Guy Brooker wrote: > A front end question ! > > As far as I understand from the SANE spec, a backend may send colour image > data as either an R, G & B sample per pixel, what TWAIN refers to as chunky, > or as three separate images, one of R, one of G and one of B, what TWAIN > refers to as planar. > > Is there any way of forcing a backend to go one way or another ?
No. It depends on how the backend has been coded; which itself depends on how the scanner returns the data. > And secondly, is there any way of determining if the data will be planar or > chunky before calling sane_start() ? I don't think so. It seems that all recent backends do only one pass, so you might get away with not coding for 3 passes backends. Frank.
