From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Dajun Chen <dajun.chen@gmail.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 14:14:05 +0000 [thread overview]
Message-ID: <20100315141404.GA13878@sirena.org.uk> (raw)
In-Reply-To: <b77ca4471003150702q69a99932m36d2e667663749aa@mail.gmail.com>
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 14:14 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 [this message]
2010-03-15 16:01 ` Dajun Chen
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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