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Diffstat (limited to 'src/class/midi/midi.h')
| -rw-r--r-- | src/class/midi/midi.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/class/midi/midi.h b/src/class/midi/midi.h index 8121ec016..22e8e746f 100644 --- a/src/class/midi/midi.h +++ b/src/class/midi/midi.h @@ -189,7 +189,9 @@ TU_VERIFY_STATIC(sizeof(midi_desc_cs_endpoint_1jack_t) == 4+1, "size is not corr // MIDI 2.0 UMP Helpers //--------------------------------------------------------------------+ -// Return the number of 32-bit words for a UMP message given its Message Type +// Return the number of 32-bit words for a UMP message given its Message Type. +// Must never return 0: the tx packing loops in midi2_device/midi2_host advance +// by this count and would spin forever on a zero (they have no == 0 guard). static inline uint8_t midi2_ump_word_count(uint8_t mt) { switch (mt) { case 0x0: case 0x1: case 0x2: case 0x6: case 0x7: |