120 lines
4.2 KiB
Rust
120 lines
4.2 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::{at, out_idx, DspNode, LedPhaseVals, NodeContext, NodeId, ProcBuf, SAtom};
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use crate::nodes::{HxMidiEvent, MidiEventPointer, NodeAudioContext, NodeExecContext};
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#[macro_export]
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macro_rules! fa_midicc_cc {
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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 MidiCC {
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cur_cc1: f32,
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cur_cc2: f32,
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cur_cc3: f32,
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}
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impl MidiCC {
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pub fn new(_nid: &NodeId) -> Self {
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Self { cur_cc1: 0.0, cur_cc2: 0.0, cur_cc3: 0.0 }
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}
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pub const chan: &'static str = "MidiCC chan\nMIDI Channel 0 to 15\n";
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pub const slew: &'static str = "MidiCC slew\nSlew limiter for the 3 CCs\n- 'MIDI' gate same as MIDI input\n- 'Trigger' output only triggers on 'gate' output\n- 'Gate Len' output gate with the length of the 'gatel' parameter\n";
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pub const cc1: &'static str = "MidiCC cc1\nMIDI selected CC";
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pub const cc2: &'static str = "MidiCC cc1\nMIDI selected CC";
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pub const cc3: &'static str = "MidiCC cc1\nMIDI selected CC";
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pub const sig1: &'static str = "MidiCC sig1\nCC output channel 1\nRange: (0..1)";
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pub const sig2: &'static str = "MidiCC sig1\nCC output channel 1\nRange: (0..1)";
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pub const sig3: &'static str = "MidiCC sig1\nCC output channel 1\nRange: (0..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 MidiCC {
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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 chan = at::MidiCC::chan(atoms);
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let cc1 = at::MidiCC::cc1(atoms);
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let cc2 = at::MidiCC::cc2(atoms);
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let cc3 = at::MidiCC::cc3(atoms);
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let sig2_i = out_idx::MidiCC::sig2();
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let (sig1, r) = outputs.split_at_mut(sig2_i);
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let (sig2, sig3) = r.split_at_mut(1);
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let sig1 = &mut sig1[0];
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let sig2 = &mut sig2[0];
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let sig3 = &mut sig3[0];
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let midicc_channel = (chan.i() as usize % 16) as u8;
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let midicc_cc1 = (cc1.i() as usize % 128) as u8;
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let midicc_cc2 = (cc2.i() as usize % 128) as u8;
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let midicc_cc3 = (cc3.i() as usize % 128) as u8;
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let mut ptr = MidiEventPointer::new(&ectx.midi_ccs[..]);
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let mut change = false;
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for frame in 0..ctx.nframes() {
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while let Some(ev) = ptr.next_at(frame) {
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match ev {
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HxMidiEvent::CC { channel, cc, value } => {
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if channel != midicc_channel {
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continue;
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}
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if cc == midicc_cc1 {
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self.cur_cc1 = value;
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change = true;
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} else if cc == midicc_cc2 {
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self.cur_cc2 = value;
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change = true;
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} else if cc == midicc_cc3 {
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self.cur_cc3 = value;
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change = true;
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}
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}
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_ => (),
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}
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}
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sig1.write(frame, self.cur_cc1);
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sig2.write(frame, self.cur_cc2);
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sig3.write(frame, self.cur_cc3);
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}
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ctx_vals[0].set(if change { 1.0 } else { 0.0 });
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}
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}
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