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91 lines
3.0 KiB
91 lines
3.0 KiB
4 months ago
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/*
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* Copyright (C) 2016 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_0_HALCAMERA_H
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#define ANDROID_AUTOMOTIVE_EVS_V1_0_HALCAMERA_H
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#include <android/hardware/automotive/evs/1.0/types.h>
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#include <android/hardware/automotive/evs/1.0/IEvsCamera.h>
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#include <ui/GraphicBuffer.h>
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#include <thread>
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#include <list>
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using namespace ::android::hardware::automotive::evs::V1_0;
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using ::android::hardware::Return;
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using ::android::hardware::hidl_handle;
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namespace android {
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namespace automotive {
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namespace evs {
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namespace V1_0 {
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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 {
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public:
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HalCamera(sp<IEvsCamera> hwCamera) : mHwCamera(hwCamera) {};
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// Factory methods for client VirtualCameras
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sp<VirtualCamera> makeVirtualCamera();
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void disownVirtualCamera(sp<VirtualCamera> virtualCamera);
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// Implementation details
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sp<IEvsCamera> getHwCamera() { return mHwCamera; };
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unsigned getClientCount() { return mClients.size(); };
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bool changeFramesInFlight(int delta);
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Return<EvsResult> clientStreamStarting();
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void clientStreamEnding();
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Return<void> doneWithFrame(const BufferDesc& buffer);
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// Methods from ::android::hardware::automotive::evs::V1_0::ICarCameraStream follow.
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Return<void> deliverFrame(const BufferDesc& buffer) override;
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private:
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sp<IEvsCamera> 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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};
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} // namespace implementation
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} // namespace V1_0
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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_0_HALCAMERA_H
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