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- Log -----------------------------------------------------------------
b1ea7c0 alsa: document alsa mixer path/profile sets a bit more
-----------------------------------------------------------------------
Summary of changes:
.../alsa/mixer/paths/analog-output.conf.common | 8 ++++++++
src/modules/alsa/mixer/profile-sets/default.conf | 18 +++++++++++++++---
2 files changed, 23 insertions(+), 3 deletions(-)
-----------------------------------------------------------------------
commit b1ea7c0d89a9516f89a7eed5d7a2f121d639b10a
Author: Lennart Poettering <[email protected]>
Date: Fri Jun 19 01:55:59 2009 +0200
alsa: document alsa mixer path/profile sets a bit more
diff --git a/src/modules/alsa/mixer/paths/analog-output.conf.common
b/src/modules/alsa/mixer/paths/analog-output.conf.common
index 47243db..cc1185f 100644
--- a/src/modules/alsa/mixer/paths/analog-output.conf.common
+++ b/src/modules/alsa/mixer/paths/analog-output.conf.common
@@ -48,6 +48,10 @@
; 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
; 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]
; 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.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]
switch = mute
diff --git a/src/modules/alsa/mixer/profile-sets/default.conf
b/src/modules/alsa/mixer/profile-sets/default.conf
index 6ae11b4..ac41a8d 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
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