[PD] [PD-dev] midiout / sysex on windows

[Georg Werner]

hi,

i made an abstraction [sysexout] ;) - but i dont have hardware here to 
test it. so please do.
g.


Martin Peach:
> Yes, why not just send a list though?
> 
> It seems that in WinXP [midiout] sends 247(start sysex) followed by 
> 240(end sysex), the intervening message doesn't get transmitted. Also if 
240 and 247 are in the wrong order here according to the previous 
messages ...

> the message contains numbers > 127 then more bytes get transmitted, not 
> good.
> 
> Also as lists seem to be easier to generate than comma separated 
> messages, and a list already has its buffer allocated, there is no need 
> to reserve  1000 or so bytes just in case. Maybe someone should add a 
> list method to [midiout]?
> 
> Maybe rename it to [sysexout] and skip the need to put 247 and 240 in
> every message...
> 
> Martin
> 
> 
> cyrille henry wrote:
>>
>>
>> martin.peach at sympatico.ca a écrit :
>>> On linux with alsa midi, sysex output works this way:
>>>
>>> bang
>>> |
>>> [t    b     b    b    b]
>>> |     |     |    | [247( [123( [88( [240(
>>> |_____|_____|____|
>>> | |
>>> [midiout]
>>
>> this is the same than :
>> [240, 88, 123, 247(
>> (with coma)
>>
>> c
>>
>>>
>>> That is, banging all the values separately into [midiout] during one 
>>> message time slot.
>>> (Note the message is written backwards since the first byte to 
>>> transmit is the sysex status byte, 240)
>>> Banging them in one at a time manually only sends one byte, banging 
>>> them in as a list stops [midiout] from working until you reopen the 
>>> patch.
>>>
>>> Martin
>>>
>>>                            
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>>
>>
> 
> 
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