QR-Code

[Biterider]

Hi
Has anyone coded something to generate and read QR codes?
Is there an interface to an existing library that can be used in asm? 

Biterider

[jj2007]

https://github.com/nayuki/QR-Code-generator

https://www.nayuki.io/page/qr-code-generator-library#compared-to-competitors (half a dozen libraries described)

[jack]

some one posted the dll's and QT5 gui front  end for zint https://www.planetsquires.com/protect/forum/index.php?topic=4675.0

[jj2007]

some one posted the dll's and QT5 gui front  end for zint https://www.planetsquires.com/protect/forum/index.php?topic=4675.0

libzint.dll at 760kBytes. Ridiculously bloated for such a simple task

About 40 years ago I wrote a barcode generator in 68000 Assembly, but I've lost the source

[LiaoMi]

A fast and compact QR Code encoding library - https://github.com/fukuchi/libqrencode or https://github.com/fukuchi/libqrencode/archive/refs/tags/v4.1.1.zip

[jj2007]

A fast and compact QR Code encoding library - https://github.com/fukuchi/libqrencode or https://github.com/fukuchi/libqrencode/archive/refs/tags/v4.1.1.zip

Can you make a DLL out of that? My C/C++ installation is broken

[jack]

here's the 64-bit dll
but there were a number of warnings while compiling

[jj2007]

Thanks, Jack. In the meantime, I found a 32-bit version here, and it works:

Code Select Expand

include \masm32\MasmBasic\MasmBasic.inc
  Init
  Dll "libqrencode.dll"
  Declare QRcode_APIVersionString
  PrintLine QRcode_APIVersionString()
EndOfCode

Output: 3.9.0

Yours is version 4.1.1 (tests attached)

[jack]

sure

[jj2007]

Thanks a lot, Jack

There is documentation here, e.g. for QRcode_encodeString

Usage example here

[Biterider]

Hi
I've been experimenting a bit with the Nayuki project. Very straight forward API and easy to translate. 
I had to do a bit of tweaking replacing CRT functions to build the static libraries, but in the end everything works as expected.

Biterider

[jj2007]

I've been experimenting a bit with the Nayuki project. Very straight forward API and easy to translate. 

Great. I am playing with libqrencode.dll, QRcode_encodeString does return a bitmap handle (?), but I can't get it to display anything

P.S.: This doc says it's not a bitmap handle but rather a pointer to a structure

Code Select Expand

QRCODE STRUCT
  qrcVersion dd ?
  qrcWidth dd ?
  qrcData dd ?
QRCODE ENDS

qrcData points to an array of chars; only bit 0 is relevant, it's black or white (not surprisingly).

[TimoVJL]

One C example parsing data
https://gist.github.com/syohex/b1aa695dc6ac5dced139

[jj2007]

Yep, that's it, thanks Timo

int v = (*data & 1) ? 1 : 0;

I've been experimenting a bit with the Nayuki project.

How big is the dll?

[Biterider]

Hi JJ
I compiled the source code to create static libraries.
The 64-bit .lib file is 48 KB.

Biterider