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This provides the framework to allow ISurfaceProvider objects to implement WebRenderImageProvider. It is straightforward for rasterized providers (DecodedSurfaceProvider, and SimpleSurfaceProvider). Later parts in this series will provide the necessary changes for blob recordings and for animatedi images. Differential Revision: https://phabricator.services.mozilla.com/D126597
66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_IMAGE_WEBRENDERIMAGEPROVIDER_H_
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#define MOZILLA_IMAGE_WEBRENDERIMAGEPROVIDER_H_
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#include "nsISupportsImpl.h"
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namespace mozilla {
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namespace layers {
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class RenderRootStateManager;
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}
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namespace wr {
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class IpcResourceUpdateQueue;
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struct ExternalImageId;
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struct ImageKey;
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} // namespace wr
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namespace image {
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class ImageResource;
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using ImageProviderId = uint32_t;
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class WebRenderImageProvider {
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public:
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// Subclasses may or may not be XPCOM classes, so we just require that they
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// implement AddRef and Release.
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NS_INLINE_DECL_PURE_VIRTUAL_REFCOUNTING
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ImageProviderId GetProviderId() const { return mProviderId; }
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static ImageProviderId AllocateProviderId();
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/**
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* Generate an ImageKey for the given frame.
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* @param aSurface The current frame. This should match what was cached via
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* SetCurrentFrame, but if it does not, it will need to
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* regenerate the cached ImageKey.
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*/
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virtual nsresult UpdateKey(layers::RenderRootStateManager* aManager,
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wr::IpcResourceUpdateQueue& aResources,
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wr::ImageKey& aKey) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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/**
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* Invalidate if a blob recording, requiring it to be regenerated.
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*/
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virtual void InvalidateRecording() {}
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protected:
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WebRenderImageProvider(const ImageResource* aImage);
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private:
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ImageProviderId mProviderId;
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};
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} // namespace image
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} // namespace mozilla
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#endif /* MOZILLA_IMAGE_WEBRENDERIMAGEPROVIDER_H_ */
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