tek/crates/tek_timer/src/lib.rs

pub(crate) use tek_core::*;
pub(crate) use tek_core::crossterm::event::{KeyCode, KeyModifiers};
pub(crate) use tek_jack::{*, jack::*};
pub(crate) use std::sync::{Arc, atomic::Ordering};
pub(crate) use atomic_float::AtomicF64;
submod! {
    timebase
    ticks
    transport
    transport_focus
    transport_handle
    transport_render
}

/// (pulses, name)
pub const NOTE_DURATIONS: [(usize, &str);26] = [
    (1,    "1/384"),
    (2,    "1/192"),
    (3,    "1/128"),
    (4,    "1/96"),
    (6,    "1/64"),
    (8,    "1/48"),
    (12,   "1/32"),
    (16,   "1/24"),
    (24,   "1/16"),
    (32,   "1/12"),
    (48,   "1/8"),
    (64,   "1/6"),
    (96,   "1/4"),
    (128,  "1/3"),
    (192,  "1/2"),
    (256,  "2/3"),
    (384,  "1/1"),
    (512,  "4/3"),
    (576,  "3/2"),
    (768,  "2/1"),
    (1152, "3/1"),
    (1536, "4/1"),
    (2304, "6/1"),
    (3072, "8/1"),
    (3456, "9/1"),
    (6144, "16/1"),
];

/// Returns the next shorter length
pub fn prev_note_length (ppq: usize) -> usize {
    for i in 1..=16 {
        let length = NOTE_DURATIONS[16-i].0;
        if length < ppq {
            return length
        }
    }
    ppq
}

/// Returns the next longer length
pub fn next_note_length (ppq: usize) -> usize {
    for (length, _) in &NOTE_DURATIONS {
        if *length > ppq {
            return *length
        }
    }
    ppq
}

pub fn ppq_to_name (ppq: usize) -> &'static str {
    for (length, name) in &NOTE_DURATIONS {
        if *length == ppq {
            return name
        }
    }
    ""
}