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use super::{
calc, hz_from_step, letter_octave_from_step, mel_from_step, perc_from_step,
scaled_perc_from_step, Hz, Letter, LetterOctave, Mel, Octave, Perc, ScaleWeight, ScaledPerc,
DEFAULT_SCALE_WEIGHT,
};
#[cfg(feature = "serde")]
use serde::{Deserialize, Serialize};
use std::cmp::Ordering;
use std::ops::{Add, Div, Mul, Neg, Rem, Sub};
#[derive(Debug, Copy, Clone)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub struct Step(pub calc::Step);
impl Step {
#[inline]
pub fn step(self) -> calc::Step {
let Step(step) = self;
step
}
#[inline]
pub fn hz(self) -> calc::Hz {
let Step(step) = self;
hz_from_step(step)
}
#[inline]
pub fn to_hz(self) -> Hz {
Hz(self.hz())
}
#[inline]
pub fn letter_octave(self) -> (Letter, Octave) {
letter_octave_from_step(self.step())
}
#[inline]
pub fn letter(self) -> Letter {
let (letter, _) = self.letter_octave();
letter
}
#[inline]
pub fn octave(self) -> Octave {
let (_, octave) = self.letter_octave();
octave
}
#[inline]
pub fn to_letter_octave(self) -> LetterOctave {
let (letter, octave) = self.letter_octave();
LetterOctave(letter, octave)
}
#[inline]
pub fn mel(self) -> calc::Mel {
mel_from_step(self.step())
}
#[inline]
pub fn to_mel(self) -> Mel {
Mel(self.mel())
}
#[inline]
pub fn perc(self) -> calc::Perc {
perc_from_step(self.step())
}
#[inline]
pub fn to_perc(self) -> Perc {
Perc(self.perc())
}
#[inline]
pub fn scaled_perc_with_weight(self, weight: ScaleWeight) -> calc::Perc {
scaled_perc_from_step(self.step(), weight)
}
#[inline]
pub fn scaled_perc(self) -> calc::Perc {
self.scaled_perc_with_weight(DEFAULT_SCALE_WEIGHT)
}
#[inline]
pub fn to_scaled_perc_with_weight(self, weight: ScaleWeight) -> ScaledPerc {
ScaledPerc(self.scaled_perc_with_weight(weight), weight)
}
#[inline]
pub fn to_scaled_perc(self) -> ScaledPerc {
self.to_scaled_perc_with_weight(DEFAULT_SCALE_WEIGHT)
}
}
impl Add for Step {
type Output = Step;
#[inline]
fn add(self, rhs: Step) -> Step {
Step(self.step() + rhs.step())
}
}
impl Sub for Step {
type Output = Step;
#[inline]
fn sub(self, rhs: Step) -> Step {
Step(self.step() - rhs.step())
}
}
impl Mul for Step {
type Output = Step;
#[inline]
fn mul(self, rhs: Step) -> Step {
Step(self.step() * rhs.step())
}
}
impl Div for Step {
type Output = Step;
#[inline]
fn div(self, rhs: Step) -> Step {
Step(self.step() / rhs.step())
}
}
impl Rem for Step {
type Output = Step;
#[inline]
fn rem(self, rhs: Step) -> Step {
Step(self.step() % rhs.step())
}
}
impl Neg for Step {
type Output = Step;
#[inline]
fn neg(self) -> Step {
Step(-self.step())
}
}
impl PartialEq for Step {
#[inline]
fn eq(&self, other: &Step) -> bool {
self.step() == other.step()
}
}
impl Eq for Step {}
impl PartialOrd for Step {
#[inline]
fn partial_cmp(&self, other: &Step) -> Option<Ordering> {
self.step().partial_cmp(&other.step())
}
}
impl Ord for Step {
#[inline]
fn cmp(&self, other: &Step) -> Ordering {
self.partial_cmp(other).unwrap()
}
}
impl<T> From<T> for Step
where
T: Into<f32>,
{
fn from(t: T) -> Step {
Step(t.into())
}
}
#[cfg(test)]
mod tests {
use super::Step;
macro_rules! t {
(
$($x:ty),+
) => {
fn from(val: f32) {
$(
assert_eq!(Step::from(val as $x), Step(val));
)*
}
#[test]
fn test_from_integer() {
from(0.0);
from(60.0);
from(127.0);
}
fn into(val: f32) {
$(
let actual: Step = (val as $x).into();
assert_eq!(actual, Step(val));
)*
}
#[test]
fn test_into_integer() {
into(0.0);
into(60.0);
into(127.0);
}
};
}
t!(u8, u16, i8, i16);
}