[linux-audio-dev] Two / Three HDSPM Cards?

[Joachim Deguara]

Hi, thre Madi cards in one PC is a great idea.  But the real trick is 
getting the CPU to process 192 ins onto 192 outs!

I also saw the typo and I hate hand generating long lists of incremented 
values, which is quite error prone.  So I wrote a script (attached).  I 
tried it out with our Madi cards.  By experementing I have found that 
multi card works with <= 32 channels per card for two cards!! So max of 
64 in/outs.  where is this from ?! I had increased the max port count to 
256 but that didn't help.

-joachim

Clemens Ladisch wrote:
> Audio Developer wrote:
> 
>>      bindings.112.slave b;
>>      bindings.112.channel 56;
> 
> 
> This is the 113th channel.
> 
> 
>> pcm.hdspm_112 {
>>      type multi;
>>      slaves.a.pcm hdspm_0;
>>      slaves.a.channels 56;
>>      slaves.b.pcm hdspm_1;
>>      slaves.b.channels 56;
>>      bindings.0.slave a;
>>      bindings.0.channel 0;
>>      bindings.1.slave a;
>>      bindings.1.channel 1;
>>      ...
> 
> 
> The same definition could be written in the following form:
> 
> pcm.hdspm_112 {
> 	type multi
> 	slaves.a {
> 		pcm hdspm_0
> 		channels 56
> 	}
> 	slaves.b {
> 		pcm hdspm_1
> 		channels 56
> 	}
> 	bindings [
> 		{ slave a channel  0 }
> 		{ slave a channel  1 }
> 		{ slave a channel  2 }
> 		...
> 		{ slave a channel 55 }
> 		{ slave b channel  0 }
> 		...
> 		{ slave b channel 55 }
> 	]
> }
> 
> 
> HTH
> Clemens
> 


-- 
Joachim Deguara				Email: dga at idmt.fraunhofer.de
Fraunhofer IDMT, Langewiesener St. 22, 98693 Ilmenau, Germany
Phone: +49 3677/69-4851 		Fax:   +49 3677/69-4399
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