unspeaker/tek
1
0
Fork 0
mirror of https://codeberg.org/unspeaker/tek.git synced 2025-12-07 04:06:45 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

remove some allocations from process callback

Browse source
This commit is contained in:
🪞👃🪞 2024-07-05 13:51:39 +03:00
parent 2e26fc2eaa
commit e83802e1fd
3 changed files with 109 additions and 113 deletions
Download patch file Download diff file Expand all files Collapse all files

23
src/core/midi.rs
View file

@ -7,18 +7,15 @@ pub type MIDIMessage =
Vec<u8>;
pub type MIDIChunk =
[Option<Vec<MIDIMessage>>];
[Vec<MIDIMessage>];
/// Add "all notes off" to the start of a buffer.
pub fn all_notes_off (output: &mut MIDIChunk) {
output[0] = Some(vec![]);
if let Some(Some(frame)) = output.get_mut(0) {
let mut buf = vec![];
let msg = MidiMessage::Controller { controller: 123.into(), value: 0.into() };
let evt = LiveEvent::Midi { channel: 0.into(), message: msg };
evt.write(&mut buf).unwrap();
frame.push(buf);
}
let mut buf = vec![];
let msg = MidiMessage::Controller { controller: 123.into(), value: 0.into() };
let evt = LiveEvent::Midi { channel: 0.into(), message: msg };
evt.write(&mut buf).unwrap();
output[0].push(buf);
}
pub fn parse_midi_input (input: MidiIter) -> Box<dyn Iterator<Item=(usize, LiveEvent, &[u8])> + '_> {
@ -32,11 +29,9 @@ pub fn parse_midi_input (input: MidiIter) -> Box<dyn Iterator<Item=(usize, LiveE
/// Write to JACK port from output buffer (containing notes from sequence and/or monitor)
pub fn write_midi_output (writer: &mut ::jack::MidiWriter, output: &MIDIChunk, frames: usize) {
for time in 0..frames {
if let Some(Some(frame)) = output.get(time) {
for event in frame.iter() {
writer.write(&::jack::RawMidi { time: time as u32, bytes: &event })
.expect(&format!("{event:?}"));
}
for event in output[time].iter() {
writer.write(&::jack::RawMidi { time: time as u32, bytes: &event })
.expect(&format!("{event:?}"));
}
}
}