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Clamp event timings for VST3 plugins

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This commit is contained in:
Robbert van der Helm 2023-02-01 17:24:22 +01:00
parent eac88c4477
commit d5a8eb42ec
1 changed files with 27 additions and 4 deletions
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31
src/wrapper/vst3/wrapper.rs
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@ -1042,6 +1042,8 @@ impl<P: Vst3Plugin> IAudioProcessor for Wrapper<P> {
);
nih_debug_assert!(data.num_samples >= 0);
let total_buffer_len = data.num_samples as usize;
// Before doing anything, clear out any auxiliary outputs since they may contain
// uninitialized data when the host assumes that we'll always write something there
let current_bus_config = self.inner.current_bus_config.load();
@ -1057,7 +1059,7 @@ impl<P: Vst3Plugin> IAudioProcessor for Wrapper<P> {
ptr::write_bytes(
*((*host_output).buffers.offset(channel_idx)) as *mut f32,
0,
data.num_samples as usize,
total_buffer_len,
);
}
}
@ -1098,8 +1100,15 @@ impl<P: Vst3Plugin> IAudioProcessor for Wrapper<P> {
{
// Later this timing will be compensated for block splits by calling
// `event.subtract_timing(block_start)` before it is passed to the
// plugin
// plugin. Out of bounds events are clamped to the buffer>
let timing = sample_offset as u32;
nih_debug_assert!(
timing < total_buffer_len as u32,
"Input event is out of bounds, will be clamped to the \
buffer's size"
);
let timing = timing.min(total_buffer_len as u32 - 1);
let value = value as f32;
// MIDI CC messages, channel pressure, and pitch bend are also sent
@ -1167,6 +1176,12 @@ impl<P: Vst3Plugin> IAudioProcessor for Wrapper<P> {
let event = event.assume_init();
let timing = event.sample_offset as u32;
nih_debug_assert!(
timing < total_buffer_len as u32,
"Input event is out of bounds, will be clamped to the buffer's size"
);
let timing = timing.min(total_buffer_len as u32 - 1);
if event.type_ == EventTypes::kNoteOnEvent as u16 {
let event = event.event.note_on;
@ -1270,7 +1285,7 @@ impl<P: Vst3Plugin> IAudioProcessor for Wrapper<P> {
let mut input_events = self.inner.input_events.borrow_mut();
input_events.clear();
block_end = data.num_samples as usize;
block_end = total_buffer_len;
for event_idx in event_start_idx..process_events.len() {
match &process_events[event_idx] {
ProcessEvent::ParameterChange {
@ -1560,6 +1575,14 @@ impl<P: Vst3Plugin> IAudioProcessor for Wrapper<P> {
// There's also a ppqPos field, but uh how about no
vst3_event.sample_offset = event.timing() as i32 + block_start as i32;
// Out of bounds events are clamped to the buffer
nih_debug_assert!(
vst3_event.sample_offset < total_buffer_len as i32,
"Output event is out of bounds, will be clamped to the buffer's size"
);
vst3_event.sample_offset =
vst3_event.sample_offset.min(total_buffer_len as i32 - 1);
// `voice_id.unwrap_or(|| ...)` triggers
// https://github.com/rust-lang/rust-clippy/issues/8522
#[allow(clippy::unnecessary_lazy_evaluations)]
@ -1779,7 +1802,7 @@ impl<P: Vst3Plugin> IAudioProcessor for Wrapper<P> {
// If our block ends at the end of the buffer then that means there are no more
// unprocessed (parameter) events. If there are more events, we'll just keep going
// through this process until we've processed the entire buffer.
if block_end as i32 == data.num_samples {
if block_end == total_buffer_len {
break result;
} else {
block_start = block_end;