From: Takashi Iwai <tiwai@suse.de>
To: Scott Jiang <scott.jiang.linux@gmail.com>
Cc: alsa-devel@alsa-project.org,
Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: Re: Have multiple opens removed on one device?
Date: Mon, 22 Aug 2011 12:15:58 +0200 [thread overview]
Message-ID: <s5hipppsqe9.wl%tiwai@suse.de> (raw)
In-Reply-To: <CAHG8p1BRN365PTyDxh-6UFWKtf_M-WcVZDGmuXB0W+CjTgPNGQ@mail.gmail.com>
At Mon, 22 Aug 2011 18:13:03 +0800,
Scott Jiang wrote:
>
> Hi Mark and Takashi,
>
> In kernel 2.6.34 I can use aplay to play audio at the same time, alsa
> will mix the audio.
No, kernel part doesn't do such a thing. If it's mixed, it must be
in the user-space (either dmix or a daemon like pulseaudio), unless
you hardware can do mixing by itself.
> Now the second open will return device busy.
So, something else must have been changed in your system...
Takashi
next prev parent reply other threads:[~2011-08-22 10:15 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-22 10:13 Have multiple opens removed on one device? Scott Jiang
2011-08-22 10:15 ` Takashi Iwai [this message]
2011-08-22 11:21 ` Mark Brown
2011-08-29 10:11 ` Scott Jiang
2011-09-01 3:43 ` Scott Jiang
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