100 lines
3.2 KiB
Rust
100 lines
3.2 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;
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use crate::dsp::{SAtom, ProcBuf, DspNode, LedPhaseVals};
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/// A simple amplifier
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#[derive(Debug, Clone)]
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pub struct Sampl {
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sample_idx: usize,
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}
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impl Sampl {
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pub fn new() -> Self {
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Self {
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sample_idx: 0,
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}
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}
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pub const freq : &'static str =
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"Sampl freq\nPitch input for the sampler, giving the playback speed of the\
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sample.\nRange: (-1..1)\n";
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pub const sample : &'static str =
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"Sampl sample\nThe audio sample that is played back.\nRange: (-1..1)\n";
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pub const sig : &'static str =
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"Sampl sig\nSampler audio output\nRange: (-1..1)\n";
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}
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impl DspNode for Sampl {
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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, atoms: &[SAtom], _params: &[ProcBuf],
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inputs: &[ProcBuf], outputs: &mut [ProcBuf], ctx_vals: LedPhaseVals)
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{
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use crate::dsp::{out, at, inp, denorm}; //, inp, denorm, denorm_v, inp_dir, at};
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let sample = at::Sampl::sample(atoms);
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let freq = inp::Sampl::freq(inputs);
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let out = out::Sampl::sig(outputs);
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if let SAtom::AudioSample((_, Some(sample_data))) = sample {
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let sd_len = sample_data.len() - 1;
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for frame in 0..ctx.nframes() {
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let speed = denorm::Sampl::freq(freq, frame) / 440.0;
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let sd = sample_data[self.sample_idx % sd_len + 1];
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out.write(frame, sd);
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self.sample_idx += (1.0 * speed).ceil() as usize;
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}
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} else {
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for frame in 0..ctx.nframes() {
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out.write(frame, 0.0);
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}
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}
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ctx_vals[0].set(1.0);
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// let neg = at::Amp::neg_att(atoms);
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//
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// let last_frame = ctx.nframes() - 1;
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//
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// let last_val =
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// if neg.i() > 0 {
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// for frame in 0..ctx.nframes() {
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// out.write(frame,
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// inp.read(frame)
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// * denorm_v::Amp::att(
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// inp_dir::Amp::att(att, frame)
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// .max(0.0))
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// * denorm::Amp::gain(gain, frame));
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// }
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//
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// inp.read(last_frame)
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// * denorm_v::Amp::att(
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// inp_dir::Amp::att(att, last_frame)
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// .max(0.0))
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// * denorm::Amp::gain(gain, last_frame)
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//
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// } else {
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// for frame in 0..ctx.nframes() {
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// out.write(frame,
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// inp.read(frame)
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// * denorm_v::Amp::att(
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// inp_dir::Amp::att(att, frame).abs())
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// * denorm::Amp::gain(gain, frame));
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// }
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//
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// inp.read(last_frame)
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// * denorm_v::Amp::att(
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// inp_dir::Amp::att(att, last_frame).abs())
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// * denorm::Amp::gain(gain, last_frame)
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// };
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}
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}
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