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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MOZILLA_IMAGE_WEBRENDERIMAGEPROVIDER_H_
#define MOZILLA_IMAGE_WEBRENDERIMAGEPROVIDER_H_
#include "nsISupportsImpl.h"
namespace mozilla {
namespace layers {
class RenderRootStateManager;
}
namespace wr {
class IpcResourceUpdateQueue;
struct ExternalImageId;
struct ImageKey;
} // namespace wr
namespace image {
class ImageResource;
using ImageProviderId = uint32_t;
class WebRenderImageProvider {
public:
// Subclasses may or may not be XPCOM classes, so we just require that they
// implement AddRef and Release.
NS_INLINE_DECL_PURE_VIRTUAL_REFCOUNTING
ImageProviderId GetProviderId() const { return mProviderId; }
static ImageProviderId AllocateProviderId();
/**
* Generate an ImageKey for the given frame.
* @param aSurface The current frame. This should match what was cached via
* SetCurrentFrame, but if it does not, it will need to
* regenerate the cached ImageKey.
*/
virtual nsresult UpdateKey(layers::RenderRootStateManager* aManager,
wr::IpcResourceUpdateQueue& aResources,
wr::ImageKey& aKey) {
return NS_ERROR_NOT_AVAILABLE;
}
/**
* Invalidate if a blob recording or simple surface provider (both are only
* used by vector images), requiring it to be regenerated.
*/
virtual void InvalidateSurface() {}
protected:
WebRenderImageProvider(const ImageResource* aImage);
private:
ImageProviderId mProviderId;
};
} // namespace image
} // namespace mozilla
#endif /* MOZILLA_IMAGE_WEBRENDERIMAGEPROVIDER_H_ */
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