Re: [AD] Further MIDI fix

[Ben Davis <bnd25@xxxxxxxxxx>]

Is there any reason why we can't do a simple MIDI reset?

In a conventional MIDI set-up, the synthesisers will respond to a single 0xFF 
byte as a MIDI reset command; everything will be reset. However, .mid files 
redefine 0xFF as introducing meta-events that need to be processed inside the 
sequencer (e.g. tempo changes).

I haven't looked at how Allegro handles the distinction, but I would suggest a 
'MIDI reset' feature is important. It could send an 0xFF to the actual MIDI 
device, or, in the case of DIGMID, go systematically through all the 
variables and reset them.

Ref: http://www.borg.com/~jglatt/tech/miditech.htm

Ben

On Wednesday 19 May 2004 22:48, Chris Jones wrote:
> I hate to be pushy, but any progress on whether this patch is accepted or
> rejected?
>
> > You may remember that about a year ago now a MIDI fix was added to
>
> Allegro,
>
> > to use the All Sound Off command when a tune ended.
> >
> > However, there are still some residual issues if a controller was in use
> > (eg. sustain) since these are not cancelled at the end of one song and
> > can affect the next one.
> >
> > The proposed fix is to the reset_controllers method in midi.c:
> >
> >    if (midi_driver->raw_midi) {
> >       midi_driver->raw_midi(0xB0+channel);
> >       midi_driver->raw_midi(10);
> >       midi_driver->raw_midi(midi_channel[channel].pan);
> > +      /* All Controllers Off */
> > +      midi_driver->raw_midi(0xB0+channel);
> > +      midi_driver->raw_midi(121);
> > +      midi_driver->raw_midi(0);
> >    }
> >
> > Any opinions?
> >
> > cheers,
> > chris
> >
> >
> >
> >
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