From: Takashi Iwai <tiwai@suse.de>
To: Tim Blechmann <tim@klingt.org>
Cc: alsa-devel@alsa-project.org
Subject: Re: pointer callback question
Date: Fri, 13 Feb 2009 07:26:24 +0100 [thread overview]
Message-ID: <s5h3aeiettb.wl%tiwai@suse.de> (raw)
In-Reply-To: <4994649A.8080005@klingt.org>
At Thu, 12 Feb 2009 19:04:10 +0100,
Tim Blechmann wrote:
>
> Takashi Iwai wrote:
> > At Thu, 12 Feb 2009 18:55:49 +0100,
> > Tim Blechmann wrote:
> >>>> the brief log is (4 periods of 64 frames):
> >>>> stream_pointer at 64
> >>>> stream_pointer at 128
> >>>> stream_pointer at 192
> >>>> stream_pointer at 256
> >>> This is invalid. The pointer callback must return 0 in this case.
> >>> The value the pointer callback returns is between 0 and buffer_size-1.
> >> sry, typo, 5 periods of 64 frames
> >
> > Then it must be OK. If the stream is stopped, it's likely by the
> > buffer underrun detection or so...
>
> is there any way to compile alsa to get some debugging information about
> that?
Did you enable CONFIG_SND_DEBUG=y and others?
Takashi
next prev parent reply other threads:[~2009-02-13 6:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-12 17:50 pointer callback question Tim Blechmann
2009-02-12 17:54 ` Takashi Iwai
2009-02-12 17:55 ` Tim Blechmann
2009-02-12 17:58 ` Takashi Iwai
2009-02-12 18:04 ` Tim Blechmann
2009-02-13 6:26 ` Takashi Iwai [this message]
2009-02-26 14:44 ` Tim Blechmann
2009-02-28 12:48 ` Tim Blechmann
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