For anyone using the SHIELD TV Pro...

[litui]

I'm not sure if anyone has done this before but I just whipped up some Python that leverages the Android Debugger (ADB) tool to pull logs from the SHIELD TV Pro over the network and call out to the HyperHDR API locally to switch HDR mode and turn the LEDs and grabber on and off without needing to resort to Automatic Signal Detection.

https://github.com/litui/hyperhdr-shield-watcher

I spent the afternoon parsing through logs and figuring out what triggers to use for these events. This tool should be adaptable for anyone who uses an Android TV device (and understands RegEx) with some effort put into figuring out the right triggers for your device (edit the handlers/adb.py file's REGEX_MAPPING).

[litui]

Incidentally, the CEC outputs and inputs are also logged in ADB for anyone looking for an easy & cheap path to getting CEC signals from the SHIELD TV Pro.