| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef ANDROID_AUTOMOTIVE_EVS_V1_1_HALCAMERA_H |
| #define ANDROID_AUTOMOTIVE_EVS_V1_1_HALCAMERA_H |
| |
| #include "stats/CameraUsageStats.h" |
| |
| #include <deque> |
| #include <list> |
| #include <thread> |
| #include <unordered_map> |
| |
| #include <android/hardware/automotive/evs/1.1/types.h> |
| #include <android/hardware/automotive/evs/1.1/IEvsCamera.h> |
| #include <android/hardware/automotive/evs/1.1/IEvsCameraStream.h> |
| #include <utils/Mutex.h> |
| #include <utils/SystemClock.h> |
| |
| using namespace ::android::hardware::automotive::evs::V1_1; |
| using ::android::hardware::camera::device::V3_2::Stream; |
| using ::android::hardware::Return; |
| using ::android::hardware::hidl_handle; |
| using ::android::hardware::automotive::evs::V1_0::EvsResult; |
| using IEvsCamera_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsCamera; |
| using IEvsCamera_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsCamera; |
| using BufferDesc_1_0 = ::android::hardware::automotive::evs::V1_0::BufferDesc; |
| using BufferDesc_1_1 = ::android::hardware::automotive::evs::V1_1::BufferDesc; |
| using IEvsCameraStream_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsCameraStream; |
| using IEvsCameraStream_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsCameraStream; |
| |
| namespace android { |
| namespace automotive { |
| namespace evs { |
| namespace V1_1 { |
| namespace implementation { |
| |
| |
| class VirtualCamera; // From VirtualCamera.h |
| |
| |
| // This class wraps the actual hardware IEvsCamera objects. There is a one to many |
| // relationship between instances of this class and instances of the VirtualCamera class. |
| // This class implements the IEvsCameraStream interface so that it can receive the video |
| // stream from the hardware camera and distribute it to the associated VirtualCamera objects. |
| class HalCamera : public IEvsCameraStream_1_1 { |
| public: |
| HalCamera(sp<IEvsCamera_1_1> hwCamera, |
| std::string deviceId = "", |
| int32_t recordId = 0, |
| Stream cfg = {}) |
| : mHwCamera(hwCamera), |
| mId(deviceId), |
| mStreamConfig(cfg), |
| mTimeCreatedMs(android::uptimeMillis()), |
| mUsageStats(new CameraUsageStats(recordId)) { |
| mCurrentRequests = &mFrameRequests[0]; |
| mNextRequests = &mFrameRequests[1]; |
| } |
| |
| virtual ~HalCamera(); |
| |
| // Factory methods for client VirtualCameras |
| sp<VirtualCamera> makeVirtualCamera(); |
| bool ownVirtualCamera(sp<VirtualCamera> virtualCamera); |
| void disownVirtualCamera(sp<VirtualCamera> virtualCamera); |
| |
| // Implementation details |
| sp<IEvsCamera_1_0> getHwCamera() { return mHwCamera; }; |
| unsigned getClientCount() { return mClients.size(); }; |
| std::string getId() { return mId; } |
| Stream& getStreamConfig() { return mStreamConfig; } |
| bool changeFramesInFlight(int delta); |
| bool changeFramesInFlight(const hardware::hidl_vec<BufferDesc_1_1>& buffers, |
| int* delta); |
| void requestNewFrame(sp<VirtualCamera> virtualCamera, |
| const int64_t timestamp); |
| |
| Return<EvsResult> clientStreamStarting(); |
| void clientStreamEnding(const VirtualCamera* client); |
| Return<void> doneWithFrame(const BufferDesc_1_0& buffer); |
| Return<void> doneWithFrame(const BufferDesc_1_1& buffer); |
| Return<EvsResult> setMaster(sp<VirtualCamera> virtualCamera); |
| Return<EvsResult> forceMaster(sp<VirtualCamera> virtualCamera); |
| Return<EvsResult> unsetMaster(const VirtualCamera* virtualCamera); |
| Return<EvsResult> setParameter(sp<VirtualCamera> virtualCamera, |
| CameraParam id, int32_t& value); |
| Return<EvsResult> getParameter(CameraParam id, int32_t& value); |
| |
| // Returns a snapshot of collected usage statistics |
| CameraUsageStatsRecord getStats() const; |
| |
| // Returns active stream configuration |
| Stream getStreamConfiguration() const; |
| |
| // Returns a string showing the current status |
| std::string toString(const char* indent = "") const; |
| |
| // Returns a string showing current stream configuration |
| static std::string toString(Stream configuration, const char* indent = ""); |
| |
| // Methods from ::android::hardware::automotive::evs::V1_0::IEvsCameraStream follow. |
| Return<void> deliverFrame(const BufferDesc_1_0& buffer) override; |
| |
| // Methods from ::android::hardware::automotive::evs::V1_1::IEvsCameraStream follow. |
| Return<void> deliverFrame_1_1(const hardware::hidl_vec<BufferDesc_1_1>& buffer) override; |
| Return<void> notify(const EvsEventDesc& event) override; |
| |
| private: |
| sp<IEvsCamera_1_1> mHwCamera; |
| std::list<wp<VirtualCamera>> mClients; // Weak pointers -> objects destruct if client dies |
| |
| enum { |
| STOPPED, |
| RUNNING, |
| STOPPING, |
| } mStreamState = STOPPED; |
| |
| struct FrameRecord { |
| uint32_t frameId; |
| uint32_t refCount; |
| FrameRecord(uint32_t id) : frameId(id), refCount(0) {}; |
| }; |
| std::vector<FrameRecord> mFrames; |
| wp<VirtualCamera> mPrimaryClient = nullptr; |
| std::string mId; |
| Stream mStreamConfig; |
| |
| struct FrameRequest { |
| wp<VirtualCamera> client = nullptr; |
| int64_t timestamp = -1; |
| }; |
| |
| void cancelCaptureRequestFromClientLocked(std::deque<FrameRequest>* requests, |
| const VirtualCamera* client) REQUIRES(mFrameMutex); |
| |
| // synchronization |
| mutable std::mutex mFrameMutex; |
| std::deque<FrameRequest> mFrameRequests[2] GUARDED_BY(mFrameMutex); |
| std::deque<FrameRequest>* mCurrentRequests PT_GUARDED_BY(mFrameMutex); |
| std::deque<FrameRequest>* mNextRequests PT_GUARDED_BY(mFrameMutex); |
| |
| // Time this object was created |
| int64_t mTimeCreatedMs; |
| |
| // usage statistics to collect |
| android::sp<CameraUsageStats> mUsageStats; |
| }; |
| |
| } // namespace implementation |
| } // namespace V1_1 |
| } // namespace evs |
| } // namespace automotive |
| } // namespace android |
| |
| #endif // ANDROID_AUTOMOTIVE_EVS_V1_1_HALCAMERA_H |