1 /* 2 * Copyright (C) 2018 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_DEVICE_V3_4_EXTCAMERADEVICE_H 18 #define ANDROID_HARDWARE_CAMERA_DEVICE_V3_4_EXTCAMERADEVICE_H 19 20 #include "utils/Mutex.h" 21 #include "CameraMetadata.h" 22 23 #include <android/hardware/camera/device/3.2/ICameraDevice.h> 24 #include <hidl/Status.h> 25 #include <hidl/MQDescriptor.h> 26 #include "ExternalCameraDeviceSession.h" 27 28 namespace android { 29 namespace hardware { 30 namespace camera { 31 namespace device { 32 namespace V3_4 { 33 namespace implementation { 34 35 using namespace ::android::hardware::camera::device; 36 using ::android::hardware::camera::device::V3_2::ICameraDevice; 37 using ::android::hardware::camera::device::V3_2::ICameraDeviceCallback; 38 using ::android::hardware::camera::common::V1_0::CameraResourceCost; 39 using ::android::hardware::camera::common::V1_0::TorchMode; 40 using ::android::hardware::camera::common::V1_0::Status; 41 using ::android::hardware::camera::external::common::ExternalCameraConfig; 42 using ::android::hardware::camera::external::common::Size; 43 using ::android::hardware::Return; 44 using ::android::hardware::Void; 45 using ::android::hardware::hidl_vec; 46 using ::android::hardware::hidl_string; 47 using ::android::sp; 48 49 /* 50 * The camera device HAL implementation is opened lazily (via the open call) 51 */ 52 struct ExternalCameraDevice : public ICameraDevice { 53 54 // Called by external camera provider HAL. 55 // Provider HAL must ensure the uniqueness of CameraDevice object per cameraId, or there could 56 // be multiple CameraDevice trying to access the same physical camera. Also, provider will have 57 // to keep track of all CameraDevice objects in order to notify CameraDevice when the underlying 58 // camera is detached. 59 ExternalCameraDevice(const std::string& cameraId, const ExternalCameraConfig& cfg); 60 ~ExternalCameraDevice(); 61 62 // Caller must use this method to check if CameraDevice ctor failed 63 bool isInitFailed(); 64 65 /* Methods from ::android::hardware::camera::device::V3_2::ICameraDevice follow. */ 66 // The following method can be called without opening the actual camera device 67 Return<void> getResourceCost(getResourceCost_cb _hidl_cb) override; 68 69 Return<void> getCameraCharacteristics(getCameraCharacteristics_cb _hidl_cb) override; 70 71 Return<Status> setTorchMode(TorchMode) override; 72 73 // Open the device HAL and also return a default capture session 74 Return<void> open(const sp<ICameraDeviceCallback>&, open_cb) override; 75 76 // Forward the dump call to the opened session, or do nothing 77 Return<void> dumpState(const ::android::hardware::hidl_handle&) override; 78 /* End of Methods from ::android::hardware::camera::device::V3_2::ICameraDevice */ 79 80 protected: 81 // Init supported w/h/format/fps in mSupportedFormats. Caller still owns fd 82 void initSupportedFormatsLocked(int fd); 83 84 status_t initCameraCharacteristics(); 85 // Init non-device dependent keys 86 status_t initDefaultCharsKeys(::android::hardware::camera::common::V1_0::helper::CameraMetadata*); 87 // Init camera control chars keys. Caller still owns fd 88 status_t initCameraControlsCharsKeys(int fd, 89 ::android::hardware::camera::common::V1_0::helper::CameraMetadata*); 90 // Init camera output configuration related keys. Caller still owns fd 91 status_t initOutputCharsKeys(int fd, 92 ::android::hardware::camera::common::V1_0::helper::CameraMetadata*); 93 94 static void getFrameRateList(int fd, double fpsUpperBound, SupportedV4L2Format* format); 95 96 // Get candidate supported formats list of input cropping type. 97 static std::vector<SupportedV4L2Format> getCandidateSupportedFormatsLocked( 98 int fd, CroppingType cropType, 99 const std::vector<ExternalCameraConfig::FpsLimitation>& fpsLimits); 100 // Trim supported format list by the cropping type. Also sort output formats by width/height 101 static void trimSupportedFormats(CroppingType cropType, 102 /*inout*/std::vector<SupportedV4L2Format>* pFmts); 103 104 Mutex mLock; 105 bool mInitFailed = false; 106 std::string mCameraId; 107 const ExternalCameraConfig& mCfg; 108 std::vector<SupportedV4L2Format> mSupportedFormats; 109 CroppingType mCroppingType; 110 111 wp<ExternalCameraDeviceSession> mSession = nullptr; 112 113 ::android::hardware::camera::common::V1_0::helper::CameraMetadata mCameraCharacteristics; 114 }; 115 116 } // namespace implementation 117 } // namespace V3_4 118 } // namespace device 119 } // namespace camera 120 } // namespace hardware 121 } // namespace android 122 123 #endif // ANDROID_HARDWARE_CAMERA_DEVICE_V3_4_EXTCAMERADEVICE_H 124
