From: Clemens Ladisch <clemens@ladisch.de>
To: Guilherme Longo <grlongo.ireland@gmail.com>
Cc: alsa-devel@alsa-project.org
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 [thread overview]
Message-ID: <4A6975E8.2030208@ladisch.de> (raw)
In-Reply-To: <4A6880B0.3000903@gmail.com>
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
prev parent reply other threads:[~2009-07-24 8:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-23 15:24 Is snd_pcm_hw_params_set_period_time_near the same as sampling period? Guilherme Longo
2009-07-24 8:50 ` Clemens Ladisch [this message]
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