Re: [PATCH v2 5/5] ptp-gadget: update documentation

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On Fri, 16 Apr 2010 19:08:06 +0200 (CEST)
Guennadi Liakhovetski <g.liakhovetski@xxxxxx> wrote:
...
> > -Known problems: not yet working with MS Windows Vista.
> > +Known problems:
> > +not yet working with MS Windows Vista (but works with Windows Vista
> > +with Service Pack 1 or Service Pack 2 installed).
> > +Multi-page TIFF files are not supported yet.
> 
> Is this because we cannot generate thumbnails from them or why?

"convert" generates thumbnails for each image in a multipage TIFF
file and stores them with appended index number in a file name. We
pass a file name for the thumb file at the command line and look for
the presence of this file after convertion.
E.g. running

"convert -thumbnail 160x120 file.tif file.thumb.jpeg"

on a multipage TIFF file "file.tif" with two images produces two
thumbs, "file.thumb-0.jpeg" and "file.thumb-1.jpeg". But we are
looking if "file.thump.jpeg" is present, and if it isn't, we assume
that the thumb generation failed.

In the case the thumb generation didn't succeed, the image is not
linked to the object list while enumeration of the objects and so
it is just ignored.

Anatolij

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