Thanks for the info. If only I could find a source for this data, I wouldn't
bother the list with such basic questions.
Anyway, I experimented a bit more, but I cannot find a way to get the
color organized. As I wrote a mail before, the image appears, in different
colors, displaced horizontally. Something like
should be Is
note: these stripes are 5 to 50 scan lines wide...
And colors are changing too. It seems to have something to do with the
machine's activity at the moment: the horizontal stripes are wider with
less activity. It's a bit difficult to describe in words.
I have the impression there's some data loss at the beginning of the
transferred block... Any way to test this?
On Thu, 21 Dec 2000 02:25:06 +0800 Steve Underwood <firstname.lastname@example.org> wrote/El dddd> John Coppens wrote:
> > Hi Chris.
> > A few (possibly) hints...
> > I've been checking the debug log and found a few strange things.
> > - Says buffer is size = 31725 bytes, 55 lines. At 1269 bytes/lines this
> > can't be (should be 25). I checked the source code and found:
> Have you allowed for the chroma offset ring-buffer?
Mmmm... how much space does this occupy? And why is the effective
space calculated without subtracting this space first?
> > DBG (DL_DATA_TRACE,
> > "%s: effective buffer size = %lu bytes, %lu lines\n",
> > me,
> > (u_long) pss->buf_sz,
> > (u_long) (pss->buf_sz ? pss->buf_sz / pss->lines : 0));
> > I suppose this should be / pss->bytes_per_line
> Yes, this looks like a silly slip.
> > - A bit before that, it says : set_window: bits-per-pixel set to 30
> > How can this result in 3 bytes/pixel afterwards? I couldn't find
> > how the extra 2 bits (*3) are sent... Are they packed in another block?
> The scanner is using 30 bits, but after gamma correction it only outputs 24 bits to the host. This is normal behaviour for a 30 bit
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