1 /* 2 * Copyright (C) 2023 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_COMPANION_VIRTUALCAMERA_VIRTUALCAMERASESSION_H 18 #define ANDROID_COMPANION_VIRTUALCAMERA_VIRTUALCAMERASESSION_H 19 20 #include <atomic> 21 #include <memory> 22 #include <set> 23 24 #include "VirtualCameraRenderThread.h" 25 #include "VirtualCameraSessionContext.h" 26 #include "aidl/android/companion/virtualcamera/IVirtualCameraCallback.h" 27 #include "aidl/android/hardware/camera/device/BnCameraDeviceSession.h" 28 #include "aidl/android/hardware/camera/device/CameraMetadata.h" 29 #include "aidl/android/hardware/camera/device/ICameraDeviceCallback.h" 30 #include "utils/Mutex.h" 31 32 namespace android { 33 34 template <typename T, typename U> 35 struct AidlMessageQueue; 36 namespace companion { 37 namespace virtualcamera { 38 39 class VirtualCameraDevice; 40 41 // Implementation of ICameraDeviceSession AIDL interface to allow camera 42 // framework to read image data from open virtual camera device. This class 43 // encapsulates possibly several image streams for the same session. 44 class VirtualCameraSession 45 : public ::aidl::android::hardware::camera::device::BnCameraDeviceSession { 46 public: 47 // Construct new virtual camera session. 48 // When virtualCameraClientCallback is null, the input surface will be filled 49 // with test pattern. 50 VirtualCameraSession( 51 std::shared_ptr<VirtualCameraDevice> mCameraDevice, 52 std::shared_ptr< 53 ::aidl::android::hardware::camera::device::ICameraDeviceCallback> 54 cameraDeviceCallback, 55 std::shared_ptr< 56 ::aidl::android::companion::virtualcamera::IVirtualCameraCallback> 57 virtualCameraClientCallback = nullptr); 58 59 virtual ~VirtualCameraSession() override = default; 60 61 ndk::ScopedAStatus close() override EXCLUDES(mLock); 62 63 ndk::ScopedAStatus configureStreams( 64 const ::aidl::android::hardware::camera::device::StreamConfiguration& 65 in_requestedConfiguration, 66 std::vector<::aidl::android::hardware::camera::device::HalStream>* 67 _aidl_return) override EXCLUDES(mLock); 68 69 ndk::ScopedAStatus constructDefaultRequestSettings( 70 ::aidl::android::hardware::camera::device::RequestTemplate in_type, 71 ::aidl::android::hardware::camera::device::CameraMetadata* _aidl_return) 72 override; 73 74 ndk::ScopedAStatus flush() override EXCLUDES(mLock); 75 76 ndk::ScopedAStatus getCaptureRequestMetadataQueue( 77 ::aidl::android::hardware::common::fmq::MQDescriptor< 78 int8_t, ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>* 79 _aidl_return) override; 80 81 ndk::ScopedAStatus getCaptureResultMetadataQueue( 82 ::aidl::android::hardware::common::fmq::MQDescriptor< 83 int8_t, ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>* 84 _aidl_return) override; 85 86 ndk::ScopedAStatus isReconfigurationRequired( 87 const ::aidl::android::hardware::camera::device::CameraMetadata& 88 in_oldSessionParams, 89 const ::aidl::android::hardware::camera::device::CameraMetadata& 90 in_newSessionParams, 91 bool* _aidl_return) override; 92 93 ndk::ScopedAStatus processCaptureRequest( 94 const std::vector<::aidl::android::hardware::camera::device::CaptureRequest>& 95 in_requests, 96 const std::vector<::aidl::android::hardware::camera::device::BufferCache>& 97 in_cachesToRemove, 98 int32_t* _aidl_return) override; 99 100 ndk::ScopedAStatus signalStreamFlush(const std::vector<int32_t>& in_streamIds, 101 int32_t in_streamConfigCounter) override; 102 103 ndk::ScopedAStatus switchToOffline( 104 const std::vector<int32_t>& in_streamsToKeep, 105 ::aidl::android::hardware::camera::device::CameraOfflineSessionInfo* 106 out_offlineSessionInfo, 107 std::shared_ptr< 108 ::aidl::android::hardware::camera::device::ICameraOfflineSession>* 109 _aidl_return) override; 110 111 ndk::ScopedAStatus repeatingRequestEnd( 112 int32_t in_frameNumber, const std::vector<int32_t>& in_streamIds) override; 113 114 std::set<int> getStreamIds() const EXCLUDES(mLock); 115 116 private: 117 ndk::ScopedAStatus processCaptureRequest( 118 const ::aidl::android::hardware::camera::device::CaptureRequest& request) 119 EXCLUDES(mLock); 120 121 std::weak_ptr<VirtualCameraDevice> mCameraDevice; 122 123 mutable std::mutex mLock; 124 125 std::shared_ptr<::aidl::android::hardware::camera::device::ICameraDeviceCallback> 126 mCameraDeviceCallback GUARDED_BY(mLock); 127 128 const std::shared_ptr< 129 ::aidl::android::companion::virtualcamera::IVirtualCameraCallback> 130 mVirtualCameraClientCallback; 131 132 VirtualCameraSessionContext mSessionContext; 133 134 using RequestMetadataQueue = AidlMessageQueue< 135 int8_t, ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>; 136 std::unique_ptr<RequestMetadataQueue> mRequestMetadataQueue; 137 138 using ResultMetadataQueue = AidlMessageQueue< 139 int8_t, ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>; 140 std::shared_ptr<ResultMetadataQueue> mResultMetadataQueue; 141 142 aidl::android::hardware::camera::device::CameraMetadata mCurrentRequestMetadata 143 GUARDED_BY(mLock); 144 145 std::unique_ptr<VirtualCameraRenderThread> mRenderThread GUARDED_BY(mLock); 146 147 int mCurrentInputStreamId GUARDED_BY(mLock); 148 }; 149 150 } // namespace virtualcamera 151 } // namespace companion 152 } // namespace android 153 154 #endif // ANDROID_SERVICES_VIRTUAL_CAMERA_VIRTUALCAMERASESSION_H 155