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