Ive been reading up on getting widevine playback to happen on the chromecast after a device has connected to it. Ive already got widevine working for movie titles in both android and ios and Im not sure where to begin as far as what I should pass as my custom data to the player. Ive had a brief look at the sample at
https://github.com/googlecast/CastMediaPlayerStreamingDRM
but I have yet to try to implement it as I dont want to be spinning my wheels trying to pass random keys and things into the receiver. Since I have all the necessary authentications taking place on the device already what would I need to send to the receiver.