fifo.h

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/* Copyright 2015 CyberTech Labs Ltd.
 *
 * 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. */

#pragma once

#include <QtCore/QObject>
#include <QtCore/QScopedPointer>

#include "fifoInterface.h"
#include "deviceState.h"

namespace trikKernel {
class Configurer;
}

namespace trikHal {
class HardwareAbstractionInterface;
class FifoInterface;
}

namespace trikControl {

class Fifo: public FifoInterface
{
    Q_OBJECT

public:
    Fifo(const QString &virtualPort, const trikKernel::Configurer &configurer
            , const trikHal::HardwareAbstractionInterface &hardwareAbstraction);

    Fifo(const QString &fileName, const trikHal::HardwareAbstractionInterface &hardwareAbstraction);

    ~Fifo() override;

    Status status() const override;

public slots:
    QString read() override;

    bool hasData() const override;

private slots:
    void onNewData(const QString &data);
    void onReadError();

private:
    QScopedPointer<trikHal::FifoInterface> mFifo;

    QString mCurrent;

    mutable QReadWriteLock mCurrentLock;

    DeviceState mState;
};

}