#ifndef CAMERAOPERATIONTHREAD_H
#define CAMERAOPERATIONTHREAD_H

#include <QThread>
#include <QVector>
#include <QQueue>
#include <QMutex>
#include "ItkCamera.h"

enum ITK_DEVICE_CONTROL_TYPE
{
    /// \~chinese 探测设备                      \~english Probe device
    ITK_DEVICE_CONTROL_PROBE = 0,
    /// \~chinese 打开设备                      \~english Open device
    ITK_DEVICE_CONTROL_OPEN,
    /// \~chinese 关闭设备                      \~english Close device
    ITK_DEVICE_CONTROL_CLOSE,
    /// \~chinese 设备抓取                      \~english Device grab
    ITK_DEVICE_CONTROL_GRAB,
    /// \~chinese 停止抓取                      \~english Stop grab
    ITK_DEVICE_CONTROL_STOP
};

/// \~chinese 操作相机的子线程                      \~english thread of camera operation
class DeviceControlThread : public QThread
{
    Q_OBJECT
public:
    explicit DeviceControlThread(QObject *parent = nullptr);
    virtual ~DeviceControlThread();

    static DeviceControlThread* instance();

    void StartProbe();
    void StartOpen(int nIndex);
    void StartClose(int nIndex);
    void StartGrab(int nIndex);
    void StartStopGrab(int nIndex);

    QStringList GetDeviceList() const;

    bool IsCamOpened() const {
        return mOpenedFlag > 0;
    }

protected:
    void run();

    bool runProbe();
    bool runOpen(int nIndex);
    bool runClose(int nIndex);
    bool runGrab(int nIndex);
    bool runStopGrab(int nIndex);

    /// \~chinese 待操作的相机及操作类型				\~english The control index and type of next camera to operate
    QQueue<QPair<int, ITK_DEVICE_CONTROL_TYPE>> mCtrlInfo;
    /// \~chinese 用于保护上述操作信息的互斥锁		\~english The mutex to protect the control info
    QMutex mCtrlMutex;
    /// \~chinese 扫描到的相机列表				\~english Camera list of scan result
    QVector<ItkCamera> mCameras;
    /// \~chinese 打开的相机标志               \~endlish Flag of camera opened
    QAtomicInt mOpenedFlag;

signals:
    void signalControlFinish(int nIndex, ITK_DEVICE_CONTROL_TYPE nType, bool bSuccess);
    QString signalSelectGrabConfig(const QString& devName);
    void signalImageGrabbed(const QString& devName, const QImage& img);
};

#endif // CAMERAOPERATIONTHREAD_H