DLD Changes

[Robert Helling]

Hi,

> On 15.04.2016, at 16:18, Miika Turkia <miika.turkia at gmail.com> wrote:
> 
> (Not that I would have a clear
> picture on what Robert has done on Subsurface end regarding picture
> management in-between :D)


not much actually. But (and I guess that was also the case the last time we spoke about this) in subsurface, images can be URLs. That is a picture has this thing that is called “filename”, but that can be more general. First we try to interpret that as a local filename and see if that loads as a picture. If it doesn’t, we interpret is as a URL and download it (upon displaying the dive) from the interwebs. Once successfully downloaded, we cache that picture and (based on its hash value)  access the local version. So if Rainer provided us just with a valid image URL the rest would automagically work from there.

If you further wanted to preserve bad with, the server could already compute the SHA1 hash of the image file. In that case we wouldn’t even load it if we had a local copy with a different “Filename”.

Upload, of course is a different matter.

Best
Robert

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Robert C. Helling     Elite Master Course Theoretical and Mathematical Physics
                      Scientific Coordinator
                      Ludwig Maximilians Universitaet Muenchen, Dept. Physik
                      Phone: +49 89 2180-4523  Theresienstr. 39, rm. B339
                      http://www.atdotde.de

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