I studied the code in tswriter and realized that it's pointless to query the scrambled state of the video audio stream in its current form.

the audio video onnotify events in tswriter already fires when the packets are unscrambled.

so in tve3, I have removed the old waitforunscrambledsignal method.

Instead I query tswriter on the scrambled state in the event that no pid notififcation events occured.

This way we save a few ms on channel changes. and things are kept simpler.