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_IGNORED_CONTROL_DELEGATE_H_ 18 #define V4L2_CAMERA_HAL_METADATA_IGNORED_CONTROL_DELEGATE_H_ 19 20 #include "control_delegate_interface.h" 21 22 namespace v4l2_camera_hal { 23 24 // An IgnoredControlDelegate, as the name implies, 25 // has a fixed value and ignores all requests to set it. 26 template <typename T> 27 class IgnoredControlDelegate : public ControlDelegateInterface<T> { 28 public: 29 IgnoredControlDelegate(T value) : value_(value){}; 30 31 int GetValue(T* value) override { 32 *value = value_; 33 return 0; 34 }; 35 int SetValue(const T& value) override { return 0; }; 36 37 private: 38 const T value_; 39 }; 40 41 } // namespace v4l2_camera_hal 42 43 #endif // V4L2_CAMERA_HAL_METADATA_IGNORED_CONTROL_DELEGATE_H_ 44
