1 /*
2  * Copyright (c) 2024 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 DRAGGING_PLAYER_AGENT_H
17 #define DRAGGING_PLAYER_AGENT_H
18 
19 #include <atomic>
20 #include "dragging_player.h"
21 #include "common/status.h"
22 #include "osal/task/task.h"
23 
24 namespace OHOS {
25 namespace Media {
26 using namespace std;
27 using namespace Pipeline;
28 class DraggingPlayerAgent : public std::enable_shared_from_this<DraggingPlayerAgent> {
29 public:
30     static shared_ptr<DraggingPlayerAgent> Create();
31     static bool IsDraggingSupported(const shared_ptr<DemuxerFilter> &demuxer,
32         const shared_ptr<DecoderSurfaceFilter> &decoder);
DraggingPlayerAgent()33     DraggingPlayerAgent() {};
34     DraggingPlayerAgent(const DraggingPlayerAgent &) = delete;
35     DraggingPlayerAgent operator=(const DraggingPlayerAgent &) = delete;
36     ~DraggingPlayerAgent();
37     Status Init(const shared_ptr<DemuxerFilter> &demuxer, const shared_ptr<DecoderSurfaceFilter> &decoder,
38         std::string playerId);
39     void ConsumeVideoFrame(const std::shared_ptr<AVBuffer> avBuffer, uint32_t bufferIndex);
40     bool IsVideoStreamDiscardable(const std::shared_ptr<AVBuffer> avBuffer);
41     void UpdateSeekPos(int64_t seekMs);
42     void StopDragging(int64_t seekCnt);
43     void Release();
44 
45 private:
46     static bool loaded_;
47     static bool LoadSymbol();
48     static void *LoadLibrary();
49     static bool CheckSymbol(void *handler);
50     static mutex mtx_;
51     unique_ptr<OHOS::Media::Task> task_;
52     static void *handler_;
53     using CreateFunc = DraggingPlayer *(*)();
54     using DestroyFunc = void (*)(DraggingPlayer *);
55     using CheckSupportedFunc = bool (*) (DemuxerFilter *, DecoderSurfaceFilter *);
56     static CreateFunc createFunc_;
57     static DestroyFunc destroyFunc_;
58     static CheckSupportedFunc checkSupportedFunc_;
59     DraggingPlayer *draggingPlayer_ {nullptr};
60     shared_ptr<VideoStreamReadyCallback> videoStreamReadyCb_ {nullptr};
61     shared_ptr<VideoFrameReadyCallback> videoFrameReadyCb_ {nullptr};
62     shared_ptr<DemuxerFilter> demuxer_ {nullptr};
63     shared_ptr<DecoderSurfaceFilter> decoder_ {nullptr};
64     bool isReleased_ {false};
65     atomic<int64_t> seekCnt_ {0};
66     mutex draggingMutex_ {};
67     std::string threadName_ {};
68 };
69 
70 } // namespace Media
71 } // namespace OHOS
72 #endif // DRAGGING_PLAYER_AGENT_H