From: Dajun Chen <dajun.chen@gmail.com>
To: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: alsa-devel@alsa-project.org
Subject: Re: Driver for a codec with built-in DSP for MP3 playback
Date: Mon, 15 Mar 2010 16:01:34 +0000 [thread overview]
Message-ID: <b77ca4471003150901x5957d10bl97cc29ede2d072b0@mail.gmail.com> (raw)
In-Reply-To: <20100315141404.GA13878@sirena.org.uk>
Hi,
I mean example code of a driver which works either on PCM and MP3 (or other
compressed) audio stream.
Reagrds
David
On Mon, Mar 15, 2010 at 2:14 PM, Mark Brown <
broonie@opensource.wolfsonmicro.com> wrote:
> On Mon, Mar 15, 2010 at 02:02:39PM +0000, Dajun Chen wrote:
>
> > I am wondering where to find the guidances of developing a device driver
> for
> > a codec device which has a built-in DSP for MP3 (and tracks in other
> format)
> > playback and recording?
>
> OOI which device?
>
> I'm not sure what you mean by guidance here. The standard thing would
> be to do it as a regular CODEC driver with a custom interface for
> userspace (eg, gstreamer) to talk to. The best way of handling DAPM
> will depend on implementation but probably representing the output of
> the DSP as an input pin will be easiest.
>
next prev parent reply other threads:[~2010-03-15 16:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-15 14:02 Driver for a codec with built-in DSP for MP3 playback Dajun Chen
2010-03-15 14:14 ` Mark Brown
2010-03-15 16:01 ` Dajun Chen [this message]
2010-03-15 16:15 ` Mark Brown
2010-03-15 16:41 ` Dajun Chen
2010-03-15 16:48 ` Mark Brown
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