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| author | Takashi Iwai <tiwai@suse.de> | 2023-05-23 09:53:57 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-05-23 12:11:38 +0200 |
| commit | d2b706077792a366fac8c1db2f1b4406ad7da482 (patch) | |
| tree | a8b3a7e0a521b51d67a5f1d650d0007b4c545082 /include/uapi/sound | |
| parent | ALSA: seq: Print UMP Endpoint and Block information in proc outputs (diff) | |
| download | linux-d2b706077792a366fac8c1db2f1b4406ad7da482.tar.xz linux-d2b706077792a366fac8c1db2f1b4406ad7da482.zip | |
ALSA: seq: Add UMP group filter
Add a new filter bitmap for UMP groups for reducing the unnecessary
read/write when the client is connected to UMP EP seq port.
The new group_filter field contains the bitmap for the groups, i.e.
when the bit is set, the corresponding group is filtered out and
the messages to that group won't be delivered.
The filter bitmap consists of each bit of 1-based UMP Group number.
The bit 0 is reserved for the future use.
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230523075358.9672-37-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 | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/uapi/sound/asequencer.h b/include/uapi/sound/asequencer.h index c75f594f21e3..5e91243665d8 100644 --- a/include/uapi/sound/asequencer.h +++ b/include/uapi/sound/asequencer.h @@ -362,7 +362,8 @@ struct snd_seq_client_info { int card; /* RO: card number[kernel] */ int pid; /* RO: pid[user] */ unsigned int midi_version; /* MIDI version */ - char reserved[52]; /* for future use */ + unsigned int group_filter; /* UMP group filter bitmap (for 1-based Group indices) */ + char reserved[48]; /* for future use */ }; /* MIDI version numbers in client info */ |