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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef CC_BLIMP_REMOTE_COMPOSITOR_BRIDGE_H_ | |
| 6 #define CC_BLIMP_REMOTE_COMPOSITOR_BRIDGE_H_ | |
| 7 | |
| 8 #include "base/macros.h" | |
| 9 #include "base/memory/ref_counted.h" | |
| 10 #include "base/single_thread_task_runner.h" | |
| 11 #include "cc/base/cc_export.h" | |
| 12 | |
| 13 namespace cc { | |
| 14 | |
| 15 class CompositorProtoState; | |
| 16 class RemoteCompositorBridgeClient; | |
| 17 | |
| 18 // The RemoteCompositorBridge is the remote LTH's communication bridge to the | |
| 19 // compositor on the client that consumes the CompositorProtoState updates and | |
| 20 // performs the actual compositing work. It is responsible for scheduling | |
| 21 // when a state update should be sent to the client and providing back | |
| 22 // mutations made to the state on the client. | |
| 23 class CC_EXPORT RemoteCompositorBridge { | |
| 24 public: | |
| 25 RemoteCompositorBridge( | |
| 26 scoped_refptr<base::SingleThreadTaskRunner> compositor_main_task_runner); | |
| 27 | |
| 28 virtual ~RemoteCompositorBridge(); | |
| 29 | |
| 30 // Must be called exactly once before the RemoteCompositorBridge can be | |
| 31 // used. Once bound, the client is expected to outlive this class. | |
| 32 virtual void BindToClient(RemoteCompositorBridgeClient* client) = 0; | |
| 33 | |
| 34 // Notifies the bridge that a main frame update is required. | |
| 35 virtual void ScheduleMainFrame() = 0; | |
| 36 | |
| 37 // If a main frame update results in any mutations to the compositor state, | |
| 38 // the serialized compositor state is provided to the | |
| 39 // RemoteCompositorBridge. | |
| 40 virtual void ProcessCompositorStateUpdate( | |
| 41 std::unique_ptr<CompositorProtoState> compositor_proto_state) = 0; | |
| 42 | |
| 43 protected: | |
| 44 // The task runner for the compositor's main thread. The | |
| 45 // RemoteCompositorBridgeClient must be called on this task runner. | |
| 46 scoped_refptr<base::SingleThreadTaskRunner> compositor_main_task_runner_; | |
| 47 | |
| 48 private: | |
| 49 DISALLOW_COPY_AND_ASSIGN(RemoteCompositorBridge); | |
| 50 }; | |
| 51 | |
| 52 } // namespace cc | |
| 53 | |
| 54 #endif // CC_BLIMP_REMOTE_COMPOSITOR_BRIDGE_H_ | |
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