RAW processing plug-in - any interest? (PhotoFlow Editor)

[PhotoFlow Editor]

Hi!

the initial implementation of the RAW loading plug-in turned out to be relatively easy… just a couple of spare-time coding hours to achieve the result shown in this screencast: https://youtu.be/9K6RJv-O6Yw <https://youtu.be/9K6RJv-O6Yw>


However, this is just the very beginning. Unfortunately I do not have much time to chat on IRC, only to read/write emails from time to time. Therefore, if any krater developer is reading those lines, here are a few questions (some might be trivial):

- is there a way to prioritise the file loading plug-ins in Krita? In my first experiments I had to remove the official impex/raw plug-in from the CMakeLists.txt file, otherwise my own plug-in would not be invoked…

- does Krita provide a mechanism to store arbitrary meta-data in the image structure? The idea would be to store the RAW processing parameters directly inside the krita image, so that next time the photoflow plug-in is invoked it can re-open the RAW file and restore the last saved processing parameters
GIMP provides such mechanism through functions like gimp_parasite_new() (https://developer.gimp.org/api/2.0/libgimpbase/libgimpbase-gimpparasite.html <https://developer.gimp.org/api/2.0/libgimpbase/libgimpbase-gimpparasite.html>) and gimp_item_attach_parasite() (https://developer.gimp.org/api/2.0/libgimp/libgimp-gimpitem.html <https://developer.gimp.org/api/2.0/libgimp/libgimp-gimpitem.html>)

- is there a way in Qt to spawn a process and pass parameters to it in the form of QStrings instead of char*? I would need this to properly invoke the photoflow executable with UTF8 file names…

- what is the best way to distribute the preliminary code so that experts can have a look?


By the way, the photoflow executable used for the test in the screencast is actually this AppImage package: https://github.com/aferrero2707/PhotoFlow/releases/download/continuous/PhotoFlow-20170307-git-stable-d1501a91826e6b768af51bf6c734bd989507915d.glibc2.14-dbg-x86_64.AppImage <https://github.com/aferrero2707/PhotoFlow/releases/download/continuous/PhotoFlow-20170307-git-stable-d1501a91826e6b768af51bf6c734bd989507915d.glibc2.14-dbg-x86_64.AppImage>
I simply downloaded the package, made is executable with

    chmod u+x PhotoFlow-20170307-git-stable-d1501a91826e6b768af51bf6c734bd989507915d.glibc2.14-dbg-x86_64.AppImage

and moved is to a folder in the PATH so that is gets automatically found:

    mv PhotoFlow-20170307-git-stable-d1501a91826e6b768af51bf6c734bd989507915d.glibc2.14-dbg-x86_64.AppImage $HOME/.local/bin/photoflow


This AppImage should be compatible with most of the current Linux distributions, and requires no installation of additional packages… just download the AppImage and run it!


> On 06 Mar 2017, at 18:42, EI <geneing at gmail.com> wrote:
> 
> By the way, Andrea, a good way to get help with code is to ask on irc channel #krita. Main developers hang out there during European day time. 
> 
> I also know some parts of krita code, so you are welcome to email me if you have questions.
> 
> Eugene
>  
> 
> Message: 1
> Date: Mon, 6 Mar 2017 11:00:15 +0100
> From: PhotoFlow Editor <photofloweditor at gmail.com <mailto:photofloweditor at gmail.com>>
> To: Krita's developers and users mailing list <kimageshop at kde.org <mailto:kimageshop at kde.org>>
> Subject: Re: RAW processing plug-in - any interest?
> Message-ID: <46E7AD14-0180-42C4-9241-EC0335871DC6 at gmail.com <mailto:46E7AD14-0180-42C4-9241-EC0335871DC6 at gmail.com>>
> Content-Type: text/plain; charset="utf-8"
> 
> 
> > On 06 Mar 2017, at 10:54, Simon Legrand <legrand.simon at gmail.com <mailto:legrand.simon at gmail.com>> wrote:
> >
> > Similarly to this potential project, the collaboration with G'mic a few years ago really helped to add a slew of filters to Krita that I find myself using very often.
> >
> > This makes a lot of sense to me. Let me know if I can help alpha test any progress.
> >
> > (feel free to contact me directly too)
> >
> > I'm not a Krita dev, just an artist using in in VFX so I won't be able to help with anything else but testing.
> 
> From my experience, testing and user feedback is at least as important as writing actual code, so your offer is definitely welcome!
> 
> I hope to get this started rather soon, and I will post here about the progress.
> 
> Thanks!
> 

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