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alsa: document alsa mixer path/profile sets a bit more

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This commit is contained in:
Lennart Poettering 2009-06-19 01:55:59 +02:00
parent b70b5edcfc
commit b1ea7c0d89
2 changed files with 23 additions and 3 deletions
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8
src/modules/alsa/mixer/paths/analog-output.conf.common
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@ -48,6 +48,10 @@
; combined and made into a "port". So make sure you don't list too ; combined and made into a "port". So make sure you don't list too
; many switches/enums for exposing, because the number of ports might ; many switches/enums for exposing, because the number of ports might
; rise exponentially. ; rise exponentially.
;
; Only one path can be selected at a time. All paths that are valid
; for an audio device will be exposed as "port" for the sink/source.
; [General] ; [General]
; priority = ... # Priority for this path ; priority = ... # Priority for this path
@ -84,6 +88,10 @@
; ;
; override-map.1 = ... # Override the channel mask of the mixer control if the control only exposes a single channel ; override-map.1 = ... # Override the channel mask of the mixer control if the control only exposes a single channel
; override-map.2 = ... # Override the channel masks of the mixer control if the control only exposes two channels ; override-map.2 = ... # Override the channel masks of the mixer control if the control only exposes two channels
; # Override maps should list for each element channel which high-level channels it controls via a
; # channel mask. A channel mask may either be the name of a single channel, or the words "all-left",
; # "all-right", "all-center", "all-front", "all-rear", and "all" to encode a specific subset of
; # channels in a mask
[Element PCM] [Element PCM]
switch = mute switch = mute

18
src/modules/alsa/mixer/profile-sets/default.conf
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@ -16,8 +16,18 @@
; Default profile definitions for the ALSA backend of PulseAudio. This ; Default profile definitions for the ALSA backend of PulseAudio. This
; is used as fallback for all cards that have no special mapping ; 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] ; [General]
; auto-profiles = no | yes # Instead of defining all profiles manually, autogenerate ; auto-profiles = no | yes # Instead of defining all profiles manually, autogenerate
; # them by combining every input mapping with every output mapping. ; # them by combining every input mapping with every output mapping.
@ -42,7 +52,9 @@
; # defined in this file too ; # defined in this file too
; description = ... ; description = ...
; priority = ... # Numeric value to deduce priority for this profile ; 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] [General]
auto-profiles = yes auto-profiles = yes