Re: [Rhythmbox-devel] Python Plugin-LED Cube Visualizations

[EmbeddedMicro <justin embeddedmicro com>]

Thanks a lot for that example!

However when I run it I get the error.

  File "/home/justin/.gnome2/rhythmbox/plugins/cube/led-cube.py", line 24,
in filter_inserted
    p.get_bus().connect('message', self.on_message)
AttributeError: 'NoneType' object has no attribute 'connect'



Jonathan Matthew-4 wrote:
> 
> On Sun, Apr 26, 2009 at 03:47:48PM -0700, EmbeddedMicro wrote:
>> 
>> I under stand this a bit more. I read up on the spectrum element, but I
>> can't
>> figure out how to get the messages it sends out. This is what I have now,
>> it
>> does not work. 
>>
>> > ... 
>> 
>> Is the bus stuff even remotely correct? 
> 
> Not really, but the main problem was that there was no way for plugins
> to attach message handlers to the bus.  I've just committed a small change
> to make the bus emit the 'message' signals you were trying to use
> (commit 535c2437).
> 
> Other things:  it's easier to use the 'filter' interface for this, as you
> don't have to create a sink element too; you need to wait for the
> filter/tee to
> actually be added to the pipeline, using the 'filter-inserted' signal; and
> you
> need to walk up the pipeline structure to find the top level bus to
> process
> messages
> 
> Here's a simple plugin that adds a spectrum element into the pipeline and
> prints the data (note that you need to run rhythmbox with '-D py' for
> python
> print statements to show up): 
> http://www.gnome.org/~jmatthew/filterdemo.py
> 
> 
> _______________________________________________
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> http://mail.gnome.org/mailman/listinfo/rhythmbox-devel
> 
> 

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