qmidiarp-devel

[Qmidiarp-devel] Further testing

[Brendan J. <bre...@gm...>]

Hi guys

I have been playing around with the git version from yesterday.

I have experienced some unusual behaviour with jack transport. 
Occasionally playback will cease after stopping and starting. I'll 
outline my setup:

  - I have both jackctlmmc and a2jmidi daemons queued to start after 
jackd starts.
  - Qmidiarp in jack transport mode
  - I have a midi controller sending transport messages to jackctlmmc 
Jack midi port
  - midi controller also sends input to a Qmidiarp sequencer
  - seq24 sequencer with jack as transport master (midi out to hydrogen)
  - Qmidiarp output port to either/and yoshimi / hardware synth

Two issues I have noticed

1 - if I rapidly stop start jack transport via the controller 
occasionally qmidiarp will only play the first note and playback will stop
2 - if I have set the midi sequencer to retrigger on input occasionally 
playback will stop - however subsequent note velocity input can be seen 
to update the GUI

In the first instance stopping and starting transport will cause the 
playback to continue

In the second its not immediately apparent how I can restart playback - 
usually a combination of turning off jack transport / stopping / 
starting / stopping Qmidiarp and re-enabling jack transport.

In all cases seq24 receives and acts on transport messages correctly.

Anyway - I hope this is clear. Let me know if there is anything else you 
need.

regards,

Brendan

[Qmidiarp-devel] Re : Further testing

[Frank K. <goe...@ya...>]

Hi Brendan,



----- Mail original -----
> De : Brendan Jones <bre...@gm...>
> À : qmi...@li...
> Cc : 
> Envoyé le : Mardi 7 Juin 2011 3h02
> Objet : [Qmidiarp-devel] Further testing
> 
> Hi guys
> 
> I have been playing around with the git version from yesterday.
> 
> I have experienced some unusual behaviour with jack transport. 
> Occasionally playback will cease after stopping and starting. I'll 
> outline my setup:
> 
>   - I have both jackctlmmc and a2jmidi daemons queued to start after 
> jackd starts.
>   - Qmidiarp in jack transport mode
>   - I have a midi controller sending transport messages to jackctlmmc 
> Jack midi port
>   - midi controller also sends input to a Qmidiarp sequencer
>   - seq24 sequencer with jack as transport master (midi out to hydrogen)
>   - Qmidiarp output port to either/and yoshimi / hardware synth
> 
> Two issues I have noticed
> 
> 1 - if I rapidly stop start jack transport via the controller 
> occasionally qmidiarp will only play the first note and playback will stop
> 2 - if I have set the midi sequencer to retrigger on input occasionally 
> playback will stop - however subsequent note velocity input can be seen 
> to update the GUI
> 
> In the first instance stopping and starting transport will cause the 
> playback to continue

There are some changes on git which _might_ improve (1), at least reaction to transport start and stop should now be faster. Could you try with the current git ?

(2) is something I don't get here so it probably didn't change for this issue.

Thanks for the feedback

Cheers
Frank