1 /* 2 * Copyright (C) 2015 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 ANDROID_SERVERS_CAMERA_CAMERAMODULE_H 18 #define ANDROID_SERVERS_CAMERA_CAMERAMODULE_H 19 20 #include <hardware/camera.h> 21 #include <camera/CameraMetadata.h> 22 #include <utils/Mutex.h> 23 #include <utils/KeyedVector.h> 24 25 namespace android { 26 /** 27 * A wrapper class for HAL camera module. 28 * 29 * This class wraps camera_module_t returned from HAL to provide a wrapped 30 * get_camera_info implementation which CameraService generates some 31 * camera characteristics keys defined in newer HAL version on an older HAL. 32 */ 33 class CameraModule { 34 public: 35 CameraModule(camera_module_t *module); 36 virtual ~CameraModule(); 37 38 // Must be called after construction 39 // Returns OK on success, NO_INIT on failure 40 int init(); 41 42 int getCameraInfo(int cameraId, struct camera_info *info); 43 int getNumberOfCameras(void); 44 int open(const char* id, struct hw_device_t** device); 45 int openLegacy(const char* id, uint32_t halVersion, struct hw_device_t** device); 46 int setCallbacks(const camera_module_callbacks_t *callbacks); 47 bool isVendorTagDefined(); 48 void getVendorTagOps(vendor_tag_ops_t* ops); 49 int setTorchMode(const char* camera_id, bool enable); 50 uint16_t getModuleApiVersion(); 51 const char* getModuleName(); 52 uint16_t getHalApiVersion(); 53 const char* getModuleAuthor(); 54 // Only used by CameraModuleFixture native test. Do NOT use elsewhere. 55 void *getDso(); 56 57 private: 58 // Derive camera characteristics keys defined after HAL device version 59 static void deriveCameraCharacteristicsKeys(uint32_t deviceVersion, CameraMetadata &chars); 60 // Helper function to append available[request|result|chars]Keys 61 static void appendAvailableKeys(CameraMetadata &chars, 62 int32_t keyTag, const Vector<int32_t>& appendKeys); 63 status_t filterOpenErrorCode(status_t err); 64 camera_module_t *mModule; 65 KeyedVector<int, camera_info> mCameraInfoMap; 66 Mutex mCameraInfoLock; 67 }; 68 69 } // namespace android 70 71 #endif 72