[sane-devel] "test" backend broke

[m. allan noah]

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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