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LR-HDR-EXPORT: HDR AVIF (10-bit Rec. 2020 PQ)

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`encode_avif_pq`: linear Rec. 2020 with SDR white at 1.0 → PQ (SDR white at
203 cd/m², BT.2408), BT.2020 NCL YCbCr 4:4:4, 10-bit, with CICP nclx
(9/16/9, full range) and a clli box. ravif fixes the sRGB curve, so this
drives the rav1e + avif-serialize it already uses (no new crates).

Export: AVIF with `hdr` renders the HDR edit in Rec. 2020 and writes PQ.
Photos without an HDR edit export as before, in every format. CoreImage
decodes the file as HDR (same 3.1 % of the frame above SDR white as the gain
map JPEG of the same edit).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
akvaithi
2026-10-09 22:40:37 -05:00
co-authored by Claude Opus 5.5
parent af06f2dbc1
commit 7828f93c32
12 changed files with 203 additions and 23 deletions
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README.md
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@@ -309,7 +309,7 @@ LightCraft is young and moving fast. **Where we honestly stand** (details in the
| Detail: sharpening, luminance + colour noise reduction | ✅ · AI Denoise, Super Resolution ⬜ |
| Remove / Heal / Clone spots (auto source), Visualize Spots, Red Eye and Pet Eye (auto pupil detection, catchlight) | ✅ · content-aware fill, spot pin editing 🚧 |
| Export: JPEG / PNG / TIFF / WebP / AVIF / DNG / original, sizing, file-size limit, output sharpening, naming templates, batch, metadata policy, text or image watermark | ✅ |
| HDR: HDR editing with a headroom limit, SDR rendition, Visualize HDR; export as ISO 21496-1 gain map JPEG or 32-bit float TIFF | ✅ · HDR display, AVIF HDR ⬜ |
| HDR: HDR editing with a headroom limit, SDR rendition, Visualize HDR; export as ISO 21496-1 gain map JPEG, PQ AVIF or 32-bit float TIFF | ✅ · HDR display ⬜ |
| Library persistence (crash-safe op log + snapshots, background compaction, failed saves reported), disk thumbnail cache | ✅ |
| Import: Add in place / Copy / Move, rename and folder templates, devices, duplicate detection, watched folders; Local folder browsing | ✅ |
| MCP server (headless or live app, persistent libraries), CLI, control channel | ✅ |