From mboxrd@z Thu Jan  1 00:00:00 1970
From: Clemens Ladisch <clemens@ladisch.de>
Subject: Re: Is snd_pcm_hw_params_set_period_time_near the same
 as sampling period?
Date: Fri, 24 Jul 2009 10:50:48 +0200
Message-ID: <4A6975E8.2030208@ladisch.de>
References: <4A6880B0.3000903@gmail.com>
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To: Guilherme Longo <grlongo.ireland@gmail.com>
Cc: alsa-devel@alsa-project.org
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Guilherme Longo wrote:
> I am trying to understand a piece of a code  I am  studing .
> What does exactly the functions snd_pcm_hw_params_set_period_time_near  
> sets?

The period time.

> In my understand period time should be the time between 2 consecutive 
> samples,

In ALSA, a period is the interval between consecutive interrupts from
the sound card; this is the same as a fragment in OSS.

When the application tries to write/read more than than would be
available, ALSA waits until the next period boundary before checking
again.


HTH
Clemens