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Only calculate peak meter while GUI is open

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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
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4
plugins/examples/gain-gui/src/lib.rs
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@ -178,6 +178,9 @@ impl Plugin for Gain {
amplitude += *sample;
}
// 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 {
@ -190,6 +193,7 @@ impl Plugin for Gain {
self.peak_meter
.store(new_peak_meter, std::sync::atomic::Ordering::Relaxed)
}
}
ProcessStatus::Normal
}