At Fri, 14 Nov 2003 14:01:09 +0100, Peter Kirk wrote: > > WARNING: Unsanitized content follows. > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Am Freitag, 14. November 2003 13:21 schrieb Paul Davis: > > >So, these are two numbers - and basicly all is fine as long as you dont > > > wan= t=20 > > >to excede them, but if you do, you need to use dmix or dsnoop. Why not > > > use= =20 > > >dmix and dsnoop automaticly when necessary ? Wouldnt it be possible to > > > have= > > > > because it would be catastrophic, or, well, at least very bad, for > > applications that want to "sit close to the metal". > > > > this is a user-space configuration issue, not something that alsa-lib > > should do by default. if the user (or the distributor) defines "dmix" > > to be the default device type, then every conformant ALSA application > > will do the right thing. apps like JACK that want to "site close to > > the metal" will still use "hw:N" unless you tell it otherwise, but > > consumer apps will use "default" (that's what i mean by conformant) > > and get dmix behaviour. > Hmm, > > are you telling me that normal applications will already automaticly use > dmix ? Its a pitty my soundcard (SB Live!) can play so many streams in > hardware at once, so I dont realy know if alsa is doing dmixing *on*the*fly*. > But I did *think* that if you had a cheepo laptop, you couldnt open 5 xmms > and 5 xines and start playing back with all of them - I could be wrong of > course. The thing Im quite certain of, is that there is no dmix jumping in if > you try to run 2 playback oss apps through the oss emulation layer of alsa - > this will give you trouble if your soundcard cant play two streams in > hardware. > Then there still would be the point with dsnoop - I _know_ it doesnt work on > my soundcard to open two instances of TeamSpeak (voice communication -> full > duplex) - and be able to talk and hear on both...this is because the capture > device is taken. > Is there anything being thought about of something like the automagic > dsnooping I was talking about ? It realy would be nice to be able to use > multiple applications of teamspeak on *normal* soundcards like mine...
you can override the "default" pcm to use dmix/dsnoop plugin by defining it with '!' prefix in ~/.asoundrc. this won't conflict with special apps like JACK, because they usually open the hw layer directly. as a future plan, we'll define dmix as default for el-cheapo soundcards, but e.g. not for sb live, which supports such a function on hardware. so far, we leave it as user's own configuration, simply because dmix had been under development and not quite stable. well, there is still a problem that the ALSA's configuration is not stream-wise. a single definition is used for both playback and capture directions. this should be improved in the future. Takashi ------------------------------------------------------- This SF.Net email sponsored by: ApacheCon 2003, 16-19 November in Las Vegas. Learn firsthand the latest developments in Apache, PHP, Perl, XML, Java, MySQL, WebDAV, and more! http://www.apachecon.com/ _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
