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Change single branch match to if let

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Robbert van der Helm 2022-07-25 14:39:43 +02:00
parent 1fbcd583a4
commit 3ffc2f0604
1 changed files with 42 additions and 47 deletions
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89
plugins/examples/poly_mod_synth/src/lib.rs
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@ -249,58 +249,53 @@ impl Plugin for PolyModSynth {
normalized_offset,
} => {
// Polyphonic modulation events are matched to voices using the
// voice ID, and to parameters using the poly modulation ID
match self.get_voice_idx(voice_id) {
Some(voice_idx) => {
let voice = self.voices[voice_idx].as_mut().unwrap();
// voice ID, and to parameters using the poly modulation ID. The
// host will probably send a modulation event every N samples. This
// will happen before the voice is active, and of course also after
// it has been terminated (because the host doesn't know that it
// will be). Because of that, we won't print any assertion failures
// when we can't find the voice index here.
if let Some(voice_idx) = self.get_voice_idx(voice_id) {
let voice = self.voices[voice_idx].as_mut().unwrap();
match poly_modulation_id {
GAIN_POLY_MOD_ID => {
// This should either create a smoother for this
// modulated parameter or update the existing one.
// Notice how this uses the parameter's unmodulated
// normalized value in combination with the normalized
// offset to create the target plain value
let target_plain_value = self
.params
.gain
.preview_modulated(normalized_offset);
let (_, smoother) =
voice.voice_gain.get_or_insert_with(|| {
(
normalized_offset,
self.params.gain.smoothed.clone(),
)
});
match poly_modulation_id {
GAIN_POLY_MOD_ID => {
// This should either create a smoother for this
// modulated parameter or update the existing one.
// Notice how this uses the parameter's unmodulated
// normalized value in combination with the normalized
// offset to create the target plain value
let target_plain_value = self
.params
.gain
.preview_modulated(normalized_offset);
let (_, smoother) =
voice.voice_gain.get_or_insert_with(|| {
(
normalized_offset,
self.params.gain.smoothed.clone(),
)
});
// If this `PolyModulation` events happens on the
// same sample as a voice's `NoteOn` event, then it
// should immediately use the modulated value
// instead of slowly fading in
if voice.internal_voice_id
>= this_sample_internal_voice_id_start
{
smoother.reset(target_plain_value);
} else {
smoother.set_target(
sample_rate,
target_plain_value,
);
}
// If this `PolyModulation` events happens on the
// same sample as a voice's `NoteOn` event, then it
// should immediately use the modulated value
// instead of slowly fading in
if voice.internal_voice_id
>= this_sample_internal_voice_id_start
{
smoother.reset(target_plain_value);
} else {
smoother
.set_target(sample_rate, target_plain_value);
}
n => nih_debug_assert_failure!(
"Polyphonic modulation sent for unknown poly \
modulation ID {}",
n
),
}
n => nih_debug_assert_failure!(
"Polyphonic modulation sent for unknown poly \
modulation ID {}",
n
),
}
// The host will probably send a modulation event every N
// samples. This will happen before the voice is active, and of
// course also after it has been terminated (because the host
// doesn't know that it will be). Because of that, we won't
// print any assertion failures here.
None => (),
}
}
NoteEvent::MonoAutomation {