From b1ea7c0d89a9516f89a7eed5d7a2f121d639b10a Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Fri, 19 Jun 2009 01:55:59 +0200 Subject: alsa: document alsa mixer path/profile sets a bit more --- src/modules/alsa/mixer/profile-sets/default.conf | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) (limited to 'src/modules/alsa/mixer/profile-sets') diff --git a/src/modules/alsa/mixer/profile-sets/default.conf b/src/modules/alsa/mixer/profile-sets/default.conf index 6ae11b47..ac41a8d3 100644 --- a/src/modules/alsa/mixer/profile-sets/default.conf +++ b/src/modules/alsa/mixer/profile-sets/default.conf @@ -16,8 +16,18 @@ ; Default profile definitions for the ALSA backend of PulseAudio. This ; is used as fallback for all cards that have no special mapping -; assigned. (and should be good enough for the vast majority of cards) -; +; assigned. (and should be good enough for the vast majority of +; cards). Use the udev property PULSE_PROFILE_SET to assign a +; different profile set than this one to a device. So what is this +; about? Simply, what we do here is map ALSA devices to how they are +; exposed in PA. We say which ALSA device string to use to open a +; device, which channel mapping to use then, and which mixer path to +; use. This is encoded in a 'mapping'. Multiple of these mappings can +; be bound together in a 'profile' which is then directly exposed in +; the UI as a card profile. Each mapping assigned to a profile will +; result in one sink/source to be created if the profile is selected +; for the card. + ; [General] ; auto-profiles = no | yes # Instead of defining all profiles manually, autogenerate ; # them by combining every input mapping with every output mapping. @@ -42,7 +52,9 @@ ; # defined in this file too ; description = ... ; priority = ... # Numeric value to deduce priority for this profile -; skip-probe = no | yes # Skip probing for availability? +; skip-probe = no | yes # Skip probing for availability? If this is yes then this profile +; # will be assumed as working without probing. Makes initialization +; # a bit faster but only works if the card is really known well. [General] auto-profiles = yes -- cgit