Grabber refactoring/features

[brindosch]

Grabber refactoring overview as notice

• Sync feature level of all grabbers
• Add a monitor selection mode (at .json) (x11) on multi monitor setups to start the grabber always from another source, fallback to monitor 0 if the requested monitor not found
• connect to kodi check via proto for all grabbers (follow hyperion x11)
• Add to hyperiond a grabber starter which selects automatically the platform depending grabber
• Add enable option to all grabbers - in case of false don´t start the grabber
• PixelFormat option is available just for v4l2, x11 and framebuffer - sync it.
• v4l2 is a half exception here, cause it is often used at the same .json. But could also be externalized with a opt-in option for kodi check, if people use kodi just via v4l2.

@Paulchen-Panther @redPanther @penfold42

new pattern example - feel free to add more

    "framegrabber" : 
    {
        "enable" : true,        
        "width" : 64,
        "height" : 64,
        "frequency_Hz" : 10.0,
        "priority" : 890,
        "display" : 0,
        "cropleft" : 0,
        "cropright" : 0,
        "croptop" : 0,
        "cropbottom" : 0
    },

[redPanther]

-> externalize all grabbers this is already done!

all grabbers are available as standalone app. see folders in src/

[brindosch]

of couse, i forgot i rename it to "remove grabbers from hyperiond" ;)

[redPanther]

Would be nice if grabbers had a parent class like the led devices. We need a general grabber app too - to reduce code dups

[brindosch]

hm, yes makes sense. Could be also used for KodiCheck to disable or enable the grabber completely? (but would be a little bit a log mess, if you start and stop the grabber more frequent)

[redPanther]

.. I updated your issue, to be up to date with latest development.

[brindosch]

Thanks

[penfold42]

More good work!

I guess the next big 'grep' style cleanup we need to do is find all the exit() and throw() calls.

We don't really want any subcomponent stopping hyperiond