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| author | Takashi Iwai <tiwai@suse.de> | 2024-04-19 12:11:02 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2024-04-19 12:11:47 +0200 |
| commit | 32cb23a0f911317cdb5030035e49a204aa86fef5 (patch) | |
| tree | 0db0e1a28580f428d10e17ad2f7557958fce73eb /sound/core | |
| parent | 3e2f2235b526e0238d4c77fe3396bc6308c5426b (diff) | |
| download | linux-stable-32cb23a0f911317cdb5030035e49a204aa86fef5.tar.gz linux-stable-32cb23a0f911317cdb5030035e49a204aa86fef5.tar.bz2 linux-stable-32cb23a0f911317cdb5030035e49a204aa86fef5.zip | |
ALSA: seq: dummy: Allow UMP conversion
Although the purpose of dummy seq client is a direct pass-through,
it's sometimes helpful for debugging if it can convert to a certain
UMP MIDI version. This patch adds an option to specify the UMP event
conversion. As default, it skips the conversion and does
passthrough, while user can pass ump=1 or ump=2 to enforce the
conversion to UMP MIDI1 or MIDI2 format.
Message-ID: <20240419101105.15571-1-tiwai@suse.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/seq/seq_dummy.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/sound/core/seq/seq_dummy.c b/sound/core/seq/seq_dummy.c index 9308194b2d9a..783fc72c2ef6 100644 --- a/sound/core/seq/seq_dummy.c +++ b/sound/core/seq/seq_dummy.c @@ -58,6 +58,12 @@ MODULE_PARM_DESC(ports, "number of ports to be created"); module_param(duplex, bool, 0444); MODULE_PARM_DESC(duplex, "create DUPLEX ports"); +#if IS_ENABLED(CONFIG_SND_SEQ_UMP) +static int ump; +module_param(ump, int, 0444); +MODULE_PARM_DESC(ump, "UMP conversion (0: no convert, 1: MIDI 1.0, 2: MIDI 2.0)"); +#endif + struct snd_seq_dummy_port { int client; int port; @@ -152,7 +158,9 @@ static int __init register_client(void) { struct snd_seq_dummy_port *rec1, *rec2; +#if IS_ENABLED(CONFIG_SND_SEQ_UMP) struct snd_seq_client *client; +#endif int i; if (ports < 1) { @@ -166,12 +174,24 @@ register_client(void) if (my_client < 0) return my_client; - /* don't convert events but just pass-through */ +#if IS_ENABLED(CONFIG_SND_SEQ_UMP) client = snd_seq_kernel_client_get(my_client); if (!client) return -EINVAL; - client->filter = SNDRV_SEQ_FILTER_NO_CONVERT; + switch (ump) { + case 1: + client->midi_version = SNDRV_SEQ_CLIENT_UMP_MIDI_1_0; + break; + case 2: + client->midi_version = SNDRV_SEQ_CLIENT_UMP_MIDI_2_0; + break; + default: + /* don't convert events but just pass-through */ + client->filter = SNDRV_SEQ_FILTER_NO_CONVERT; + break; + } snd_seq_kernel_client_put(client); +#endif /* create ports */ for (i = 0; i < ports; i++) { |