From: Clemens Ladisch <clemens@ladisch.de>
To: "Ujfalusi, Peter" <peter.ujfalusi@ti.com>
Cc: Edgar Berdahl <eberdahl@ccrma.stanford.edu>, alsa-devel@alsa-project.org
Subject: Re: TWL4030 low-latency
Date: Mon, 17 Oct 2011 13:23:47 +0200 [thread overview]
Message-ID: <4E9C1043.6050804@ladisch.de> (raw)
In-Reply-To: <CAPo=G1zpT9wupMnpWBcxEu6iK9vr=EdrkKLMuHkpk7kyBCUMXw@mail.gmail.com>
Ujfalusi, Peter wrote:
> BTW: PA also have 'real time' mode which basically means that it is
> using the kernel scheduling
> for audio timing.
That mode isn't called 'real time' and has nothing to do with real time.
It just uses the kernel timer instead of the sound card clock so that
it can be woken up in irregular intervals. This mode doesn't work so
well if the sound card doesn't allow to read the current sample position
precisely (many embedded DMA controllers have this problem).
Regards,
Clemens
next prev parent reply other threads:[~2011-10-17 11:23 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-14 18:24 TWL4030 low-latency Edgar Berdahl
2011-10-14 19:45 ` Ujfalusi, Peter
2011-10-15 20:28 ` Gabriel M. Beddingfield
2011-10-17 1:39 ` Edgar Berdahl
2011-10-17 5:12 ` Ujfalusi, Peter
2011-10-17 11:23 ` Clemens Ladisch [this message]
2012-01-04 18:35 ` Jacinto Alvarez
2012-01-09 12:32 ` Peter Ujfalusi
[not found] ` <CA+fpFZ9-QQ=5uihMfjCQaJBMYeq3QBHMgmYAW3DBQHQTAwK1gw@mail.gmail.com>
2012-02-14 7:46 ` Peter Ujfalusi
2011-10-25 0:21 ` Edgar Berdahl
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