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      1 /*
      2  * Copyright (C) 2015 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 "worker.h"
     22 
     23 #include <queue>
     24 
     25 namespace android {
     26 
     27 class VirtualCompositorWorker : public Worker {
     28  public:
     29   VirtualCompositorWorker();
     30   ~VirtualCompositorWorker() override;
     31 
     32   int Init();
     33   void QueueComposite(hwc_display_contents_1_t *dc);
     34 
     35  protected:
     36   void Routine() override;
     37 
     38  private:
     39   struct VirtualComposition {
     40     UniqueFd outbuf_acquire_fence;
     41     std::vector<UniqueFd> layer_acquire_fences;
     42     int release_timeline;
     43   };
     44 
     45   int CreateNextTimelineFence();
     46   int FinishComposition(int timeline);
     47   void Compose(std::unique_ptr<VirtualComposition> composition);
     48 
     49   std::queue<std::unique_ptr<VirtualComposition>> composite_queue_;
     50   int timeline_fd_;
     51   int timeline_;
     52   int timeline_current_;
     53 };
     54 }
     55 
     56 #endif
     57