110 lines
2.5 KiB
Rust
110 lines
2.5 KiB
Rust
use crate::audio::node_graph::{AudioNode, NodeCategory, NodePort, Parameter, SignalType};
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use crate::audio::midi::MidiEvent;
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/// Audio to CV converter
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/// Directly converts a stereo audio signal to mono CV (averages L+R channels)
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pub struct AudioToCVNode {
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name: String,
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inputs: Vec<NodePort>,
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outputs: Vec<NodePort>,
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parameters: Vec<Parameter>,
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}
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impl AudioToCVNode {
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pub fn new(name: impl Into<String>) -> Self {
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let name = name.into();
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let inputs = vec![
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NodePort::new("Audio In", SignalType::Audio, 0),
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];
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let outputs = vec![
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NodePort::new("CV Out", SignalType::CV, 0),
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];
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Self {
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name,
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inputs,
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outputs,
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parameters: Vec::new(),
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}
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}
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}
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impl AudioNode for AudioToCVNode {
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fn category(&self) -> NodeCategory {
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NodeCategory::Utility
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}
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fn inputs(&self) -> &[NodePort] {
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&self.inputs
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}
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fn outputs(&self) -> &[NodePort] {
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&self.outputs
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}
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fn parameters(&self) -> &[Parameter] {
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&self.parameters
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}
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fn set_parameter(&mut self, _id: u32, _value: f32) {}
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fn get_parameter(&self, _id: u32) -> f32 {
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0.0
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}
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fn process(
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&mut self,
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inputs: &[&[f32]],
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outputs: &mut [&mut [f32]],
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_midi_inputs: &[&[MidiEvent]],
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_midi_outputs: &mut [&mut Vec<MidiEvent>],
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_sample_rate: u32,
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) {
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if inputs.is_empty() || outputs.is_empty() {
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return;
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}
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let input = inputs[0];
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let output = &mut outputs[0];
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// Audio input is stereo (interleaved L/R), CV output is mono
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let audio_frames = input.len() / 2;
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let frames = audio_frames.min(output.len());
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for frame in 0..frames {
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let left = input[frame * 2];
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let right = input[frame * 2 + 1];
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output[frame] = (left + right) * 0.5;
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}
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}
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fn reset(&mut self) {}
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fn node_type(&self) -> &str {
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"AudioToCV"
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}
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fn name(&self) -> &str {
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&self.name
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}
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fn clone_node(&self) -> Box<dyn AudioNode> {
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Box::new(Self {
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name: self.name.clone(),
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inputs: self.inputs.clone(),
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outputs: self.outputs.clone(),
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parameters: self.parameters.clone(),
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})
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}
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fn as_any_mut(&mut self) -> &mut dyn std::any::Any {
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self
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}
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fn as_any(&self) -> &dyn std::any::Any {
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self
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}
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}
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