signals:
void downloadProgress(int position, qint64 d, qint64 t);
void bufferReady(int position);
void sFailure(int position,failType);
void downloadComplete(int position);
void freeze(bool);
signals:
void downloadProgress(int position, qint64 d, qint64 t);
void bufferReady(int position);
void sFailure(int position,failType);
void downloadComplete(int position);
void freeze(bool);