[sane-devel] Does sane_read return multiple scanlines?

[Peter Kirchgessner]

Hi,

sane_read can return multiple lines. Depending on the type of the scan 
and the used depth (1,8,16) parm.bytes per line could be
(parm.pixels_per_line+7)/8, parm.pixels_per_line, 
parm.pixels_per_line*2, parm.pixels_per_line*3, 
parm.pixels_per_line*2*2, parm.pixels_per_line*3*2.

--Peter

Peter Chen schrieb:
> Hi,
> 
> I am a little confused about this. I guess sane_read could return multiple
> scanlines, the number of bytes returned is in len. The width of the image is
> in parm.pixels_per_line, the height of the image is in parm.lines,
> parm.bytes_per_line could be the same as parm.pixels_per_line or
> parm.pixels_per_line*3, is this correct?
> 
> Thanks,
> 
> Peter
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-- 
Peter Kirchgessner
http://www.kirchgessner.net
mailto:peter@kirchgessner.net