re: Really, for what you are trying to do, you might be better off interfacing with the SANE API instead of trying to drive scanimage.
Thanks. This is something I have thought before. Right now I invoke scanimage as a subprocess for each batch, so there is a noticeable delay while it polls the USB addresses. It would be nice to do that once and have each batch start quickly. If I had more access to the scanner for debugging I might use that approach. Meanwhile I will check out scanimage sources. On Sat, Dec 9, 2023 at 2:49 PM m. allan noah <kitno...@gmail.com> wrote: > Look at the source code for scanimage, see how it translates SANE_status > to exit codes. If that is not sufficient, you might need to catch its > STDERR stream, and parse it. > > Really, for what you are trying to do, you might be better off interfacing > with the SANE API instead of trying to drive scanimage. > > allan > > On Sat, Dec 9, 2023 at 2:25 PM Wes Rishel <wris...@gmail.com> wrote: > >> I have a program that uses SANE to run a Fujitsu fi-5900c scanner, but I >> only have access to the scanner when I am doing production work. So I am >> writing code on a system where the scanner is not available. >> >> It would help to have a list of the return codes from scanimage while >> working on a Fujitsu scanner. In particular, I would like to identify the >> error codes returned for various errors where the operator might correct >> them. Examples include stops due to double feeds, due to something stuck on >> the page (like a sticky note), due to a failure to pass a single page >> through the scanner, and so forth. I know that fujitsu.c somehow sets >> different return codes for some of these situations but I haven't found the >> list in sane-fujitsu(5) or sane-epjitsu(5). >> >> I believe that a good enough list is the SANE_status enum for the general >> SANE specification. >> >> What I don't know is how to map the various values in the enum to the >> return codes that scanimage uses on exit or whether there are specific >> additional values for Fujitsu. >> >> Can someone share the secret decoder ring ;-) or point me to a document >> or source file that has this info? >> >> Thanks in advance. >> >> -- Wes >> > > > -- > "well, I stand up next to a mountain- and I chop it down with the edge of > my hand" >
