[sane-devel] scanadf not generating PNM images

m. allan noah kitno455 at gmail.com
Mon Apr 30 17:48:28 UTC 2012

scanadf is basically deprecated. does scanimage work?


On Mon, Apr 30, 2012 at 1:26 PM, sean darcy <seandarcy2 at gmail.com> wrote:
> On 04/30/2012 02:12 AM, Jeffrey Ratcliffe wrote:
>> On 29 April 2012 21:27, sean darcy<seandarcy2 at gmail.com>  wrote:
>>> scanadf is generating images that aren't PNM. Maybe the it's generating
>>> raw?
>>> Shouldn't it be generating a PNM file? Is there an option to have it
>>> generate a PNM file?
>> I think this is problem with the backend not sending enough data -
>> i.e. the backend reports via params that a scan of n x m should
>> appear, and therefore the frontend writes the appropriate PNM header,
>> plus all the data it gets until it gets EOF, but that the x bytes that
>> appear don't make up n x m.
>> Any post processing tools than complain that the PNM is not valid.
>> I've had to put a workaround in the development version of gscan2pdf
>> to pad the end of the file with whitespace in order to get a valid
>> PNM.
>> Regards
>> Jeff
> I don't think that's the problem here. I looked at the scan file with a hex
> editor. All zeros. No magic number, no x or y.
> sean
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