func initCameraEventSource(camera *gphoto2go.Camera) {
go func() {
for {
eventChan := camera.AsyncWaitForEvent(1000)
evt := <-eventChan
if evt.Type == gphoto2go.EVENT_FILE_ADDED {
bus.Publish("photo:capture", camera, evt.Folder, evt.File)
}
}
}()
}
