116 lines
3.7 KiB
Rust
116 lines
3.7 KiB
Rust
// Copyright (c) 2021 Weird Constructor <weirdconstructor@gmail.com>
|
|
// This file is a part of HexoDSP. Released under GPL-3.0-or-later.
|
|
// See README.md and COPYING for details.
|
|
|
|
use synfx_dsp::{TriSawLFO, Trigger};
|
|
use crate::dsp::{
|
|
DspNode, GraphAtomData, GraphFun, LedPhaseVals, NodeContext, NodeId, ProcBuf, SAtom,
|
|
};
|
|
use crate::nodes::{NodeAudioContext, NodeExecContext};
|
|
|
|
#[derive(Debug, Clone)]
|
|
pub struct TsLFO {
|
|
lfo: Box<TriSawLFO<f64>>,
|
|
trig: Trigger,
|
|
}
|
|
|
|
impl TsLFO {
|
|
pub fn new(_nid: &NodeId) -> Self {
|
|
Self { lfo: Box::new(TriSawLFO::new()), trig: Trigger::new() }
|
|
}
|
|
|
|
pub const time: &'static str =
|
|
"TsLFO time\nThe frequency or period time of the LFO, goes all the \
|
|
way from 0.1ms up to 30s. Please note, that the text entry is always \
|
|
in milliseconds.\nRange: (0..1)\n";
|
|
pub const trig: &'static str =
|
|
"TsLFO trig\nTriggers a phase reset of the LFO.\nRange: (0..1)\n";
|
|
pub const rev: &'static str =
|
|
"TsLFO rev\nThe reverse point of the LFO waveform. At 0.5 the LFO \
|
|
will follow a triangle waveform. At 0.0 or 1.0 the LFO waveform will \
|
|
be (almost) a (reversed) saw tooth. Node: A perfect sawtooth can not be \
|
|
achieved with this oscillator, as there will always be a minimal \
|
|
rise/fall time.\nRange: (0..1)\n";
|
|
pub const sig: &'static str = "TsLFO sig\nThe LFO output.\nRange: (0..1)";
|
|
pub const DESC: &'static str = r#"TriSaw LFO
|
|
|
|
This simple LFO has a configurable waveform. You can blend between triangular to sawtooth waveforms using the 'rev' parameter.
|
|
"#;
|
|
pub const HELP: &'static str = r#"TsLFO - TriSaw LFO
|
|
|
|
This simple LFO has a configurable waveform. You can blend between
|
|
triangular to sawtooth waveforms using the 'rev' parameter.
|
|
|
|
Using the 'trig' input you can reset the LFO phase, which allows to use it
|
|
kind of like an envelope.
|
|
"#;
|
|
}
|
|
|
|
impl DspNode for TsLFO {
|
|
fn outputs() -> usize {
|
|
1
|
|
}
|
|
|
|
fn set_sample_rate(&mut self, srate: f32) {
|
|
self.lfo.set_sample_rate(srate as f64);
|
|
}
|
|
|
|
fn reset(&mut self) {
|
|
self.lfo.reset();
|
|
self.trig.reset();
|
|
}
|
|
|
|
#[inline]
|
|
fn process<T: NodeAudioContext>(
|
|
&mut self,
|
|
ctx: &mut T,
|
|
_ectx: &mut NodeExecContext,
|
|
_nctx: &NodeContext,
|
|
_atoms: &[SAtom],
|
|
inputs: &[ProcBuf],
|
|
outputs: &mut [ProcBuf],
|
|
ctx_vals: LedPhaseVals,
|
|
) {
|
|
use crate::dsp::{denorm, inp, out};
|
|
|
|
let time = inp::TsLFO::time(inputs);
|
|
let trig = inp::TsLFO::trig(inputs);
|
|
let rev = inp::TsLFO::rev(inputs);
|
|
let out = out::TsLFO::sig(outputs);
|
|
|
|
let lfo = &mut *self.lfo;
|
|
|
|
for frame in 0..ctx.nframes() {
|
|
if self.trig.check_trigger(denorm::TsLFO::trig(trig, frame)) {
|
|
lfo.reset();
|
|
}
|
|
|
|
let time_ms = denorm::TsLFO::time(time, frame).clamp(0.1, 300000.0);
|
|
|
|
lfo.set((1000.0 / time_ms) as f64, denorm::TsLFO::rev(rev, frame) as f64);
|
|
|
|
out.write(frame, lfo.next_unipolar() as f32);
|
|
}
|
|
|
|
ctx_vals[0].set(out.read(ctx.nframes() - 1));
|
|
}
|
|
|
|
fn graph_fun() -> Option<GraphFun> {
|
|
let mut lfo = TriSawLFO::new();
|
|
lfo.set_sample_rate(160.0);
|
|
|
|
Some(Box::new(move |gd: &dyn GraphAtomData, init: bool, _x: f32, _xn: f32| -> f32 {
|
|
if init {
|
|
lfo.reset();
|
|
let time_idx = NodeId::TsLFO(0).inp_param("time").unwrap().inp();
|
|
let rev_idx = NodeId::TsLFO(0).inp_param("rev").unwrap().inp();
|
|
|
|
let time = gd.get_norm(time_idx as u32).sqrt();
|
|
let rev = gd.get_norm(rev_idx as u32);
|
|
lfo.set(5.0 * (1.0 - time) + time * 1.0, rev);
|
|
}
|
|
|
|
lfo.next_unipolar() as f32
|
|
}))
|
|
}
|
|
}
|