alsa: add copyright blobs and comments to all mixer paths/profile sets

15 files changed, 400 insertions, 57 deletions

diff --git a/src/modules/alsa/mixer/paths/analog-input-aux.conf b/src/modules/alsa/mixer/paths/analog-input-aux.conf
index 8f480567..db78eb48 100644
--- a/src/modules/alsa/mixer/paths/analog-input-aux.conf
+++ b/src/modules/alsa/mixer/paths/analog-input-aux.conf
@@ -1,4 +1,22 @@
-# For devices, where we have an Aux element
+# This file is part of PulseAudio.
+#
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+; For devices where an 'Aux' element exists
+;
+; See analog-output.conf.common for an explanation on the directives
 
 [General]
 priority = 90
@@ -29,4 +47,16 @@ override-map.2 = all-left,all-right
 switch = off
 volume = off
 
+[Element Mic/Line]
+switch = off
+volume = off
+
+[Element TV Tuner]
+switch = off
+volume = off
+
+[Element FM]
+switch = off
+volume = off
+
 .include analog-input.conf.common
diff --git a/src/modules/alsa/mixer/paths/analog-input-fm.conf b/src/modules/alsa/mixer/paths/analog-input-fm.conf
index 0f78f39f..baf674aa 100644
--- a/src/modules/alsa/mixer/paths/analog-input-fm.conf
+++ b/src/modules/alsa/mixer/paths/analog-input-fm.conf
@@ -1,4 +1,22 @@
-# For devices where we have an FM element
+# This file is part of PulseAudio.
+#
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+; For devices where an 'FM' element exists
+;
+; See analog-output.conf.common for an explanation on the directives
 
 [General]
 priority = 70
diff --git a/src/modules/alsa/mixer/paths/analog-input-linein.conf b/src/modules/alsa/mixer/paths/analog-input-linein.conf
index b6ba738c..4be5722d 100644
--- a/src/modules/alsa/mixer/paths/analog-input-linein.conf
+++ b/src/modules/alsa/mixer/paths/analog-input-linein.conf
@@ -1,4 +1,22 @@
-# For devices, where we have  a Line element
+# This file is part of PulseAudio.
+#
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+; For devices where a 'Line' element exists
+;
+; See analog-output.conf.common for an explanation on the directives
 
 [General]
 priority = 90
diff --git a/src/modules/alsa/mixer/paths/analog-input-mic-line.conf b/src/modules/alsa/mixer/paths/analog-input-mic-line.conf
index 7d4addf7..f7f30854 100644
--- a/src/modules/alsa/mixer/paths/analog-input-mic-line.conf
+++ b/src/modules/alsa/mixer/paths/analog-input-mic-line.conf
@@ -1,4 +1,22 @@
-# For devices where we have a Mic/Lineb element
+# This file is part of PulseAudio.
+#
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+; For devices where a 'Mic/Line' element exists
+;
+; See analog-output.conf.common for an explanation on the directives
 
 [General]
 priority = 90
@@ -42,3 +60,4 @@ switch = off
 volume = off
 
 .include analog-input.conf.common
+.include analog-input-mic.conf.common
diff --git a/src/modules/alsa/mixer/paths/analog-input-mic.conf b/src/modules/alsa/mixer/paths/analog-input-mic.conf
index 004cd24a..2a36f2f3 100644
--- a/src/modules/alsa/mixer/paths/analog-input-mic.conf
+++ b/src/modules/alsa/mixer/paths/analog-input-mic.conf
@@ -1,4 +1,22 @@
-# For devices where we have  a Mic element
+# This file is part of PulseAudio.
+#
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+; For devices where a 'Mic' element exists
+;
+; See analog-output.conf.common for an explanation on the directives
 
 [General]
 priority = 100
diff --git a/src/modules/alsa/mixer/paths/analog-input-mic.conf.common b/src/modules/alsa/mixer/paths/analog-input-mic.conf.common
index db70e507..b35e7af8 100644
--- a/src/modules/alsa/mixer/paths/analog-input-mic.conf.common
+++ b/src/modules/alsa/mixer/paths/analog-input-mic.conf.common
@@ -1,3 +1,23 @@
+# This file is part of PulseAudio.
+#
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+; Common element for all microphone inputs
+;
+; See analog-output.conf.common for an explanation on the directives
+
 ;;; 'Mic Select'
 
 [Element Mic Select]
diff --git a/src/modules/alsa/mixer/paths/analog-input-tvtuner.conf b/src/modules/alsa/mixer/paths/analog-input-tvtuner.conf
index ea0a0b72..8531ec70 100644
--- a/src/modules/alsa/mixer/paths/analog-input-tvtuner.conf
+++ b/src/modules/alsa/mixer/paths/analog-input-tvtuner.conf
@@ -1,4 +1,22 @@
-# For devices, where we have a TV Tuner element
+# This file is part of PulseAudio.
+#
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+; For devices where a 'TV Tuner' element exists
+;
+; See analog-output.conf.common for an explanation on the directives
 
 [General]
 priority = 70
diff --git a/src/modules/alsa/mixer/paths/analog-input-video.conf b/src/modules/alsa/mixer/paths/analog-input-video.conf
index 27acc254..74c76f07 100644
--- a/src/modules/alsa/mixer/paths/analog-input-video.conf
+++ b/src/modules/alsa/mixer/paths/analog-input-video.conf
@@ -1,4 +1,22 @@
-# For devices, where we have a Video element
+# This file is part of PulseAudio.
+#
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+; For devices where a 'Video' element exists
+;
+; See analog-output.conf.common for an explanation on the directives
 
 [General]
 priority = 70
@@ -28,4 +46,16 @@ volume = merge
 override-map.1 = all
 override-map.2 = all-left,all-right
 
+[Element Mic/Line]
+switch = off
+volume = off
+
+[Element TV Tuner]
+switch = off
+volume = off
+
+[Element FM]
+switch = off
+volume = off
+
 .include analog-input.conf.common
diff --git a/src/modules/alsa/mixer/paths/analog-input.conf b/src/modules/alsa/mixer/paths/analog-input.conf
index b221bb44..5055f90a 100644
--- a/src/modules/alsa/mixer/paths/analog-input.conf
+++ b/src/modules/alsa/mixer/paths/analog-input.conf
@@ -1,4 +1,23 @@
-# A fallback for devices that lack seperate Mic/Line/Aux/Video elements
+# This file is part of PulseAudio.
+#
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+; A fallback for devices that lack seperate Mic/Line/Aux/Video/TV
+; Tuner/FM elements
+;
+; See analog-output.conf.common for an explanation on the directives
 
 [General]
 priority = 100
diff --git a/src/modules/alsa/mixer/paths/analog-input.conf.common b/src/modules/alsa/mixer/paths/analog-input.conf.common
index d34afd04..6728a6ae 100644
--- a/src/modules/alsa/mixer/paths/analog-input.conf.common
+++ b/src/modules/alsa/mixer/paths/analog-input.conf.common
@@ -1,30 +1,48 @@
-# Mixer path for PulseAudio's ALSA backend. If multiple options by the
-# same id are discovered they will be suffixed with a number to
-# distuingish them, in the same order they appear here.
+# This file is part of PulseAudio.
 #
-# Source selection should use the following names:
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
 #
-#       input                       -- If we don't know the exact kind of input
-#       input-microphone
-#       input-microphone-internal
-#       input-microphone-external
-#       input-linein
-#       input-video
-#       input-radio
-#       input-docking-microphone
-#       input-docking-linein
-#       input-docking
-#
-#  We explicitly don't want to wrap the following sources:
-#
-#       CD
-#       Synth/MIDI
-#       Phone
-#       Mix
-#       Digital/SPDIF
-#       Master
-#       PC Speaker
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
 #
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+; Mixer path for PulseAudio's ALSA backend, common elements for all
+; input paths. If multiple options by the same id are discovered they
+; will be suffixed with a number to distuingish them, in the same
+; order they appear here.
+;
+; Source selection should use the following names:
+;
+;       input                       -- If we don't know the exact kind of input
+;       input-microphone
+;       input-microphone-internal
+;       input-microphone-external
+;       input-linein
+;       input-video
+;       input-radio
+;       input-docking-microphone
+;       input-docking-linein
+;       input-docking
+;
+;  We explicitly don't want to wrap the following sources:
+;
+;       CD
+;       Synth/MIDI
+;       Phone
+;       Mix
+;       Digital/SPDIF
+;       Master
+;       PC Speaker
+;
+; See analog-output.conf.common for an explanation on the directives
 
 ;;; 'Input Source Select'
 
diff --git a/src/modules/alsa/mixer/paths/analog-output-headphones.conf b/src/modules/alsa/mixer/paths/analog-output-headphones.conf
index 1a172d4c..c018e0eb 100644
--- a/src/modules/alsa/mixer/paths/analog-output-headphones.conf
+++ b/src/modules/alsa/mixer/paths/analog-output-headphones.conf
@@ -1,4 +1,22 @@
-# Path for mixers that have a Headphone slider
+# This file is part of PulseAudio.
+#
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+; Path for mixers that have a 'Headphone' control
+;
+; See analog-output.conf.common for an explanation on the directives
 
 [General]
 priority = 90
diff --git a/src/modules/alsa/mixer/paths/analog-output-lfe-on-mono.conf b/src/modules/alsa/mixer/paths/analog-output-lfe-on-mono.conf
index 67031762..7a267890 100644
--- a/src/modules/alsa/mixer/paths/analog-output-lfe-on-mono.conf
+++ b/src/modules/alsa/mixer/paths/analog-output-lfe-on-mono.conf
@@ -1,5 +1,23 @@
-# Intended for usage in laptops that have a seperate LFE speaker
-# connected to the Master mono connector
+# This file is part of PulseAudio.
+#
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+; Intended for usage in laptops that have a seperate LFE speaker
+; connected to the Master mono connector
+;
+; See analog-output.conf.common for an explanation on the directives
 
 [General]
 priority = 40
diff --git a/src/modules/alsa/mixer/paths/analog-output-mono.conf b/src/modules/alsa/mixer/paths/analog-output-mono.conf
index a23d9b79..f6cb9f8a 100644
--- a/src/modules/alsa/mixer/paths/analog-output-mono.conf
+++ b/src/modules/alsa/mixer/paths/analog-output-mono.conf
@@ -1,4 +1,22 @@
-# Intended for usage on boards that have a seperate Mono output plug.
+# This file is part of PulseAudio.
+#
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+; Intended for usage on boards that have a seperate Mono output plug.
+;
+; See analog-output.conf.common for an explanation on the directives
 
 [General]
 priority = 50
diff --git a/src/modules/alsa/mixer/paths/analog-output.conf b/src/modules/alsa/mixer/paths/analog-output.conf
index 15e703c4..ea108aaf 100644
--- a/src/modules/alsa/mixer/paths/analog-output.conf
+++ b/src/modules/alsa/mixer/paths/analog-output.conf
@@ -1,4 +1,22 @@
-# Intended for the 'default' output
+# This file is part of PulseAudio.
+#
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
+#
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+; Intended for the 'default' output
+;
+; See analog-output.conf.common for an explanation on the directives
 
 [General]
 priority = 100
diff --git a/src/modules/alsa/mixer/paths/analog-output.conf.common b/src/modules/alsa/mixer/paths/analog-output.conf.common
index c38eccde..47243dbc 100644
--- a/src/modules/alsa/mixer/paths/analog-output.conf.common
+++ b/src/modules/alsa/mixer/paths/analog-output.conf.common
@@ -1,26 +1,89 @@
-# Common part of all paths
-
-# [General]
-# priority = ...
-# description = ...
-#
-# [Option ...:...]
-# name = ...
-# priority = ...
-#
-# [Element ...]
-# required = ignore | switch | volume | enumeration | any
-# required-absent = ignore | switch | volume
+# This file is part of PulseAudio.
 #
-# switch = ignore | mute | off | on | select
-# volume = ignore | merge | off | zero
-# enumeration = ignore | select
+# PulseAudio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of the
+# License, or (at your option) any later version.
 #
-# direction = playback | capture
-# direction-try-other = no | yes
+# PulseAudio is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
 #
-# override-map.1 = ...
-# override-map.2 = ...
+# You should have received a copy of the GNU Lesser General Public License
+# along with PulseAudio; if not, write to the Free Software Foundation,
+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+
+; Common part of all paths
+
+; So here's generally how mixer paths are used by PA: PA goes through
+; a mixer path file from top to bottom and checks if a mixer element
+; described therein exists. If so it is added to the list of mixer
+; elements PA will control, keeping the order it read them in. If a
+; mixer element described here has set the required= or
+; required-absent= directives a path might not be accepted as valid
+; and is ignored in its entirety (see below). However usually if a
+; element listed here is missing this one element is ignored but not
+; the entire path.
+;
+; When a device shall be muted/unmuted *all* elements listed in a path
+; file with "switch = mute" will be toggled.
+;
+; When a device shall change its volume, PA will got through the list
+; of all elements with "volume = merge" and set the volume on the
+; first element. If that element does not support dB volumes, this is
+; where the story ends. If it does support dB volumes, PA divides the
+; requested volume by the volume that was set on this element, and
+; then go on to the next element with "volume = merge" and then set
+; that there, and so on.  That way the first volume element in the
+; path will be the one that does the 'biggest' part of the overall
+; volume adjustment, with the remaining elements usually being set to
+; some value next to 0dB. This logic makes sure we get the full range
+; over all volume sliders and a very high granularity of volumes
+; already in hardware.
+;
+; All switches and enumerations set to "select" are exposed via the
+; "port" functionality of sinks/sources. Basically every possible
+; switch setting and every possible enumeration setting will be
+; 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.
+
+; [General]
+; priority = ...                         # Priority for this path
+; description = ...
+;
+; [Option ...:...]                       # For each option of an enumeration or switch element
+;                                        # that shall be exposed as a sink/source port. Needs to
+;                                        # be named after the Element, followed by a colon, followed
+;                                        # by the option name, resp. on/off if the element is a switch.
+; name = ...                             # Logical name to use in the path identifier
+; priority = ...                         # Priority if this is made into a device port
+;
+; [Element ...]                          # For each element that we shall control
+; required = ignore | switch | volume | enumeration | any     # If set, require this element to be of this kind and available,
+;                                                             # otherwise don't consider this path valid for the card
+; required-absent = ignore | switch | volume                  # If set, require this element to not be of this kind and not
+;                                                             # available, otherwise don't consider this path valid for the card
+;
+; switch = ignore | mute | off | on | select                  # What to do with this switch: ignore it, make it follow mute status,
+;                                                             # always set it to off, always to on, or make it selectable as port.
+;                                                             # If set to 'select' you need to define an Option section for on
+;                                                             # and off
+; volume = ignore | merge | off | zero   # What to do with this volume: ignore it, merge it into the device
+;                                        # volume slider, always set it to the lowest value possible, or always
+;                                        # set it to 0 dB (for whatever that means)
+; enumeration = ignore | select          # What to do with this enumeration, ignore it or make it selectable
+;                                        # via device ports. If set to 'select' you need to define an Option section
+;                                        # for each of the items you want to expose
+; direction = playback | capture         # Is this relevant only for playback or capture? If not set this will implicitly be
+;                                        # set the direction of the PCM device is opened as. Generally this doesn't need to be set
+;                                        # unless you have a broken driver that has playback controls marked for capture or vice
+;                                        # versa
+; direction-try-other = no | yes         # If the element does not supported what is requested, try the other direction, too?
+;
+; 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
 
 [Element PCM]
 switch = mute