// the find
alvinnguyen-chipmunk/zebra-scanner-library
A C library for barcode/qrcode decode data from zebra PL-3307
A thin C library wrapping the Zebra PL-3307 barcode scanner over SSI/USB CDC, written for a specific industrial deployment (MSI Bus System). Zero stars, one fork, last touched in 2018 — this is internal tooling that leaked public, not a general-purpose library.
Includes a working example in barcode_demo.c so you can see the API in use immediately. Ships with autotools (configure.ac, Makefile.am) which at least makes it buildable without guessing. The SSI protocol header (ssi.h) is included, meaning you're not chasing a separate spec document for the wire format.
Abandoned since 2018 with zero community traction — if the PL-3307 firmware ever shipped a breaking SSI change, there is nobody watching this to fix it. The README is entirely setup instructions for Windows hardware config, not API documentation — you get no function signatures, no data structures, no error handling guide. Windows-only companion tooling with no Linux path documented despite it being a C library. Single-device support for one specific Zebra model; anyone needing broader scanner support would need to rewrite the SSI layer anyway.