Agelos Pappas agelos at smartcode.gr
Fri Jun 22 02:03:25 EDT 2012

Hi Benjamin,

it would be great if you could add the libxml2 dependency for me. 
Afterwards I will follow the steps you suggested to add the new vendor 
file in the project. I used Visual Studio 2010 for this, but I keep 
thinking that this is not the right choice. It doesn't even support C99. 
I might switch to Mingw or Pelles-C for this.


On 21/6/2012 11:43 μμ, Benjamin Gilbert wrote:
> On 06/21/2012 12:34 PM, Agelos Pappas wrote:
>> I have added a new vendor handler in my local copy of the project and
>> changed two files (openslide-private.h & openslide.c) to introduce the
>> new function in tiff_formats[] and in the header. Basically the new file
>> is just a copy of the generic tiff vendor file with only slight changes.
> I had a quick glance at the example slide files available on the Leica 
> website.  The XML in the IFD 0 ImageDescription field contains a bunch 
> of useful information for Leica-specific OpenSlide properties. 
> Significantly, it also contains the mapping from logical images (main 
> slide and macro) to TIFF IFDs.  So OpenSlide will need to parse this 
> data.
> If you'd like, I can handle adding the XML parser dependency to 
> Autoconf/Automake for you, since I assume you don't have a good way to 
> test the Autotools build.
> libxml2 appears to be the obvious choice of XML library.  Adam?
>> Can you guide me on how to commit these changes to the project? Should I
>> just attach the modified files in the list or should I use github?
> I suggest creating a pull request on GitHub.  This is a bit 
> complicated if you haven't done it before.
> 1.  Create a GitHub account if you don't already have one.
> 2.  Go to <https://github.com/openslide/openslide> and click the 
> "Fork" button at the top of the page.  That will create a clone of the 
> OpenSlide repository inside your own GitHub account.
> 3.  Use Git to push your changes to a branch in your repository.
> 4.  On the GitHub page for your repository, click the "Pull Request" 
> button at the top of the page, fill out the form and submit.
> --Benjamin Gilbert
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