DNG compression 34892: each tile / strip is a baseline JPEG of 8-bit samples (decoded with
zune-jpeg, pure Rust), then the usual linearization table, levels and crop apply. Per the DNG
specification. Lossy DNGs (Smart Previews, "lossy compression" DNG exports, many phone DNGs)
now open as raw files instead of falling back to their embedded preview. Unit test with
synthetic JPEG tiles (edge tile cut short); the corpus sample decodes (5760×3840 in 144 ms).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Brandon ThomasandClaude Opus 5.5
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