Media Player API

How do I get a status of what i s playing with out setting volume, pausing, toggling or other active action?

curl -X POST -H "x-ha-access: password" \
       -H "Content-Type: application/json" \
       -d '{"entity_id": "media_player.apple_tv"}' \
       http://192.168.0.111:8123/api/services/media_player/media_pause

I know that if I choose a non existing function like XYZ (see below) I will a response from the API as im asking for, but the delay is 5 - 10 seconds, while valid functions give an instant response.

curl -X POST -H "x-ha-access: password" \
       -H "Content-Type: application/json" \
       -d '{"entity_id": "media_player.apple_tv"}' \
       http://192.168.0.111:8123/api/services/media_player/XYZ

Is there more functions (“MEDIA CONTROL SERVICES”) to the media_player API than stated at https://home-assistant.io/components/media_player/ or is there any ideas to see what is playing on the Apple TV at any time?

//Tonkin

I know this is an old question but for anyone else who comes across this, the following worked for me to get info about what is currently playing on any media device:

curl -X GET -H "Authorization: Bearer <YOUR_AUTH_TOKEN>" http://<YOUR_HOME_ASSISTANT_URL>:8123/api/states/media_player.apple_tv