How is gp_camera_wait_for_event working ? about python-gphoto2

[benoitguigal]

ok it very clear, thanks a lot

[jim-easterbrook]

I've not used gp_camera_wait_for_event myself so I don't know what to expect. It's probably camera and/or driver dependent. This is a question about libgphoto2 rather than about the Python interface so it might be worth asking on the gphoto2 mailing list.

[jim-easterbrook]

I've just looked at the documentation of gp_camera_wait_for_event. The second parameter is a timeout value, but you are passing gp.GP_EVENT_FILE_ADDED so your call is timing out in 2 milliseconds.

[benoitguigal]

In gphoto2 version >= 2.5.6 it is possible to pass string value like 'FILEADDED' or 'CAPTURECOMPLETE' to the wait_event function.
https://github.com/gphoto/gphoto2/blob/master/NEWS. Do you think it is possible to call this underlying function instead of the function with the timeout ?

[jim-easterbrook]

python-gphoto2 is a Python interface to the libgphoto2 C library (see http://www.gphoto.org/doc/api/). It doesn't add functionality unless absolutely necessary, e.g. to use Python types. The gphoto2 command line tool is a separate entity. Its wait-event option presumably uses gp_camera_wait_for_event internally.

You can easily write your own Python function to call gp_camera_wait_for_event repeatedly until it returns the event type you want.