This extension defines a feature, log:log, which allows plugins to print log messages with an API much like the standard C printf functions. This allows, for example, plugin logs to be nicely presented to the user in a graphical user interface.
Different log levels (e.g. error
or information
) are defined
by URI and passed as an LV2_URID. This document defines the typical levels
which should be sufficient, but implementations may define and use additional
levels to suit their needs.