Man pages matching name wildmidi_convertbuffertomidi in section 3:

WildMidi_ConvertBufferToMidi.3.en	debian 10 / libwildmidi-dev
WildMidi_ConvertBufferToMidi.3.en	debian 11 / libwildmidi-dev
WildMidi_ConvertBufferToMidi.3.en	debian 12 / libwildmidi-dev