A session was parsed into a serde_json Value and then converted, which takes
many times the file's size in memory, and nothing limited how big a session
file could be.
Session::from_json now reads only format_version first (every other field is
skipped) and then parses the text straight into the session. A missing
format_version and a newer version give the errors they gave before. Other
type errors now end with the place they were found ("at line L column C").
A field of the document given twice in one object, which used to load with
the last value winning, is now refused with "duplicate field `key`" (a
twice-given format_version too, not "missing format_version"): keeping the
old leniency would need the tree this change removes, and no writer repeats
a field. Keys of maps (plugin params, edit values and the like) and unknown
keys still keep the last value given, as before.
A track's height was read through an untagged enum, which buffers the whole
value before it looks at it; a huge array there took about 27 times its size.
It now has its own reader that takes exactly the forms that loaded before
("Micro" to "Extreme", also as {"Micro": null}, {"Custom": n}, {"Fit": n},
and the old bare "Fit" or {"Fit": null}) and refuses anything else at its
first token.
Opening a session (a .scraft file, the browser's bytes, the session in a
bundle) and Import Session Data refuse one over 256 MiB by its size, before
reading it. Save, Save Copy In, Save As Template, autosave and the browser's
bundle refuse to write a session over that size, so SoundCraft never saves
one it then won't open. Save and autosave check before they write any audio,
so a refused save leaves nothing behind and a refused autosave keeps the last
one and its audio copies as they were; the refusal is reported like any
other autosave failure. Save checks against the longest name each new audio
file can get, so it may refuse a session within a few bytes per new file of
the limit. Crash recovery reads only the name of a leftover autosave, and
none from one over the cap. Audio files are read without that cap, as
before.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Converting clip gain to volume (and baking volume into clip gain)
evaluated the clip's gain envelope by walking it from the start for
every breakpoint being converted, so a large envelope in an opened or
imported session cost envelope points squared and blocked the engine.
Build a running-maximum index over the envelope once per clip and
binary-search it. It returns exactly what the walk returned, including
for envelopes stored out of order.
Bundle entries are stored, so the files read out of one can only
outgrow the bundle when several entries point at the same bytes. A
small bundle naming one payload thousands of times was copied out once
per name, up to the 1 GiB total limit, in the browser. Check the
archive for overlapping entry data before reading any entry.
Its help said `<plugin id>`, but it only runs built-in plugins, and a
hosted id (clap:, vst3:, au:) failed as "unknown process". The help now
says built-in plugin id, and a hosted id gets an error saying AudioSuite
runs built-in plugins only.
Fixes#1301.
Bounces passed no bwf to the encoder, so mix and stem WAVs had no bext
chunk and post tools placed them at zero. Bounce::new now stamps them
with TimeReference = the session's timecode start plus the bounce start,
in samples since midnight, as other DAWs do. A caller's own bwf wins;
AIFF and FLAC have no bext and are unchanged.
Fixes#1296.
Found while testing crates/engine/src/score.rs:~150 (measure_grid, `if ub <= ua { break; }`), used by layout()
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
With start now optional, {end} alone resolves the start from the
selection; the empty-range fallback still went through event.tempo,
which put the tempo at tick 0. CodeRabbit flagged this.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Found while testing crates/engine/src/cmd.rs:326-336 (range_param), used by crates/engine/src/cmd/event.rs:148 (insert_time) and :172 (cut_time)
Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Collapse consecutive duplicate SMF tempos only if the session tempo at
the event tick already matches, so existing session tempo markers are
overridden as expected.
import_midi_bytes capped meter changes at MAX_MIDI_METERS (10,000), but
left imported tempo events and synth tracks unbounded. Dense MIDI files
inserted unlimited tempo markers into the session tempo map, degrading
linear tick-to-sample conversions across playback and audio processing,
and instantiated up to 4,096 synth tracks for controller-only tracks.
Add MAX_MIDI_TEMPOS (10,000) and MAX_MIDI_TRACKS (512) caps checked
before session mutation, and collapse consecutive equal tempo events.
main split crates/mix/src/lib.rs: the clip-FX gain clamp now lives in
clips.rs and the send-level automation clamp in automation.rs (via
crate::SEND_LEVEL_MAX_DB). Adds tests for the send-automation clamp and
the load-time sanitize clamp (#884).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
SlyLaM
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Dylan M. Taylor
Brandon Thomas
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NetterSilverandClaude Haiku 5.5
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ydking0911
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