On Sat, Aug 27, 2011 at 12:18 AM, Daniel Mack zonque@gmail.com wrote:

On Fri, Aug 26, 2011 at 4:06 PM, Grant Diffey gdiffey@gmail.com wrote:

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On Fri, Aug 26, 2011 at 11:43 PM, Daniel Mack zonque@gmail.com wrote:

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Can you try to just open either the playback or the capture stream seperately, and not both at the same time?

So...

nevyn@cetacea:~/linux/linux$ aplay -D plughw:Ultra /usr/share/sounds/KDE_Startup_new.wav Playing WAVE '/usr/share/sounds/KDE_Startup_new.wav' : Signed 16 bit

Little

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Endian, Rate 22050 Hz, Stereo aplay: set_params:1123: Unable to install hw params:

Hmm? Strange, that worked for me. Does re-plugging the device help maybe? I can look into this deeper next week.

The patch I sent out was also merely meant to be a base for discussion about whether the whole approach is sane, or just a result of my head thinking about it for too long :)

Daniel

So I've just tested again being more awake and yes replugging the device fixes it.

With regard to the open record while streaming stuff maybe a stream pool would be a way to aproach it? so you open all the endpoints always and just dump the data unless there's a pcm stream to attach to but I'm probably way off.

Grant.