Greetings:

  I've started playing with -+rtaudio=jack. I'm testing via blue, using 
Steven's feldman2.csd.

  I start JACK with QJackCtl, then I start the JACK Rack LADSPA plugin 
host. JACK Rack appears in the QJackCtl audio connections panel. I 
connect it to the ALSA PCM output device. I open and enable a plate 
reverb plugin in the JACK Rack, then I run the CSD file from blue with 
these command options:

        csound -+rtaudio=jack --expression-opt -odac:jack_rack_2960:in_ 
-d -m0

  This autoconnects Cs5 to the JACK Rack, which is connected to the ALSA 
PCM audio input, and everything works fine.

  QJackCtl allows client/port alias editing, so I renamed the client to 
jrack and the ports to in1 and in2.  I shortened the command above to this:

        csound -+rtaudio=jack --expression-opt -odac:jrack:in -d -m0

  But Csound responded with this error message:

        writing 2048-byte blks of shorts to dac:jrack:in
         (unknown)
        SECTION 1:
        Allocating 262436 bytes
        ftable 1:
         *** jackClientActivate(): cannot connect csound5:output1 to 
jrack:in1
         *** real time audio output stopped
        [snip]

  Perhaps the aliases are only cosmetic to QJackCtl ? If so, too bad: 
When combined with $CSRTAUDIO I could significantly shorten my command 
options.

  Still, this is all very cool.

Best,

dp






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Dave Phillips wrote:

>        csound -+rtaudio=jack --expression-opt -odac:jrack:in -d -m0
> 
>  But Csound responded with this error message:
> 
>        writing 2048-byte blks of shorts to dac:jrack:in
>         (unknown)
>        SECTION 1:
>        Allocating 262436 bytes
>        ftable 1:
>         *** jackClientActivate(): cannot connect csound5:output1 to jrack:in1
>         *** real time audio output stopped

Does jack_lsp list the port jrack:in1 ?


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Hi Istvan:

  No, it reports it as jack_rack_[pid]:in_1.

Best,

dp



Istvan Varga wrote:

> Dave Phillips wrote:
>
>>        csound -+rtaudio=jack --expression-opt -odac:jrack:in -d -m0
>>
>>  But Csound responded with this error message:
>>
>>        writing 2048-byte blks of shorts to dac:jrack:in
>>         (unknown)
>>        SECTION 1:
>>        Allocating 262436 bytes
>>        ftable 1:
>>         *** jackClientActivate(): cannot connect csound5:output1 to 
>> jrack:in1
>>         *** real time audio output stopped
>
>
> Does jack_lsp list the port jrack:in1 ?
>
>
> -------------------------------------------------------
> SF email is sponsored by - The IT Product Guide
> Read honest & candid reviews on hundreds of IT Products from real users.
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>
>   Perhaps the aliases are only cosmetic to QJackCtl ?

Yeah, you got it :)
-- 
rncbc aka Rui Nuno Capela
rncbc@rncbc.org






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