From: Takashi Iwai <tiwai@suse.de>
To: alsa-devel <alsa-devel@lists.sourceforge.net>
Cc: Clemens Ladisch <clemens@ladisch.de>,
Fedor Pikus <fedor_pikus@mentorg.com>,
Patrick Shirkey <pshirkey@boosthardware.com>
Subject: Re: USB Audio/Midiman - partial success
Date: Thu, 12 Sep 2002 17:30:41 +0200 [thread overview]
Message-ID: <s5h65xbp6n2.wl@alsa2.suse.de> (raw)
In-Reply-To: <Pine.HPX.4.33n.0209100853400.12586-100000@studcom.urz.uni-halle.de>
At Tue, 10 Sep 2002 10:58:34 +0200 (METDST),
Clemens Ladisch wrote:
>
> > > The two PCM devices cannot be used at the same time anyway, so I think
> > > creating a quirk for interface 0 which says "ignore this" could work.
> > > Takashi, any comments?
> >
> > i think implementing a semaphore (or flag) for each endpoint would be
> > better, so that the driver can find generally double-endpoints
> > problem.
>
> I cannot imagine anybody else would be stupid enough to design a device
> with double endpoints. But then I didn't imagine Midiman would, either.
> Oh well, Murphy's Law ... :-(
since many (at least plural :) devices have this problem, i changed
the usbaudio code slightly. now a pcm stream is created per endpoint
instead of interface.
on this version, m-audio's device should have one (for duo) or two
(for quattro) pcm devices.
please let me know if any problems arise with this change.
ciao,
Takashi
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next prev parent reply other threads:[~2002-09-12 15:30 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.31.0209090841350.25400-100000@lorien.wv.mentorg.com>
2002-09-09 17:46 ` USB Audio/Midiman - partial success Clemens Ladisch
2002-09-09 18:30 ` Takashi Iwai
2002-09-10 8:58 ` Clemens Ladisch
2002-09-10 13:10 ` Takashi Iwai
2002-09-10 13:41 ` Patrick Shirkey
2002-09-12 15:30 ` Takashi Iwai [this message]
2002-09-12 22:34 ` Patrick Shirkey
2002-09-13 5:59 ` Patrick Shirkey
2002-09-13 11:30 ` Takashi Iwai
2002-09-13 14:30 ` Patrick Shirkey
[not found] ` <Pine.LNX.4.31.0209122304430.1450-100000@lorien.wv.mentorg.com>
2002-09-13 11:33 ` Takashi Iwai
[not found] <Pine.LNX.4.31.0209132140320.13642-200000@lorien.wv.mentorg.com>
2002-09-16 7:05 ` Clemens Ladisch
[not found] <Pine.LNX.4.31.0209160838270.10583-100000@lorien.wv.mentorg.com>
2002-09-17 7:29 ` Clemens Ladisch
[not found] <Pine.LNX.4.31.0209172023540.4425-100000@lorien.wv.mentorg.com>
2002-09-18 9:25 ` Clemens Ladisch
[not found] <Pine.LNX.4.31.0209191923430.30429-100000@lorien.wv.mentorg.com>
2002-09-20 10:04 ` Clemens Ladisch
[not found] <Pine.LNX.4.31.0209220035210.4610-100000@lorien.wv.mentorg.com>
2002-09-23 9:12 ` Clemens Ladisch
[not found] ` <Pine.LNX.4.31.0209232104140.18815-100000@lorien.wv.mentorg.com>
2002-09-24 14:27 ` Takashi Iwai
[not found] ` <Pine.LNX.4.31.0209240835370.9799-100000@lorien.wv.mentorg.com>
2002-09-24 15:50 ` Takashi Iwai
[not found] ` <Pine.LNX.4.31.0209241952400.28299-100000@lorien.wv.mentorg.com>
2002-09-25 10:46 ` Takashi Iwai
[not found] <Pine.LNX.4.31.0209252301320.29794-100000@lorien.wv.mentorg.com>
2002-09-26 7:47 ` Clemens Ladisch
2002-09-26 16:08 ` Takashi Iwai
[not found] ` <Pine.LNX.4.31.0209261234130.17593-100000@lorien.wv.mentorg.com>
2002-10-02 13:46 ` Takashi Iwai
[not found] ` <Pine.LNX.4.31.0210032253120.4068-100000@lorien.wv.mentorg.com>
2002-10-04 11:34 ` Takashi Iwai
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