All I did was add Pulseaudio to Volumio and it’s perfect for me now. MPD plays though ALSA for bit-perfect FLAC goodness, AirPlay is already built in, all that was missing was Pulseaudio for streaming from Linux machines.
This was fixed by installing pulseaudio and pulseaudio-modules-zeroconf.
Here is the configuration I am using. This makes for easy switching between ALSA hardware and Pulse.
/etc/pulse/daemon.conf
[code]# 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 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.
Configuration file for the PulseAudio daemon. See pulse-daemon.conf(5) for
more information. Default values are commented out. Use either ; or # for
commenting.
; daemonize = no
; fail = yes
; allow-module-loading = yes
; allow-exit = yes
; use-pid-file = yes
; system-instance = no
; local-server-type = user
; enable-shm = yes
; shm-size-bytes = 0 # setting this 0 will use the system-default, usually 64 MiB
; lock-memory = no
; cpu-limit = no
; high-priority = yes
; nice-level = -11
; realtime-scheduling = yes
; realtime-priority = 5
exit-idle-time = 5
; scache-idle-time = 20
; dl-search-path = (depends on architecture)
; load-default-script-file = yes
; default-script-file = /etc/pulse/default.pa
; log-target = auto
; log-level = notice
; log-meta = no
; log-time = no
; log-backtrace = 0
resample-method defaults to speex-float-1 on most architectures,
speex-fixed-1 on ARM
; resample-method = speex-float-1
; enable-remixing = yes
; enable-lfe-remixing = no
; flat-volumes = yes
; rlimit-fsize = -1
; rlimit-data = -1
; rlimit-stack = -1
; rlimit-core = -1
; rlimit-as = -1
; rlimit-rss = -1
; rlimit-nproc = -1
; rlimit-nofile = 256
; rlimit-memlock = -1
; rlimit-locks = -1
; rlimit-sigpending = -1
; rlimit-msgqueue = -1
; rlimit-nice = 31
; rlimit-rtprio = 9
; rlimit-rttime = 1000000
; default-sample-format = s16le
; default-sample-rate = 44100
; alternate-sample-rate = 48000
; default-sample-channels = 2
; default-channel-map = front-left,front-right
; default-fragments = 4
; default-fragment-size-msec = 25
; enable-deferred-volume = yes
; deferred-volume-safety-margin-usec = 8000
; deferred-volume-extra-delay-usec = 0[/code]
All I’ve changed is the idle timeout of 5s.
/etc/pulse/default.pa
[code]#!/usr/bin/pulseaudio -nF
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 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.
This startup script is used only if PulseAudio is started per-user
(i.e. not in system mode)
.nofail
Load something into the sample cache
#load-sample-lazy x11-bell /usr/share/sounds/gtk-events/activate.wav
#load-sample-lazy pulse-hotplug /usr/share/sounds/startup3.wav
#load-sample-lazy pulse-coldplug /usr/share/sounds/startup3.wav
#load-sample-lazy pulse-access /usr/share/sounds/generic.wav
.fail
Automatically restore the volume of streams and devices
load-module module-device-restore
load-module module-stream-restore
load-module module-card-restore
Automatically augment property information from .desktop files
stored in /usr/share/application
load-module module-augment-properties
Should be after module--restore but before module--detect
#load-module module-switch-on-port-available
Load audio drivers statically
(it’s probably better to not load these drivers manually, but instead
use module-udev-detect – see below – for doing this automatically)
#load-module module-alsa-sink
#load-module module-alsa-source device=hw:1,0
#load-module module-oss device="/dev/dsp" sink_name=output source_name=input
#load-module module-oss-mmap device="/dev/dsp" sink_name=output source_name=input
#load-module module-null-sink
#load-module module-pipe-sink
Automatically load driver modules depending on the hardware available
.ifexists module-udev-detect.so
load-module module-udev-detect
.else
Use the static hardware detection module (for systems that lack udev support)
load-module module-detect
.endif
Automatically connect sink and source if JACK server is present
.ifexists module-jackdbus-detect.so
.nofail
load-module module-jackdbus-detect channels=2
.fail
.endif
Automatically load driver modules for Bluetooth hardware
.ifexists module-bluetooth-policy.so
load-module module-bluetooth-policy
.endif
.ifexists module-bluetooth-discover.so
load-module module-bluetooth-discover
.endif
Load several protocols
.ifexists module-esound-protocol-unix.so
load-module module-esound-protocol-unix
.endif
load-module module-native-protocol-unix
Network access (may be configured with paprefs, so leave this commented
here if you plan to use paprefs)
#load-module module-esound-protocol-tcp
load-module module-native-protocol-tcp auth-anonymous=1
load-module module-zeroconf-publish
Load the RTP receiver module (also configured via paprefs, see above)
#load-module module-rtp-recv
Load the RTP sender module (also configured via paprefs, see above)
#load-module module-null-sink sink_name=rtp format=s16be channels=2 rate=44100 sink_properties=“device.description=‘RTP Multicast Sink’”
#load-module module-rtp-send source=rtp.monitor
Load additional modules from GConf settings. This can be configured with the paprefs tool.
Please keep in mind that the modules configured by paprefs might conflict with manually
loaded modules.
.ifexists module-gconf.so
.nofail
load-module module-gconf
.fail
.endif
Automatically restore the default sink/source when changed by the user
during runtime
NOTE: This should be loaded as early as possible so that subsequent modules
that look up the default sink/source get the right value
load-module module-default-device-restore
Automatically move streams to the default sink if the sink they are
connected to dies, similar for sources
load-module module-rescue-streams
Make sure we always have a sink around, even if it is a null sink.
load-module module-always-sink
Honour intended role device property
load-module module-intended-roles
Automatically suspend sinks/sources that become idle for too long
load-module module-suspend-on-idle
If autoexit on idle is enabled we want to make sure we only quit
when no local session needs us anymore.
.ifexists module-console-kit.so
load-module module-console-kit
.endif
.ifexists module-systemd-login.so
load-module module-systemd-login
.endif
Enable positioned event sounds
load-module module-position-event-sounds
Cork music/video streams when a phone stream is active
load-module module-role-cork
Modules to allow autoloading of filters (such as echo cancellation)
on demand. module-filter-heuristics tries to determine what filters
make sense, and module-filter-apply does the heavy-lifting of
loading modules and rerouting streams.
load-module module-filter-heuristics
load-module module-filter-apply
X11 modules should not be started from default.pa so that one daemon
can be shared by multiple sessions.
Load X11 bell module
#load-module module-x11-bell sample=bell-windowing-system
Register ourselves in the X11 session manager
#load-module module-x11-xsmp
Publish connection data in the X11 root window
#.ifexists module-x11-publish.so
#.nofail
#load-module module-x11-publish
#.fail
#.endif
Make some devices default
#set-default-sink output
#set-default-source input[/code]
And here is were I’ve enabled zeroconf and native tcp streaming without authentication.
As this does not affect MPD’s bit-perfect playback, it would be nice if this could be baked into an update of Volumio. As far as I understand this makes for better streaming quality than DLNA (as it doesn’t convert to a mp3 stream, just passes raw data).