Give your BuddyPress members an option to choose which category they need to upload media files to.
Categories media based on attributes. Site owner need to create attributes. When user upload a media, can select in which attribute that media can add.
Attribute is nothing but custom taxonomy which can be predefined by site owner. So that end users/members of site can use during media upload.
You can set as many attributes as you want for media such as Photo Category, Camera Type, Location. etc.