[CLAM] multiple ports

[Dirk Griffioen]

Hi All,

Attached you will find a patch for giving AudioSource and AudioSink 
multiple ports.

I tested it manually and ran the testsuite (there is a second patch for 
the testsuite).

There is one caveat: it does not seem possible to retain the old naming 
scheme when loading from a .clamnetwork file where a port has the name 
AudioIn or AudioOut; instead, they're now numbered (source/sinkname.number):

AudioSource.0
AudioSource.1
... etc

In the jack connections the dot becomes an underscore (AudioSource_1 ... 
etc).

So the clamnetworks need to be updated - attached you will find an 
commandfile for the clamrefactor.py script.

The reason for the namechange is that ports are constructed with a name 
which should match with the name in the xml file, but at construcion 
time this name from the xml file is not known. This went ok because the 
code always had 'AudioIn/Out' and this always matched with the xml file, 
as there was but one port and one portname for a source or sink.

An alternative might be to create 'unnamed' ports (add a constructor, 
the default arguments are in the way), add a 'setname' function to the 
port and then call this when the xml is loaded. But it seems to me this 
would add a lot of complexity.

When there is only 1 port in the source/sink, the jackport is named 
after the source/sink so when you have meaningfull names in your 
clamnetworks, these show in the jack connection viewer.

I tested it and it looks good, but as I am new to CLAM I might missed 
(obvious) things; so please review.

Best, Dirk










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