Since the SkiaSharp 3 update the MatrixConvolution image filter used in
SkiaEncoder.ResizeImage no longer has a fast CPU path: on the software
rasterizer it takes about 4.5 seconds per megapixel-sized image, which
turns every cold image request into a multi-second operation and makes
first-time loads of a library view take minutes.
Draw the resize without the paint filter and apply the identical 3x3
kernel (same weights, clamped edges, alpha included) directly on the
resized pixels instead. This drops a cold 1000x1500 -> 663x995 poster
render from ~4.6s to well under a second; the convolution pass itself
takes ~86ms. Output is visually unchanged.
GetFallbackFont() called .First() on the font file sequence, which throws
System.InvalidOperationException when no file matched the requested name,
causing HTTP 500. Change to .FirstOrDefault() so a missing font falls
through to the existing null guard and returns HTTP 200 OK (the empty
response is intentional to avoid breaking SubtitlesOctopus).
Fixes#17683.
Prepared with AI assistance (Claude Code, Anthropic), reviewed for correctness before submission.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
The legacy filter queries projected ItemValue before grouping tags and genres. EF Core translated that shape into duplicated correlated aggregates, causing multi-minute requests for libraries with many distinct values and blocking unrelated SQLite-backed API calls.
Join ItemValuesMap directly to ItemValues before grouping. This preserves type and item filtering, clean-value grouping, minimum-value selection and ordering while producing one aggregate query. Add an in-memory SQLite regression test for result semantics and both SQL shapes.
External VobSub subtitle pairs (.idx and .sub) were only probed via the
bare .sub file. In cases where multiple languages are present, this
results in missing language metadata.
Fix by detecting the matching .idx file during media info resolution
to run ffprobe on that file and skip processing the .sub entirely.
ffprobe will automatically find the matching (same directory,
case-sensitive base) .sub file and process both.
Added regression tests covering idx/sub pairing, unpaired files,
cross-directory pairs, and language-flagged filenames.
Fixes#17745
Cody Robibero