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Audio: Change how volume works

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Across the entire audio system, audio now works in 0-1 terms instead of
0-100 as before. Therefore, volume is now a double instead of an int.
The master volume of the AudioServer changes smoothly through a
FadingProperty, preventing clicks. Finally, volume computations are done
with logarithmic scaling, which is more natural for the human ear.

Note that this could be 4-5 different commits, but as they change each
other's code all the time, it makes no sense to split them up.
This commit is contained in:
kleines Filmröllchen 2021-08-27 23:47:09 +02:00 • committed by Andreas Kling
parent 2909c3a931
commit 152ec28da0
14 changed files with 190 additions and 45 deletions
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4
Userland/Services/AudioServer/AudioServer.ipc
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@ -5,8 +5,8 @@ endpoint AudioServer
// Mixer functions
set_muted(bool muted) => ()
get_muted() => (bool muted)
get_main_mix_volume() => (i32 volume)
set_main_mix_volume(i32 volume) => ()
get_main_mix_volume() => (double volume)
set_main_mix_volume(double volume) => ()
// Audio device
set_sample_rate(u16 sample_rate) => ()