Hi, On Sun, Mar 31, 2002 at 10:21:06PM +0200, mh wrote: > One remark: > You allow a three-pass/handscanner simulation in color mode with a bit depth > of 1 (which crashes xsane and xscanimage and lets quiteinsane loop forever).
I can't reproduce this with xsane 0.84 in viewer mode. The scanned image is wrong (if it's not completely black) but it doesn't crash even if I enable both three-pass and hand-scanner simulation. When scanning the preview it complains that it can't handle bit depth 8 :-) xscanimage (CVS) refuses to preview without any options set but shows "something" in three-pass mode. When scanning it "works" with and without three-pass mode, however, the pnm images aren't correct. With quiteinsane 0.4.1 I get an error message without any error text when trying to scan in 1-bit color mode even if I don't select three-pass and/or hand-scanner simulation. Do you use any other special options? > Is this just a bug in the test backend or one of the tests ? (Most probably, > of course, it's an attempt to drive frontend authors insane :-) 1-bit RGB *is* insane. However, the SANE standard allows this combination, at least that's my conclusion. The mustek backend supported this mode years ago, because the scanners can do it natively. I removed it because I thought it doesn't make much sense. So I guess the best thing is to just refuse to scan in 1-bit RGB. hand-scanner and three-pass together probably won't be found in the wild. But again, I think it's allowed by the SANE standard as long as the frames stay the same size. There may be a bug in the test backend especially in the 1-bit RGB mode. I can't really test this mode because no frondend seems to really support it :-) Can you try to locate the position in the test backend where it loops or breaks (SANE_DEBUG_TEST=255)? Bye, Henning
