| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_RENDERER_HOST_OFFSCREEN_CANVAS_SURFACE_IMPL_H_ |
| #define CONTENT_BROWSER_RENDERER_HOST_OFFSCREEN_CANVAS_SURFACE_IMPL_H_ |
| |
| #include "base/callback.h" |
| #include "base/compiler_specific.h" |
| #include "cc/surfaces/frame_sink_id.h" |
| #include "cc/surfaces/surface_info.h" |
| #include "components/viz/host/frame_sink_observer.h" |
| #include "components/viz/host/host_frame_sink_manager.h" |
| #include "content/common/content_export.h" |
| #include "mojo/public/cpp/bindings/binding.h" |
| #include "third_party/WebKit/public/platform/modules/offscreencanvas/offscreen_canvas_surface.mojom.h" |
| |
| namespace content { |
| |
| // The browser owned object for an offscreen canvas connection. Holds |
| // connections to both the renderer and frame sink manager. |
| class CONTENT_EXPORT OffscreenCanvasSurfaceImpl |
| : public blink::mojom::OffscreenCanvasSurface, |
| public NON_EXPORTED_BASE(viz::FrameSinkObserver) { |
| public: |
| using DestroyCallback = base::OnceCallback<void()>; |
| |
| OffscreenCanvasSurfaceImpl( |
| viz::HostFrameSinkManager* host_frame_sink_manager, |
| const cc::FrameSinkId& parent_frame_sink_id, |
| const cc::FrameSinkId& frame_sink_id, |
| blink::mojom::OffscreenCanvasSurfaceClientPtr client, |
| blink::mojom::OffscreenCanvasSurfaceRequest request, |
| DestroyCallback destroy_callback); |
| ~OffscreenCanvasSurfaceImpl() override; |
| |
| const cc::FrameSinkId& frame_sink_id() const { return frame_sink_id_; } |
| |
| const cc::FrameSinkId& parent_frame_sink_id() const { |
| return parent_frame_sink_id_; |
| } |
| |
| const cc::LocalSurfaceId& local_surface_id() const { |
| return local_surface_id_; |
| } |
| |
| // Creates a CompositorFrameSink connection to FrameSinkManager for an |
| // offscreen canvas client. The corresponding private interface will be owned |
| // here to control CompositorFrameSink lifetime. This should only ever be |
| // called once. |
| void CreateCompositorFrameSink(cc::mojom::CompositorFrameSinkClientPtr client, |
| cc::mojom::CompositorFrameSinkRequest request); |
| |
| // FrameSinkObserver implementation. |
| void OnSurfaceCreated(const cc::SurfaceInfo& surface_info) override; |
| |
| // blink::mojom::OffscreenCanvasSurface implementation. |
| void Require(const cc::SurfaceId& surface_id, |
| const cc::SurfaceSequence& sequence) override; |
| void Satisfy(const cc::SurfaceSequence& sequence) override; |
| |
| private: |
| // Registered as a callback for when |binding_| is closed. Will call |
| // |destroy_callback_|. |
| void OnSurfaceConnectionClosed(); |
| |
| viz::HostFrameSinkManager* const host_frame_sink_manager_; |
| |
| blink::mojom::OffscreenCanvasSurfaceClientPtr client_; |
| mojo::Binding<blink::mojom::OffscreenCanvasSurface> binding_; |
| |
| // To be called if |binding_| is closed. |
| DestroyCallback destroy_callback_; |
| |
| // Surface-related state |
| const cc::FrameSinkId frame_sink_id_; |
| cc::LocalSurfaceId local_surface_id_; |
| const cc::FrameSinkId parent_frame_sink_id_; |
| |
| bool has_created_compositor_frame_sink_ = false; |
| |
| DISALLOW_COPY_AND_ASSIGN(OffscreenCanvasSurfaceImpl); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_RENDERER_HOST_OFFSCREEN_CANVAS_SURFACE_IMPL_H_ |