On Wed, 27 Aug 2008 13:57:36 -0700
"ext Steve Sakoman" <[EMAIL PROTECTED]> wrote:

> So substream goes null sometime after the SNDRV_PCM_IOCTL_START but
> before SNDRV_PCM_IOCTL_PVERSION .  I believe that those calls are
> generated by the following code in alsa-lib's
> snd_pcm_direct_initialize_slave function in src/pcm/pcm_direct.c:
> 
It's also worth to check are there other fields than substream which get
zeroed in pcm_file structure. I don't know does it help but worth to
check probably.


Jarkko
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