Assertion `!snd_interval_empty(i)' failed

Assertion `!snd_interval_empty(i)' failed

[Garrett Kajmowicz]

I am working on software designed for VOIP, but it dynamically changes sample 
rates and so forth on the fly.  So prior to doing a  snd_pcm_readi, I check 
to see if I need to change any parameters.  If so I used the existing 
hw_params object and apply the required changes to sample rate, data type, 
etc.

I then call pcm_drop to close the pcm device, followed by 
snd_pcm_hw_params(pcm_handle, hwparams) which should properly apply the 
configuration.  Instead I get:

interval.c:108: snd_interval_refine_min: Assertion `!snd_interval_empty(i)' 
failed.
Aborted

How do I go about fixing this problem?

Garrett Kajmowicz
gkajmowi@tbaytel.net



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Re: Assertion `!snd_interval_empty(i)' failed

[Takashi Iwai]

At Fri, 11 Jul 2003 16:18:14 -0400,
Garrett Kajmowicz wrote:
> 
> I am working on software designed for VOIP, but it dynamically changes sample 
> rates and so forth on the fly.  So prior to doing a  snd_pcm_readi, I check 
> to see if I need to change any parameters.  If so I used the existing 
> hw_params object and apply the required changes to sample rate, data type, 
> etc.
> 
> I then call pcm_drop to close the pcm device, followed by 
> snd_pcm_hw_params(pcm_handle, hwparams) which should properly apply the 
> configuration.  Instead I get:
> 
> interval.c:108: snd_interval_refine_min: Assertion `!snd_interval_empty(i)' 
> failed.
> Aborted
> 
> How do I go about fixing this problem?

that means a parameter (perhaps sample rate?) has no valid value in
the configuration space.
you should check whether the sample rate you pass is supported by the
hardware, or try to use *_near() function to set the nearest
parameter.


Takashi


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