mirror of
https://github.com/dredozubov/polyrhythmix.git
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First more or less working version
This commit is contained in:
Denis Redozubov
parent
5ea3d27efc
commit
e4e8c5c402
1 changed files with 50 additions and 125 deletions
175
src/midi/core.rs
175
src/midi/core.rs
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@ -68,22 +68,19 @@ impl Ord for EventType {
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fn cmp(&self, other: &EventType) -> Ordering {
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match (self, other) {
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(EventType::NoteOn(a), EventType::NoteOn(b)) => a.cmp(b),
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(EventType::NoteOn(_), EventType::NoteOff(_)) => Ordering::Greater,
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(EventType::NoteOff(_), EventType::NoteOn(_)) => Ordering::Less,
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(EventType::NoteOn(a), EventType::NoteOff(b)) => match a.cmp(b) {
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Ordering::Equal => Ordering::Greater,
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ord => ord
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},
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(EventType::NoteOff(a), EventType::NoteOn(b)) => match a.cmp(b) {
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Ordering::Equal => Ordering::Less,
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ord => ord
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},
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(EventType::NoteOff(a), EventType::NoteOff(b)) => a.cmp(b),
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}
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}
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}
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impl EventType {
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fn is_note_on(&self) -> bool {
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match self {
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EventType::NoteOn(_) => true,
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EventType::NoteOff(_) => false,
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}
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}
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}
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#[derive(Debug, Clone, Copy, PartialEq, PartialOrd, Ord, Eq, Hash)]
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pub enum Part {
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KickDrum,
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@ -104,12 +101,38 @@ impl Part {
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}
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}
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#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd)]
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#[derive(Debug, Clone, Copy, PartialEq, Eq)]
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pub struct Event<T> {
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tick: T,
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event_type: EventType,
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}
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impl<T> PartialOrd for Event<T>
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where
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T: PartialOrd + Ord,
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Event<T>: Ord
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{
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fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
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Some(self.cmp(other))
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}
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fn lt(&self, other: &Self) -> bool {
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matches!(self.partial_cmp(other), Some(Ordering::Less))
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}
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fn le(&self, other: &Self) -> bool {
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matches!(self.partial_cmp(other), Some(Ordering::Less | Ordering::Equal))
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}
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fn gt(&self, other: &Self) -> bool {
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matches!(self.partial_cmp(other), Some(Ordering::Greater))
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}
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fn ge(&self, other: &Self) -> bool {
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matches!(self.partial_cmp(other), Some(Ordering::Greater | Ordering::Equal))
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}
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}
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impl<T> Ord for Event<T>
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where
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T: Ord,
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@ -141,8 +164,13 @@ fn test_ord_event_t() {
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assert_eq!(first_off.cmp(&second_on), Ordering::Less);
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let mut vec1 = vec![second_on, first_off, first_on];
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let mut vec2 = vec1.clone();
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vec1.sort_by(|x, y| x.cmp(y));
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assert_eq!(vec1, vec![first_on, first_off, second_on]);
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vec2.sort();
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assert_eq!(vec2, vec![first_on, first_off, second_on]);
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}
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// Events are supposed to be sorted by T at all times.
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@ -182,7 +210,6 @@ impl<T: Add<Tick, Output = T> + Clone + Ord + std::fmt::Debug> Add for EventGrid
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self.events.extend(other_events);
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// I don't know why sort() doesn't work in the same way.
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self.events.sort_by(|x, y| x.cmp(y));
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println!("self.events: {:?}", self.events);
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self.length = self.length + other.length;
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self
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}
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@ -460,8 +487,7 @@ fn flatten_group(
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}
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};
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});
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// grid.events.sort() is not the same for some reason
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grid.events.sort_by(|x, y| x.cmp(y));
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grid.events.sort();
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cycle_grid(grid, *times)
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}
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@ -607,8 +633,6 @@ impl Iterator for EventIterator {
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})
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.collect();
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println!("candidates: {:?}", candidates);
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if let Some((min_part, min_event)) = candidates.iter().min_by_key(|(_,x)| *x) {
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match min_part {
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Part::KickDrum => self.kick.next(),
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@ -636,71 +660,7 @@ fn test_event_iterator_impl() {
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Part::SnareDrum,
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&mut Tick(0),
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);
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let kick2 = flatten_group(
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&group_or_delimited_group("8xxxxxxxx").unwrap().1,
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Part::KickDrum,
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&mut Tick(0),
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);
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let snare2 = flatten_group(
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&group_or_delimited_group("4-x-x").unwrap().1,
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Part::SnareDrum,
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&mut Tick(0),
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);
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assert_eq!(
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EventIterator::new(
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kick2.clone(),
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snare2.clone(),
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empty.clone(),
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empty.clone(),
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TimeSignature::from_str("4/4").unwrap()
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)
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.into_iter()
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.collect::<Vec<Event<Tick>>>(),
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vec![
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Event {
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event_type: EventType::NoteOn(Part::KickDrum),
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tick: Tick(0)
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},
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Event {
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event_type: EventType::NoteOff(Part::KickDrum),
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tick: Tick(24)
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},
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Event {
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event_type: EventType::NoteOn(Part::KickDrum),
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tick: Tick(24)
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},
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Event {
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event_type: EventType::NoteOff(Part::KickDrum),
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tick: Tick(48)
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},
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Event {
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event_type: EventType::NoteOn(Part::SnareDrum),
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tick: Tick(48)
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},
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Event {
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event_type: EventType::NoteOn(Part::KickDrum),
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tick: Tick(48)
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},
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Event {
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event_type: EventType::NoteOff(Part::KickDrum),
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tick: Tick(72)
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},
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Event {
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event_type: EventType::NoteOn(Part::KickDrum),
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tick: Tick(72)
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},
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Event {
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event_type: EventType::NoteOff(Part::KickDrum),
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tick: Tick(96)
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},
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Event {
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event_type: EventType::NoteOn(Part::SnareDrum),
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tick: Tick(96)
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}
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]
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);
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assert_eq!(
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EventIterator::new(
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kick1.clone(),
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@ -718,11 +678,11 @@ fn test_event_iterator_impl() {
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},
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Event {
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tick: Tick(48),
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event_type: EventType::NoteOn(Part::SnareDrum)
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event_type: EventType::NoteOff(Part::KickDrum)
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},
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Event {
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tick: Tick(96),
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event_type: EventType::NoteOff(Part::KickDrum)
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tick: Tick(48),
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event_type: EventType::NoteOn(Part::SnareDrum)
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},
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Event {
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tick: Tick(96),
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@ -752,35 +712,6 @@ fn test_event_iterator_impl() {
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}
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]
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);
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assert_eq!(
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EventIterator::new(
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kick1.clone(),
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empty.clone(),
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empty.clone(),
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empty.clone(),
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TimeSignature::from_str("4/4").unwrap()
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)
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.into_iter()
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.collect::<Vec<Event<Tick>>>(),
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[
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Event {
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tick: Tick(0),
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event_type: EventType::NoteOn(Part::KickDrum)
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},
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Event {
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tick: Tick(48),
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event_type: EventType::NoteOff(Part::KickDrum)
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},
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Event {
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tick: Tick(96),
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event_type: EventType::NoteOn(Part::KickDrum)
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},
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Event {
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tick: Tick(144),
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event_type: EventType::NoteOff(Part::KickDrum)
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}
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]
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);
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}
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// Returns time as a number of ticks from beginning, has to be turned into the midi delta-time.
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@ -847,17 +778,12 @@ fn flatten_and_merge(
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}
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None => (EventGrid::empty(), 0),
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};
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// let iter = |grid: EventGrid<Tick>, times| grid.into_iter().cycle().take(times).peekable();
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let iter = |grid: EventGrid<Tick>, times| {
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[0..times]
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.iter()
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.fold(EventGrid::empty(), |acc, _| acc + grid.clone())
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};
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EventIterator::new(
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iter(kick_grid, kick_repeats),
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iter(snare_grid, snare_repeats),
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iter(hihat_grid, hihat_repeats),
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iter(crash_grid, crash_repeats),
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cycle_grid(kick_grid, Times(kick_repeats as u16)),
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cycle_grid(snare_grid, Times(snare_repeats as u16)),
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cycle_grid(hihat_grid, Times(hihat_repeats as u16)),
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cycle_grid(crash_grid, Times(crash_repeats as u16)),
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time_signature,
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)
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}
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@ -898,7 +824,6 @@ fn create_tracks<'a>(
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events,
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length: time,
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};
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println!("event grid in ticks: {:?}", event_grid_tick);
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let event_grid = event_grid_tick.to_delta();
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let mut drums = Vec::new();
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// let midi_tempo = MidiTempo::from_tempo(Tempo(130)).0;
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