On Mon, 28.12.09 14:49, Colin Guthrie ([email protected]) wrote: > Hi, > > I could have sworn this was asked about on the ML recently but perhaps > it was just IRC as I cannot for the life of me find the message :s > > Anyway, someone was asking about their 5.1 capable card and how they > would prefer that stereo streams were not upmixed as their sound > receiver does a better job of upmixing (e.g. Dolby ProLogic or similar > gubbins). > > I was thinking about this today and I think this is a pretty common > setup. I think I may actually have need to do that in my own setup now > I've finally gotten around to configuring it up in a vaguely working way! > > So what I was thinking was some way to defining the mixing profile (via > simple module argument) that simply lists (comma separated) the channel > counts that are permitted for remixing. > > The remix = yes/no still works too but inverses the logic of the > remix_profile argument. > > e.g. remix="yes" remix_profile="2" means it will *not* remix 2 channel > sound to the sinks channel count. > > whereas remix="no" remix_profile="1,3,4,5,6,7,8,9,10" means much the > same thing, but only as far as 10 channels.
Isn't it a bit ugly if one config options completely reverses its meaning depending on another one? > Obviously remix_profile is fully optional and remix= works as currently > if specified on it's own. > > I've not analised how the code works to see how much hassle this would > be to implement, but if this sounds like a vaguely sensible idea, I'll > look at cooking up a patch. Hmm, IUC the use case for this is that mono→stereo upmixing should always be done while stereo→5.1 and mono→5.1 upmixing should not be attempted, right? And that this means that if you play a mono stream you need to upmix it to stereo on a 5.1 device right? That use case complicates things considerably sincei its not just about saying remixing yes/no, but about saying: if remixing from "A" to "B" is requested actually do "A" to "C", with "A" != "B" and "B" != "C", if you follow. Lennart -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net http://0pointer.net/lennart/ GnuPG 0x1A015CC4 _______________________________________________ pulseaudio-discuss mailing list [email protected] https://tango.0pointer.de/mailman/listinfo/pulseaudio-discuss
