From 32cb23a0f911317cdb5030035e49a204aa86fef5 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 19 Apr 2024 12:11:02 +0200 Subject: 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 --- sound/core/seq/seq_dummy.c | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) (limited to 'sound/core') 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++) { -- cgit v1.2.3