HexoDSP/src/dsp/node_mix3.rs

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// Copyright (c) 2021 Weird Constructor <weirdconstructor@gmail.com>
// This is a part of HexoDSP. Released under (A)GPLv3 or any later.
// See README.md and COPYING for details.
use crate::nodes::{NodeAudioContext, NodeExecContext};
use crate::dsp::{NodeId, SAtom, ProcBuf, DspNode, LedPhaseVals, NodeContext};
/// A simple amplifier
#[derive(Debug, Clone)]
pub struct Mix3 {
}
impl Mix3 {
pub fn new(_nid: &NodeId) -> Self {
Self {
}
}
pub const ch1 : &'static str =
"Mix3 inp\nChannel 1 Signal input\nRange: (-1..1)\n";
pub const ch2 : &'static str =
"Mix3 inp2\nChannel 2 Signal input\nRange: (-1..1)\n";
pub const ch3 : &'static str =
"Mix3 inp3\nChannel 3 Signal input\nRange: (-1..1)\n";
pub const gain1 : &'static str =
"Mix3 gain1\nChannel 1 gain\nRange: (0..1)";
pub const gain2 : &'static str =
"Mix3 gain2\nChannel 2 gain\nRange: (0..1)";
pub const gain3 : &'static str =
"Mix3 gain3\nChannel 3 gain\nRange: (0..1)";
pub const ogain : &'static str =
"Mix3 ogain\nOutput gain of the sum\nRange: (0..1)";
pub const sig : &'static str =
"Mix3 sig\nMixed signal output\nRange: (-1..1)\n";
pub const DESC : &'static str =
r#"3 Ch. Signal Mixer
A very simple 3 channel signal mixer.
You can mix anything, from audio signals to control signals.
"#;
pub const HELP : &'static str =
r#"Mix3 - 3 Channel Signal Mixer
Just a small 3 channel mixer to create a sum of multiple signals.
You can mix anything, from audio signals to control signals.
There is even a convenient output gain knob,
to turn down the output.
"#;
}
impl DspNode for Mix3 {
fn outputs() -> usize { 1 }
fn set_sample_rate(&mut self, _srate: f32) { }
fn reset(&mut self) { }
#[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::{out, inp, denorm};
let inp1 = inp::Mix3::ch1(inputs);
let inp2 = inp::Mix3::ch2(inputs);
let inp3 = inp::Mix3::ch3(inputs);
let g1 = inp::Mix3::gain1(inputs);
let g2 = inp::Mix3::gain2(inputs);
let g3 = inp::Mix3::gain3(inputs);
let og = inp::Mix3::ogain(inputs);
let out = out::Mix3::sig(outputs);
for frame in 0..ctx.nframes() {
let sum =
inp1.read(frame) * denorm::Mix3::gain1(g1, frame)
+ inp2.read(frame) * denorm::Mix3::gain2(g2, frame)
+ inp3.read(frame) * denorm::Mix3::gain3(g3, frame);
out.write(frame, sum * denorm::Mix3::ogain(og, frame));
}
ctx_vals[0].set(
out.read(ctx.nframes() - 1));
}
}