Decoder.h

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#ifndef DECODER_H
#define DECODER_H
 
#include "JS8_Main/ProcessThread.h"
 
#include <QByteArray>
#include <QLoggingCategory>
#include <QPointer>
#include <QProcess>

class Worker : public QObject {
    Q_OBJECT
  public:
    ~Worker();
 
  public slots:
    void start(QString path, QStringList args);

    void quit();

    QProcess *process() const { return m_proc.data(); }
 
  private:
    void setProcess(QProcess *proc, int msecs = 1000);
 
  signals:
    void ready(QByteArray t);

    void error(int errorCode, QString errorString);

    void finished(int exitCode, int statusCode, QString errorString);
 
  private:
    QScopedPointer<QProcess> m_proc; 
};

class Decoder : public QObject {
    Q_OBJECT
  public:
    Decoder(QObject *parent = nullptr);

    ~Decoder();

    void lock();

    void unlock();

    QString program() const {
        if (!m_worker.isNull() && m_worker->process() != nullptr) {
            return m_worker->process()->program();
        }
        return {};
    }

    QStringList arguments() const {
        if (!m_worker.isNull() && m_worker->process() != nullptr) {
            return m_worker->process()->arguments();
        }
        return {};
    }
 
  private:
    Worker *createWorker();
 
  public slots:
    void start(QThread::Priority priority);

    void quit();

    bool wait();
 
    // Slots forwarded from the UI or internal code to control the process.
    void processStart(QString path, QStringList args);
    void processReady(QByteArray t);
    void processQuit();
 
    void processError(int errorCode, QString errorString);
    void processFinished(int exitCode, int statusCode, QString errorString);
 
  signals:
    void startWorker(QString path, QStringList args);
    void quitWorker();

    void ready(QByteArray t);
    void error(int errorCode, QString errorString);
    void finished(int exitCode, int statusCode, QString errorString);
 
  private:
    QPointer<Worker> m_worker; 
    QThread m_thread;         
};
 
Q_DECLARE_LOGGING_CATEGORY(decoder_js8)
 
#endif // DECODER_H