Sebastian Parborg wrote: > I'm trying to convert the old midi oss3 driver in dosbox so that you > can use it with oss4 as you can see in this thread over at the dosbox > forums: > http://vogons.zetafleet.com/viewtopic.php?t=21638 > I've got it to work but I have a problem with note skipping and such. > So I had to do a "usleep(2);" to get rid of it. However I do realise > that this in not the optimal way of doing it. > So I try to use MIDI_MODE_TIMED > (http://manuals.opensound.com/developer/SNDCTL_MIDI_SETMODE.htm) > instead so I can ditch usleep. But I can't get it to work! I use the > ioctl call but it says that there is no such device :S The timed mode feature is not functional yet so there is no point in trying to use it. This feature may (or may not) get finished in future OSS versions. However it looks like the number of users who want to use MIDI under Linux/Unix is so marginal that doing any work on it is just waste of time.
I think using usleep() or select/poll with timeout may actually be the right way to do MIDI. Current kernels (Linux at least) are very responsive in particular if (HZ >= 1000). In theory a kernel space sequencer based on hardware timer interrupts could provide slightly smaller timing jitter but how slightly? Best regards, Hannu _______________________________________________ oss-devel mailing list oss-devel@mailman.opensound.com http://mailman.opensound.com/mailman/listinfo/oss-devel
