> > > The problem as I see it is that the ALSA OSS emulation does not send this > > > TMR_WAIT_ABS event - it only sends the NOTEON event. Jazz gets this and > > > without any TMR_WAIT_ABS to tell it otherwise, assumes that it occured at > > > the "current" time - which is always a multiple of 48 ticks. > > > > does the attached patch cure? > > : > > diff -u -r1.8 seq_oss_midi.c > > --- alsa-kernel/core/seq/oss/seq_oss_midi.c 12 Mar 2003 11:26:20 -0000 1.8 > > +++ alsa-kernel/core/seq/oss/seq_oss_midi.c 26 Mar 2003 17:51:31 -0000 > > @@ -593,6 +593,7 @@ > > break; > > } > > > > + snd_seq_oss_readq_put_timestamp(dp->readq, ev->time.tick, dp->seq_mode); > > snd_seq_oss_readq_put_event(dp->readq, &ossev); > > > > return 0; > > > Ok. Last night I investigated ev->time.tick. Admittedly this was under > 0.90rc8b. It transpires that ev->time.tick is *always* zero when the event > is a NOTEON/NOTEOF, and therefore gives no timing information what-so-ever. > Thus the above patch does *not* fix the problem, at least under 0.90rc8b.
Over the weekend I tested this patch against ALSA 0.9.2 release. The patch DOES fix the problem under this version of ALSA - so obviously the sequencer changes since 0.9.0rc8b have rectified the problems with ev->time.tick. This is a good development - it means I can run a single sound driver now rather than having to switch between ALSA and OSS depending on what I need to do at the time. So to confirm: the above patch fixes the input event timing when using ALSA OSS sequencer (/dev/sequencer2) emulation. Best regards jonathan -- * Jonathan Woithe [EMAIL PROTECTED] * * http://www.physics.adelaide.edu.au/~jwoithe * ***-----------------------------------------------------------------------*** ** "Time is an illusion; lunchtime doubly so" ** * "...you wouldn't recognize a subtle plan if it painted itself purple and * * danced naked on a harpsichord singing 'subtle plans are here again'" * ------------------------------------------------------- This SF.net email is sponsored by: The Definitive IT and Networking Event. Be There! NetWorld+Interop Las Vegas 2003 -- Register today! http://ads.sourceforge.net/cgi-bin/redirect.pl?keyn0001en _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
