diff options
| author | Takashi Iwai <tiwai@suse.de> | 2023-05-23 09:53:48 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-05-23 12:11:24 +0200 |
| commit | 177ccf811df4a893df339a72dc732bb26b66d055 (patch) | |
| tree | d27eda87207fd6e0e810a6ca25df25d7fe02241f /include/uapi/sound | |
| parent | 74661932ac5ecb12e4378f41083be6ac17804e71 (diff) | |
ALSA: seq: Support MIDI 2.0 UMP Endpoint port
This is an extension to ALSA sequencer infrastructure to support the
MIDI 2.0 UMP Endpoint port. It's a "catch-all" port that is supposed
to be present for each UMP Endpoint. When this port is read via
subscription, it sends any events from all ports (UMP Groups) found in
the same client.
A UMP Endpoint port can be created with the new capability bit
SNDRV_SEQ_PORT_CAP_UMP_ENDPOINT. Although the port assignment isn't
strictly defined, it should be the port number 0.
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230523075358.9672-28-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/uapi/sound')
| -rw-r--r-- | include/uapi/sound/asequencer.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/sound/asequencer.h b/include/uapi/sound/asequencer.h index c6ca6609790b..67532c46b115 100644 --- a/include/uapi/sound/asequencer.h +++ b/include/uapi/sound/asequencer.h @@ -428,6 +428,7 @@ struct snd_seq_remove_events { #define SNDRV_SEQ_PORT_CAP_SUBS_WRITE (1<<6) /* allow write subscription */ #define SNDRV_SEQ_PORT_CAP_NO_EXPORT (1<<7) /* routing not allowed */ #define SNDRV_SEQ_PORT_CAP_INACTIVE (1<<8) /* inactive port */ +#define SNDRV_SEQ_PORT_CAP_UMP_ENDPOINT (1<<9) /* MIDI 2.0 UMP Endpoint port */ /* port type */ #define SNDRV_SEQ_PORT_TYPE_SPECIFIC (1<<0) /* hardware specific */ |