selfcustody/krux

Increase UR memory efficiency

Opened this issue · 3 comments

Deleted user commented

Do some profiling on the urtypes library and the UR library from Foundation Devices to see how we can improve RAM usage

odudex commented

Did two things that reduced resources usage and increased speed a lot, without changing UR

  1. Used binary images (1 bit per pixel) instead os "01" strings (8 bits per pixel) to store and handle QR codes. b56a33f (and some subsequent commits)

  2. Inspecting both Krux and UR I figured out Krux would was calculating QR code sizes through iterations, starting with huge QR codes, and encoding them on each iteration. So I replaced the iterations by equations. de99bfe

Learned that UR not efficient on information density, and is terrible for small screens. But let's try to use it the best way possible.

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tadeubas commented

Can we consider this done in release 24.03.0 ?

odudex commented

Yes, done in Release v24.03.0