From: "J. Scott Merritt" <alsauser@pragmasoft.com>
To: Takashi Iwai <tiwai@suse.de>
Cc: alsa-devel@alsa-project.org, stevel@embeddedalley.com
Subject: Re: non-interleaved mode
Date: Wed, 11 Jul 2007 09:13:24 -0400 [thread overview]
Message-ID: <20070711091324.43424685.alsauser@pragmasoft.com> (raw)
In-Reply-To: <s5hbqejjphf.wl%tiwai@suse.de>
On Wed, 11 Jul 2007 10:47:56 +0200
Takashi Iwai <tiwai@suse.de> wrote:
> At Tue, 10 Jul 2007 11:08:01 -0700,
> Steve Longerbeam wrote:
> >
> > Hi,
> >
> > The driver for the sound engine I'm working on requires NONINTERLEAVED.
> > Will ALSA core give my driver a full period of left-only samples,
> > followed by a full period of right-only samples? Or are left/right
> > samples split within a single period (ie. first half of period is left
> > samples, second half is right samples)?
>
> The former case. The standard non-interleaved buffer consists of
> (the same buffer-size of) full-length of mono-streams.
>
>
> Takashi
Doesn't this depend upon the driver implementation ? IIRC, I tried to
request NON-INTERLEAVED on the PXA270 AC97 driver and it told me that
wasn't a permitted operation (one of the reasons that I needed to use
mmap access in SALSA-Lib).
next prev parent reply other threads:[~2007-07-11 13:09 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-10 18:08 non-interleaved mode Steve Longerbeam
2007-07-11 8:47 ` Takashi Iwai
2007-07-11 13:13 ` J. Scott Merritt [this message]
2007-07-11 13:35 ` Takashi Iwai
2007-07-11 16:23 ` Steve Longerbeam
2007-07-11 17:44 ` Jaroslav Kysela
2007-07-11 18:12 ` Steve Longerbeam
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