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 ABS_IMAGE_FORMAT_AGENT_H
17 #define ABS_IMAGE_FORMAT_AGENT_H
18 
19 #include <string>
20 #include "image_plugin_type.h"
21 #include "plugin_service.h"
22 
23 namespace OHOS {
24 namespace ImagePlugin {
25 class AbsImageFormatAgent {
26 public:
27     // get the image encoded format supported by this class.
28     virtual std::string GetFormatType() = 0;
29 
30     // get the header size of the encoded format.
31     // it is used to determine the size of the image data that
32     // needs to be passed to the function of CheckFormat().
33     virtual uint32_t GetHeaderSize() = 0;
34 
35     // check if the image is in this encoded format, if it returns true.
36     virtual bool CheckFormat(const void *headerData, uint32_t dataSize) = 0;
37 
38     // define multiple subservices for this interface.
39     static constexpr uint16_t SERVICE_DEFAULT = 0;
40 };
41 } // namespace ImagePlugin
42 } // namespace OHOS
43 
44 DECLARE_INTERFACE(OHOS::ImagePlugin::AbsImageFormatAgent, IMAGE_FORMAT_AGENT_IID)
45 
46 #endif // ABS_IMAGE_FORMAT_AGENT_H
47