The lib unit tests had gone stale (time values became newtypes) and no longer
compiled. Updated the test code to the current API and fixed the few real issues
the now-running tests surfaced.
Test-only:
- Wrap raw f64 time literals in Beats(...) where the API now takes Beats
(automation.rs); pass &TempoMap / Beats where signatures changed (clip.rs,
effect_layer.rs).
- shape.rs: assert the documented no-fill default (fill_color None) instead of Some.
- add_clip_instance / trim_clip_instances tests: register a vector clip with the
test's clip_id so the action's get_clip_duration lookup succeeds.
Production fix (delete_folder.rs):
- DeleteFolderAction(MoveToParent) reparented child subfolders to the deleted
folder's parent but never restored them on undo, orphaning them. Track the moved
subfolder ids and restore their parent on rollback.
Result: daw-backend lib 17 passed; lightningbeam-core lib 264 passed.
Surround → stereo downmix:
- render_from_file folds multichannel sources (5.1/7.1/…) down to stereo with
proper coefficients (full level for the matching front channel, 1/√2 for centre
+ each surround, LFE dropped), normalized per row to avoid clipping (matching
ffmpeg's default). Applied uniformly to both the direct-copy and sinc-resample
paths and to every storage type (PCM, compressed, video audio), only when
dst==2 && src>2; unknown layouts fall back to front L/R. Previously it just took
FL/FR, dropping centre dialog + surrounds.
Proper video-audio reload:
- A video's audio track is now stored as a path reference to the video (never
packed/embedded as audio media) and re-probed via FFmpeg on load into a
streaming VideoAudio entry, so multichannel audio survives reload (the old
Symphonia reconstitution collapsed it, breaking the downmix). Driven by a new
AudioPoolEntry.is_video_audio flag across serialize / save_beam / load. Also
removes the decode-whole-video-to-RAM + temp-file path on load.
Fix video scaling:
- Any video with dimensions larger than the stage was being scaled down into the corner incorrectly; we now bake the frame-clip scale into the instance transform.
- VideoManager.frame_cache: unbounded HashMap (grew per distinct frame during
playback) -> LruCache evicted by a 256MB byte budget. Byte-budget rather than
frame count is robust across resolutions (a 4K frame is ~33MB vs ~2MB at
800x600). unload_video pops per-clip keys (LruCache has no retain).
- mux_video_and_audio: stream-merge the two inputs by PTS with one pending
packet per stream (O(1) memory) instead of collecting every packet into Vecs
first (O(duration)). Output is byte-identical.
- export AAC: sanitize the planar-f32 path (non-finite -> 0, finite clamped to
[-1,1]) like the integer paths, with a one-time warning. A stray NaN/Inf
render sample no longer fails the whole export.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Migrate the .beam container to SQLite and stream media from it instead of
decoding whole files into RAM on import/load.
Container & large files:
- SQLite .beam container (beam_archive) with in-place transactional saves and an
incremental BlobReader; supports both packed (chunked blobs) and referenced
(external path) media, with a user preference + first-import prompt for files
over the large-media threshold.
Audio streaming:
- Stream packed compressed audio on load via an inversion-of-control blob factory
(AudioBlobSourceFactory): daw-backend defines the trait, core implements it
over BlobReader, so the audio engine stays container-agnostic.
- Bulk-activate disk streaming for all loaded clips after SetProject.
- Sample-accurate compressed seek (SeekMode::Accurate; Coarse mislands on VBR).
Video:
- Video frames decoded/streamed on demand; thumbnails generated asynchronously
on a dedicated decoder so import/load never blocks the UI.
- The video's audio track is streamed on demand via an ffmpeg VideoAudioReader
as a separate editable AudioClip (no /tmp WAV extraction).
Waveform overview:
- Streaming min/max LOD pyramid (waveform_pyramid), bounded memory, configurable
floor B; serialized into the container and restored on load (or generated in
the background from the packed blob when absent), so no re-decode on reload.
- GPU min/max upload path; integer-LOD textureLoad fixes zoom-dependent wobble.
Skyler Lehmkuhl