Fix spa_ump_to_midi() MIDI 2.0 channel pressure (0xD0) to emit the
status byte before the data byte. The fallthrough from default caused
the status to be missing, producing 1 byte instead of 2.
Mask bank MSB and LSB with 0x7f in MIDI 2.0 program change conversion
to ensure valid MIDI 1.0 data bytes.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Fix spa_ump_from_midi() to correctly encode short sysex messages as
Complete (0x0) instead of Start (0x1) when the entire message fits in
one UMP packet. Handle bare F7 termination when no data bytes follow.
Support 0xF7 as a sysex continuation marker and optional trailing 0xF0
as a continuation boundary.
Add unit tests for UMP/MIDI conversion covering note on, program change,
sysex complete/multi-packet/continue, system realtime, F7 continuation,
bare F7 end/complete/orphan, and trailing F0 scenarios.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
