[Feature Request] Enable 'willReadFrequently' on html5 canvas

Is your feature request related to a problem? Please describe. Scanning performance can possibly be improved by providing a hint to the web browser about intended usage

Describe the solution you’d like See this spec

// Javascript example
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d', {willReadFrequently: true});

this would (probably) apply to https://github.com/mebjas/html5-qrcode/blob/master/third_party/zxing-js.umd.js

Originally developed for games, but high frequency fps scans could also benefit from this

Describe alternatives you’ve considered It’s a trivial performance enhancement

Additional context

[mebjas]

Added in v2.3.1 (in prod)

[mebjas]

Thanks for the pointer @jbemmel and thanks for the insights @ROBERT-MCDOWELL

It’d be great to investigate the performance with and without this before using this. Keeping this issue open if someone is interested in the research.