Mappings allowed are those understood by the midi_make_contour_map function. The default mapping is 'dowling'.
The contour for each track is output to the standard output. Note that the first track in type-1 files often contains no notes, only meta-data, and so will usually be blank.
$ ./printcons ../testdb/queries/axelf.mid
udrudduudruddduuddrdud
Another example, this time using the 'extended' contour mapping:
$ ./printcons ../testdb/queries/axelf.mid extended
udrUDduUDrUdDdUUDdrdUd
Finally, an example using the new 'alphabet' contour mapping:
$ ./printcons.exe ../testdb/queries/axelf.mid alphabet
Cc-EebBGg-HadcGElb-cGb