From: Takashi Iwai <tiwai@suse.de>
To: Colin Guthrie <gmane@colin.guthr.ie>
Cc: alsa-devel@alsa-project.org
Subject: Re: "default" device. Is there a way to detect if it's a plugin, and if so which one?
Date: Mon, 04 Apr 2011 12:57:00 +0200 [thread overview]
Message-ID: <s5hhbaethc3.wl%tiwai@suse.de> (raw)
In-Reply-To: <in9oqa$46g$1@dough.gmane.org>
At Sun, 03 Apr 2011 13:22:34 +0100,
Colin Guthrie wrote:
>
> Hi,
>
> If the user opens the "default" device in alsa, is there a way to find
> out if that "device" is actually a plugin?
>
> i.e. is it possible to tell if you have opened the pulseaudio plugin via
> alsa?
>
> There are various hacky ways (e.g. checking hints etc.) but that relies
> on downstream packaging which certainly isn't fool proof.
There is no clean way, AFAIK.
A new API would be needed. For example, something like:
snd_pcm_contains_type(pcm, SND_PCM_TYPE_EXTPLUG);
But checking whether PA-plugin is used is difficult with the API above
because pulse plugin has no unique PCM type but it's a sub-plugin
of extplug plugin...
Takashi
next prev parent reply other threads:[~2011-04-04 10:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-03 12:22 "default" device. Is there a way to detect if it's a plugin, and if so which one? Colin Guthrie
2011-04-04 10:57 ` Takashi Iwai [this message]
2011-04-04 11:22 ` Colin Guthrie
2011-04-04 11:38 ` Sebastian H.
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