Fwd: [PD] Maximum playback/capture with jack

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Fwd: [PD] Maximum playback/capture with jack

Christoph Kuhr
> Today i had closer look:
>

> I have 26i 26o for the system
> And i have netjack with 24o 2i
> So pd is always limited to 126-78(26+26+24+2)ports no matter in  
> which combination i try ins and outs... Seems to be a jack issue...
>
>
>
>
> Am 29.08.2010 um 17:48 schrieb Pedro Lopes <[hidden email]>:
>
>> I have tried with the pd config, with 40 ins and outs. (see attached
>> image) and works. And I also can run other apps like japa,
>> meterbridge, mocp, whatever.
>>
>> Apparently the thing in jack is:
>> - each application can register as many in/outs as they demand (when
>> you change pd to 40/40) those appear in the qjackctl frontend
>> - there should be a maximum defined somewhere, I couldn't find it
>> easy, must be in jack documentation
>> - for the audio card, jack can only send ins/outs at the max of the
>> audio card true in/out - obviously =P
>>
>> Report if you have any luck.
>>
>> Best regards,
>> Pedro
>>
>> On Sun, Aug 29, 2010 at 4:36 PM, Pedro Lopes  
>> <[hidden email]> wrote:
>>> No my mistake, I was looking at device input channels, so their
>>> directly binded to the soundcard, hence they are not virtual.
>>>
>>> I'm gonna try another workaround...
>>>
>>> On Sun, Aug 29, 2010 at 3:23 PM, Christoph Kuhr <[hidden email]
>>> > wrote:
>>>> which one do you mean?
>>>> i only have it in german...
>>>> there is something like system-input/output ports, but they  
>>>> configure
>>>> alsa, not jack itself ?!?
>>>> and another item max port, which is 256...
>>>>
>>>>
>>>> Am 29.08.2010 16:07, schrieb Pedro Lopes:
>>>>> ahhh.. in qjack there's a setting (qjack > setup) for max input  
>>>>> and
>>>>> output ports, if you tell him nothing its running "default"  
>>>>> which is
>>>>> probably the values you reported.
>>>>>
>>>>> On Sun, Aug 29, 2010 at 3:00 PM, Christoph Kuhr <[hidden email]
>>>>> > wrote:
>>>>>
>>>>>> Yes, i did so too...
>>>>>> It seems to me, that jack is limited on his total ports...
>>>>>> netsource 2i 24o
>>>>>> Pd 24i 8o
>>>>>> System 24i 26o
>>>>>>
>>>>>> This is running so far
>>>>>> But any other jack client can connect anymor... Not jack rack,  
>>>>>> not japa
>>>>>> etc...
>>>>>>
>>>>>> Has the number of ports to do with the used bufferlength in any  
>>>>>> way... I
>>>>>> mean do they influence each other?
>>>>>>
>>>>>>
>>>>>>
>>>>>> Am 29.08.2010 um 13:57 schrieb Pedro Lopes <[hidden email]
>>>>>> >:
>>>>>>
>>>>>>
>>>>>>> I've just opened jack (via qjackctl) and pdextended (rt  
>>>>>>> enabled in an
>>>>>>> rt kernel).
>>>>>>>
>>>>>>> It seems to work, I tryed 48 out and in and they all appear on  
>>>>>>> qjack
>>>>>>> frontend GUI, I can connect and route any combination of inputs.
>>>>>>>
>>>>>>> What I did was go to Pd main GUI > media > Audio Settings >  
>>>>>>> and change
>>>>>>> number of channels numberbox to 48 in and same for out.
>>>>>>>
>>>>>>> Have you tryed this way?
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Best regards,
>>>>>>> Pedro
>>>>>>> p.s.: although its working Im testing this in a really lame  
>>>>>>> netbook,
>>>>>>> so It gets all scrambled and slow with so many ins. I can try  
>>>>>>> in my
>>>>>>> laptop and confirm if the aforementioned procedure works too.
>>>>>>> On Sun, Aug 29, 2010 at 10:58 AM, Christoph Kuhr <[hidden email]
>>>>>>> >
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Hi everyone,
>>>>>>>>
>>>>>>>> I have a problem using jack audio...
>>>>>>>>
>>>>>>>> I want puredata to register 48channels of capture and 8 of  
>>>>>>>> playback.
>>>>>>>> But i get only 18channels running.
>>>>>>>> Else pd says:
>>>>>>>> "error: JACK: unable to connect to JACK server
>>>>>>>> JACK: jack returned status 17
>>>>>>>> error: JACK error: cannot deliver port registration request
>>>>>>>> error:JACK: can only register 18 input ports (instead of  
>>>>>>>> requested 48)"
>>>>>>>>
>>>>>>>> Is pd limited to 26 channels IO?
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> [hidden email] mailing list
>>>>>>>> UNSUBSCRIBE and account-management ->
>>>>>>>> http://lists.puredata.info/listinfo/pd-list
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Pedro Lopes (ongoing MSc)
>>>>>>> contact: [hidden email]
>>>>>>> website: http://web.ist.utl.pt/Pedro.Lopes
>>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> Pedro Lopes (ongoing MSc)
>>> contact: [hidden email]
>>> website: http://web.ist.utl.pt/Pedro.Lopes
>>>
>>
>>
>>
>> --
>> Pedro Lopes (ongoing MSc)
>> contact: [hidden email]
>> website: http://web.ist.utl.pt/Pedro.Lopes
>> <ScreenshotJack4040JapaPd.png>

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