mythmedia.h

Go to the documentation of this file.

#ifndef MYTH_MEDIA_H
#define MYTH_MEDIA_H

#include <QObject>
#include <QMap>
#include <QString>
#include <QEvent>
#include <QPointer>

#include "mythbaseexp.h"

typedef enum {
    MEDIASTAT_ERROR,        
    MEDIASTAT_UNKNOWN,
    MEDIASTAT_UNPLUGGED,
    MEDIASTAT_OPEN,         
    MEDIASTAT_NODISK,       
    MEDIASTAT_UNFORMATTED,  
    MEDIASTAT_USEABLE,
    MEDIASTAT_NOTMOUNTED,
    MEDIASTAT_MOUNTED
} MythMediaStatus;

typedef enum {
    MEDIATYPE_UNKNOWN  = 0x0001,
    MEDIATYPE_DATA     = 0x0002,
    MEDIATYPE_MIXED    = 0x0004,
    MEDIATYPE_AUDIO    = 0x0008,
    MEDIATYPE_DVD      = 0x0010,
    MEDIATYPE_VCD      = 0x0020,
    MEDIATYPE_MMUSIC   = 0x0040,
    MEDIATYPE_MVIDEO   = 0x0080,
    MEDIATYPE_MGALLERY = 0x0100,
    MEDIATYPE_BD       = 0x0200,
    MEDIATYPE_END      = 0x0400,
} MythMediaType;
// MediaType conflicts with a definition within OSX Quicktime Libraries.

typedef enum {
    MEDIAERR_OK,
    MEDIAERR_FAILED,
    MEDIAERR_UNSUPPORTED
} MythMediaError;

typedef QMap<QString,uint> ext_cnt_t;
typedef QMap<QString,uint> ext_to_media_t;

class MBASE_PUBLIC MythMediaDevice : public QObject
{
    Q_OBJECT
    friend class MediaMonitorDarwin;   // So these can call setStatus(),
    friend class MonitorThreadDarwin;  // and trigger posting of MythMediaEvents

 public:
    MythMediaDevice(QObject* par, const char* DevicePath, bool SuperMount,
                    bool AllowEject);

    const QString& getMountPath() const { return m_MountPath; }
    void setMountPath(const char *path) { m_MountPath = path; }

    const QString& getDevicePath() const { return m_DevicePath; }

    const QString& getRealDevice() const
    { return m_RealDevice.length() ? m_RealDevice : m_DevicePath; }


    const QString& getDeviceModel() const  { return m_DeviceModel;  }
    void setDeviceModel(const char *model) { m_DeviceModel = model; }

    MythMediaStatus getStatus() const { return m_Status; }

    const QString& getVolumeID() const { return m_VolumeID; }
    void  setVolumeID(const char *vol)  { m_VolumeID = vol; }

    const QString& getKeyID() const { return m_KeyID; }

    bool getAllowEject() const { return m_AllowEject; }

    bool getLocked() const { return m_Locked; }

    bool isDeviceOpen() const;

    bool isUsable() const
    {
        return m_Status == MEDIASTAT_USEABLE
            || m_Status == MEDIASTAT_MOUNTED
            || m_Status == MEDIASTAT_NOTMOUNTED;
    }

    MythMediaType getMediaType() const { return m_MediaType; }

    bool isSuperMount()      const { return m_SuperMount; }

    virtual MythMediaError  testMedia() { return MEDIAERR_UNSUPPORTED; }
    virtual bool openDevice();
    virtual bool closeDevice();
    virtual bool isSameDevice(const QString &path);
    virtual void setSpeed(int speed);
    virtual MythMediaStatus checkMedia() = 0;// Derived classes MUST implement this.
    virtual MythMediaError eject(bool open_close = true);
    virtual MythMediaError lock();
    virtual MythMediaError unlock();
    virtual bool performMountCmd( bool DoMount );

    bool mount()   { return performMountCmd(true);  }
    bool unmount() { return performMountCmd(false); }

    bool isMounted(bool bVerify = true);
    bool findMountPath();

    void RegisterMediaExtensions(uint mediatype,
                                 const QString& extensions);


    static const char* MediaStatusStrings[];
    static const char* MediaErrorStrings[];

    void clearData();

    const char* MediaTypeString();

    static const char* MediaTypeString(MythMediaType type);

 signals:
    void statusChanged(MythMediaStatus oldStatus, MythMediaDevice* pMedia);

 protected:
    virtual ~MythMediaDevice() {} // use deleteLater...

    virtual void onDeviceMounted(void)
    {
        MythMediaType type = DetectMediaType();
        if (type != MEDIATYPE_UNKNOWN)
            m_MediaType = type;
    }

    virtual void onDeviceUnmounted() {};

    MythMediaType DetectMediaType(void);
    bool ScanMediaType(const QString &directory, ext_cnt_t &counts);

    MythMediaStatus setStatus(MythMediaStatus newStat, bool CloseIt=false);

    QString m_DeviceModel;   
    QString m_DevicePath;    

    QString m_KeyID;         

    QString m_MountPath;     

    QString m_RealDevice;    

    QString m_VolumeID;      

    MythMediaStatus m_Status;    

    MythMediaType   m_MediaType; 

    bool m_AllowEject;       
    bool m_Locked;           
    bool m_SuperMount;       

    int  m_DeviceHandle;     



 private:
    ext_to_media_t m_ext_to_media; 
};

class MBASE_PUBLIC MythMediaEvent : public QEvent
{
  public:
    MythMediaEvent(MythMediaStatus oldStatus, MythMediaDevice *pDevice) :
        QEvent(kEventType), m_OldStatus(oldStatus), m_Device(pDevice) {}

    MythMediaStatus getOldStatus(void) const { return m_OldStatus; }
    MythMediaDevice* getDevice(void) { return m_Device; }

    static Type kEventType;

  protected:
    MythMediaStatus m_OldStatus;
    QPointer<MythMediaDevice> m_Device;
};

#endif

---