universe output correction can't be overwritten to linear by channel

[mvandenabeele]

Hi

If a universe has output_correction configured to eg quadratic, it is not possible to set channel output_correction to linear, because that would be value None and the code falls back to universe output_correction.

[spacemanspiff2007]

You can just add an output correction yourself to the channel:

def linear(val: float, max_val: int = 255):
    return val

[mvandenabeele]

Thanks. That's what I ended up doing after I found the issue. But it's counterintuitive in my opinion. But in the end, it's your choice ofcourse. I can't thank you enough for the effort you put into this and for sharing with the community.

[spacemanspiff2007]

I can probably add this to the available output corrections. What would be your suggestion that still allows to set the correction on the whole universe?

[mvandenabeele]

I'd add your suggested linear function to output_corrections.py. Setting the channel output_correction to None would make it fallback to the universe output_correction. If that is None as well, I'd fallback to the linear function as a default.