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Maurice Rogers
13a3eff2e8
CR3 files imported as preview-only with the 1620x1080 PRVW JPEG and no metadata (no camera, capture time, exposure, lens or GPS): nothing read the container. - crates/meta/src/cr3.rs: bounded ISO base media box parser for CR3 (Canon uuid box with CMT1-4 and THMB, tracks with their sample entries, CMP1 coding header and sample location, XMP uuid box). Every size/offset checked; depth and box count bounded. - Metadata: CMT1 (IFD0), CMT2 (Exif) and CMT4 (GPS) merged into one TIFF Exif block, so CR3 reads like any TIFF-based raw; XMP from its uuid box. - Preview: the full-size JPEG track (6960x4640 on an EOS R6 Mark III) before PRVW/THMB; imports report the full image size. - Tests: synthetic CR3 (boxes, tracks, merged Exif), truncation/corruption sweep, JPEG track preferred over PRVW with fallback. Raw (CRX) data is still not decoded; CR3 stays preview-only.