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      1 /*
      2  * Copyright (C) 2015-2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ANDROID_VIRTUAL_COMPOSITOR_WORKER_H_
     18 #define ANDROID_VIRTUAL_COMPOSITOR_WORKER_H_
     19 
     20 #include "drmhwcomposer.h"
     21 #include "queue_worker.h"
     22 
     23 namespace android {
     24 
     25 struct VirtualComposition {
     26   UniqueFd outbuf_acquire_fence;
     27   std::vector<UniqueFd> layer_acquire_fences;
     28   int release_timeline;
     29 };
     30 
     31 class VirtualCompositorWorker : public QueueWorker<VirtualComposition> {
     32  public:
     33   VirtualCompositorWorker();
     34   ~VirtualCompositorWorker() override;
     35 
     36   int Init();
     37   void QueueComposite(hwc_display_contents_1_t *dc);
     38 
     39  protected:
     40   void ProcessWork(std::unique_ptr<VirtualComposition> composition);
     41 
     42  private:
     43   int CreateNextTimelineFence();
     44   int FinishComposition(int timeline);
     45 
     46   int timeline_fd_;
     47   int timeline_;
     48   int timeline_current_;
     49 };
     50 }
     51 
     52 #endif
     53