98 lines
2.5 KiB
Rust
98 lines
2.5 KiB
Rust
// Copyright (c) 2021 Weird Constructor <weirdconstructor@gmail.com>
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// This is a part of HexoDSP. Released under (A)GPLv3 or any 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};
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/// A simple amplifier
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#[derive(Debug, Clone)]
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pub struct FbWr {
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fb_index: u8,
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}
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impl FbWr {
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pub fn new(nid: &NodeId) -> Self {
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Self {
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fb_index: nid.instance() as u8,
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}
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}
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pub const inp : &'static str =
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"FbWr inp\nSignal input\nRange: (-1..1)\n";
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}
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impl DspNode for FbWr {
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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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atoms: &[SAtom], _params: &[ProcBuf], inputs: &[ProcBuf],
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outputs: &mut [ProcBuf], ctx_vals: LedPhaseVals)
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{
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use crate::dsp::{inp};
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let inp = inp::FbWr::inp(inputs);
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for frame in 0..ctx.nframes() {
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ectx.feedback_delay_buffers[self.fb_index as usize]
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.write(inp.read(frame));
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}
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ctx_vals[0].set(inp.read(ctx.nframes() - 1));
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}
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}
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/// A simple amplifier
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#[derive(Debug, Clone)]
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pub struct FbRd {
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fb_index: u8,
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}
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impl FbRd {
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pub fn new(nid: &NodeId) -> Self {
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Self {
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fb_index: nid.instance() as u8,
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}
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}
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pub const atv : &'static str =
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"FbRd atv\nAttenuate or invert input.\n\
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Use this to adjust the feedback amount.\nRange: (0..1)\n";
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pub const sig : &'static str =
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"FbRd sig\nFeedback signal output.\nRange: (-1..1)\n";
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}
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impl DspNode for FbRd {
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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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atoms: &[SAtom], _params: &[ProcBuf], inputs: &[ProcBuf],
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outputs: &mut [ProcBuf], ctx_vals: LedPhaseVals)
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{
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use crate::dsp::{out, inp, denorm};
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let atv = inp::FbRd::atv(inputs);
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let sig = out::FbRd::sig(outputs);
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let mut last_val = 0.0;
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for frame in 0..ctx.nframes() {
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last_val =
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ectx.feedback_delay_buffers[self.fb_index as usize]
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.read();
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last_val *= denorm::FbRd::atv(atv, frame);
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sig.write(frame, last_val);
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}
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ctx_vals[0].set(last_val);
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}
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}
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