Dylan M. Taylor 351b9d3a55 Tempo map: binary-search tempo segments in tick/sample conversions (#1297) ...

* Tempo map: index tempo segments so tick/sample conversions are O(log n)

Every tick<->sample conversion walked all earlier tempo changes, so code
that converts many positions (MIDI import/export, the tempo ruler, score
layout, MIDI scheduling and controller chasing on the audio thread)
cost positions x tempo changes. A session or MIDI file with many tempo
changes and many notes or tracks could stall the engine or the audio
callback.

TempoMap now keeps the elapsed time at each tempo change (rebuilt on
every edit and on deserialize, never serialized) and binary-searches
the segment. MIDI scheduling also skips notes whose on and off both
fall outside the block before converting them.

* Tempo map: index a file's ticks with saturating subtraction

2026-11-03 06:18:44 -05:00

..

src

Tempo map: binary-search tempo segments in tick/sample conversions (#1297)

2026-11-03 06:18:44 -05:00

tests/it

CI: one test binary per crate, nextest, line tables only (#985)

2026-10-23 14:00:38 -04:00

Cargo.toml

Foundation: time, audio-io, midi, dsp, model, mix, engine, playback crates

2026-10-05 22:27:29 -04:00