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88 lines
3.0 KiB
88 lines
3.0 KiB
/*
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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_CAMERAPROXY_H
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#define ANDROID_AUTOMOTIVE_EVS_V1_0_CAMERAPROXY_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 <deque>
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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::Void;
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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 HalCamera; // From HalCamera.h
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// This class represents an EVS camera to the client application. As such it presents
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// the IEvsCamera interface, and also proxies the frame delivery to the client's
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// IEvsCameraStream object.
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class VirtualCamera : public IEvsCamera {
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public:
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explicit VirtualCamera(sp<HalCamera> halCamera);
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virtual ~VirtualCamera();
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void shutdown();
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sp<HalCamera> getHalCamera() { return mHalCamera; };
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unsigned getAllowedBuffers() { return mFramesAllowed; };
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bool isStreaming() { return mStreamState == RUNNING; }
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// Proxy to receive frames and forward them to the client's stream
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bool deliverFrame(const BufferDesc& buffer);
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// Methods from ::android::hardware::automotive::evs::V1_0::IEvsCamera follow.
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Return<void> getCameraInfo(getCameraInfo_cb _hidl_cb) override;
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Return<EvsResult> setMaxFramesInFlight(uint32_t bufferCount) override;
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Return<EvsResult> startVideoStream(const ::android::sp<IEvsCameraStream>& stream) override;
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Return<void> doneWithFrame(const BufferDesc& buffer) override;
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Return<void> stopVideoStream() override;
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Return<int32_t> getExtendedInfo(uint32_t opaqueIdentifier) override;
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Return<EvsResult> setExtendedInfo(uint32_t opaqueIdentifier, int32_t opaqueValue) override;
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private:
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sp<HalCamera> mHalCamera; // The low level camera interface that backs this proxy
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sp<IEvsCameraStream> mStream;
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std::deque<BufferDesc> mFramesHeld;
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unsigned mFramesAllowed = 1;
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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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};
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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_CAMERAPROXY_H
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