dfpworm start

Cargo.lock

@@ -152,15 +152,6 @@ version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
 
-[[package]]
-name = "assert_no_alloc"
-version = "1.1.2"
-source = "git+https://github.com/robbert-vdh/rust-assert-no-alloc.git?branch=feature%2Fnested-permit-forbid#a6fb4f62b9624715291e320ea5f0f70e73b035cf"
-dependencies = [
- "backtrace",
- "log",
-]
-
 [[package]]
 name = "async-broadcast"
 version = "0.5.1"
@@ -1823,7 +1814,6 @@ source = "git+https://github.com/robbert-vdh/nih-plug.git#28b149ec4d62757d0b4488
 dependencies = [
  "anyhow",
  "anymap3",
- "assert_no_alloc",
  "atomic_float 0.1.0",
  "atomic_refcell",
  "backtrace",

Cargo.toml

@@ -5,3 +5,12 @@ members = [
   "plugins/dfpworm",
   "plugins/gain",
 ]
+
+[profile.release]
+lto = "thin"
+strip = "symbols"
+
+[profile.profiling]
+inherits = "release"
+debug = true
+strip = "none"

plugins/dfpworm/Cargo.toml

@@ -8,5 +8,5 @@ crate-type = ["cdylib"]
 
 [dependencies]
 atomic_float = "1.1"
-nih_plug = { git = "https://github.com/robbert-vdh/nih-plug.git", version = "0.0.0", features = ["assert_process_allocs"] }
+nih_plug = { git = "https://github.com/robbert-vdh/nih-plug.git", version = "0.0.0" }
 nih_plug_vizia = { git = "https://github.com/robbert-vdh/nih-plug.git", version = "0.0.0" }

plugins/dfpworm/dfpwm-spec.md

@@ -0,0 +1,36 @@
+
+# Decoding
+```
+sample = 1.0 if predictor(bit) else -1.0`
+```
+
+# Encoding
+```
+if sample > last_predictor or (sample == last_predictor == 1.0):
+    bit = predictor(1)
+else:
+    bit = predictor(0)
+```
+
+# Predictor
+
+## State
+charge: f32 = 0.0
+strength: f32 = 1.0
+last_bit: bool = false
+
+## Parameters
+- strength_increase: f32 = 7.0 / 127.0
+- strength_decrease: f32 = 20.0 / 128.0
+
+## Procedure
+
+### Input comprehension
+```
+target: f32 = 1.0 if bit == true else -1.0
+```
+
+### Charge Adjustment
+```
+
+```

plugins/dfpworm/src/dfpwm.rs

@@ -0,0 +1,77 @@
+pub const DEFAULT_RESPONSE_INCREASE: f32 = 7.0 / 127.0;
+pub const DEFAULT_RESPONSE_DECREASE: f32 = 20.0 / 128.0;
+
+const NUDGE: f32 = 1.0 / 128.0;
+
+pub struct Context {
+    pub response_increase: f32,
+    pub response_decrease: f32,
+
+    level: f32,
+    response: f32,
+    last_bit: bool,
+}
+
+impl Context {
+    pub fn new() -> Self {
+        Self {
+            response_increase: DEFAULT_RESPONSE_INCREASE,
+            response_decrease: DEFAULT_RESPONSE_DECREASE,
+
+            level: 0.0,
+            response: NUDGE,
+            last_bit: false,
+        }
+    }
+
+    pub fn reset(self: &mut Self) {
+        self.level = 0.0;
+        self.response = NUDGE;
+        self.last_bit = false;
+    }
+
+    pub fn compress(self: &mut Self, sample: f32) -> bool {
+        let bit = sample > self.level || (sample == self.level && self.level == 1.0);
+        self.update(bit);
+        bit
+    }
+
+    pub fn decompress(self: &mut Self, bit: bool) -> f32 {
+        // let last_bit = self.last_bit;
+        self.update(bit);
+        self.level
+    }
+
+    fn update(self: &mut Self, current_bit: bool) {
+        // update level
+        let target: f32 = if current_bit { 1.0 } else { -1.0 };
+        let new_level = (self.level + (self.response * (target - self.level))).clamp(-1.0, 1.0);
+        if new_level == self.level && self.level != target {
+            if target < self.level {
+                self.level -= NUDGE;
+            } else {
+                self.level += NUDGE;
+            }
+        } else {
+            self.level = new_level;
+        }
+
+        // update response
+        let (response_target, response_delta) = if current_bit == self.last_bit {
+            (1.0f32, self.response_increase)
+        } else {
+            (0.0f32, self.response_decrease)
+        };
+        let new_response =
+            (self.response + (response_delta * (response_target - self.response))).clamp(-1.0, 1.0);
+        if new_response == self.response && self.response != response_target {
+            if response_target < self.response {
+                self.response -= NUDGE;
+            } else {
+                self.response += NUDGE;
+            }
+        } else {
+            self.response = new_response;
+        }
+    }
+}

plugins/dfpworm/src/lib.rs

@@ -1,14 +1,161 @@
-pub fn add(left: u64, right: u64) -> u64 {
-    left + right
+use std::sync::Arc;
+
+use nih_plug::prelude::*;
+
+mod dfpwm;
+
+pub struct Worm {
+    params: Arc<WormParams>,
+
+    compress_contexts: Vec<dfpwm::Context>,
+    decompress_contexts: Vec<dfpwm::Context>,
 }
 
-#[cfg(test)]
-mod tests {
-    use super::*;
+#[derive(Params)]
+struct WormParams {
+    #[id = "response-increase"]
+    response_increase: FloatParam,
+    #[id = "response-decrease"]
+    response_decrease: FloatParam,
+}
 
-    #[test]
-    fn it_works() {
-        let result = add(2, 2);
-        assert_eq!(result, 4);
+impl Default for Worm {
+    fn default() -> Self {
+        Self {
+            params: Arc::new(WormParams::default()),
+
+            compress_contexts: Vec::new(),
+            decompress_contexts: Vec::new(),
+        }
     }
 }
+
+impl Default for WormParams {
+    fn default() -> Self {
+        Self {
+            response_increase: FloatParam::new(
+                "Response Increase",
+                dfpwm::DEFAULT_RESPONSE_INCREASE,
+                FloatRange::Linear { min: 0.0, max: 1.0 },
+            ),
+
+            response_decrease: FloatParam::new(
+                "Response Decrease",
+                dfpwm::DEFAULT_RESPONSE_DECREASE,
+                FloatRange::Linear { min: 0.0, max: 1.0 },
+            ),
+        }
+    }
+}
+
+impl Plugin for Worm {
+    const NAME: &'static str = "Dirty Frying Pan Worm";
+
+    const VENDOR: &'static str = "fogwaves";
+
+    const URL: &'static str = "https://example.com";
+
+    const EMAIL: &'static str = "info@example.com";
+
+    const VERSION: &'static str = env!("CARGO_PKG_VERSION");
+
+    const AUDIO_IO_LAYOUTS: &'static [AudioIOLayout] = &[
+        AudioIOLayout {
+            main_input_channels: NonZeroU32::new(2),
+            main_output_channels: NonZeroU32::new(2),
+            ..AudioIOLayout::const_default()
+        },
+        AudioIOLayout {
+            main_input_channels: NonZeroU32::new(1),
+            main_output_channels: NonZeroU32::new(1),
+            ..AudioIOLayout::const_default()
+        },
+    ];
+
+    const SAMPLE_ACCURATE_AUTOMATION: bool = true;
+
+    type SysExMessage = ();
+
+    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>,
+    ) -> bool {
+        if let Some(n) = audio_io_layout.main_input_channels {
+            for _i in 0..n.into() {
+                self.compress_contexts.push(dfpwm::Context::new());
+                self.decompress_contexts.push(dfpwm::Context::new());
+            }
+        }
+
+        true
+    }
+
+    fn reset(&mut self) {
+        for ctx in self.compress_contexts.iter_mut() {
+            ctx.reset();
+        }
+        for ctx in self.decompress_contexts.iter_mut() {
+            ctx.reset();
+        }
+    }
+
+    fn deactivate(&mut self) {}
+
+    fn process(
+        &mut self,
+        buffer: &mut Buffer,
+        _aux: &mut AuxiliaryBuffers,
+        _context: &mut impl ProcessContext<Self>,
+    ) -> ProcessStatus {
+        for channel_samples in buffer.iter_samples() {
+            let response_increase = self.params.response_increase.smoothed.next();
+            let response_decrease = self.params.response_decrease.smoothed.next();
+
+            for (i, sample) in channel_samples.into_iter().enumerate() {
+                self.compress_contexts[i].response_increase = response_increase;
+                self.decompress_contexts[i].response_decrease = response_decrease;
+
+                let bit = self.compress_contexts[i].compress(*sample);
+                *sample = self.decompress_contexts[i].decompress(bit);
+            }
+        }
+
+        ProcessStatus::Normal
+    }
+}
+
+impl ClapPlugin for Worm {
+    const CLAP_ID: &'static str = "fogwaves.dfpworm";
+
+    const CLAP_DESCRIPTION: Option<&'static str> =
+        Some("Runs audio through the DFPWM 1-bit audio codec by Ben \"GreaseMonkey\" Russel.");
+
+    const CLAP_MANUAL_URL: Option<&'static str> = Some(Self::URL);
+
+    const CLAP_SUPPORT_URL: Option<&'static str> = None;
+
+    const CLAP_FEATURES: &'static [ClapFeature] = &[
+        ClapFeature::AudioEffect,
+        ClapFeature::Stereo,
+        ClapFeature::Mono,
+        ClapFeature::Distortion,
+    ];
+}
+
+impl Vst3Plugin for Worm {
+    const VST3_CLASS_ID: [u8; 16] = *b"FogwavesDFPWormC";
+
+    const VST3_SUBCATEGORIES: &'static [Vst3SubCategory] =
+        &[Vst3SubCategory::Fx, Vst3SubCategory::Distortion];
+}
+
+nih_export_clap!(Worm);
+nih_export_vst3!(Worm);

plugins/gain/Cargo.toml

@@ -8,5 +8,5 @@ crate-type = ["cdylib"]
 
 [dependencies]
 atomic_float = "1.1"
-nih_plug = { git = "https://github.com/robbert-vdh/nih-plug.git", version = "0.0.0", features = ["assert_process_allocs"] }
+nih_plug = { git = "https://github.com/robbert-vdh/nih-plug.git", version = "0.0.0" }
 nih_plug_vizia = { git = "https://github.com/robbert-vdh/nih-plug.git", version = "0.0.0" }