commit 8629085d0ec9ec2ea231f14608265b52d996ec36
parent 799027d1080c0796c96d0451f4f90d59d64cb781
Author: minerva-jupiter <ryouturn@gmail.com>
Date: Thu, 30 Apr 2026 07:06:18 +0900
feat(synth): Implement initial polyphonic synthesizer
Diffstat:
| A | Cargo.lock | | | 1127 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| M | Cargo.toml | | | 7 | ++++--- |
| M | README.md | | | 2 | +- |
| M | src/lib.rs | | | 895 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------- |
4 files changed, 1939 insertions(+), 92 deletions(-)
diff --git a/Cargo.lock b/Cargo.lock
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diff --git a/Cargo.toml b/Cargo.toml
@@ -1,5 +1,5 @@
[package]
-name = "Molyxide"
+name = "molyxide"
version = "0.1.0"
edition = "2021"
authors = ["Minerva_Juppiter <contact@minervajuppiter.net>"]
@@ -16,10 +16,11 @@ crate-type = ["cdylib"]
[dependencies]
# Remove the `assert_process_allocs` feature to allow allocations on the audio
# thread in debug builds.
-nih_plug = { git = "https://github.com/robbert-vdh/nih-plug.git", features = ["assert_process_allocs"] }
+# nih_plug = { git = "https://github.com/robbert-vdh/nih-plug.git", features = ["assert_process_allocs"] }
# Uncomment the below line to disable the on-by-default VST3 feature to remove
# the GPL compatibility requirement
-# nih_plug = { git = "https://github.com/robbert-vdh/nih-plug.git", default-features = false, features = ["assert_process_allocs"] }
+nih_plug = { git = "https://github.com/robbert-vdh/nih-plug.git", default-features = false, features = ["assert_process_allocs"] }
+rand = "0.10.1"
[profile.release]
lto = "thin"
diff --git a/README.md b/README.md
@@ -5,5 +5,5 @@
After installing [Rust](https://rustup.rs/), you can compile Molyxide as follows:
```shell
-cargo xtask bundle Molyxide --release
+cargo xtask bundle molyxide --release
```
diff --git a/src/lib.rs b/src/lib.rs
@@ -1,58 +1,690 @@
use nih_plug::prelude::*;
use std::sync::Arc;
-// This is a shortened version of the gain example with most comments removed, check out
-// https://github.com/robbert-vdh/nih-plug/blob/master/plugins/examples/gain/src/lib.rs to get
-// started
+// --- Enums ---
-struct Molyxide {
- params: Arc<MolyxideParams>,
+#[derive(Enum, PartialEq, Clone, Copy)]
+pub enum WaveformSelection {
+ #[name = "Sawtooth"]
+ Saw,
+ #[name = "Square"]
+ Square,
+ #[name = "Saw + Square"]
+ Both,
+}
+
+#[derive(Enum, PartialEq, Clone, Copy)]
+pub enum ResonatorMode {
+ #[name = "Low Pass"]
+ LowPass,
+ #[name = "Band Pass"]
+ BandPass,
+ #[name = "High Pass"]
+ HighPass,
+}
+
+#[derive(Enum, PartialEq, Clone, Copy)]
+pub enum FilterAlgorithm {
+ #[name = "Biquad (Standard)"]
+ Biquad,
+ #[name = "ZDF SVF (Analog-style)"]
+ ZdfSvf,
+}
+
+#[derive(Enum, PartialEq, Clone, Copy)]
+pub enum FinalDecayMode {
+ #[name = "Lock (No Release)"]
+ Lock,
+ #[name = "Manual (Release On)"]
+ Manual,
+}
+
+// --- DSP Modules ---
+
+/// ZDF SVF (Topology Preserving Transform)
+struct ZdfSvf {
+ s1: f32,
+ s2: f32,
+}
+
+impl ZdfSvf {
+ fn new() -> Self {
+ Self { s1: 0.0, s2: 0.0 }
+ }
+ fn process(&mut self, input: f32, mode: ResonatorMode, freq: f32, emph: f32, sr: f32) -> f32 {
+ let q = (0.5 + emph * 9.5).max(0.01);
+ let g = (std::f32::consts::PI * freq / sr).tan();
+ let k = 1.0 / q;
+ let a1 = 1.0 / (1.0 + g * (g + k));
+ let a2 = g * a1;
+ let a3 = g * a2;
+ let m_v3 = input - self.s2;
+ let v1 = a1 * self.s1 + a2 * m_v3;
+ let v2 = self.s2 + a2 * self.s1 + a3 * m_v3;
+ self.s1 = 2.0 * v1 - self.s1;
+ self.s2 = 2.0 * v2 - self.s2;
+ match mode {
+ ResonatorMode::LowPass => v2,
+ ResonatorMode::BandPass => v1,
+ ResonatorMode::HighPass => input - k * v1 - v2,
+ }
+ }
+}
+
+/// ZDF Ladder Filter (24dB/oct)
+/// Moog ăčăżă€ă«ăź 4-pole ăăŒăăčăăŁă«ăżăŒ
+struct LadderFilter {
+ s: [f32; 4],
+}
+
+impl LadderFilter {
+ fn new() -> Self {
+ Self { s: [0.0; 4] }
+ }
+ fn process(&mut self, input: f32, cutoff: f32, resonance: f32, sr: f32) -> f32 {
+ let g = (std::f32::consts::PI * cutoff / sr).tan();
+ let k = 4.0 * resonance.clamp(0.0, 0.99); // èȘć±æŻăéżăăăăćŸźèȘżæŽ
+
+ // 1-pole äżæ°
+ let a = 1.0 / (1.0 + g);
+
+ // ăăŁăŒăăăăŻèŁæŁ
+ let g_pow4 = g * g * g * g;
+ let sigma = g_pow4 * a * a * a * a;
+ let gamma = 1.0 / (1.0 + k * sigma);
+
+ // ć
éšç¶æ
ăăăźăăŁăŒăăăăŻ
+ let input_fb = (input
+ - k * (self.s[0] * a
+ + self.s[1] * a * a
+ + self.s[2] * a * a * a
+ + self.s[3] * a * a * a * a))
+ * gamma;
+
+ // 4æź”ăź 1-pole ăăŁă«ăżăŒăźçŽććŠç
+ let mut vin = input_fb;
+ for i in 0..4 {
+ let v = (vin - self.s[i]) * g * a;
+ let out = v + self.s[i];
+ self.s[i] = out + v;
+ vin = out;
+ }
+
+ vin // 4æź”çźăźćșć
+ }
+}
+
+// --- Parameters ---
+
+#[derive(Params)]
+pub struct MixerParams {
+ #[id = "m_tune"]
+ pub master_tune: FloatParam,
+ #[id = "mix_dir"]
+ pub direct: FloatParam,
+ #[id = "mix_mode"]
+ pub mode: FloatParam,
+ #[id = "mix_res"]
+ pub resonator: FloatParam,
+ #[id = "mix_vcf"]
+ pub vcf: FloatParam,
+}
+
+#[derive(Params)]
+pub struct OscParams {
+ #[id = "l_wave"]
+ pub lower_waveshape: EnumParam<WaveformSelection>,
+ #[id = "u_wave"]
+ pub upper_waveshape: EnumParam<WaveformSelection>,
+ #[id = "l_pw"]
+ pub lower_pw: FloatParam,
+ #[id = "u_pw"]
+ pub upper_pw: FloatParam,
+ #[id = "l_mix"]
+ pub lower_mix: FloatParam,
+ #[id = "u_mix"]
+ pub upper_mix: FloatParam,
+ #[id = "rank_a_tune"]
+ pub rank_a_tune: FloatParam,
+ #[id = "rank_b_beat"]
+ pub rank_b_beat: FloatParam,
+ #[id = "pwm_rate"]
+ pub pwm_rate: FloatParam,
+ #[id = "pwm_amt"]
+ pub pwm_amt: FloatParam,
+ #[id = "fm_rate"]
+ pub fm_rate: FloatParam,
+ #[id = "fm_amt"]
+ pub fm_amt: FloatParam,
+}
+
+#[derive(Params)]
+pub struct ResonatorParams {
+ #[id = "res_on"]
+ pub enabled: BoolParam,
+ #[id = "res_mode"]
+ pub mode: EnumParam<ResonatorMode>,
+ #[id = "res_l_cf"]
+ pub low_cf: FloatParam,
+ #[id = "res_l_emph"]
+ pub low_emph: FloatParam,
+ #[id = "res_l_gain"]
+ pub low_gain: FloatParam,
+ #[id = "res_m_cf"]
+ pub mid_cf: FloatParam,
+ #[id = "res_m_emph"]
+ pub mid_emph: FloatParam,
+ #[id = "res_m_gain"]
+ pub mid_gain: FloatParam,
+ #[id = "res_h_cf"]
+ pub high_cf: FloatParam,
+ #[id = "res_h_emph"]
+ pub high_emph: FloatParam,
+ #[id = "res_h_gain"]
+ pub high_gain: FloatParam,
+}
+
+#[derive(Params)]
+pub struct VcfParams {
+ #[id = "vcf_on"]
+ pub enabled: BoolParam,
+ #[id = "vcf_cutoff"]
+ pub cutoff: FloatParam,
+ #[id = "vcf_emph"]
+ pub emphasis: FloatParam,
+ #[id = "vcf_kb"]
+ pub kb_track: FloatParam,
+ #[id = "vcf_glide"]
+ pub kb_glide: FloatParam,
+ #[id = "vcf_lfo_r"]
+ pub lfo_rate: FloatParam,
+ #[id = "vcf_lfo_a"]
+ pub lfo_amt: FloatParam,
+ #[id = "vcf_lfo_sh"]
+ pub lfo_sh: FloatParam,
+ #[id = "vcf_env_a"]
+ pub attack: FloatParam,
+ #[id = "vcf_env_d"]
+ pub decay: FloatParam,
+ #[id = "vcf_env_s"]
+ pub sustain: FloatParam,
+ #[id = "vcf_env_amt"]
+ pub env_amt: FloatParam,
+}
+
+#[derive(Params)]
+pub struct AmpParams {
+ #[id = "amp_a"]
+ pub attack: FloatParam,
+ #[id = "amp_s"]
+ pub sustain: FloatParam,
+ #[id = "amp_dr"]
+ pub decay_release: FloatParam,
+ #[id = "amp_vel"]
+ pub velocity: FloatParam,
+ #[id = "amp_f_dec"]
+ pub final_decay: EnumParam<FinalDecayMode>,
}
#[derive(Params)]
struct MolyxideParams {
- /// The parameter's ID is used to identify the parameter in the wrappred plugin API. As long as
- /// these IDs remain constant, you can rename and reorder these fields as you wish. The
- /// parameters are exposed to the host in the same order they were defined. In this case, this
- /// gain parameter is stored as linear gain while the values are displayed in decibels.
+ #[nested(group = "1. Mixer & Tune")]
+ pub mixer: MixerParams,
+ #[nested(group = "2. Oscillators")]
+ pub osc: OscParams,
+ #[nested(group = "3. Resonator")]
+ pub res: ResonatorParams,
+ #[nested(group = "4. VCF (Master Filter)")]
+ pub vcf: VcfParams,
+ #[nested(group = "5. Loudness (Per-Voice)")]
+ pub amp: AmpParams,
#[id = "gain"]
pub gain: FloatParam,
}
-impl Default for Molyxide {
+impl Default for MolyxideParams {
fn default() -> Self {
Self {
- params: Arc::new(MolyxideParams::default()),
+ mixer: MixerParams {
+ master_tune: FloatParam::new(
+ "Master Tune",
+ 0.0,
+ FloatRange::Linear {
+ min: -200.0,
+ max: 200.0,
+ },
+ ),
+ direct: FloatParam::new(
+ "Direct Level",
+ 0.5,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ mode: FloatParam::new("Mode Level", 0.0, FloatRange::Linear { min: 0.0, max: 1.0 }),
+ resonator: FloatParam::new(
+ "Resonator Level",
+ 0.5,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ vcf: FloatParam::new("VCF Level", 0.5, FloatRange::Linear { min: 0.0, max: 1.0 }),
+ },
+ osc: OscParams {
+ lower_waveshape: EnumParam::new("Lower Waveshape", WaveformSelection::Saw),
+ upper_waveshape: EnumParam::new("Upper Waveshape", WaveformSelection::Square),
+ lower_pw: FloatParam::new(
+ "Lower PW",
+ 0.5,
+ FloatRange::Linear {
+ min: 0.05,
+ max: 0.5,
+ },
+ ),
+ upper_pw: FloatParam::new(
+ "Upper PW",
+ 0.2,
+ FloatRange::Linear {
+ min: 0.05,
+ max: 0.5,
+ },
+ ),
+ lower_mix: FloatParam::new(
+ "Lower Rank Mix",
+ 0.5,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ upper_mix: FloatParam::new(
+ "Upper Rank Mix",
+ 0.5,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ rank_a_tune: FloatParam::new(
+ "Rank A Tune",
+ 0.0,
+ FloatRange::Linear {
+ min: -600.0,
+ max: 600.0,
+ },
+ ),
+ rank_b_beat: FloatParam::new(
+ "Rank B Beat",
+ 0.0,
+ FloatRange::Linear {
+ min: -50.0,
+ max: 50.0,
+ },
+ ),
+ pwm_rate: FloatParam::new(
+ "PWM Rate",
+ 0.5,
+ FloatRange::Skewed {
+ min: 0.05,
+ max: 25.0,
+ factor: FloatRange::skew_factor(-0.5),
+ },
+ ),
+ pwm_amt: FloatParam::new(
+ "PWM Amount",
+ 0.0,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ fm_rate: FloatParam::new(
+ "FM Rate",
+ 6.0,
+ FloatRange::Skewed {
+ min: 0.05,
+ max: 25.0,
+ factor: FloatRange::skew_factor(-0.5),
+ },
+ ),
+ fm_amt: FloatParam::new(
+ "FM Amount",
+ 0.0,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ },
+ res: ResonatorParams {
+ enabled: BoolParam::new("Resonator Enabled", true),
+ mode: EnumParam::new("Pass Mode", ResonatorMode::LowPass),
+ low_cf: FloatParam::new(
+ "Low CF",
+ 200.0,
+ FloatRange::Skewed {
+ min: 20.0,
+ max: 20000.0,
+ factor: FloatRange::skew_factor(-0.9),
+ },
+ ),
+ low_emph: FloatParam::new(
+ "Low Emphasis",
+ 0.0,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ low_gain: FloatParam::new(
+ "Low Gain",
+ 0.5,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ mid_cf: FloatParam::new(
+ "Mid CF",
+ 1000.0,
+ FloatRange::Skewed {
+ min: 20.0,
+ max: 20000.0,
+ factor: FloatRange::skew_factor(-0.9),
+ },
+ ),
+ mid_emph: FloatParam::new(
+ "Mid Emphasis",
+ 0.0,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ mid_gain: FloatParam::new(
+ "Mid Gain",
+ 0.5,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ high_cf: FloatParam::new(
+ "High CF",
+ 5000.0,
+ FloatRange::Skewed {
+ min: 20.0,
+ max: 20000.0,
+ factor: FloatRange::skew_factor(-0.9),
+ },
+ ),
+ high_emph: FloatParam::new(
+ "High Emphasis",
+ 0.0,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ high_gain: FloatParam::new(
+ "High Gain",
+ 0.5,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ },
+ vcf: VcfParams {
+ enabled: BoolParam::new("VCF Enabled", true),
+ cutoff: FloatParam::new(
+ "VCF Cutoff",
+ 20000.0,
+ FloatRange::Skewed {
+ min: 20.0,
+ max: 20000.0,
+ factor: FloatRange::skew_factor(-0.9),
+ },
+ ),
+ emphasis: FloatParam::new(
+ "VCF Emphasis",
+ 0.0,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ kb_track: FloatParam::new(
+ "Keyboard Track",
+ 1.0,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ kb_glide: FloatParam::new(
+ "Keyboard Glide",
+ 0.0,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ lfo_rate: FloatParam::new(
+ "VCF LFO Rate",
+ 6.0,
+ FloatRange::Skewed {
+ min: 0.05,
+ max: 25.0,
+ factor: FloatRange::skew_factor(-0.5),
+ },
+ ),
+ lfo_amt: FloatParam::new(
+ "VCF LFO Amount",
+ 0.0,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ lfo_sh: FloatParam::new(
+ "VCF S&H Amount",
+ 0.0,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ attack: FloatParam::new(
+ "VCF Attack",
+ 0.01,
+ FloatRange::Skewed {
+ min: 0.01,
+ max: 10.0,
+ factor: FloatRange::skew_factor(-0.8),
+ },
+ ),
+ decay: FloatParam::new(
+ "VCF Decay",
+ 0.1,
+ FloatRange::Skewed {
+ min: 0.01,
+ max: 10.0,
+ factor: FloatRange::skew_factor(-0.8),
+ },
+ ),
+ sustain: FloatParam::new(
+ "VCF Sustain",
+ 1.0,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ env_amt: FloatParam::new(
+ "VCF Envelope Amount",
+ 0.0,
+ FloatRange::Linear {
+ min: -1.0,
+ max: 1.0,
+ },
+ ),
+ },
+ amp: AmpParams {
+ attack: FloatParam::new(
+ "Amp Attack",
+ 0.01,
+ FloatRange::Skewed {
+ min: 0.01,
+ max: 10.0,
+ factor: FloatRange::skew_factor(-0.8),
+ },
+ ),
+ sustain: FloatParam::new(
+ "Amp Sustain",
+ 1.0,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ decay_release: FloatParam::new(
+ "Amp Decay/Release",
+ 0.1,
+ FloatRange::Skewed {
+ min: 0.01,
+ max: 10.0,
+ factor: FloatRange::skew_factor(-0.8),
+ },
+ ),
+ velocity: FloatParam::new(
+ "Keyboard Dynamics",
+ 0.5,
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
+ final_decay: EnumParam::new("Final Decay", FinalDecayMode::Manual),
+ },
+ gain: FloatParam::new(
+ "Gain",
+ util::db_to_gain(0.0),
+ FloatRange::Linear { min: 0.0, max: 1.0 },
+ ),
}
}
}
-impl Default for MolyxideParams {
- fn default() -> Self {
+// --- TOG (Top Octave Generator) ---
+
+struct TopOctaveGenerator {
+ phases: [f64; 12],
+ wrap_counts: [u64; 12],
+}
+
+impl TopOctaveGenerator {
+ fn new() -> Self {
Self {
- // This gain is stored as linear gain. NIH-plug comes with useful conversion functions
- // to treat these kinds of parameters as if we were dealing with decibels. Storing this
- // as decibels is easier to work with, but requires a conversion for every sample.
- gain: FloatParam::new(
- "Gain",
- util::db_to_gain(0.0),
- FloatRange::Skewed {
- min: util::db_to_gain(-30.0),
- max: util::db_to_gain(30.0),
- // This makes the range appear as if it was linear when displaying the values as
- // decibels
- factor: FloatRange::gain_skew_factor(-30.0, 30.0),
- },
+ phases: [0.0; 12],
+ wrap_counts: [0; 12],
+ }
+ }
+ fn process(&mut self, sample_rate: f32, frequencies: &[f32; 12]) {
+ for i in 0..12 {
+ self.phases[i] += frequencies[i] as f64 / sample_rate as f64;
+ if self.phases[i] >= 1.0 {
+ self.phases[i] -= 1.0;
+ self.wrap_counts[i] = self.wrap_counts[i].wrapping_add(1);
+ }
+ }
+ }
+}
+
+// --- Poly Chip ---
+
+const NUM_CHIPS: usize = 71;
+const BASE_NOTE: u8 = 29; // F1
+
+struct PolyChip {
+ note: u8,
+ tog_index: usize,
+ division: f64,
+ gate: bool,
+ velocity: f32,
+ samples_since_on: u32,
+ samples_since_off: u32,
+ release_start_level: f32,
+}
+
+impl PolyChip {
+ fn new(note: u8) -> Self {
+ let tog_index = (note % 12) as usize;
+ let division = 2.0f64.powi((108 + (tog_index as i32) - (note as i32)) / 12);
+ Self {
+ note,
+ tog_index,
+ division,
+ gate: false,
+ velocity: 0.0,
+ samples_since_on: 0,
+ samples_since_off: 0,
+ release_start_level: 0.0,
+ }
+ }
+ fn get_envelope(&self, params: &AmpParams, sr: f32) -> f32 {
+ let a = params.attack.value();
+ let dr = params.decay_release.value();
+ let s = params.sustain.value();
+ if self.gate {
+ let t = self.samples_since_on as f32 / sr;
+ if t < a {
+ t / a.max(0.0001)
+ } else {
+ 1.0 - ((t - a) / dr.max(0.0001)).clamp(0.0, 1.0) * (1.0 - s)
+ }
+ } else {
+ let t = self.samples_since_off as f32 / sr;
+ if params.final_decay.value() == FinalDecayMode::Manual {
+ self.release_start_level * (1.0 - (t / dr.max(0.0001)).clamp(0.0, 1.0))
+ } else {
+ 0.0
+ }
+ }
+ }
+ fn process(
+ &mut self,
+ t_a: f64,
+ w_a: u64,
+ t_b: f64,
+ w_b: u64,
+ params: &MolyxideParams,
+ sr: f32,
+ pwm: f32,
+ ) -> f32 {
+ let env = self.get_envelope(¶ms.amp, sr);
+ if !self.gate && env <= 0.0 {
+ return 0.0;
+ }
+ let (ws, base_pw, mix) = if self.note < 49 {
+ (
+ params.osc.lower_waveshape.value(),
+ params.osc.lower_pw.value(),
+ params.osc.lower_mix.value(),
)
- // Because the gain parameter is stored as linear gain instead of storing the value as
- // decibels, we need logarithmic smoothing
- .with_smoother(SmoothingStyle::Logarithmic(50.0))
- .with_unit(" dB")
- // There are many predefined formatters we can use here. If the gain was stored as
- // decibels instead of as a linear gain value, we could have also used the
- // `.with_step_size(0.1)` function to get internal rounding.
- .with_value_to_string(formatters::v2s_f32_gain_to_db(2))
- .with_string_to_value(formatters::s2v_f32_gain_to_db()),
+ } else {
+ (
+ params.osc.upper_waveshape.value(),
+ params.osc.upper_pw.value(),
+ params.osc.upper_mix.value(),
+ )
+ };
+ let p_a = ((w_a as f64 + t_a) / self.division).fract();
+ let sig_a = (p_a * 2.0 - 1.0) as f32;
+ let p_b = ((w_b as f64 + t_b) / self.division).fract();
+ let sig_b = if p_b
+ < (base_pw as f64 + pwm as f64 * params.osc.pwm_amt.value() as f64 * 0.4)
+ .clamp(0.05, 0.95)
+ {
+ 1.0
+ } else {
+ -1.0
+ };
+ let raw = match ws {
+ WaveformSelection::Saw => sig_a,
+ WaveformSelection::Square => sig_b,
+ WaveformSelection::Both => sig_a * mix + sig_b * (1.0 - mix),
+ };
+ if self.gate {
+ self.samples_since_on = self.samples_since_on.wrapping_add(1);
+ } else {
+ self.samples_since_off = self.samples_since_off.wrapping_add(1);
+ }
+ raw * env * (1.0 - (1.0 - self.velocity) * params.amp.velocity.value())
+ }
+}
+
+// --- Main Plugin ---
+
+struct Molyxide {
+ params: Arc<MolyxideParams>,
+ sample_rate: f32,
+ tog_a: TopOctaveGenerator,
+ tog_b: TopOctaveGenerator,
+ chips: Vec<PolyChip>,
+ fm_phase: f32,
+ pwm_phase: f32,
+ res_low: ZdfSvf,
+ res_mid: ZdfSvf,
+ res_high: ZdfSvf,
+ vcf: LadderFilter,
+ vcf_samples_on: u32,
+ vcf_last_note_id: u8,
+}
+
+impl Default for Molyxide {
+ fn default() -> Self {
+ let mut chips = Vec::with_capacity(NUM_CHIPS);
+ for i in 0..NUM_CHIPS {
+ chips.push(PolyChip::new(BASE_NOTE + i as u8));
+ }
+ Self {
+ params: Arc::new(MolyxideParams::default()),
+ sample_rate: 44100.0,
+ tog_a: TopOctaveGenerator::new(),
+ tog_b: TopOctaveGenerator::new(),
+ chips,
+ fm_phase: 0.0,
+ pwm_phase: 0.0,
+ res_low: ZdfSvf::new(),
+ res_mid: ZdfSvf::new(),
+ res_high: ZdfSvf::new(),
+ vcf: LadderFilter::new(),
+ vcf_samples_on: 0,
+ vcf_last_note_id: 0,
}
}
}
@@ -62,96 +694,183 @@ impl Plugin for Molyxide {
const VENDOR: &'static str = "Minerva_Juppiter";
const URL: &'static str = env!("CARGO_PKG_HOMEPAGE");
const EMAIL: &'static str = "contact@minervajuppiter.net";
-
const VERSION: &'static str = env!("CARGO_PKG_VERSION");
-
- // The first audio IO layout is used as the default. The other layouts may be selected either
- // explicitly or automatically by the host or the user depending on the plugin API/backend.
const AUDIO_IO_LAYOUTS: &'static [AudioIOLayout] = &[AudioIOLayout {
main_input_channels: NonZeroU32::new(2),
main_output_channels: NonZeroU32::new(2),
-
aux_input_ports: &[],
aux_output_ports: &[],
-
- // Individual ports and the layout as a whole can be named here. By default these names
- // are generated as needed. This layout will be called 'Stereo', while a layout with
- // only one input and output channel would be called 'Mono'.
names: PortNames::const_default(),
}];
-
-
- const MIDI_INPUT: MidiConfig = MidiConfig::None;
+ const MIDI_INPUT: MidiConfig = MidiConfig::Basic;
const MIDI_OUTPUT: MidiConfig = MidiConfig::None;
-
const SAMPLE_ACCURATE_AUTOMATION: bool = true;
-
- // If the plugin can send or receive SysEx messages, it can define a type to wrap around those
- // messages here. The type implements the `SysExMessage` trait, which allows conversion to and
- // from plain byte buffers.
type SysExMessage = ();
- // More advanced plugins can use this to run expensive background tasks. See the field's
- // documentation for more information. `()` means that the plugin does not have any background
- // tasks.
type BackgroundTask = ();
fn params(&self) -> Arc<dyn Params> {
self.params.clone()
}
-
fn initialize(
&mut self,
- _audio_io_layout: &AudioIOLayout,
- _buffer_config: &BufferConfig,
- _context: &mut impl InitContext<Self>,
+ _: &AudioIOLayout,
+ bc: &BufferConfig,
+ _: &mut impl InitContext<Self>,
) -> bool {
- // Resize buffers and perform other potentially expensive initialization operations here.
- // The `reset()` function is always called right after this function. You can remove this
- // function if you do not need it.
+ self.sample_rate = bc.sample_rate;
true
}
-
- fn reset(&mut self) {
- // Reset buffers and envelopes here. This can be called from the audio thread and may not
- // allocate. You can remove this function if you do not need it.
- }
-
fn process(
&mut self,
buffer: &mut Buffer,
- _aux: &mut AuxiliaryBuffers,
- _context: &mut impl ProcessContext<Self>,
+ _: &mut AuxiliaryBuffers,
+ context: &mut impl ProcessContext<Self>,
) -> ProcessStatus {
- for channel_samples in buffer.iter_samples() {
- // Smoothing is optionally built into the parameters themselves
- let gain = self.params.gain.smoothed.next();
+ let mut next_event = context.next_event();
+ let sr = self.sample_rate;
+ for (sample_id, channel_samples) in buffer.iter_samples().enumerate() {
+ while let Some(event) = next_event {
+ if event.timing() > sample_id as u32 {
+ break;
+ }
+ match event {
+ NoteEvent::NoteOn { note, velocity, .. } => {
+ if let Some(c) = self.chips.iter_mut().find(|c| c.note == note) {
+ c.gate = true;
+ c.velocity = velocity;
+ c.samples_since_on = 0;
+ c.samples_since_off = 0;
+ // VCF Contour ăȘă»ăă
+ self.vcf_samples_on = 0;
+ self.vcf_last_note_id = note;
+ }
+ }
+ NoteEvent::NoteOff { note, .. } => {
+ if let Some(c) = self.chips.iter_mut().find(|c| c.note == note) {
+ if c.gate {
+ c.gate = false;
+ c.samples_since_off = 0;
+ c.release_start_level = c.get_envelope(&self.params.amp, sr);
+ }
+ }
+ }
+ _ => (),
+ }
+ next_event = context.next_event();
+ }
+ self.fm_phase += self.params.osc.fm_rate.value() / sr;
+ if self.fm_phase >= 1.0 {
+ self.fm_phase -= 1.0;
+ }
+ let fm_lfo = (self.fm_phase * 2.0 * std::f32::consts::PI).sin();
+ self.pwm_phase += self.params.osc.pwm_rate.value() / sr;
+ if self.pwm_phase >= 1.0 {
+ self.pwm_phase -= 1.0;
+ }
+ let pwm_lfo = (self.pwm_phase * 2.0 * std::f32::consts::PI).sin();
+
+ let tune = self.params.mixer.master_tune.value()
+ + fm_lfo * self.params.osc.fm_amt.value() * 50.0;
+ let mut freqs_a = [0.0f32; 12];
+ let mut freqs_b = [0.0f32; 12];
+ for i in 0..12 {
+ let base = util::midi_note_to_freq(108 + i as u8);
+ freqs_a[i] = base * 2.0f32.powf(tune / 1200.0);
+ freqs_b[i] = freqs_a[i] * 2.0f32.powf(self.params.osc.rank_b_beat.value() / 1200.0);
+ }
+ self.tog_a.process(sr, &freqs_a);
+ self.tog_b.process(sr, &freqs_b);
+
+ let mut mixed = 0.0;
+ for c in &mut self.chips {
+ mixed += c.process(
+ self.tog_a.phases[c.tog_index],
+ self.tog_a.wrap_counts[c.tog_index],
+ self.tog_b.phases[c.tog_index],
+ self.tog_b.wrap_counts[c.tog_index],
+ &self.params,
+ sr,
+ pwm_lfo,
+ );
+ }
+
+ // Resonator Path
+ let mut res_out = 0.0;
+ if self.params.res.enabled.value() {
+ let mode = self.params.res.mode.value();
+ res_out = self.res_low.process(
+ mixed,
+ mode,
+ self.params.res.low_cf.value(),
+ self.params.res.low_emph.value(),
+ sr,
+ ) * self.params.res.low_gain.value()
+ + self.res_mid.process(
+ mixed,
+ mode,
+ self.params.res.mid_cf.value(),
+ self.params.res.mid_emph.value(),
+ sr,
+ ) * self.params.res.mid_gain.value()
+ + self.res_high.process(
+ mixed,
+ mode,
+ self.params.res.high_cf.value(),
+ self.params.res.high_emph.value(),
+ sr,
+ ) * self.params.res.high_gain.value();
+ }
+
+ // VCF Path
+ let mut vcf_out = 0.0;
+ if self.params.vcf.enabled.value() {
+ // VCF Envelope (Contour)
+ let t = self.vcf_samples_on as f32 / sr;
+ let v_a = self.params.vcf.attack.value();
+ let v_d = self.params.vcf.decay.value();
+ let v_s = self.params.vcf.sustain.value();
+ let v_env = if t < v_a {
+ t / v_a.max(0.0001)
+ } else {
+ 1.0 - ((t - v_a) / v_d.max(0.0001)).clamp(0.0, 1.0) * (1.0 - v_s)
+ };
+
+ // Cutoff calculation with Envelope and Keyboard Tracking
+ let kb_offset =
+ (self.vcf_last_note_id as f32 - 60.0) / 12.0 * self.params.vcf.kb_track.value();
+ let cutoff = self.params.vcf.cutoff.value()
+ * 2.0f32.powf(kb_offset + v_env * self.params.vcf.env_amt.value() * 4.0);
+
+ vcf_out = self.vcf.process(
+ mixed,
+ cutoff.clamp(20.0, 20000.0),
+ self.params.vcf.emphasis.value(),
+ sr,
+ );
+ self.vcf_samples_on = self.vcf_samples_on.wrapping_add(1);
+ }
+
+ let direct = mixed * self.params.mixer.direct.value();
+ let res_path = res_out * self.params.mixer.resonator.value();
+ let vcf_path = vcf_out * self.params.mixer.vcf.value();
+
+ let output = (direct + res_path + vcf_path) * 0.02 * self.params.gain.value();
for sample in channel_samples {
- *sample *= gain;
+ *sample = output;
}
}
-
ProcessStatus::Normal
}
+ fn reset(&mut self) {}
}
impl ClapPlugin for Molyxide {
const CLAP_ID: &'static str = "net.minervajuppiter.Molyxide";
- const CLAP_DESCRIPTION: Option<&'static str> = Some("Simple Polyphonic Synthesizer");
+ const CLAP_DESCRIPTION: Option<&'static str> = Some("A Simple Polyphonic Synthesizer");
const CLAP_MANUAL_URL: Option<&'static str> = Some(Self::URL);
const CLAP_SUPPORT_URL: Option<&'static str> = None;
-
- // Don't forget to change these features
- const CLAP_FEATURES: &'static [ClapFeature] = &[ClapFeature::AudioEffect, ClapFeature::Stereo];
-}
-
-impl Vst3Plugin for Molyxide {
- const VST3_CLASS_ID: [u8; 16] = *b"Exactly16Chars!!";
-
- // And also don't forget to change these categories
- const VST3_SUBCATEGORIES: &'static [Vst3SubCategory] =
- &[Vst3SubCategory::Fx, Vst3SubCategory::Dynamics];
+ const CLAP_FEATURES: &'static [ClapFeature] = &[ClapFeature::Synthesizer, ClapFeature::Stereo];
}
nih_export_clap!(Molyxide);
-nih_export_vst3!(Molyxide);
