| // 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_ANDROID_SCOPED_SURFACE_REQUEST_MANAGER_H_ |
| #define CONTENT_BROWSER_ANDROID_SCOPED_SURFACE_REQUEST_MANAGER_H_ |
| |
| #include <unordered_map> |
| |
| #include "base/macros.h" |
| #include "base/memory/singleton.h" |
| #include "base/unguessable_token.h" |
| #include "content/common/content_export.h" |
| #include "gpu/ipc/common/android/scoped_surface_request_conduit.h" |
| #include "ui/gl/android/scoped_java_surface.h" |
| |
| namespace content { |
| |
| class CONTENT_EXPORT ScopedSurfaceRequestManager |
| : public gpu::ScopedSurfaceRequestConduit { |
| public: |
| static ScopedSurfaceRequestManager* GetInstance(); |
| |
| using ScopedSurfaceRequestCB = base::Callback<void(gl::ScopedJavaSurface)>; |
| |
| // Registers a request, and returns the |request_token| that should be used to |
| // call Fulfill at a later time. The caller is responsible for unregistering |
| // the request, if it is destroyed before the request is fulfilled. |
| // It is the requester's responsibility to check the validity of the final |
| // ScopedJavaSurface (as passing an empty surface is a valid operation). |
| // Must be called on the UI thread. |
| base::UnguessableToken RegisterScopedSurfaceRequest( |
| const ScopedSurfaceRequestCB& request_cb); |
| |
| // Unregisters a request registered under |request_token| if it exists, |
| // no-ops otherwise. |
| // Must be called on the UI thread. |
| void UnregisterScopedSurfaceRequest( |
| const base::UnguessableToken& request_token); |
| |
| // Unregisters and runs the request callback identified by |request_token| if |
| // one exists, no-ops otherwise. |
| // Passing an empty |surface| is a valid operation that will complete the |
| // request. |
| // Can be called from any thread. The request will be posted to the UI thread. |
| void FulfillScopedSurfaceRequest(const base::UnguessableToken& request_token, |
| gl::ScopedJavaSurface surface); |
| |
| // Implementation of ScopedSurfaceRequestConduit. |
| // To be used in the single process case. |
| // Can be called from any thread. |
| void ForwardSurfaceOwnerForSurfaceRequest( |
| const base::UnguessableToken& request_token, |
| const gpu::SurfaceOwner* surface_owner) override; |
| |
| void clear_requests_for_testing() { request_callbacks_.clear(); } |
| |
| int request_count_for_testing() { return request_callbacks_.size(); } |
| |
| private: |
| friend struct base::DefaultSingletonTraits<ScopedSurfaceRequestManager>; |
| |
| // Unregisters and returns the request identified by |request_token|. |
| ScopedSurfaceRequestCB GetAndUnregisterInternal( |
| const base::UnguessableToken& request_token); |
| |
| void CompleteRequestOnUiThread(const base::UnguessableToken& request_token, |
| gl::ScopedJavaSurface surface); |
| |
| // Map used to hold references to the registered callbacks. |
| std::unordered_map<base::UnguessableToken, |
| ScopedSurfaceRequestCB, |
| base::UnguessableTokenHash> |
| request_callbacks_; |
| |
| ScopedSurfaceRequestManager(); |
| ~ScopedSurfaceRequestManager() override; |
| |
| DISALLOW_COPY_AND_ASSIGN(ScopedSurfaceRequestManager); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_ANDROID_SCOPED_SURFACE_REQUEST_MANAGER_H_ |