I dont know a scanner that can store a single frame completely. For an
A4 scan at 600 dpi with 24bit you would need about 100MB of memory.
Maybe this works for b/w scans at low resolution. But in that case I
suppose the scanner will not accept to start a new scan when the image
has not been read completely.
> JFL Sane Dev wrote:
> I am a beginner with SANE. Could anyone tell me please how should a
> scan-ahead (automatic scan, the scanner scans asynchronously at
> highest possible speed to its internal memory buffer, the driver reads
> images at its own speed from the scanner buffer) image acquisition
> sequence be implemented in a SANE session?
> If the driver starts the scanner in automatic mode at first sane_start
> it receives, would the application have to not request sane_cancel
> until all images are transferred?
> If the application would call repeatedly sane_start +
> sane_read_until_SANE_STATUS_EOF for each image, and then call
> sane_cancel when sane_start (or sane_read) returns
> SANE_STATUS_NO_DOCS? Would this be the correct procedure?
> Marius Niculescu
-- Peter Kirchgessner http://www.kirchgessner.net mailto:firstname.lastname@example.org
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