86 lines
2.6 KiB
Rust
86 lines
2.6 KiB
Rust
// Copyright (c) 2021 Weird Constructor <weirdconstructor@gmail.com>
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// This file is a part of HexoDSP. Released under GPL-3.0-or-later.
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// See README.md and COPYING for details.
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use crate::nodes::{NodeAudioContext, NodeExecContext};
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use crate::dsp::{NodeId, SAtom, ProcBuf, DspNode, LedPhaseVals, NodeContext};
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use crate::dsp::helpers::Quantizer;
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#[macro_export]
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macro_rules! fa_quant { ($formatter: expr, $v: expr, $denorm_v: expr) => { {
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write!($formatter, "?")
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} } }
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/// A pitch quantizer
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#[derive(Debug, Clone)]
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pub struct Quant {
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quant: Box<Quantizer>,
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}
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impl Quant {
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pub fn new(_nid: &NodeId) -> Self {
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Self {
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quant: Box::new(Quantizer::new()),
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}
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}
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pub const freq : &'static str =
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"Quant freq\n\nRange: (0..1)";
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pub const oct : &'static str =
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"Quant oct\n\nRange: (-1..1)";
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pub const sig : &'static str =
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"Quant sig\n\nRange: (-1..1)";
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pub const keys : &'static str =
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"Quant keys\n";
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pub const DESC : &'static str =
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r#"Pitch Quantizer
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This is a simple quantizer, that snaps a pitch signal on 'freq' to the closest selected notes within their octave.
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"#;
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pub const HELP : &'static str =
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r#"Quant - A pitch quantizer
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This is a simple quantizer, that snaps a pitch signal on 'freq' to the
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closest selected notes within their octave.
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If you sweep along pitches you will notice that notes that are closer together
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are travelled across faster. That means the notes are not evenly distributed
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across the pitch input. If you want a more evenly distributed pitch selection
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please see also the 'CQnt' node.
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"#;
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}
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impl DspNode for Quant {
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fn outputs() -> usize { 1 }
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fn set_sample_rate(&mut self, _srate: f32) { }
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fn reset(&mut self) { }
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#[inline]
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fn process<T: NodeAudioContext>(
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&mut self, ctx: &mut T, _ectx: &mut NodeExecContext,
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nctx: &NodeContext,
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atoms: &[SAtom], inputs: &[ProcBuf],
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outputs: &mut [ProcBuf], ctx_vals: LedPhaseVals)
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{
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use crate::dsp::{at, out, inp, denorm};
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let freq = inp::Quant::freq(inputs);
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let oct = inp::Quant::oct(inputs);
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let keys = at::Quant::keys(atoms);
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let out = out::Quant::sig(outputs);
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self.quant.set_keys(keys.i());
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// let mut last_key = 0;
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for frame in 0..ctx.nframes() {
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let pitch = self.quant.process(freq.read(frame));
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out.write(frame, pitch + denorm::Quant::oct(oct, frame));
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}
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// let last_pitch = self.quant.last_key_pitch();
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// ctx_vals[1].set(last_pitch * 10.0 + 0.0001);
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// ctx_vals[0].set((last_pitch * 10.0 - 0.5) * 2.0);
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}
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}
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