Re: [Discuss-gnuradio] audio_alsa_sink problem

[Josh Blum]

I will add a note to the documentation in grc audio blocks about plughw.

Can you edit the generated code and test the following 2 combinations:

self.audio_sink_0 = audio.sink(44100, "plughw:0,0", False)
self.audio_sink_0 = audio.sink(44100, "plughw:0,0")

Let me know. -Josh

Arto Oksanen wrote:
> this is from the working dial_tone.py
>
> dst = audio.sink (sample_rate, options.audio_output)
>
> and this is from GRC generated code:
>
> self.audio_sink_0 = audio.sink(44100, "plughw:0,0", True)
>
> For me it looks like the generated code has an extra parameter..
>
> arto
>
> 2009/3/2 Josh Blum <address@hidden>:
> > The audio sink in GRC has 3 parameters:
> >        sample_rate, device_name, ok_to_block
> >
> > The generated code looks like this:
> >        audio.sink(sample_rate, device_name, ok_to_block)
> >
> > If entering plughw:0,0 for the device_name does not fix the problem, I am
> > unsure about what is wrong... GRC generates the code, we can always compare
> > this to the code in a working example.
> >
> > Is the GRC block missing an extra (4th) parameter to audio.sink?
> >
> > -Josh
> >
> > davek wrote:
> > > im having the same problem
> > > dial tone in GRC crashes with the same error
> > > but the python dialtone example works fine
> > > running svn trunk on ubuntu 8.10 64bit standard install with a
> > > gigabyte ga-ep45-ud3r onboard audio...
> > > if you figure it out let me know...
> > > thanks..
> > >
> > >
> > > On Sun, Mar 1, 2009 at 4:29 PM, Arto Oksanen <address@hidden>
> > > wrote:
> > > > Using plughw:0,0 does not change anything. The error is the same.
> > > >
> > > > arto
> > > >
> > > > 2009/3/1 Eric Blossom <address@hidden>:
> > > > > On Sun, Mar 01, 2009 at 09:38:31PM +0200, Arto Oksanen wrote:
> > > > > > When trying to use audio sink in GRC I get following error:
> > > > > >
> > > > > > audio: using audio_alsa
> > > > > > audio_alsa_sink[hw:0,0]: set_period_time_near failed: Invalid argument
> > > > > > Traceback (most recent call last):
> > > > > >  File "/home/gr/top_block.py", line 45, in <module>
> > > > > >    tb = top_block()
> > > > > >  File "/home/gr/top_block.py", line 32, in __init__
> > > > > >    self.audio_sink_0 = audio.sink(44100, "", True)
> > > > > >  File
> > > > > > "/usr/local/lib64/python2.5/site-packages/gnuradio/audio_alsa.py",
> > > > > > line 307, in sink
> > > > > >    return _audio_alsa.sink(*args, **kwargs)
> > > > > > RuntimeError: audio_alsa_sink
> > > > > >
> > > > > >
> > > > > > The audio test samples in gnuradio-examples/python/audio do work with
> > > > > > no problems.
> > > > > >
> > > > > > I tried to google for further information, but found only the archive
> > > > > > of this mail list suggesting to search the net for the solution. Looks
> > > > > > like a recursive solution for me. :-)
> > > > > Thanks for searching first!
> > > > >
> > > > > > I am new to gnuradio stuff so it may well be my ignorance causing
> > > > > > this, but I can not find any tutorials or manuals or documentation
> > > > > > especially for the GRC.
> > > > > I've seen the error before (but not on my h/w).  Can you try using
> > > > > plughw:0,0 instead of hw:0,0 and see if that changes anything?
> > > > >
> > > > > Eric
> > > >
> > > > --
> > > > Arto Oksanen
> > > > address@hidden
> > > > Muurame, Finland
> > > >
> > > >
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