1 /*
2  * Copyright (c) 2021 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef HDI_BACKEND_HDI_FRAMEBUFFER_SURFACE_H
17 #define HDI_BACKEND_HDI_FRAMEBUFFER_SURFACE_H
18 
19 #include <condition_variable>
20 #include <queue>
21 #include <refbase.h>
22 #include <surface.h>
23 #include <iconsumer_surface.h>
24 #include <sync_fence.h>
25 #include "surface_buffer.h"
26 
27 namespace OHOS {
28 namespace Rosen {
29 struct FrameBufferEntry {
FrameBufferEntryFrameBufferEntry30     FrameBufferEntry(sptr<SurfaceBuffer> buf, sptr<SyncFence> fence, int64_t timeStamp, const Rect& damage)
31         : buffer(std::move(buf)), acquireFence(std::move(fence)), acquireTime(timeStamp), damageRect(damage)
32     {
33     }
34     ~FrameBufferEntry() noexcept = default;
35 
36     sptr<SurfaceBuffer> buffer;
37     sptr<SyncFence> acquireFence;
38     int64_t acquireTime = 0;
39     Rect damageRect = {0};
40 };
41 
42 class HdiFramebufferSurface : public IBufferConsumerListener {
43 public:
44     static sptr<HdiFramebufferSurface> CreateFramebufferSurface();
45     sptr<OHOS::Surface> GetSurface();
46     std::unique_ptr<FrameBufferEntry> GetFramebuffer();
47     uint32_t GetBufferQueueSize();
48     int32_t ReleaseFramebuffer(
49         sptr<SurfaceBuffer> &buffer, const sptr<SyncFence> &releaseFence);
50     void ClearFrameBuffer();
51     void Dump(std::string &result);
52 
53 private:
54     mutable std::mutex mutex_;
55     std::condition_variable bufferCond_;
56     sptr<OHOS::IConsumerSurface> consumerSurface_ = nullptr;
57     sptr<OHOS::Surface> producerSurface_ = nullptr;
58     std::queue<std::unique_ptr<FrameBufferEntry>> availableBuffers_;
59 
60     static constexpr uint32_t MAX_BUFFER_SIZE = 3;
61 
62     HdiFramebufferSurface();
63     virtual ~HdiFramebufferSurface() noexcept;
64 
65     void OnBufferAvailable() override;
66     OHOS::SurfaceError SetBufferQueueSize(uint32_t bufferSize);
67     OHOS::SurfaceError CreateSurface(sptr<HdiFramebufferSurface> &fbSurface);
68 };
69 } // namespace Rosen
70 } // namespace OHOS
71 
72 #endif // HDI_BACKEND_HDI_FRAMEBUFFER_SURFACE_H
73