jasp00 / zbar-0.11 Goto Github PK

I will try to merge this repository with the fork from Mauro Carvalho Chehab. Development should continue at https://github.com/mchehab/zbar.

Hi! I know this isn't the official repo or anything but perhaps you can fix this in your own fork.

I am attempting to make a PDF417 barcode reader for the web using Web Assembly (there's a few out there but the only reliable one is licenced). The idea is simple, just build a binary file with C code that can be called via JavaScript.

I followed this guide which got me almost there! I had to add --enable-codes=pdf417 as a parameter to configure to enable PDF417 symbols and disable all the others I'm not interested in.

The code actually works amazingly well for any other type of symbol (see demo) but if I compile ZBar to accept PDF417, it detects it but throws a warning:

WARNING: zbar/decoder/pdf417.c:73: pdf417_decode8: Assertion "clst >= 0 && clst < 9" failed.
dir=0 sig=5a44 k=9 buf[0000]=

WARNING: zbar/decoder/pdf417.c:89: pdf417_decode8: Assertion "g[0] >= 0 && g[1] >= 0 && g[2] >= 0" failed.
dir=1 sig=ca03 k=6 g0=ffffffff g1=e71 g2=585 buf[0000]=

Those assertions are on lines 71 and 86 of ZBar.

You can see all the code I'm using in the guide I mentioned earlier (the only difference is that I enabled PDF417 before compiling) ¿Any ideas?