Re: Direct Delivery of NoteOn events

["Clemens Ladisch" <cladisch@fastmail.net>]

paul santa clara wrote:
> I am having difficulty getting alsa to actually delivery a noteon
> event for me.  I am came across a list posting from 2004 which
> claimed that Queue's were necessary for NoteOn's to allow alsa to
> schedule the concomitant Noteoff at the appropriate time.

This applies only to note events, not to note on events.
Note events are split into a note on and a note off event.

> Nevertheless, i can find nothing in the documentation which
> collaborates this.

Well, there is no documentation ...

> Still, i did attempt to use to a Q but was unable  
> to produce any results.  Here is the offending code:
> ...
> snd_seq_ev_set_direct( &event );

You shouldn't use this when using a queue. (However, the following
call to snd_seq_ev_schedule_tick() will correct this.)

> int queue = snd_seq_alloc_queue( our_parcel->seq );

You must create the queue before you try to send events through it.


HTH
Clemens

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