116 lines
4.6 KiB
Rust
116 lines
4.6 KiB
Rust
// Copyright (c) 2022 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::dsp::{
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at, denorm, inp, out_idx, DspNode, LedPhaseVals, NodeContext, NodeId, ProcBuf, SAtom,
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};
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use crate::nodes::{NodeAudioContext, NodeExecContext};
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#[macro_export]
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macro_rules! fa_midip_chan {
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($formatter: expr, $v: expr, $denorm_v: expr) => {{
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write!($formatter, "{}", $v.round() as usize)
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}};
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}
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/// The (stereo) output port of the plugin
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#[derive(Debug, Clone)]
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pub struct MidiP {
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prev_gate: u8,
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}
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impl MidiP {
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pub fn new(_nid: &NodeId) -> Self {
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Self { prev_gate: 0 }
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}
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pub const chan: &'static str = "MidiP chan\nMIDI Channel 0 to 15\n";
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pub const det: &'static str = "MidiP det\nDetune input pitch a bit\nRange: (-1..1)";
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pub const freq: &'static str =
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"MidiP freq\nMIDI note frequency, detuned by 'det'.\nRange: (-1..1)";
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pub const gate: &'static str = "MidiP gate\nMIDI note gate\nRange: (0..1)";
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pub const vel: &'static str = "MidiP vel\nMIDI note velocity\nRange: (0..1)";
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pub const ch1: &'static str = "MidiP ch1\nAudio channel 1 (left)\nRange: (-1..1)";
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pub const ch2: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const ch3: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const ch4: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const ch5: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const ch6: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const ch7: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const ch8: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const ch9: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const ch10: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const ch11: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const ch12: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const ch13: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const ch14: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const ch15: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const ch16: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const ch17: &'static str = "MidiP ch2\nAudio channel 2 (right)\nRange: (-1..1)";
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pub const DESC: &'static str = "Audio Output Port\n\n\
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This output port node allows you to send audio signals \
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to audio devices or tracks in your DAW.";
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pub const HELP: &'static str = r#"Audio Output Port
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This output port node allows you to send audio signals to audio devices
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or tracks in your DAW. If you need a stereo output but only have a mono
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signal you can use the 'mono' setting to duplicate the signal on the 'ch1'
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input to the second channel 'ch2'.
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"#;
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}
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impl DspNode for MidiP {
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fn outputs() -> usize {
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0
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}
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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,
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ctx: &mut T,
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ectx: &mut NodeExecContext,
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_nctx: &NodeContext,
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atoms: &[SAtom],
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_inputs: &[ProcBuf],
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outputs: &mut [ProcBuf],
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ctx_vals: LedPhaseVals,
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) {
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let out_i = out_idx::MidiP::gate();
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let (freq, r) = outputs.split_at_mut(out_i);
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let (gate, vel) = r.split_at_mut(1);
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let freq = &mut freq[0];
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let gate = &mut gate[0];
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let vel = &mut vel[0];
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for frame in 0..ctx.nframes() {
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let chan = ectx.note_buffer.get_chan_at(0, frame as u8);
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let note = (chan.note as f32 - 57.0) / 120.0;
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freq.write(frame, note);
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if chan.gate > 0 {
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// insert a single sample of silence, for retriggering
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// any envelopes if the note changed but no note-off came.
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if self.prev_gate > 0 && self.prev_gate != chan.gate {
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gate.write(frame, 0.0);
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} else {
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gate.write(frame, 1.0);
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}
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} else {
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gate.write(frame, 0.0);
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}
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self.prev_gate = chan.gate;
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vel.write(frame, chan.vel as f32);
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}
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let last_val = gate.read(ctx.nframes() - 1);
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ctx_vals[0].set(last_val);
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}
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}
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