midi realtime events

midi realtime events

[Dirk Jagdmann]

Hallo developers,

I'd like to send those MIDI realtime events (start, stop, cont etc.) via 
the ALSA sequencer API, but I don't know which function or macro to use 
to submit them to the sequencer.

-- 
---> Dirk Jagdmann ^ doj / cubic
----> http://cubic.org/~doj
-----> http://llg.cubic.org

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Re: midi realtime events

[Takashi Iwai]

At Mon, 31 Jul 2006 14:05:50 +0200,
Dirk Jagdmann wrote:
> 
> Hallo developers,
> 
> I'd like to send those MIDI realtime events (start, stop, cont etc.) via 
> the ALSA sequencer API, but I don't know which function or macro to use 
> to submit them to the sequencer.

Just send a normal event packet with the type such as
SND_SEQ_EVENT_START to the destination.  It you need to pass directly
to the destination without scheduling, set direct mode
(snd_seq_ev_set_direct()).

Note that this event is used to control the timer, too.  For example,
stopping the running timer queue, you send an event SND_SEQ_EVENT_STOP
with snd_seq_ev_queue_control_t data (with the given queue id) to the
system timer port (0:0).


Takashi

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