ramp.rs

/// phasor (ramp from 0..1)
/// - input 0: frequency
/// - output 0: ramp output
#[derive(Default, Clone)]
pub struct Ramp {
    val: f32,
    sr: f32,
}

impl Ramp {
    pub fn new() -> Self {
        Ramp { val: 0., sr: 44100. }
    }
}

impl AudioNode for Ramp {
    const ID: u64 = 1116;
    type Inputs = U1;
    type Outputs = U1;

    #[inline]
    fn tick(&mut self, input: &Frame<f32, Self::Inputs>) -> Frame<f32, Self::Outputs> {
        let buffer = [self.val];
        self.val += input[0] / self.sr;
        if self.val >= 1. {
            self.val -= 1.;
        }
        buffer.into()
    }

    fn reset(&mut self) {
        self.val = 0.;
    }

    fn set_sample_rate(&mut self, sample_rate: f64) {
        self.sr = sample_rate as f32;
    }
}