[PD] MIDI rt / clock questions and fixes

e skogen eskogen at usfamily.net
Thu Oct 2 06:22:22 CEST 2003


I don't know about the other issues you raised, but I remember Daniel 
Heckenberg's patches were really helpful to me. They fix some NT 
problems with midi sync. (this was back in Pd .36, are these changes 
made in .37 as well?)

see: http://old.iem.at/mailinglists/pd-list/2003-04/003427.html

--eric


Toshinori Ohkouchi wrote:
> Once upon a time I made thats two object for my live performance.
> But at that time midiclikin did not work well cause of jitter.
> And keep compatibility with MAX on Macintosh, 
> They were voided.
> 
> I dont have Linux so it was NT only.
> 
> Sorry my strange English.
> 
> [Larry Troxler ]  wrote at (09/30):- - - - - - - - - - - - - - - -
> 
>>I've got a few questions about the implementation of "midiclkin" and 
>>"midirealtimein".
>>
>>First, there is an error issued that "midirealtimein" doens't work under "NT".
>>Judging from the ifdef, I think that what this error message really is trying 
>>to say is that it doesn't work on "Microsoft Windows version NT". That's well 
>>and good, but I think that, except for a couple of bugs which are OS 
>>independent, that it works ok on Linux as well.  So I suspect that maybe the 
>>ifdef is wrong in this case.
>>
>>Next, the midi realtime object  gets hit for anything >= 0xf8, which means it 
>>grabs midi clocks as well. Usually I don't care much about efficiency and 
>>optimisation, but I wonder if this case if it would have been worth it to 
>>route MIDI clocks to a seperate object.
>>
>>And indeed there is a "midiclikin" object, but it seems to be an orphan, 
>>because it is never called from the midi parser! What the heck is up with  
>>that?
>>
>>Finally, why on earth, in midi_realtimein, does the pd_list call specify "1" 
>>as the list length, instead of "2"??
>>
>>I guess a final issue is why these objects aren't included in the MIDI help 
>>patch, but I guess the reason is that they were experimental.
>>
>>Kinda sad becase with a little debugging I think they could be made to work.
>>
>>Larry
>>
>>
>>
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> 
> 
> 
> end of quote: - - - - - - - - - - - - - - -
> 
> Toshinori Ohkouchi
> ohk at d1.dion.ne.jp
> 
> 
> 
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