BackendType::calculateExternalMemoryCost(m_parameters); |
| } |
| |
| RefPtr<NativeImage> copyNativeImage(BackingStoreCopy copyBehavior = CopyBackingStore) const override |
| { |
| if (auto* backend = ensureBackendCreated()) { |
| const_cast<ConcreteImageBuffer&>(*this).flushDrawingContext(); |
| return backend->copyNativeImage(copyBehavior); |
| } |
| return nullptr; |
| } |
| |
| RefPtr<Image> copyImage(BackingStoreCopy copyBehavior = CopyBackingStore, PreserveResolution preserveResolution = PreserveResolution::No) const override |
| { |
| if (auto* backend = ensureBackendCreated()) { |
| const_cast<ConcreteImageBuffer&>(*this).flushDrawingContext(); |
| return backend->copyImage(copyBehavior, preserveResolution); |
| } |
| return nullptr; |
| } |
| |
| void draw(GraphicsContext& destContext, const FloatRect& destRect, const FloatRect& srcRect, const ImagePaintingOptions& options) override |
| { |
| if (auto* backend = ensureBackendCreated()) { |
| flushDrawingContext(); |
| backend->draw(destContext, destRect, srcRect, options); |
| } |
| } |
| |
| void drawPattern(GraphicsContext& destContext, const FloatRect& destRect, const FloatRect& srcRect, const AffineTransform& patternTransform, const FloatPoint& phase, const FloatSize& spacing, const ImagePaintingOptions& options) override |
| { |
| if (auto* backend = ensureBackendCreated()) { |
| flushDrawingContext(); |
| backend->drawPattern(destContext, destRect, srcRect, patternTransform, phase, spacing, options); |
| } |
| } |
| |
| RefPtr<NativeImage> sinkIntoNativeImage() override |
| { |
| if (auto* backend = ensureBackendCreated()) { |
| flushDrawingContext(); |
| return backend->sinkIntoNativeImage(); |
| } |
| return nullptr; |
| } |
| |
| RefPtr<Image> sinkIntoImage(PreserveResolution preserveResolution = PreserveResolution::No) override |
| { |
| if (auto* backend = ensureBackendCreated()) { |
| flushDrawingContext(); |
| return backend->sinkIntoImage(preserveResolution); |
| } |
| return nullptr; |
| } |
| |
| void drawConsuming(GraphicsContext& destContext, const FloatRect& destRect, const FloatRect& srcRect, const ImagePaintingOptions& options) override |
| { |
| if (auto* backend = ensureBackendCreated()) { |
| flushDrawingContext(); |
| backend->drawConsuming(destContext, destRect, srcRect, options); |
| } |
| } |
| |
| void clipToMask(GraphicsContext& destContext, const FloatRect& destRect) override |
| { |
| if (auto* backend = ensureBackendCreated()) { |
| flushContext(); |
| backend->clipToMask(destContext, destRect); |
| } |
| } |
| |
| void convertToLuminanceMask() override |
| { |
| if (auto* backend = ensureBackendCreated()) { |
| flushContext(); |
| backend->convertToLuminanceMask(); |
| } |
| } |
| |
| void transformToColorSpace(const DestinationColorSpace& newColorSpace) override |
| { |
| if (auto* backend = ensureBackendCreated()) { |
| flushDrawingContext(); |
| backend->transformToColorSpace(newColorSpace); |
| m_parameters.colorSpace = newColorSpace; |
| } |
| } |
| |
| String toDataURL(const String& mimeType, std::optional<double> quality, PreserveResolution preserveResolution) const override |
| { |
| if (auto* backend = ensureBackendCreated()) { |
| const_cast<ConcreteImageBuffer&>(*this).flushContext(); |
| return backend->toDataURL(mimeType, quality, preserveResolution); |
| } |
| return String(); |
| } |
| |
| Vector<uint8_t> toData(const String& mimeType, std::optional<double> quality = std::nullopt) const override |
| { |
| if (auto* backend = ensureBackendCreated()) { |
| const_cast<ConcreteImageBuffer&>(*this).flushContext(); |
| return backend->toData(mimeType, quality); |
| } |
| return { }; |
| } |
| |
| std::optional<PixelBuffer> getPixelBuffer(const PixelBufferFormat& outputFormat, const IntRect& srcRect) const override |
| { |
| if (auto* backend = ensureBackendCreated()) { |
| const_cast<ConcreteImageBuffer&>(*this).flushContext(); |
| return backend->getPixelBuffer(outputFormat, srcRect); |
| } |
| return std::nullopt; |
| } |
| |
| void putPixelBuffer(const PixelBuffer& pixelBuffer, const IntRect& srcRect, const IntPoint& destPoint = { }, AlphaPremultiplication destFormat = AlphaPremultiplication::Premultiplied) override |
| { |
| if (auto* backend = ensureBackendCreated()) { |
| flushContext(); |
| backend->putPixelBuffer(pixelBuffer, srcRect, destPoint, destFormat); |
| } |
| } |
| |
| PlatformLayer* platformLayer() const override |
| { |
| if (auto* backend = ensureBackendCreated()) |
| return backend->platformLayer(); |
| return nullptr; |
| } |
| |
| bool copyToPlatformTexture(GraphicsContextGL& context, GCGLenum target, PlatformGLObject destinationTexture, GCGLenum internalformat, bool premultiplyAlpha, bool flipY) const override |
| { |
| if (auto* backend = ensureBackendCreated()) |
| return backend->copyToPlatformTexture(context, target, destinationTexture, internalformat, premultiplyAlpha, flipY); |
| return false; |
| } |
| |
| bool isInUse() const override |
| { |
| if (auto* backend = ensureBackendCreated()) |
| return backend->isInUse(); |
| return false; |
| } |
| |
| void releaseGraphicsContext() override |
| { |
| if (auto* backend = ensureBackendCreated()) |
| return backend->releaseGraphicsContext(); |
| } |
| |
| VolatilityState setVolatile(bool isVolatile) override |
| { |
| if (auto* backend = ensureBackendCreated()) |
| return backend->setVolatile(isVolatile); |
| return VolatilityState::Valid; |
| } |
| |
| std::unique_ptr<ThreadSafeImageBufferFlusher> createFlusher() override |
| { |
| if (auto* backend = ensureBackendCreated()) |
| return backend->createFlusher(); |
| return nullptr; |
| } |
| |
| void releaseBufferToPool() override |
| { |
| if (auto* backend = ensureBackendCreated()) |
| backend->releaseBufferToPool(); |
| } |
| |
| ImageBufferBackend::Parameters m_parameters; |
| std::unique_ptr<BackendType> m_backend; |
| RenderingResourceIdentifier m_renderingResourceIdentifier; |
| }; |
| |
| } // namespace WebCore |
