Working Camera Examples?

[driskel]

I am trying to use the camera widget on the most recent release of MPF on a Mac Laptop.

When the slide is displayed I see the camera turn on as expected, I do not see the output of the camera on a slide.

Here is my test harness for just this:

#config_version=5

hardware:
    platform: p3_roc
    driverboards: pdb
   
mpf-mc:
    widgets:
        camera: mpfmc.widgets.camera

displays:
    window:
        width: 1280
        height: 720
             
window:
    width: 1280
    height: 720
   
slide_player:
   mc_ready:
       camera:
           target: window    
                             
slides:
    camera:
        widgets:
            - type: camera
              width: 1028
              height: 720

[driskel]

I have tried using a window as well as a SmartMatrix (DMD) with the same result.

[jabdoa]

Do other widgets like images show up in your example? I guess they would so this is just to rule out problems in your test harness.

Do you need the mpf-mc section? Camera widget should be in there by default I suppose.

It might be actually broken. I'm not aware that somebody is actively using it. Brian wrote it as a proof of concept a while back.

You can try this kivy example: https://kivy.org/docs/examples/gen__camera__main__py.html to see if you camera works at all with kivy/SDL2.

Jan

[driskel]

I will test other examples.

In my tests, the mpf-mc section was required.  But I will try again.

Thank you.

[driskel]

I was just testing the camera functionality in my Proof of concepts machine.  So I do not have a pressing need for it.

Do other widgets like images show up in your example? Yes

Do you need the mpf-mc section? Camera widget should be in there by default I suppose.  Yes, otherwise this error occurs.

2018-06-16 10:00:20,525 : kivy : "camera" is not a valid MPF display widget type. Did you misspell it, or forget to enable it in the "mpf-mc: widgets" section of your machine config?
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/mpfmc/config_collections/widget.py", line 43, in process_widget
    widget_cls = WidgetCollection.type_map[config['type']]
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/mpf/core/case_insensitive_dict.py", line 21, in __getitem__
    return super().__getitem__(self.__class__.lower(key))
KeyError: 'camera'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/mpfmc/commands/mc.py", line 189, in __init__
    thread_stopper=thread_stopper).run()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/kivy/app.py", line 828, in run
    runTouchApp()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/kivy/base.py", line 504, in runTouchApp
    EventLoop.window.mainloop()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/kivy/core/window/window_sdl2.py", line 663, in mainloop
    self._mainloop()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/kivy/core/window/window_sdl2.py", line 405, in _mainloop
    EventLoop.idle()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/kivy/base.py", line 339, in idle
    Clock.tick()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/kivy/clock.py", line 581, in tick
    self._process_events()
  File "kivy/_clock.pyx", line 367, in kivy._clock.CyClockBase._process_events (/private/var/folders/5p/8kcfqh4s4f3776sdbb4_217h0000gn/T/pip-build-z3bue63m/kivy/kivy/_clock.c:7352)
  File "kivy/_clock.pyx", line 397, in kivy._clock.CyClockBase._process_events (/private/var/folders/5p/8kcfqh4s4f3776sdbb4_217h0000gn/T/pip-build-z3bue63m/kivy/kivy/_clock.c:7229)
  File "kivy/_clock.pyx", line 395, in kivy._clock.CyClockBase._process_events (/private/var/folders/5p/8kcfqh4s4f3776sdbb4_217h0000gn/T/pip-build-z3bue63m/kivy/kivy/_clock.c:7150)
  File "kivy/_clock.pyx", line 167, in kivy._clock.ClockEvent.tick (/private/var/folders/5p/8kcfqh4s4f3776sdbb4_217h0000gn/T/pip-build-z3bue63m/kivy/kivy/_clock.c:3260)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/mpfmc/uix/display.py", line 200, in _displays_initialized
    self.mc.displays_initialized()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/mpfmc/core/mc.py", line 336, in displays_initialized
    self._init()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/mpfmc/core/mc.py", line 360, in _init
    self.events.process_event_queue()
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/mpf/core/events.py", line 729, in process_event_queue
    **event[3])
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/mpf/core/events.py", line 698, in _process_event
    result = self._run_handlers(event, ev_type, kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/mpf/core/events.py", line 656, in _run_handlers
    result = handler.callback(**merged_kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/mpfmc/core/config_collection.py", line 50, in create_entries_from_root_config
    self.create_entries(self.mc.machine_config[self.config_section])
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/mpfmc/core/config_collection.py", line 61, in create_entries
    self[name] = self.process_config(settings)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/mpfmc/config_collections/slide.py", line 33, in process_config
    config['widgets'][i] = self.mc.widgets.process_widget(widget)
  File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/mpfmc/config_collections/widget.py", line 50, in process_widget
    config['type']))
ValueError: "camera" is not a valid MPF display widget type. Did you misspell it, or forget to enable it in the "mpf-mc: widgets" section of your machine config?

[jabdoa]

Makes sense then. We probably never really included it then.

Do the kivy examples work? If yes this should be something simple.

Jan

[driskel]

Yes, the kivy example works for me.

I quickly assuming that maybe we are enabling the camera, but we are not playing what is on the camera

Here is a use case for the camera:

1) On high score, let someone pose in front of the camera, press the flipper to snap a photo and then retain the photo for use in displaying high scores.

2) On ball drain, show the players face :)