From: Matthieu CASTET <matthieu.castet@parrot.com>
To: felipe.balbi@nokia.com
Cc: ext Bryan Wu <cooloney@kernel.org>,
"linux-usb@vger.kernel.org" <linux-usb@vger.kernel.org>,
ALSA devel <alsa-devel@alsa-project.org>
Subject: Re: Some idea about usb audio gadget driver.
Date: Tue, 23 Sep 2008 14:08:05 +0200 [thread overview]
Message-ID: <48D8DC25.2060405@parrot.com> (raw)
In-Reply-To: <20080923104542.GB24627@gandalf.research.nokia.com>
Felipe Balbi a écrit :
> On Tue, Sep 23, 2008 at 05:50:33PM +0800, ext Bryan Wu wrote:
>> Hi ALSA and USB folks,
>>
>>
>> - Is there any similar things on this planet?
>> - How about gmidi usb midi gadget driver?
>> - How can I open/playback/record/close a ALSA sound card in kernel
>> space not using alsalib in user space?
>
> Start by converting gmidi to composite framework. Separate the alsa
> generic code from usb generic code and the function driver (in that case
> MIDI). Then, all you have to do is add a new function driver with proper
> audio streaming.
I am not sure there is lot's of common alsa code. IIRC Midi and Pcm API
are different in alsa.
But I think we shouldn't try to drive a sound card from kernel, we
should create an alsa sound card like gmidi, and let's userspace do what
it wants (redirect from/to another sound card, stream files, ...).
Mattieu
next prev parent reply other threads:[~2008-09-23 12:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-23 9:50 Some idea about usb audio gadget driver Bryan Wu
2008-09-23 10:45 ` Felipe Balbi
2008-09-23 12:08 ` Matthieu CASTET [this message]
[not found] ` <386072610809230250w2e43c20ei89076a8db62c5044-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-09-24 7:15 ` [alsa-devel] " Clemens Ladisch
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