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b38054b29c
* fix(artwork): convert decoded images to a fast-path type before resizing
x/image/draw's CatmullRom scaler only has optimized paths for *image.RGBA,
*image.NRGBA, *image.Gray and *image.YCbCr. Other concrete types — notably
*image.NYCbCrA (from WebP) and *image.Paletted (indexed PNGs) — fall back to
a generic per-pixel At()/RGBA() loop that is several times slower.
Convert such images to *image.RGBA once before scaling; fast-path types are
returned unchanged. This makes resize performance independent of which decoder
wins the image.Decode("webp") registration, and also speeds up indexed PNGs.
Signed-off-by: Deluan <deluan@navidrome.org>
* chore(deps): update gen2brain/webp to v0.6.0
v0.6.0 replaces the wazero WASM runtime with a self-contained
wasm2go-transpiled WebP decoder/encoder. This drops the webp -> wazero
dependency edge (wazero is still used by the plugin system) and makes the
WASM-only build path (32-bit / nodynamic) faster and far lighter on
allocations.
Signed-off-by: Deluan <deluan@navidrome.org>
* perf(artwork): defer fast-path conversion until a resize is needed
Move toFastScaleType to just before the CatmullRom.Scale call, after the
no-upscale early return. Previously the conversion ran right after decode, so a
request for a size >= the source dimensions would allocate and walk a full RGBA
copy only to discard it when resizeStaticImage returns nil. The resize path is
unchanged; the no-op path drops ~30-40% time and up to ~79% memory for large
indexed/WebP artwork.
Signed-off-by: Deluan <deluan@navidrome.org>
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Signed-off-by: Deluan <deluan@navidrome.org>