It turns out that slightly older versions of ALSA create different "pretty" port names for USB MIDI devices than slightly newer ones. The new versions use names that match those seen on other platforms. This means that to do port matching on Linux now requires a regexp to match the possible alternatives. This matters much more for the LPP, which has 3 input ports and 3 output ports, than it does for most devices that have a single input and single output, and we can "find" the ports just using simple string searching |
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midi_byte_array.h | ||
midi_surface.h |