Re: MIDI (was Re: [Denemo-devel] Anacrusis script needed)

[Jeremiah Benham]

On Sep 16, 2009, at 10:25 AM, Richard Shann <address@hidden>  
wrote:

> On Wed, 2009-09-16 at 09:03 -0500, Jeremiah Benham wrote:
> > On Wed, 2009-09-16 at 13:51 +0100, Richard Shann wrote:
> > > On Wed, 2009-09-16 at 07:50 -0500, Jeremiah Benham wrote:
> > > > > What is this "transport" thing?
> > > >
> > > > Jack transport is used to sync software timing. A user can sync  
> > > > it to
> > > > a multitude of things. Theoretically a user can user denemo and
> > > > xjadeo[1] to produce film scores. xjadeo is a simple video player  
> > > > that
> > > > is controlled via midi MTC or jack transport. When the user has
> > > > transport enabled in their denemo preferences all she has to do is
> > > > hit play and the video will start rolling.
> > > With the current denemo code, what actually happens if you have
> > > transport enabled in your denemo preferences? You hit play in  
> > > denemo,
> > > and what should be happening?
> >
> > Nothing happens if you don't have a jack transport slave running. I  
> > just
> > tested it out and it seems to work fine. I wrote a little blues  
> > riff in
> > denemo and then launched hydrogen (drum machine software). I set the
> > tempo in hydrogen to match denemos tempo.
> Is this needed because we have something missing in denemo at the
> moment?

I don't know. From tutorials I have read about other software the  
tempo had to be set the same in both. Maybe Nils can confirm this.

> > Then I pressed play in denemo.
> So I guess this sends a message to JACK telling any clients in
> "transport slave mode" to start?


That is correct.

> I notice another bit of code, to do
> with stopping...

It is probably the code to stop the transport. This way the slave will  
stop when you hit stop in denemo.

Jeremiah

> Richard
>
>
>
>
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