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 HOS_CAMERA_BUFFER_TRACE_H
17 #define HOS_CAMERA_BUFFER_TRACE_H
18 
19 #include "camera.h"
20 #include <list>
21 #include <string>
22 
23 namespace OHOS::Camera {
24 enum {
25     INVALID_TRACKING_ID = -1,
26     NODE_IS_EMPTY,
27     NODE_IS_NOT_EMPTY,
28 };
29 
30 struct BufferTrackingMessage {
31     int32_t trackingId = -1;
32     uint64_t frameNumber = 0;
33     std::string nodeName = "";
34 
35     // isReturnBack = true indicate a buffer is recycled.
36     bool isReturnBack = false;
37 };
38 
39 class TrackingBuffer {
40 public:
TrackingBuffer(const uint64_t frameNumber)41     explicit TrackingBuffer(const uint64_t frameNumber)
42     {
43         frameNumber_ = frameNumber;
44     }
45     ~TrackingBuffer() = default;
46 
47     bool operator==(const TrackingBuffer& id)
48     {
49         return this->frameNumber_ == id.frameNumber_;
50     }
51 
GetFrameNumber()52     uint64_t GetFrameNumber() const
53     {
54         return frameNumber_;
55     }
56 
57 private:
58     TrackingBuffer() = default;
59 
60 private:
61     uint64_t frameNumber_ = 0;
62 };
63 
64 using BufferTraceGraph = std::list<std::pair<std::string, std::list<TrackingBuffer>>>;
65 } // namespace OHOS::Camera
66 #endif
67