nvrl
d93dd942a8
Ballast gives every part of a bassline one gain that brings it to the target loudness, with no compression inside a part. Parts start at note starts, detected from the audio or taken from MIDI, or on the host's beat grid, so a patch change on the same note counts too. - Loudness is K-weighted over each part's first 100 ms, in 10 ms blocks with a relative gate, and every part is weighted from rest so the last part does not ring into it. - The audio path is delayed by the tracker's lookahead, the window and a 5 ms glide, so each gain is in place on its part's first sample. - Learn takes the next part's loudness as the target. Amount, Range, Measure from (leave the sub out), Gate, Output, Bypass. - Editor shows the last 32 parts in and out, the target, and the spread of the last 16 parts. - Registered in the catalog, workflows, editor-check, README, chain and development docs, and the website copy.
87 lines
2.7 KiB
Rust
87 lines
2.7 KiB
Rust
use ballast_core::{Engine, Grid, Segment, Settings, Source};
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use std::{
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alloc::{GlobalAlloc, Layout, System},
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cell::Cell,
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};
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struct CheckedAllocator;
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thread_local! {
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static CHECK:Cell<bool>=const {Cell::new(false)};
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static OPERATIONS:Cell<usize>=const {Cell::new(0)};
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}
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fn record() {
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if CHECK.try_with(Cell::get).unwrap_or(false) {
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let _ = OPERATIONS.try_with(|n| n.set(n.get() + 1));
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}
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}
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unsafe impl GlobalAlloc for CheckedAllocator {
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unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
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record();
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unsafe { System.alloc(layout) }
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}
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unsafe fn dealloc(&self, pointer: *mut u8, layout: Layout) {
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record();
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unsafe { System.dealloc(pointer, layout) }
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}
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unsafe fn realloc(&self, pointer: *mut u8, layout: Layout, size: usize) -> *mut u8 {
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record();
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unsafe { System.realloc(pointer, layout, size) }
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}
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}
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#[global_allocator]
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static ALLOCATOR: CheckedAllocator = CheckedAllocator;
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#[test]
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fn processing_notes_settings_transport_and_analysis_do_not_allocate_or_free() {
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let mut engine = Engine::new(48000., 2).unwrap();
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let mut settings = Settings::default();
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engine.set_settings(settings).unwrap();
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CHECK.with(|v| v.set(true));
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for i in 0..96000 {
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if i % 512 == 0 {
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let playing = (i / 24000) % 2 == 0;
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engine.set_transport(
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Some(140.),
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playing.then_some(i as f64 / 48000. * 140. / 60.),
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);
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}
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if i % 4800 == 0 {
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let step = i / 4800;
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settings.segment = if step % 2 == 0 {
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Segment::Grid
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} else {
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Segment::Notes
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};
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settings.grid = Grid::ALL[step % Grid::ALL.len()];
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settings.source = if step % 4 < 2 {
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Source::Audio
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} else {
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Source::Midi
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};
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settings.from = 20. + 30. * (step % 5) as f32;
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settings.bypass = step % 7 == 6;
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engine.set_settings(settings).unwrap();
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engine.note_on(33 + (step % 12) as u8);
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if step % 3 == 0 {
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engine.learn();
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}
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}
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if i % 4800 == 2400 {
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engine.note_off(33 + (i / 4800 % 12) as u8);
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}
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let t = i as f32 / 48000.;
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let x = if (i / 2400) % 2 == 0 {
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(std::f32::consts::TAU * 55. * t).sin() * 0.5
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} else {
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0.
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};
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std::hint::black_box(engine.process_sample([x, -x]));
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if i % 1600 == 0 {
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std::hint::black_box(engine.take_analyzer());
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}
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}
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engine.reset();
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CHECK.with(|v| v.set(false));
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assert_eq!(OPERATIONS.with(Cell::get), 0);
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}
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