成员的完整列表，这些成员属于 fsdk.MediaPlayerCallback,包括所有继承而来的类成员

Close()	fsdk.MediaPlayerCallback
GetPlayerSettings()	fsdk.MediaPlayerCallback
GetState()	fsdk.MediaPlayerCallback
Play()	fsdk.MediaPlayerCallback
Release()	fsdk.MediaPlayerCallback
Seek(current_pos)	fsdk.MediaPlayerCallback
Stop()	fsdk.MediaPlayerCallback