Feat: clean the codebase as much as possible

src/engine/audio.rs

@@ -1,14 +1,11 @@
-use cpal::traits::{DeviceTrait, StreamTrait};
-use cpal::Stream;
-use crossbeam_channel::Receiver;
-use doux::{Engine, EngineMetrics};
 use ringbuf::{traits::*, HeapRb};
 use rustfft::{num_complex::Complex, FftPlanner};
-use std::sync::atomic::{AtomicBool, AtomicU32, AtomicU64, Ordering};
+use std::sync::atomic::{AtomicBool, AtomicU32, Ordering};
 use std::sync::Arc;
 use std::thread::{self, JoinHandle};
 
-use super::AudioCommand;
+#[cfg(feature = "cli")]
+use std::sync::atomic::AtomicU64;
 
 pub struct ScopeBuffer {
     pub samples: [AtomicU32; 256],
@@ -230,6 +227,36 @@ fn analysis_loop(
     }
 }
 
+pub fn preload_sample_heads(
+    entries: Vec<(String, std::path::PathBuf)>,
+    target_sr: f32,
+    registry: &doux::SampleRegistry,
+) {
+    let mut batch = Vec::with_capacity(entries.len());
+    for (name, path) in &entries {
+        match doux::sampling::decode_sample_head(path, target_sr) {
+            Ok(data) => batch.push((name.clone(), Arc::new(data))),
+            Err(e) => eprintln!("preload {name}: {e}"),
+        }
+    }
+    if !batch.is_empty() {
+        registry.insert_batch(batch);
+    }
+}
+
+#[cfg(feature = "cli")]
+use cpal::traits::{DeviceTrait, StreamTrait};
+#[cfg(feature = "cli")]
+use cpal::Stream;
+#[cfg(feature = "cli")]
+use crossbeam_channel::Receiver;
+#[cfg(feature = "cli")]
+use doux::{Engine, EngineMetrics};
+
+#[cfg(feature = "cli")]
+use super::AudioCommand;
+
+#[cfg(feature = "cli")]
 pub struct AudioStreamConfig {
     pub output_device: Option<String>,
     pub channels: u16,
@@ -237,12 +264,14 @@ pub struct AudioStreamConfig {
     pub max_voices: usize,
 }
 
+#[cfg(feature = "cli")]
 pub struct AudioStreamInfo {
     pub sample_rate: f32,
     pub host_name: String,
     pub channels: u16,
 }
 
+#[cfg(feature = "cli")]
 pub fn build_stream(
     config: &AudioStreamConfig,
     audio_rx: Receiver<AudioCommand>,