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#1407: import Radiance HDR stills and image sequences

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Problem: Premiere reads Radiance HDR (.hdr) pictures; FilmCraft listed
the extension nowhere and could not open them.

Fix: clean-room RGBE decoder in filmcraft-media from the public format
description: header with FORMAT, all eight axis orders, flat, old
run-length and new per-channel run-length scan lines. Frames are linear
float (Rec.709), like EXR. Allocations are bounded by the data present;
hostile headers and truncated data return errors. "hdr" joins the
importable still extensions; stills and image sequences share the decoder.
Output equals ffmpeg's decode exactly for flat and RLE files; EXPOSURE and
PRIMARIES lines are ignored and XYZE is refused.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
This commit is contained in:
vangel76
2026-10-12 21:12:44 +02:00
co-authored by Claude Sonnet 5.5
parent 71438c627b
commit 595f94f303
8 changed files with 476 additions and 6 deletions
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docs/file-format-parity.md
+2 -1
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@@ -59,7 +59,8 @@ only). "Tested" names the evidence.
| **DPX** | read + write | yes: luma / RGB / RGBA, 8–16-bit, filled 10/12-bit, either byte order (#821); packed 10/12-bit, Y'CbCr 4:2:2 / 4:4:4 with or without alpha (#841); no RLE | sequences (10-bit RGB, BT.709; #779) | 90% |
| Targa | read + write | yes: every image type, RLE, colour maps, 15–32-bit (#821) | sequences (24-bit, 32-bit with alpha; #779) | 95% |
| HEIF / HEIC | read | no | — | 0% |
| Radiance HDR, AI / EPS, ICO, PTL | read | no | — | 0% |
| **Radiance HDR** | read | yes: RGBE, flat, old and new run-length scan lines, every axis order, kept as linear float (#1407); no XYZE, EXPOSURE / PRIMARIES lines ignored | — | 70% |
| AI / EPS, ICO, PTL | read | no | — | 0% |
## Audio files