Custom access control

Hello,
Can i have a custom access control for file download?

I use eMember plugin to protect member area and i’d like to use Download manager for file download. When downloading a file, I want that Download manager to check if the user is logged in as an eMember and only then to give access to that file.

Do you have some hook to add custom function to check access or any solution?

Thank you!

https://wordpress.org/plugins/download-manager/