From mboxrd@z Thu Jan  1 00:00:00 1970
From: Clemens Ladisch <clemens@ladisch.de>
Subject: Re: Non-blocking snd_pcm_drain?
Date: Sat, 10 Nov 2012 18:28:45 +0100
Message-ID: <509E8ECD.7080205@ladisch.de>
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To: Daniel Sanz <daniellsanz2@gmail.com>
Cc: alsa-devel@alsa-project.org
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Daniel Sanz wrote:
> I noticed that the snd_pcm_drain call blocks until the buffer is
> completely drained. Is there any way to drain the buffer without
> a block?

Try calling snd_pcm_nonblock(handle, 1).

> I've tried calling snd_pcm_nonblock(handle, 1) before the call to
> snd_pcm_drain but it does not work.

How so?

> The context is that this is an application that plays a particular WAV
> sound repeatedly, so I don't want to wait until the sound is played
> completely before it is played again.

Then why do you drain at all?  Just write the new data into the buffer.


Regards,
Clemens