fix linear2db returning null

[DarkeyPro]

this is a tempt to fix linear2db returns null when p_linear=0.0.

[Calinou]

This should use a ternary operator instead of if for readability. We do not use single-line if statements in Godot's codebase.

[DarkeyPro]

I've updated it to use ternary operator.

[AaronRecord]

To fix the formatting

You'll also want to squash the commits when you're done

[timothyqiu]

IIRC, linear2db(0.0) returns -INF currently, and db2linear(-INF) is 0.0. If we change it to return -80.0, then it doesn't match after the inverse operation.

-INF is technically correct but very cumbersome to use as we have poor infinite value handling in APIs like AudioStreamPlayer volume and Slider value :(

[DarkeyPro]

It should return -80.0 because its the lowest value that audio bus and AudioStreamPlayer volume should take .

[DarkeyPro]

Also should i clamp the log min/max value to audio bus and AudioStreamPlayer volume.

[fire]

I think that linear2db(value) and db2linear(value) where the value is 0 should give the same result.

[DarkeyPro]

db2linear is working fine only linear2db returns null on p_linear=0.0.

[fire]

We discussed in the the proposal meeting.

Juan liked the idea of reversible operations.

A design was suggested that changes -inf to 0 when using linear2db. (I think this is the current design?)

There's a cut off constant in the editor to stop processing. I don't remember if it was -40DB or something.

[DarkeyPro]

yeah that would be a better way to fix it.

[MewPurPur]

Is there any resolution to this? It also needs a rebase as this is now linear_to_db()

[fire]

Has anything changed since #61935 (comment)?