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170 lines
6.7 KiB
170 lines
6.7 KiB
4 months ago
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/*
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* Copyright (C) 2019 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 ANDROID_AUTOMOTIVE_EVS_V1_1_HALCAMERA_H
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#define ANDROID_AUTOMOTIVE_EVS_V1_1_HALCAMERA_H
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#include "stats/CameraUsageStats.h"
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#include <deque>
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#include <list>
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#include <thread>
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#include <unordered_map>
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#include <android/hardware/automotive/evs/1.1/types.h>
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#include <android/hardware/automotive/evs/1.1/IEvsCamera.h>
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#include <android/hardware/automotive/evs/1.1/IEvsCameraStream.h>
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#include <utils/Mutex.h>
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#include <utils/SystemClock.h>
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using namespace ::android::hardware::automotive::evs::V1_1;
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using ::android::hardware::camera::device::V3_2::Stream;
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using ::android::hardware::Return;
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using ::android::hardware::hidl_handle;
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using ::android::hardware::automotive::evs::V1_0::EvsResult;
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using IEvsCamera_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsCamera;
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using IEvsCamera_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsCamera;
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using BufferDesc_1_0 = ::android::hardware::automotive::evs::V1_0::BufferDesc;
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using BufferDesc_1_1 = ::android::hardware::automotive::evs::V1_1::BufferDesc;
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using IEvsCameraStream_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsCameraStream;
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using IEvsCameraStream_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsCameraStream;
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namespace android {
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namespace automotive {
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namespace evs {
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namespace V1_1 {
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namespace implementation {
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class VirtualCamera; // From VirtualCamera.h
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// This class wraps the actual hardware IEvsCamera objects. There is a one to many
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// relationship between instances of this class and instances of the VirtualCamera class.
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// This class implements the IEvsCameraStream interface so that it can receive the video
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// stream from the hardware camera and distribute it to the associated VirtualCamera objects.
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class HalCamera : public IEvsCameraStream_1_1 {
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public:
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HalCamera(sp<IEvsCamera_1_1> hwCamera,
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std::string deviceId = "",
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int32_t recordId = 0,
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Stream cfg = {})
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: mHwCamera(hwCamera),
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mId(deviceId),
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mStreamConfig(cfg),
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mTimeCreatedMs(android::uptimeMillis()),
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mUsageStats(new CameraUsageStats(recordId)) {
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mCurrentRequests = &mFrameRequests[0];
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mNextRequests = &mFrameRequests[1];
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}
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virtual ~HalCamera();
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// Factory methods for client VirtualCameras
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sp<VirtualCamera> makeVirtualCamera();
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bool ownVirtualCamera(sp<VirtualCamera> virtualCamera);
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void disownVirtualCamera(sp<VirtualCamera> virtualCamera);
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// Implementation details
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sp<IEvsCamera_1_0> getHwCamera() { return mHwCamera; };
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unsigned getClientCount() { return mClients.size(); };
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std::string getId() { return mId; }
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Stream& getStreamConfig() { return mStreamConfig; }
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bool changeFramesInFlight(int delta);
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bool changeFramesInFlight(const hardware::hidl_vec<BufferDesc_1_1>& buffers,
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int* delta);
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void requestNewFrame(sp<VirtualCamera> virtualCamera,
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const int64_t timestamp);
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Return<EvsResult> clientStreamStarting();
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void clientStreamEnding(const VirtualCamera* client);
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Return<void> doneWithFrame(const BufferDesc_1_0& buffer);
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Return<void> doneWithFrame(const BufferDesc_1_1& buffer);
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Return<EvsResult> setMaster(sp<VirtualCamera> virtualCamera);
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Return<EvsResult> forceMaster(sp<VirtualCamera> virtualCamera);
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Return<EvsResult> unsetMaster(const VirtualCamera* virtualCamera);
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Return<EvsResult> setParameter(sp<VirtualCamera> virtualCamera,
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CameraParam id, int32_t& value);
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Return<EvsResult> getParameter(CameraParam id, int32_t& value);
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// Returns a snapshot of collected usage statistics
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CameraUsageStatsRecord getStats() const;
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// Returns active stream configuration
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Stream getStreamConfiguration() const;
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// Returns a string showing the current status
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std::string toString(const char* indent = "") const;
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// Returns a string showing current stream configuration
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static std::string toString(Stream configuration, const char* indent = "");
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// Methods from ::android::hardware::automotive::evs::V1_0::IEvsCameraStream follow.
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Return<void> deliverFrame(const BufferDesc_1_0& buffer) override;
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// Methods from ::android::hardware::automotive::evs::V1_1::IEvsCameraStream follow.
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Return<void> deliverFrame_1_1(const hardware::hidl_vec<BufferDesc_1_1>& buffer) override;
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Return<void> notify(const EvsEventDesc& event) override;
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private:
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sp<IEvsCamera_1_1> mHwCamera;
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std::list<wp<VirtualCamera>> mClients; // Weak pointers -> objects destruct if client dies
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enum {
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STOPPED,
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RUNNING,
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STOPPING,
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} mStreamState = STOPPED;
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struct FrameRecord {
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uint32_t frameId;
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uint32_t refCount;
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FrameRecord(uint32_t id) : frameId(id), refCount(0) {};
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};
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std::vector<FrameRecord> mFrames;
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wp<VirtualCamera> mPrimaryClient = nullptr;
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std::string mId;
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Stream mStreamConfig;
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struct FrameRequest {
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wp<VirtualCamera> client = nullptr;
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int64_t timestamp = -1;
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};
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void cancelCaptureRequestFromClientLocked(std::deque<FrameRequest>* requests,
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const VirtualCamera* client) REQUIRES(mFrameMutex);
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// synchronization
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mutable std::mutex mFrameMutex;
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std::deque<FrameRequest> mFrameRequests[2] GUARDED_BY(mFrameMutex);
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std::deque<FrameRequest>* mCurrentRequests PT_GUARDED_BY(mFrameMutex);
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std::deque<FrameRequest>* mNextRequests PT_GUARDED_BY(mFrameMutex);
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// Time this object was created
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int64_t mTimeCreatedMs;
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// usage statistics to collect
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android::sp<CameraUsageStats> mUsageStats;
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};
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} // namespace implementation
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} // namespace V1_1
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} // namespace evs
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} // namespace automotive
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} // namespace android
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#endif // ANDROID_AUTOMOTIVE_EVS_V1_1_HALCAMERA_H
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