129 lines
6.1 KiB
C
129 lines
6.1 KiB
C
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/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef CPP_EVS_SAMPLEDRIVER_AIDL_INCLUDE_EVSENUMERATOR_H
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#define CPP_EVS_SAMPLEDRIVER_AIDL_INCLUDE_EVSENUMERATOR_H
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#include "ConfigManager.h"
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#include "EvsGlDisplay.h"
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#include "EvsV4lCamera.h"
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#include <aidl/android/frameworks/automotive/display/ICarDisplayProxy.h>
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#include <aidl/android/hardware/automotive/evs/BnEvsEnumerator.h>
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#include <aidl/android/hardware/automotive/evs/CameraDesc.h>
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#include <aidl/android/hardware/automotive/evs/DeviceStatusType.h>
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#include <aidl/android/hardware/automotive/evs/IEvsCamera.h>
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#include <aidl/android/hardware/automotive/evs/IEvsEnumeratorStatusCallback.h>
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#include <aidl/android/hardware/automotive/evs/Stream.h>
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#include <utils/Thread.h>
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#include <atomic>
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#include <thread>
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#include <unordered_map>
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namespace aidl::android::hardware::automotive::evs::implementation {
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namespace aidlevs = ::aidl::android::hardware::automotive::evs;
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class EvsEnumerator final : public ::aidl::android::hardware::automotive::evs::BnEvsEnumerator {
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public:
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// Methods from ::aidl::android::hardware::automotive::evs::IEvsEnumerator
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::ndk::ScopedAStatus isHardware(bool* flag) override;
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::ndk::ScopedAStatus openCamera(const std::string& cameraId,
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const aidlevs::Stream& streamConfig,
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std::shared_ptr<aidlevs::IEvsCamera>* obj) override;
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::ndk::ScopedAStatus closeCamera(const std::shared_ptr<aidlevs::IEvsCamera>& obj) override;
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::ndk::ScopedAStatus getCameraList(std::vector<aidlevs::CameraDesc>* _aidl_return) override;
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::ndk::ScopedAStatus getStreamList(const aidlevs::CameraDesc& desc,
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std::vector<aidlevs::Stream>* _aidl_return) override;
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::ndk::ScopedAStatus openDisplay(int32_t displayId,
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std::shared_ptr<aidlevs::IEvsDisplay>* obj) override;
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::ndk::ScopedAStatus closeDisplay(const std::shared_ptr<aidlevs::IEvsDisplay>& obj) override;
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::ndk::ScopedAStatus getDisplayIdList(std::vector<uint8_t>* list) override;
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::ndk::ScopedAStatus getDisplayState(aidlevs::DisplayState* state) override;
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::ndk::ScopedAStatus registerStatusCallback(
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const std::shared_ptr<aidlevs::IEvsEnumeratorStatusCallback>& callback) override;
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::ndk::ScopedAStatus openUltrasonicsArray(
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const std::string& id, std::shared_ptr<aidlevs::IEvsUltrasonicsArray>* obj) override;
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::ndk::ScopedAStatus closeUltrasonicsArray(
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const std::shared_ptr<aidlevs::IEvsUltrasonicsArray>& obj) override;
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::ndk::ScopedAStatus getUltrasonicsArrayList(
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std::vector<aidlevs::UltrasonicsArrayDesc>* list) override;
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// Methods from ndk::ICInterface
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binder_status_t dump(int fd, const char** args, uint32_t numArgs) override;
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// Implementation details
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EvsEnumerator(const std::shared_ptr<
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::aidl::android::frameworks::automotive::display::ICarDisplayProxy>&
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proxyService);
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void notifyDeviceStatusChange(const std::string_view& deviceName,
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aidlevs::DeviceStatusType type);
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// Monitor hotplug devices
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static void EvsHotplugThread(std::shared_ptr<EvsEnumerator> service,
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std::atomic<bool>& running);
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private:
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struct CameraRecord {
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aidlevs::CameraDesc desc;
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std::weak_ptr<EvsV4lCamera> activeInstance;
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CameraRecord(const char* cameraId) : desc() { desc.id = cameraId; }
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};
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bool checkPermission();
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void closeCamera_impl(const std::shared_ptr<aidlevs::IEvsCamera>& pCamera,
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const std::string& cameraId);
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static bool qualifyCaptureDevice(const char* deviceName);
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static CameraRecord* findCameraById(const std::string& cameraId);
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static void enumerateCameras();
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static bool addCaptureDevice(const std::string& deviceName);
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static bool removeCaptureDevice(const std::string& deviceName);
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// Enumerate available displays and return an id of the internal display
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static uint64_t enumerateDisplays();
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// NOTE: All members values are static so that all clients operate on the same state
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// That is to say, this is effectively a singleton despite the fact that HIDL
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// constructs a new instance for each client.
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// Because our server has a single thread in the thread pool, these values are
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// never accessed concurrently despite potentially having multiple instance objects
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// using them.
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static std::unordered_map<std::string, CameraRecord> sCameraList;
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static std::weak_ptr<EvsGlDisplay> sActiveDisplay; // Weak pointer.
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// Object destructs if client dies.
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static std::mutex sLock; // Mutex on shared camera device list.
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static std::condition_variable sCameraSignal; // Signal on camera device addition.
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static std::unique_ptr<ConfigManager> sConfigManager; // ConfigManager
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static std::shared_ptr<::aidl::android::frameworks::automotive::display::ICarDisplayProxy>
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sDisplayProxy;
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static std::unordered_map<uint8_t, uint64_t> sDisplayPortList;
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uint64_t mInternalDisplayId;
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std::shared_ptr<aidlevs::IEvsEnumeratorStatusCallback> mCallback;
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// Dumpsys commands
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binder_status_t parseCommand(int fd, const std::vector<std::string>& options);
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binder_status_t cmdDump(int fd, const std::vector<std::string>& options);
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void cmdHelp(int fd);
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};
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} // namespace aidl::android::hardware::automotive::evs::implementation
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#endif // CPP_EVS_SAMPLEDRIVER_AIDL_INCLUDE_EVSENUMERATOR_H
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