Re: [sane-devel] Canon Canoscan LiDE 400 support in Slackware

2020-01-10 Thread Kelly Price
Slackware... man, that was the first distro I used... I wonder what... Version 14.2... TWENTY SIXTEEN?!? *checks change logs* Okay, It's at a semi-decent kernel and sane was updated to 1.0.28 on August 1st 2019. Are you using this on a USB 3.0 port, or a USB 2.0 port backed by the xhci driver?

[sane-devel] Canon Canoscan LiDE 400 support in Slackware

2020-01-10 Thread Rich Shepard
My old Epson flatbed scanner died. After looking on the supported devices page I bought a Canon Canoscan LiDE 400 which is shown as having 'complete' support. However, the pixma and other scanner module for Slackware don't support this scanner. sane-find-scanner identifies it, but scanimage -L

Re: [sane-devel] Converting Raw Image Data to PNG

2020-01-10 Thread m. allan noah
Please note that the image could be truly raw data from the scanners read heads, not like the 'raw' files produced by cameras, which typically contain lots of meta information about the camera and the image. The data you get could be scrambled, interlaced, interleaved, inverted and uncorrected,

Re: [sane-devel] Converting Raw Image Data to PNG

2020-01-10 Thread Olaf Meeuwissen
Hi Daniel, dan...@pixelgrease.co writes: > Hello, > > I have been trying to get a device running for a few weeks now. After > failing to build a backend I decided to hack together my own LibUSB > driver for my unsupported A8 scanner, given my use case is pretty simple > I went in with a "how

Re: [sane-devel] Converting Raw Image Data to PNG

2020-01-10 Thread Alexander Pevzner
Hi Daniel, On 1/10/20 8:09 AM, dan...@pixelgrease.co wrote: 1. What format is that raw data likely to be? I naively expected it to be png. 2. Does SANE have some code that handles that sort of conversion I could have a look at? Looked around the internet and the SANE docs. Read some things