trial and error. On Fri, Feb 20, 2009 at 9:12 AM, Stefan Below <stefanbelow at gmx.de> wrote: > m. allan noah schrieb: >> 2009/2/20 Stefan Below <stefanbelow at gmx.de>: >> >>> Hello, >>> >>> i have a nice little pen scanner (C-Pen 10) and i would like to write a >>> driver for this device. I have already captured some data with usbsnoop and >>> converted it with the perlscript. replaying is working fine. >>> My onlz problem is, that i am comming from the java world and i have zero >>> experience with C. Nevertheless i will give it a try. I think it should >>> quite easy, because the pen scanner has no switches etc. My first question >>> is, how can i write the output i received with my generated driver into a >>> file? >>> >> >> fopen, fwrite, fclose they have man pages. >> >> you might also want to write a pnm header to it first, but you can do >> that afterwards with a good editor like vim. >> >> > > ok, now i have the raw data in my file, but i still have problems with > the header. I have now idea how to determine the width and height... > > This is the only spec i found: > > Image resolution: approx. 400 dpi > Focal tolerance: 2 mm > Reading speed: 15 cm/s > Character size: 5-22 pt > Field of view: 7,2 x 5,5 mm > > how can i determine the correct header? > >>> Here are the log file and the "generated driver" >>> >> >> wow, that does look simple. the only problem i see from sane side is >> that it uses multiple interrupt endpoints. the sanei_usb support lib >> might need some updates to support that. >> >> allan >> > > > -- > sane-devel mailing list: sane-devel at lists.alioth.debian.org > http://lists.alioth.debian.org/mailman/listinfo/sane-devel > Unsubscribe: Send mail with subject "unsubscribe your_password" > to sane-devel-request at lists.alioth.debian.org >
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