From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lennart Poettering Subject: Re: [patch][saa7134] do not change mute state for capturing audio Date: Tue, 19 Jul 2011 01:16:08 +0200 Message-ID: <4E24BEB8.4060501@redhat.com> References: <4E19D2F7.6060803@list.ru> <4E1E05AC.2070002@infradead.org> <4E1E0A1D.6000604@list.ru> <4E1E1571.6010400@infradead.org> <4E1E8108.3060305@list.ru> <4E1F9A25.1020208@infradead.org> <4E22AF12.4020600@list.ru> <4E22CCC0.8030803@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4E22CCC0.8030803@infradead.org> Sender: linux-media-owner@vger.kernel.org To: Mauro Carvalho Chehab Cc: Stas Sergeev , linux-media@vger.kernel.org, "Nickolay V. Shmyrev" , Devin Heitmueller , ALSA devel , lennart@poettering.net List-Id: alsa-devel@alsa-project.org Heya, On 17.07.2011 13:51, Mauro Carvalho Chehab wrote: > If pulseaudio is starting sound capture at startup, then it is either > a pulseaudio miss-configuration or a bug there. I fail to understand > why pulseaudio would start capturing sound from a V4L audio at startup. > > I think that this is not the default for pulseaudio, though, as > you're the only one complaining about that, and I never saw such > behavior in the time I was using pulseaudio here. > > I don't know enough about pulseaudio to help on this issue, > nor I'm using it currently, so I can't test anything pulsaudio-related. > > Lennart, > > Could you please help us with this issue? ALSA doesn't really have a enumeration API which would allow us to get device properties without opening and configuring a device. In fact, we can't even figure out whether a device may be opened in duplex or simplex without opening it. And that's why we have to probe audio devices, even if it sucks. Lennart