1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef V4L2_CAMERA_HAL_METADATA_CONVERTER_INTERFACE_H_
18 #define V4L2_CAMERA_HAL_METADATA_CONVERTER_INTERFACE_H_
19 
20 namespace v4l2_camera_hal {
21 
22 // A ConverterInterface converts metadata values to V4L2 values vice-versa.
23 template <typename TMetadata, typename TV4L2>
24 class ConverterInterface {
25  public:
~ConverterInterface()26   virtual ~ConverterInterface(){};
27 
28   // Convert.
29   virtual int MetadataToV4L2(TMetadata value, TV4L2* conversion) = 0;
30   virtual int V4L2ToMetadata(TV4L2 value, TMetadata* conversion) = 0;
31 };
32 
33 }  // namespace v4l2_camera_hal
34 
35 #endif  // V4L2_CAMERA_HAL_METADATA_CONVERTER_INTERFACE_H_
36