bass-foundry/plugins/rivet/app/tests/midi.rs

use rivet_app::{AudioEngine, Shared};
use rivet_core::{Note, Phrase, BAR, PPQ};

fn clip(pitch: u8, length: u32) -> Phrase {
    Phrase {
        length,
        notes: vec![Note {
            start: 0,
            duration: length,
            pitch,
            velocity: 90,
            ..Default::default()
        }],
    }
}
#[test]
fn looping_and_mode_changes_release_and_retrigger_notes() {
    let shared = Shared::default();
    let mut a = AudioEngine::default();
    a.player.set_sample_rate(8000.).unwrap();
    shared.preview(&clip(60, PPQ)).unwrap();
    a.begin_block(&shared);
    let first = a.frame(120., true);
    assert_eq!(first.on, Some((60, 90)));
    assert_eq!(first.off, None);
    let mut repeated = false;
    for _ in 0..4001 {
        let frame = a.frame(120., true);
        if frame.off.is_some() {
            assert_eq!(frame.off, Some(60));
            assert_eq!(frame.on, Some((60, 90)));
            repeated = true;
            break;
        }
    }
    assert!(repeated);
    let muted = a.frame(120., false);
    assert_eq!(muted.off, Some(60));
    assert_eq!(muted.on, None);
    assert_eq!(a.frame(120., true).on, Some((60, 90)));
    shared.stop();
    a.begin_block(&shared);
    let stopped = a.frame(120., true);
    assert_eq!(stopped.off, Some(60));
    assert_eq!(stopped.on, None);
}
#[test]
fn adjacent_same_pitch_notes_have_separate_sample_accurate_attacks() {
    let shared = Shared::default();
    shared
        .looping
        .store(false, std::sync::atomic::Ordering::Release);
    let mut a = AudioEngine::default();
    a.player.set_sample_rate(8000.).unwrap();
    let p = Phrase {
        length: PPQ,
        notes: vec![
            Note {
                start: 0,
                duration: PPQ / 2,
                pitch: 60,
                velocity: 90,
                ..Default::default()
            },
            Note {
                start: PPQ / 2,
                duration: PPQ / 2,
                pitch: 60,
                velocity: 70,
                ..Default::default()
            },
        ],
    };
    shared.preview(&p).unwrap();
    a.begin_block(&shared);
    let mut events = Vec::new();
    for frame in 0i32..4003 {
        let e = a.frame(120., true);
        if e.off.is_some() || e.on.is_some() {
            events.push((frame, e.off, e.on));
        }
    }
    assert_eq!(events.len(), 3);
    assert_eq!(events[0], (0, None, Some((60, 90))));
    assert!((events[1].0 - 2000).abs() <= 1);
    assert_eq!(events[1].1, Some(60));
    assert_eq!(events[1].2, Some((60, 70)));
    assert!((events[2].0 - 4000).abs() <= 1);
    assert_eq!(events[2].1, Some(60));
    assert_eq!(events[2].2, None);
}
#[test]
fn queued_audition_switches_at_the_next_bar_line_and_stop_cancels_it() {
    let shared = Shared::default();
    let mut a = AudioEngine::default();
    a.player.set_sample_rate(8000.).unwrap();
    shared.preview(&clip(60, 4 * BAR)).unwrap();
    a.begin_block(&shared);
    for _ in 0..100 {
        a.frame(120., true);
    }
    a.end_block(&shared);
    shared.audition(&clip(67, 4 * BAR)).unwrap();
    a.begin_block(&shared);
    let mut switched = None;
    for index in 100i32..16003 {
        let f = a.frame(120., true);
        if f.on == Some((67, 90)) {
            assert_eq!(f.off, Some(60));
            switched = Some(index);
            break;
        }
    }
    assert!((switched.unwrap() - 16000).abs() <= 1);
    a.end_block(&shared);
    shared.audition(&clip(72, 2 * BAR)).unwrap();
    a.begin_block(&shared);
    shared.stop();
    a.begin_block(&shared);
    let f = a.frame(120., true);
    assert_eq!(f.off, Some(67));
    assert_eq!(f.on, None);
    assert!(!a.player.is_playing());
}