High-Throughput JPEG 2000 Codestream

import magic
print(magic.from_file('codestream.jhc', mime=True)) # May default to generic 'image/jp2' or 'application/octet-stream'

const FileType = require('file-type');
const type = await FileType.fromFile('codestream.jhc');
console.log(type?.mime); // Standard libraries may struggle to differentiate between a standard J2K codestream and an HTJ2K one

import "net/http"
// Custom codestream parsing is required to read the CAP marker indicating HTJ2K usage.

$mime = mime_content_type('codestream.jhc');
echo $mime; // Standard implementations often map this to application/octet-stream