https://docs.microsoft.com/zh-cn/windows/desktop/WMP/player-playstate
Player.playState
The playState property retrieves a value indicating the state of the Windows Media Player operation.
Syntax
player .playState
Possible Values
This property is a read-only Number (long). The C-style enumeration constant can be derived by prefixing the state value with “wmpps”. For example, the constant for the Playing state is wmppsPlaying.
Value State Description
0 Undefined ；Windows Media Player is in an undefined state.
1 Stopped ；Playback of the current media item is stopped.
2 Paused ；Playback of the current media item is paused. When a media item is paused, resuming playback begins from the same location.
3 Playing ；The current media item is playing.
4 ScanForward ；The current media item is fast forwarding.
5 ScanReverse ；The current media item is fast rewinding.
6 Buffering ；The current media item is getting additional data from the server.
7 Waiting ；Connection is established, but the server is not sending data. Waiting for session to begin.
8 MediaEnded ；Media item has completed playback.
9 Transitioning ；Preparing new media item.
10 Ready ；Ready to begin playing.
11 Reconnecting ； Reconnecting to stream.