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 ANDROID_HARDWARE_CAMERA_PROVIDER_V2_4_LEGACYCAMERAPROVIDER_H 18 #define ANDROID_HARDWARE_CAMERA_PROVIDER_V2_4_LEGACYCAMERAPROVIDER_H 19 20 #include <android/hardware/camera/provider/2.4/ICameraProvider.h> 21 #include "hardware/camera_common.h" 22 #include "utils/Mutex.h" 23 #include "utils/SortedVector.h" 24 25 #include "CameraModule.h" 26 #include "VendorTagDescriptor.h" 27 28 namespace android { 29 namespace hardware { 30 namespace camera { 31 namespace provider { 32 namespace V2_4 { 33 namespace implementation { 34 35 using ::android::hardware::camera::common::V1_0::CameraDeviceStatus; 36 using ::android::hardware::camera::common::V1_0::Status; 37 using ::android::hardware::camera::common::V1_0::TorchModeStatus; 38 using ::android::hardware::camera::common::V1_0::VendorTag; 39 using ::android::hardware::camera::common::V1_0::VendorTagSection; 40 using ::android::hardware::camera::common::V1_0::helper::CameraModule; 41 using ::android::hardware::camera::common::V1_0::helper::VendorTagDescriptor; 42 using ::android::hardware::camera::provider::V2_4::ICameraProvider; 43 using ::android::hardware::camera::provider::V2_4::ICameraProviderCallback; 44 using ::android::hardware::Return; 45 using ::android::hardware::Void; 46 using ::android::hardware::hidl_vec; 47 using ::android::hardware::hidl_string; 48 using ::android::sp; 49 using ::android::Mutex; 50 51 /** 52 * The implementation of legacy wrapper CameraProvider 2.4, separated 53 * from the HIDL interface layer to allow for implementation reuse by later 54 * provider versions. 55 * 56 * This implementation supports cameras implemented via the legacy libhardware 57 * camera HAL definitions. 58 */ 59 struct LegacyCameraProviderImpl_2_4 : public camera_module_callbacks_t { 60 LegacyCameraProviderImpl_2_4(); 61 ~LegacyCameraProviderImpl_2_4(); 62 63 // Caller must use this method to check if CameraProvider ctor failed isInitFailedLegacyCameraProviderImpl_2_464 bool isInitFailed() { return mInitFailed; } 65 66 // Methods from ::android::hardware::camera::provider::V2_4::ICameraProvider follow. 67 Return<Status> setCallback(const sp<ICameraProviderCallback>& callback); 68 Return<void> getVendorTags(ICameraProvider::getVendorTags_cb _hidl_cb); 69 Return<void> getCameraIdList(ICameraProvider::getCameraIdList_cb _hidl_cb); 70 Return<void> isSetTorchModeSupported(ICameraProvider::isSetTorchModeSupported_cb _hidl_cb); 71 Return<void> getCameraDeviceInterface_V1_x( 72 const hidl_string& cameraDeviceName, 73 ICameraProvider::getCameraDeviceInterface_V1_x_cb _hidl_cb); 74 Return<void> getCameraDeviceInterface_V3_x( 75 const hidl_string& cameraDeviceName, 76 ICameraProvider::getCameraDeviceInterface_V3_x_cb _hidl_cb); 77 78 protected: 79 Mutex mCbLock; 80 sp<ICameraProviderCallback> mCallbacks = nullptr; 81 82 sp<CameraModule> mModule; 83 84 int mNumberOfLegacyCameras; 85 std::map<std::string, camera_device_status_t> mCameraStatusMap; // camera id -> status 86 std::map<std::string, bool> mOpenLegacySupported; // camera id -> open_legacy HAL1.0 supported 87 SortedVector<std::string> mCameraIds; // the "0"/"1" legacy camera Ids 88 // (cameraId string, hidl device name) pairs 89 SortedVector<std::pair<std::string, std::string>> mCameraDeviceNames; 90 91 int mPreferredHal3MinorVersion; 92 93 // Must be queried before using any APIs. 94 // APIs will only work when this returns true 95 bool mInitFailed; 96 bool initialize(); 97 98 hidl_vec<VendorTagSection> mVendorTagSections; 99 bool setUpVendorTags(); 100 int checkCameraVersion(int id, camera_info info); 101 102 // create HIDL device name from camera ID and legacy device version 103 std::string getHidlDeviceName(std::string cameraId, int deviceVersion); 104 105 // extract legacy camera ID/device version from a HIDL device name 106 static std::string getLegacyCameraId(const hidl_string& deviceName); 107 108 // convert conventional HAL status to HIDL Status 109 static Status getHidlStatus(int); 110 111 // static callback forwarding methods 112 static void sCameraDeviceStatusChange( 113 const struct camera_module_callbacks* callbacks, 114 int camera_id, 115 int new_status); 116 static void sTorchModeStatusChange( 117 const struct camera_module_callbacks* callbacks, 118 const char* camera_id, 119 int new_status); 120 121 void addDeviceNames(int camera_id, CameraDeviceStatus status = CameraDeviceStatus::PRESENT, 122 bool cam_new = false); 123 void removeDeviceNames(int camera_id); 124 125 }; 126 127 } // namespace implementation 128 } // namespace V2_4 129 } // namespace provider 130 } // namespace camera 131 } // namespace hardware 132 } // namespace android 133 134 #endif // ANDROID_HARDWARE_CAMERA_PROVIDER_V2_4_LEGACYCAMERAPROVIDER_H 135