Javier Serrano Polo

It looks like PDF417 support is incomplete. So someone should have access to the standard and finish the implementation.

ZBar does not handle any inclination (exception: SQ code), it only processes space/bar pairs horizontally and vertically. In QR code, it detects the corner finders like 1D barcodes.

AVFoundation may be a good start. FFmpeg is using this framework.

Yes, it might be possible.

>Supporting multiple codebars at the same image is a feature supported by ZBar. Is the [test case](https://bugs.debian.org/cgi-bin/bugreport.cgi?att=2;bug=869234;filename=qrpage.png;msg=5) expected to succeed?

> we only do reverse decoding when the normal one fails. Reverse decoding should be tried on the non-decoded part of the image, which may be implemented in the future.

The output is not sorted. Is it fine?

I believe the problem is when dealing with smoothed images, which is a limitation of ZBar. You should try decoding these tests. 400 %, cubic interpolation:  400 %, sinc...

>I'd like to license my contributions as MIT, while the project as a whole is still licensed as GPL. I think you are wrong, but I respect your decision regarding...

>I already stated my permission If you do not want to change `LICENSE.txt`, that is fine. >developers who don't want to license their contributions to my files under the MIT...