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 CAMERA_COMMON_1_0_CAMERAMODULE_H 18 #define CAMERA_COMMON_1_0_CAMERAMODULE_H 19 20 #include <string> 21 #include <unordered_set> 22 23 #include <hardware/camera.h> 24 #include <utils/KeyedVector.h> 25 #include <utils/Mutex.h> 26 #include <utils/RefBase.h> 27 28 #include "CameraMetadata.h" 29 30 namespace android { 31 namespace hardware { 32 namespace camera { 33 namespace common { 34 namespace helper { 35 /** 36 * A wrapper class for HAL camera module. 37 * 38 * This class wraps camera_module_t returned from HAL to provide a wrapped 39 * get_camera_info implementation which CameraService generates some 40 * camera characteristics keys defined in newer HAL version on an older HAL. 41 */ 42 class CameraModule : public RefBase { 43 public: 44 explicit CameraModule(camera_module_t* module); 45 virtual ~CameraModule(); 46 47 // Must be called after construction 48 // Returns OK on success, NO_INIT on failure 49 int init(); 50 51 int getCameraInfo(int cameraId, struct camera_info* info); 52 int getDeviceVersion(int cameraId); 53 int getNumberOfCameras(void); 54 int open(const char* id, struct hw_device_t** device); 55 bool isOpenLegacyDefined() const; 56 int openLegacy(const char* id, uint32_t halVersion, struct hw_device_t** device); 57 int setCallbacks(const camera_module_callbacks_t* callbacks); 58 bool isVendorTagDefined() const; 59 void getVendorTagOps(vendor_tag_ops_t* ops); 60 bool isSetTorchModeSupported() const; 61 int setTorchMode(const char* camera_id, bool enable); 62 uint16_t getModuleApiVersion() const; 63 const char* getModuleName() const; 64 uint16_t getHalApiVersion() const; 65 const char* getModuleAuthor() const; 66 // Only used by CameraModuleFixture native test. Do NOT use elsewhere. 67 void* getDso(); 68 // Only used by CameraProvider 69 void removeCamera(int cameraId); 70 int getPhysicalCameraInfo(int physicalCameraId, camera_metadata_t** physicalInfo); 71 int isStreamCombinationSupported(int cameraId, camera_stream_combination_t* streams); 72 void notifyDeviceStateChange(uint64_t deviceState); 73 74 static bool isLogicalMultiCamera(const common::helper::CameraMetadata& metadata, 75 std::unordered_set<std::string>* physicalCameraIds); 76 77 private: 78 // Derive camera characteristics keys defined after HAL device version 79 static void deriveCameraCharacteristicsKeys(uint32_t deviceVersion, CameraMetadata& chars); 80 // Helper function to append available[request|result|chars]Keys 81 static void appendAvailableKeys(CameraMetadata& chars, int32_t keyTag, 82 const Vector<int32_t>& appendKeys); 83 status_t filterOpenErrorCode(status_t err); 84 camera_module_t* mModule; 85 int mNumberOfCameras; 86 KeyedVector<int, camera_info> mCameraInfoMap; 87 KeyedVector<int, int> mDeviceVersionMap; 88 KeyedVector<int, camera_metadata_t*> mPhysicalCameraInfoMap; 89 Mutex mCameraInfoLock; 90 }; 91 92 } // namespace helper 93 94 // NOTE: Deprecated namespace. This namespace should no longer be used for the following symbols 95 namespace V1_0::helper { 96 // Export symbols to the old namespace to preserve compatibility 97 typedef android::hardware::camera::common::helper::CameraModule CameraModule; 98 } // namespace V1_0::helper 99 100 } // namespace common 101 } // namespace camera 102 } // namespace hardware 103 } // namespace android 104 105 #endif 106