- Pointing-hand cursor when hovering a clickable keyframe diamond.
- Prefetch (Phase 3e, playback only): each update during playback, page in the next
few upcoming keyframes (PREFETCH_AHEAD=4) per raster layer that aren't resident, via
the existing async worker. Their full pixels land before the playhead reaches them,
so playback shows full frames instead of the low-res proxy on every frame (the
proxy→full pop was the "flicker"). Reactive faults still cover scrubbing.
Make raster layers behave like vector on the timeline.
- Timeline: draw a diamond per `RasterKeyframe` (mirrors the vector keyframe block).
- New Keyframe (K / menu): on a raster layer, insert a BLANK cel at the playhead via
a new undoable `AddRasterKeyframeAction` (+ `RasterLayer::insert_blank_keyframe_at`
/ `remove_keyframe`). Vector path unchanged.
- Stop lazy creation: paint tools now edit the ACTIVE keyframe (at-or-before the
playhead) instead of creating one. The brush captures the active keyframe's exact
time; `RasterStroke`/`RasterFillAction` resolve via `keyframe_at_mut` (error if
none); the tool-site `ensure_keyframe_at` blocks (brush/fill/bucket/wand/quick-
select/floating-lift) are removed — each read already bails when no keyframe exists.
New layers still seed a keyframe at the playhead, so there's normally one to paint
into; painting before the first keyframe is now a no-op (as intended).
Next: onion skinning.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
`RasterStrokeAction`/`RasterFillAction` stored the whole before+after RGBA frame
(~16 MB/action at 1080p → up to ~1.6 GB at the 100-action cap). They now store a
`RasterDiff` — only the changed bounding box's pixels before and after — computed
once in `new()` from the full buffers, which are then dropped. A brush dab shrinks
from ~16 MB to tens of KB; a full-canvas fill is unchanged (its bbox is the frame).
Paging interaction: a diff overwrites just the bbox, so the keyframe's pixels must
be resident when undo/redo applies. A clean evicted frame's container bytes equal
its current logical state, so the editor faults the target frame in (synchronously)
before undo/redo via a new `Action::raster_resident_hint` + `peek_undo/redo_raster_hint`.
Dirty frames are never evicted, so they're already resident. If a base is somehow
not resident the apply is skipped (logged), never resized-and-corrupted.
Unit tests cover exact before/after round-trip, blank-first-stroke, no-op, and the
non-resident-base skip.
Scrubbing a large paint project no longer accumulates every visited frame in RAM.
A fault-in-recency LRU keeps the most-recently-paged-in RASTER_RESIDENT_MAX (12)
keyframes resident and drops the pixels of older *clean* ones (re-arming their
fault-in so they re-page on revisit). The shown frame is always the most-recent
fault-in, so it's never evicted.
Data-loss safety: a new `dirty` flag marks any keyframe whose `raw_pixels` were
mutated by editing (stroke/fill/paint-bucket/floating-lift + their undo/redo) and
is NOT yet in the container. Dirty keyframes are NEVER evicted — they're only
unpinned from the LRU. The flag is cleared on a successful save, which also re-arms
the LRU for the now-clean resident frames so the bound still applies to frames
edited this session.
Also: the save loop now walks all layers (incl. nested) to match the load path's
recursive fault-in arming — evicted frames keep their existing container row
(media_exists), and nested raster keyframes are persisted + covered by live_media.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The fault-in drain no longer decodes on the UI thread. It now:
- dispatches each newly-requested keyframe's page-in to a background thread
(deduped via an in-flight set, store cloned per request so path changes are
picked up), and
- applies completed results from a channel at the top of update(), keeping the UI
ticking while loads are outstanding.
Cold scrubs no longer freeze. The brief blank gap before a frame lands is removed
by the image proxy (3a-3); eviction to bound RAM while scrubbing is 3b.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Raster keyframes are no longer eagerly decoded at load — `raw_pixels` stays empty
and is paged in on demand from the project container, so a big paint project opens
instantly and only touched frames hit RAM.
- core: `read_packed_media_readonly` (fresh read-only connection, can't conflict
with an in-place save) + `RasterStore` (holds the container path; `load_pixels`
reads+decodes a keyframe's PNG by id). `load_beam_sqlite` stops eager-decoding and
instead marks every raster keyframe `needs_fault_in` (recursively, incl. nested);
a freshly-created keyframe stays false (blank-resident, nothing to page). Added
`Document::all_layers_mut`.
- editor: the canvas records a fault-in request when it needs a paged-out keyframe
(empty pixels && needs_fault_in); the App drains the sink at the top of update(),
pages the pixels in via the store, clears the flag, and repaints. Store path is set
on load and after save. Export faults in synchronously per frame.
Cold-scrub still shows a 1-frame gap and the page-in is synchronous; the image proxy
(3a-2) and async load (3a-3) remove those next.
Thumbnail rendering fixes:
- Strip now tiles from each clip's true (unclamped) origin and draws only the
tiles intersecting the visible rect, so it scrolls correctly and shows the
right frames when a clip is scrolled partly off the left. Both render sites
(collapsed group + expanded track) share one draw_video_thumbnail_strip helper.
- On-clip strip no longer freezes on the first thumbnail: get_thumbnail_at now
returns the actual thumbnail timestamp and the GPU texture cache keys on it, so
tiles refresh as closer thumbnails finish generating.
- Hover preview derives content time from the clip's true origin too (matches the
strip when scrolled off-screen).
- insert_thumbnail keeps the cache sorted + deduped (fixes a latent unsorted
binary_search bug, and makes concurrent restore + resume race-safe).
Thumbnail persistence (mirrors waveform persistence):
- MediaKind::Thumbnail rows, keyed by thumbnail_media_id(clip_id) (clip id XOR a
sentinel). Each clip's thumbnails PNG-encoded into one opaque LBTN blob (editor
owns the format), snapshotted cheaply (Arc clones) and encoded off the UI thread.
- Save writes the packs (kept in place on re-save); load reads them into
LoadedProject.thumbnail_blobs; the editor decodes + inserts them on a background
thread, so reload shows thumbnails instantly with no re-decode (even if the
source video file is missing).
- Partial sets are persisted with a complete flag and RESUMED on load:
generate_keyframe_thumbnails takes a should_skip predicate so a save made
mid-generation continues from where it left off instead of redoing the work.
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.
- Scale the document to the selected output resolution. It was rendered
at document size regardless of the export dimensions, so picking a
different resolution didn't scale the stage.
- Run the audio+video mux on a background thread instead of the UI
thread, keeping the app responsive (showing "Finalizing") during the
re-mux pass.
- Send desktop notifications fire-and-forget. notify_rust's show() is a
synchronous D-Bus call that blocked the UI for the full service
activation timeout (~25s) when no notification daemon is running.
Skyler Lehmkuhl