zbar mchehab/zbar https://github.com/mchehab/zbar/issues The ZBar Bar Code Reader is a library for scanning and decoding bar codes from various sources such as video streams, image files or raw intensity sensors. It supports EAN, UPC, Code 128, Code 93, Code 39 and Interleaved 2 of 5. The flexible, layered architecture features a fast, streaming interface with a minimal memory footprint.