[TIKA-3991] Improve file detection for canon-raw (crw), cr2 and cr3

• Type: Task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.8.0
• Assignee: Unassigned
• Reporter: Tim Allison
• Created: 22/Mar/23 14:25
• Updated: 10/May/23 15:48
• Resolved: 31/Mar/23 18:10

Description

There are three file formats here under "canon raw":

crw – ciff based
cr2 – tiff based
cr3 – mpeg based

We need to figure out what mimes we want to use for each of these and add byte-level detection for them.

There's some complexity in that we'd like them all to subtype canon raw (I think?), but the cr2 and cr3 are based on completely different file formats.

Some references:

https://exiftool.org/canon_raw.html
http://fileformats.archiveteam.org/wiki/CR2
https://github.com/lclevy/canon_cr3

Issue Links

• links to: GitHub Pull Request #1033