118 lines
4.0 KiB
C++
118 lines
4.0 KiB
C++
/*
|
|
* Copyright (C) 2016 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 CAR_EVS_APP_EVSSTATECONTROL_H
|
|
#define CAR_EVS_APP_EVSSTATECONTROL_H
|
|
|
|
#include "ConfigManager.h"
|
|
#include "EvsStats.h"
|
|
#include "RenderBase.h"
|
|
#include "StreamHandler.h"
|
|
|
|
#include <aidl/android/hardware/automotive/evs/CameraDesc.h>
|
|
#include <aidl/android/hardware/automotive/evs/IEvsCamera.h>
|
|
#include <aidl/android/hardware/automotive/evs/IEvsDisplay.h>
|
|
#include <aidl/android/hardware/automotive/evs/IEvsEnumerator.h>
|
|
#include <aidl/android/hardware/automotive/vehicle/VehiclePropValues.h>
|
|
|
|
#include <IVhalClient.h>
|
|
|
|
#include <thread>
|
|
|
|
/*
|
|
* This class runs the main update loop for the EVS application. It will sleep when it has
|
|
* nothing to do. It provides a thread safe way for other threads to wake it and pass commands
|
|
* to it.
|
|
*/
|
|
class EvsStateControl final {
|
|
public:
|
|
EvsStateControl(
|
|
std::shared_ptr<android::frameworks::automotive::vhal::IVhalClient> pVnet,
|
|
std::shared_ptr<aidl::android::hardware::automotive::evs::IEvsEnumerator> pEvs,
|
|
const std::shared_ptr<aidl::android::hardware::automotive::evs::IEvsDisplay>& pDisplay,
|
|
const ConfigManager& config);
|
|
|
|
enum State {
|
|
OFF = 0,
|
|
REVERSE,
|
|
LEFT,
|
|
RIGHT,
|
|
PARKING,
|
|
NUM_STATES // Must come last
|
|
};
|
|
|
|
enum class Op {
|
|
EXIT,
|
|
CHECK_VEHICLE_STATE,
|
|
TOUCH_EVENT,
|
|
};
|
|
|
|
struct Command {
|
|
Op operation;
|
|
uint32_t arg1;
|
|
uint32_t arg2;
|
|
};
|
|
|
|
// This spawns a new thread that is expected to run continuously
|
|
bool startUpdateLoop();
|
|
|
|
// This stops a rendering thread
|
|
void terminateUpdateLoop();
|
|
|
|
// Safe to be called from other threads
|
|
void postCommand(const Command& cmd, bool clear = false);
|
|
|
|
private:
|
|
void updateLoop();
|
|
android::frameworks::automotive::vhal::ErrorCode invokeGet(
|
|
aidl::android::hardware::automotive::vehicle::VehiclePropValue* pRequestedPropValue);
|
|
bool selectStateForCurrentConditions();
|
|
bool configureEvsPipeline(State desiredState); // Only call from one thread!
|
|
|
|
std::shared_ptr<android::frameworks::automotive::vhal::IVhalClient> mVehicle;
|
|
std::shared_ptr<aidl::android::hardware::automotive::evs::IEvsEnumerator> mEvs;
|
|
std::weak_ptr<aidl::android::hardware::automotive::evs::IEvsDisplay> mDisplay;
|
|
const ConfigManager& mConfig;
|
|
|
|
aidl::android::hardware::automotive::vehicle::VehiclePropValue mGearValue;
|
|
aidl::android::hardware::automotive::vehicle::VehiclePropValue mTurnSignalValue;
|
|
|
|
State mCurrentState = OFF;
|
|
|
|
// mCameraList is a redundant storage for camera device info, which is also
|
|
// stored in mCameraDescList and, however, not removed for backward
|
|
// compatibility.
|
|
std::vector<ConfigManager::CameraInfo> mCameraList[NUM_STATES];
|
|
std::unique_ptr<RenderBase> mCurrentRenderer;
|
|
std::unique_ptr<RenderBase> mDesiredRenderer;
|
|
std::vector<aidl::android::hardware::automotive::evs::CameraDesc> mCameraDescList[NUM_STATES];
|
|
|
|
std::thread mRenderThread; // The thread that runs the main rendering loop
|
|
|
|
// Other threads may want to spur us into action, so we provide a thread safe way to do that
|
|
std::mutex mLock;
|
|
std::condition_variable mWakeSignal;
|
|
std::queue<Command> mCommandQueue;
|
|
|
|
EvsStats mEvsStats; // Not thread-safe
|
|
|
|
// True if the first frame displayed on the mCurrentRenderer. Resets to false when
|
|
// mCurrentRenderer changes.
|
|
bool mFirstFrameIsDisplayed;
|
|
};
|
|
|
|
#endif // CAR_EVS_APP_EVSSTATECONTROL_H
|