Problem: OpenEXR files with PXR24 compression (a common lossy 24-bit
float format from renderers and compositors) were refused with "not
supported yet".
Fix: decode PXR24 chunks (16 lines, deflated byte planes of per-line
sample differences; floats keep their top 24 bits) into the existing
scan-line pipeline. Bounds-checked, no panics on damaged data. Tests:
hand-built chunks with half/float/uint channels and a partial last
chunk, damaged-file cases, and an OpenImageIO-written oracle comparing
our decode with OpenEXR's own (skips without oiiotool). Docs updated;
stale AVI / FLAC-in-MP4 entries removed from G10.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Problem: FilmCraft exports OpenEXR sequences (#806) but could not open
.exr files at all, so EXR plates and renders from other apps could not
be imported (docs/gaps.md G10).
Fix: a clean-room OpenEXR reader in filmcraft-media (still/exr.rs) for
single-part scan-line files with no, RLE, ZIPS or ZIP compression and
half / float / uint channels, with our own zlib/DEFLATE decoder (no new
dependency). R, G, B, A (or luminance Y) become premultiplied linear
RGBA float frames, the compositor's working format, so values above 1.0
survive; the data window is placed in the display window. Stills open
through open_bytes, sequences through ImageSequenceSource; tiled, deep,
multi-part, subsampled and PIZ / PXR24 / B44 / DWA files are refused
with a clear error.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
vangel76