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A MIDI file may omit the status byte when it repeats the previous one, so a run of notes on the same channel is encoded as data bytes alone. The decoder read each of those as a status byte, took the invalid-event branch and ended the track. Remember the last channel status byte and imply it when the next event begins with a data byte. System messages cancel it, as the specification requires. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This was referenced Oct 23, 2026
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A MIDI file may omit the status byte when it repeats the previous one, so a run of notes on the same channel is encoded as data bytes alone. The decoder read each of those as a status byte, took the invalid-event branch and ended the track.
This remembers the last channel status byte and implies it when the next event begins with a data byte. System messages cancel it, as the specification requires.
Verification. Cross-checked against
adafruit_midi_parseron a hand-built running-status file: the new decoder reproduces its note timeline exactly, the old one returned nothing. Builds clean on arm and xtensa. No hardware.Size. About +128 bytes of flash on nrf52840, plus one byte per
MidiTrackobject.Stacked on #34 — review that first.
🤖 Generated with Claude Code