[sane-devel] "test" backend broke

[Chris Bagwell]

I think this is the interesting part of --help?

  Geometry:
    -l 0..200mm (in steps of 1) [0]
        Top-left x position of scan area.
    -t 0..200mm (in steps of 1) [0]
        Top-left y position of scan area.
    -x 0..200mm (in steps of 1) [80]
        Width of scan-area.
    -y 0..200mm (in steps of 1) [100]

So the values shown as default do not seem to be used.

Your information has limited the problem enough that I don't mind 
debugging it from here.

Thanks,
Chris

m. allan noah wrote:
> with a couple week old cvs, when i run your command i get this:
>
>   
>> scanimage -d test -T
>>     
> scanimage: scanning image of size 157x196 pixels at 8 bits/pixel
> scanimage: acquiring gray frame, 8 bits/sample
> scanimage: reading one scanline, 157 bytes...	PASS
> scanimage: reading one byte...		PASS
> scanimage: stepped read, 2 bytes... 	PASS
> scanimage: stepped read, 4 bytes... 	PASS
> scanimage: stepped read, 8 bytes... 	PASS
> scanimage: stepped read, 16 bytes... 	PASS
> scanimage: stepped read, 32 bytes... 	PASS
> scanimage: stepped read, 64 bytes... 	PASS
> scanimage: stepped read, 128 bytes... 	PASS
> scanimage: stepped read, 256 bytes... 	PASS
> scanimage: stepped read, 255 bytes... 	PASS
> scanimage: stepped read, 127 bytes... 	PASS
> scanimage: stepped read, 63 bytes... 	PASS
> scanimage: stepped read, 31 bytes... 	PASS
> scanimage: stepped read, 15 bytes... 	PASS
> scanimage: stepped read, 7 bytes... 	PASS
> scanimage: stepped read, 3 bytes... 	PASS
>
> but if i add -x 1 -y 1, i get this:
>
>   
>> scanimage -d test -x 1 -y 1 -T
>>     
> scanimage: rounded value of br-x from 0.999985 to 1
> scanimage: rounded value of br-y from 0.999985 to 1
> scanimage: scanning image of size 1x1 pixels at 8 bits/pixel
> scanimage: acquiring gray frame, 8 bits/sample
> scanimage: reading one scanline, 1 bytes...	PASS
> scanimage: reading one byte...		FAIL Error: End of file reached
>
>
> If the image is too small (only has one scanline, etc), then scanimage
> -T runs out of data. It's just poorly programmed, because it is rarely
> used. The bigger question is why does your copy of the test backend
> have such a small scan area? what does 'scanimage -d test --help'
> show?
>
> allan
>
> On Wed, Feb 18, 2009 at 10:56 PM, Chris Bagwell <chris at cnpbagwell.com> wrote:
>   
>> Hi all,
>>
>> I was converting the testsuite directory to automake but I noticed in
>> CVS version of sane that the following basic command doesn't work.  So
>> not much for me to test right now.
>>
>> frontend/scanimage -d test -T
>> lt-scanimage: scanning image of size 1x1 pixels at 8 bits/pixel
>> lt-scanimage: acquiring gray frame, 8 bits/sample
>> lt-scanimage: reading one scanline, 1 bytes...    PASS
>> lt-scanimage: reading one byte...        FAIL Error: End of file reached
>>
>> Running 1.0.19 from my /usr/bin does work for same command line.  Anyone
>> know when it broke?
>>
>> Chris
>>
>>
>>
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>>     
>
>
>
>