1 /*
2  * Copyright (c) 2022-2023 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 OHOS_DATA_BUFFER_H
17 #define OHOS_DATA_BUFFER_H
18 
19 #include <cstdint>
20 #include <cstddef>
21 #include <vector>
22 
23 #include "dscreen_constants.h"
24 
25 namespace OHOS {
26 namespace DistributedHardware {
27 struct DirtyRect {
28     int32_t xPos;
29     int32_t yPos;
30     int32_t width;
31     int32_t height;
32     int32_t dirtySize;
33 };
34 class DataBuffer {
35 public:
36     explicit DataBuffer(size_t capacity);
37     ~DataBuffer();
38 
39     size_t Capacity() const;
40     uint8_t *Data() const;
41     void SetSize(size_t size);
42     void SetDataType(uint8_t dataType);
43     uint8_t DataType();
44     void SetDataNumber(size_t number);
45     size_t DataNumber();
46     void ResetCapcity(size_t capacity);
47     void AddData(size_t dataSize, unsigned char* &inputData);
48     void AddDirtyRect(DirtyRect rec);
49     std::vector<DirtyRect> GetDirtyRectVec();
50     int32_t GetData(int32_t offset, int32_t datasize, uint8_t* &output);
51 private:
52     static const constexpr char *DSCREEN_LOG_TAG = "DataBuffer";
53     std::vector<DirtyRect> dirtyRectVec_;
54     size_t capacity_ = 0;
55     uint8_t *data_ = nullptr;
56     uint8_t dataType_ = 0;
57     size_t frameNumber_ = 0;
58 };
59 } // namespace DistributedHardware
60 } // namespace OHOS
61 #endif