[LAU] Jack transport - was - Ardour/Muse Jack tempo lock

[Len Ovens]

On Sun, 10 Aug 2014, Tim E. Real wrote:

> On August 10, 2014 09:24:12 AM Len Ovens wrote:
>>
>> Is there a record enable in there? It seems to me it would be worthwhile
>
> Mm, no such signal in the Jack Transport API that I know of.
>
> But there are Midi commands for such things like play stop record etc,
> some of which MusE does recognize, but some are waiting to be added.
> Not sure about the full 'record' family of Midi commands, must check
> which have been added... I think basic record start and stop are supported.

Ya midi is there, one way or another. Most Applications that support 
recording "something" and jack sync/transport also support punch in/out 
via a midi controler.

MMC is supposed to be real time as well. I do not know the right answer. 
In my case I am making software for a midi control surface, but because 
the "midi" is generated after the signals get into the computer, I am also 
able to use the control surface to control jack transport directly (in 
fact that was easier than sending jack MIDI). From that point of view, 
having a record start would be an ideal global solution. Also, there is 
some software (the non-* group stands out in my mind) that does not have 
MIDI in for control purposes, but reacts to jack transport very nicely. 
One of the sub projects of this software is to split the computer keyboard 
so that the numeric keypad can be used as a midi/jacktransport control 
surface while the rest works as the system keyboard still, so I have an 
interest in a more complete jack transport from that POV. However, I am 
now using either and/or as the user sees fit. One way or another it will 
get done. It seems some controlers just send whatever midi note on is next 
on the table for record enable. However I am less worried about that 
because each key/switch can send a user set midi string/event. I will 
provide some preset ideas that seem useful to me.


--
Len Ovens
www.ovenwerks.net