You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
3.2 KiB
86 lines
3.2 KiB
/*
|
|
* Copyright (C) 2021 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_CARSERVICE_STREAMHANDLER_H
|
|
#define ANDROID_CARSERVICE_STREAMHANDLER_H
|
|
|
|
#include "EvsServiceCallback.h"
|
|
|
|
#include <android/hardware/automotive/evs/1.1/IEvsCamera.h>
|
|
#include <android/hardware/automotive/evs/1.1/IEvsCameraStream.h>
|
|
#include <android/hardware/automotive/evs/1.1/IEvsDisplay.h>
|
|
#include <ui/GraphicBuffer.h>
|
|
|
|
#include <list>
|
|
|
|
namespace android {
|
|
namespace automotive {
|
|
namespace evs {
|
|
|
|
/*
|
|
* StreamHandler:
|
|
* This class can be used to receive camera imagery from an IEvsCamera implementation. It will
|
|
* hold onto the most recent image buffer, returning older ones.
|
|
* Note that the video frames are delivered on a background thread, while the control interface
|
|
* is actuated from the applications foreground thread.
|
|
*/
|
|
class StreamHandler : public android::hardware::automotive::evs::V1_1::IEvsCameraStream {
|
|
public:
|
|
StreamHandler(android::sp<android::hardware::automotive::evs::V1_1::IEvsCamera>& pCamera,
|
|
EvsServiceCallback* callback, int maxNumFramesInFlight);
|
|
virtual ~StreamHandler();
|
|
void shutdown();
|
|
bool startStream();
|
|
bool asyncStopStream();
|
|
void blockingStopStream();
|
|
bool isRunning();
|
|
void doneWithFrame(const android::hardware::automotive::evs::V1_1::BufferDesc& buffer);
|
|
|
|
private:
|
|
// Implementation for ::android::hardware::automotive::evs::V1_0::IEvsCameraStream
|
|
android::hardware::Return<void> deliverFrame(
|
|
const android::hardware::automotive::evs::V1_0::BufferDesc& buffer) override;
|
|
|
|
// Implementation for ::android::hardware::automotive::evs::V1_1::IEvsCameraStream
|
|
android::hardware::Return<void> deliverFrame_1_1(
|
|
const android::hardware::hidl_vec<android::hardware::automotive::evs::V1_1::BufferDesc>&
|
|
buffer) override;
|
|
android::hardware::Return<void> notify(
|
|
const android::hardware::automotive::evs::V1_1::EvsEventDesc& event) override;
|
|
|
|
// Values initialized as startup
|
|
android::sp<android::hardware::automotive::evs::V1_1::IEvsCamera> mEvsCamera;
|
|
|
|
// Since we get frames delivered to us asnchronously via the ICarCameraStream interface,
|
|
// we need to protect all member variables that may be modified while we're streaming
|
|
// (ie: those below)
|
|
std::mutex mLock;
|
|
std::condition_variable mCondition;
|
|
bool mRunning = false;
|
|
|
|
// Callbacks to forward EVS events and frames
|
|
EvsServiceCallback* mCallback;
|
|
|
|
std::list<android::hardware::automotive::evs::V1_1::BufferDesc> mReceivedBuffers
|
|
GUARDED_BY(mLock);
|
|
int mMaxNumFramesInFlight;
|
|
};
|
|
|
|
} // namespace evs
|
|
} // namespace automotive
|
|
} // namespace android
|
|
|
|
#endif // ANDROID_CARSERVICE_STREAMHANDLER_H
|