[pulseaudio-discuss] [PATCH v2 5/5] alsa-mixer: Improve volume handling for Terratec Aureon Dual USB

[Raymond Yau]

2015-04-18 4:26 GMT+08:00 Tanu Kaskinen <tanu.kaskinen at linux.intel.com>:

> This card can be used in analog or digital mode, and in the digital
> mode there's no hardware volume or mute support. With the default
> configuration PulseAudio only sees a single "speaker" port, and
> assumes that controlling the Speaker element has some effect, which
> is not true in the digital mode. To work around this, let's add a
> special path configuration for this card to disable hardware volume.
>
> It would be better to disable hardware volume only in the digital
> mode, but I believe there's no way to automatically figure out which
> mode is in use, and requiring the user to tell which mode is in use
> at any given time would not be user-friendly.
>
> BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=81777
>


 diff --git
a/src/modules/alsa/mixer/paths/terratec-aureon-dual-usb-output.conf
b/src/modules/alsa/mixer/paths/terratec-aureon-dual-usb-output.conf

> new file mode 100644
> index 0000000..4bb4746
> --- /dev/null
> +++ b/src/modules/alsa/mixer/paths/terratec-aureon-dual-usb-output.conf
> @@ -0,0 +1,37 @@
> +# 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 Terratec Aureon Dual USB.
> +#
> +# See analog-output.conf.common for an explanation on the directives.
> +
> +[General]
> +description-key = output-speaker
> +default-volume = 30%
> +
> +# We set the hardware volume to maximum and do the volume control in
> software,
> +# because the hardware volume only has effect when the card is in analog
> mode.
> +# In the digital mode there's no hardware volume. Since we don't have any
> way
> +# to know which mode is in use, we disable hardware volume control in both
> +# modes. Otherwise the sink volume control wouldn't work properly in the
> +# digital mode.
> +#
> +# Similarly as with volume, the Speaker mute doesn't have effect in the
> digital
> +# mode, so we unmute the element unconditionally and implement muting in
> +# software.
> +[Element Speaker]
> +volume = zero
> +switch = on
> diff --git a/src/modules/alsa/mixer/profile-sets/90-pulseaudio.rules
> b/src/modules/alsa/mixer/profile-sets/90-pulseaudio.rules
> index eeb6ac4..7c8c14f 100644
> --- a/src/modules/alsa/mixer/profile-sets/90-pulseaudio.rules
> +++ b/src/modules/alsa/mixer/profile-sets/90-pulseaudio.rules
> @@ -97,5 +97,6 @@ ATTRS{idVendor}=="17cc", ATTRS{idProduct}=="1011",
> ENV{PULSE_PROFILE_SET}="nativ
>  ATTRS{idVendor}=="17cc", ATTRS{idProduct}=="1021",
> ENV{PULSE_PROFILE_SET}="native-instruments-traktor-audio10.conf"
>  ATTRS{idVendor}=="0763", ATTRS{idProduct}=="2012",
> ENV{PULSE_PROFILE_SET}="maudio-fasttrack-pro.conf"
>  ATTRS{idVendor}=="045e", ATTRS{idProduct}=="02bb",
> ENV{PULSE_PROFILE_SET}="kinect-audio.conf"
> +ATTRS{idVendor}=="0ccd", ATTRS{idProduct}=="0077",
> ENV{PULSE_PROFILE_SET}="terratec-aureon-dual-usb.conf"
>
>  LABEL="pulseaudio_end"
> diff --git
> a/src/modules/alsa/mixer/profile-sets/terratec-aureon-dual-usb.conf
> b/src/modules/alsa/mixer/profile-sets/terratec-aureon-dual-usb.conf
> new file mode 100644
> index 0000000..e6b6573
> --- /dev/null
> +++ b/src/modules/alsa/mixer/profile-sets/terratec-aureon-dual-usb.conf
> @@ -0,0 +1,42 @@
> +# 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.
> +
> +# Terratec Aureon Dual USB
> +#
> +# This card has one stereo output jack and one analog mono mic jack.
> +#
> +# The output jack supports both analog and digital output, but there's no
> way
> +# to detect which one is currently in use (or if there is a way, the
> PulseAudio
> +# developers don't know that).
> +#
> +# See default.conf for an explanation on the directives used here.
> +
> +[General]
> +auto-profiles = yes
> +
> +[Mapping stereo]
> +device-strings = hw:%f
> +channel-map = front-left,front-right
> +paths-output = terratec-aureon-dual-usb-output
> +priority = 1
> +direction = output
> +
> +[Mapping analog-mono]
> +device-strings = hw:%f
> +channel-map = mono
> +paths-input = analog-input-mic
> +priority = 1
> +direction = input
> --
>

Are there any pulseaudio verbose log when switching between analog and
optical output before and after this patch ?

http://git.alsa-project.org/?p=alsa-lib.git;a=blob;f=src/conf/cards/USB-Audio.conf;hb=HEAD

alsa use same device for analog and digital, this mean that pulseaudio
still have analog output profile and IEC958 profile

http://cgit.freedesktop.org/pulseaudio/pulseaudio/tree/src/modules/alsa/mixer/paths/iec958-stereo-output.conf

Pulseaudio should ignore speaker playback volume when using iec958 stereo
profile
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20150422/3dba8e22/attachment-0001.html>