alex/nih-plug
1
0
Fork 0
Code Activity

Only calculate peak meter while GUI is open

Browse source 
To show off this feature.
This commit is contained in:
Robbert van der Helm 2022-02-08 20:28:40 +01:00
parent 4260c5441c
commit d9ac60ae85
1 changed files with 14 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
plugins/examples/gain-gui/src/lib.rs
View file

@ -178,17 +178,21 @@ impl Plugin for Gain {
amplitude += *sample;
}
amplitude = (amplitude / num_samples as f32).abs();
let current_peak_meter = self.peak_meter.load(std::sync::atomic::Ordering::Relaxed);
let new_peak_meter = if amplitude > current_peak_meter {
amplitude
} else {
current_peak_meter * self.peak_meter_decay_weight
+ amplitude * (1.0 - self.peak_meter_decay_weight)
};
// To save resources, a plugin can (and probably should!) only perform expensive
// calculations that are only displayed on the GUI while the GUI is open
if self.editor_state.open() {
amplitude = (amplitude / num_samples as f32).abs();
let current_peak_meter = self.peak_meter.load(std::sync::atomic::Ordering::Relaxed);
let new_peak_meter = if amplitude > current_peak_meter {
amplitude
} else {
current_peak_meter * self.peak_meter_decay_weight
+ amplitude * (1.0 - self.peak_meter_decay_weight)
};
self.peak_meter
.store(new_peak_meter, std::sync::atomic::Ordering::Relaxed)
self.peak_meter
.store(new_peak_meter, std::sync::atomic::Ordering::Relaxed)
}
}
ProcessStatus::Normal