def callback(ext_db, object, user_param1, ...)
Emitted when a metadata item needs to be written to a local file. This only needs to be used for metadata that needs to be encoded or compressed, such as images.
ext_db : |
instance of RB.ExtDB that is emitting the signal |
object : |
|
user_param1 : |
first user parameter (if any) specified with the connect() method |
... : |
additional user parameters (if any) |