Locus Sonus Streambox Arch

Prepare your SD card

Install ArchLinux ARM on SD card.
Raspberry Pi : http://archlinuxarm.org/platforms/armv6/raspberry-pi
Raspberry Pi 2: http://archlinuxarm.org/platforms/armv7/broadcom/raspberry-pi-2

Find the RPI IP address, enter ssh as root and upgrade the system.
login: root/root

pacman -Syu

Configure users

Create a new user 'locusonus' as administrator (pass: locusonus).

# create user
useradd -m -G wheel locusonus
# add password, enter `locusonus` at prompt
passwd locusonus
# add permission
chmod 755 /home/locusonus
# install sudo package
pacman -S sudo
# open sudoers file
EDITOR=nano visudo
# uncomment this line, save and exit
'%wheel ALL=(ALL) ALL'

Download and extract the streambox core files to the locusonus's home directory.

curl http://locusonus.org/streambox/download/streambox-core.tar.gz | tar xvz -C /home/locusonus
chmod +x /home/locusonus/bin/*.sh

Configure network access

Set the new hostname to 'streambox'.

hostnamectl set-hostname streambox

Install and configure the multicast Domain Name System or mDNS.

# install packages
pacman -S avahi nss-mdns
# copy ssh services
cp /home/locusonus/service/sftp-ssh.service /etc/avahi/services/
cp /home/locusonus/service/ssh.service /etc/avahi/services/
# enable the service on boot
systemctl enable avahi-daemon

Install dependencies for managing the wireless connection.

pacman -S iw wireless_tools wpa_supplicant

Install dependencies for managing IOS USB tethering.

pacman -S usbmuxd libimobiledevice ifuse

Install dependencies for managing the USB modem connection and pacth ppp connection script.

# install packages
pacman -S usb_modeswitch ppp

Install dependencies to support remote access.

pacman -S miniupnpc

Add Network services and enable the service on boot.
the streambox core files are required, see Configure users section

cp /home/locusonus/service/streambox-network.service /usr/lib/systemd/system
systemctl enable streambox-network

Install DarkIce

The streambox core files are required, see Configure users section
To build Darkice from sources, see the end of this documentation.

Install Darkice 1.2.1 and audio utils.

# for Raspberry Pi (armv6)
pacman -U /home/locusonus/darkice/darkice-1.2-1-armv6h.pkg.tar.xz
pacman -S alsa-utils alsa-plugins alsa-firmware alsa-lib
# for Raspberry Pi 2 (armv7)
pacman -U /home/locusonus/darkice/darkice-1.2-1-armv7h.pkg.tar.xz
pacman -S alsa-utils alsa-plugins alsa-firmware alsa-lib

Add DarkIce service and enable the service on boot.

cp /home/locusonus/service/streambox-darkice.service /usr/lib/systemd/system
systemctl enable streambox-darkice

Notes: the DarkIce configuration file (darkice.cfg) will be downloaded to /boot directory.

Create a virtual two-channel device

cp /home/locusonus/conf/asound.conf /etc/asound.conf

Install the web server and configure

Install the lighttpd + php packages from the official repositories.

pacman -S lighttpd fcgi php-cgi

Configure the server.

# open the server configuration file
nano /etc/lighttpd/lighttpd.conf
# change the default 'server.document-root' directory
'server.document-root    = "/home/locusonus/www"'
# add the following lines to allow lighttpd to response to cross-domain request.
# save and exit
setenv.add-response-header = ("Access-Control-Allow-Origin" => "*")
server.modules            += ("mod_setenv")

Update Lighttpd configuration for FastCGI.

# create a new directory
mkdir /etc/lighttpd/conf.d

# create a configuration file for fastCGI
nano /etc/lighttpd/conf.d/fastcgi.conf
# add the following lines, save and exit
server.modules   += ("mod_fastcgi")
index-file.names += ("index.php")
fastcgi.server    = ( 
    ".php" => (
        "localhost" => ( 
            "bin-path" => "/usr/bin/php-cgi",
            "socket" => "/tmp/php-fastcgi.sock",
            "broken-scriptfilename" => "enable",
            "max-procs" => 4,
            "bin-environment" => (
                "PHP_FCGI_CHILDREN" => "16"
            )
        )
    )
)
# link the fastCGI conf file
echo 'include "conf.d/fastcgi.conf"' >> /etc/lighttpd/lighttpd.conf

Add permissions to http (lighttpd user).

# open sudoers file
EDITOR=nano visudo
# add the following lines, save and exit
http ALL=NOPASSWD: /usr/bin/systemctl
http ALL=NOPASSWD: /usr/bin/poweroff
http ALL=NOPASSWD: /usr/bin/reboot
http ALL=NOPASSWD: /usr/bin/cp
http ALL=NOPASSWD: /usr/bin/arecord
http ALL=NOPASSWD: /usr/bin/aplay
http ALL=NOPASSWD: /usr/bin/iptables
http ALL=NOPASSWD: /home/locusonus/bin/audio.sh
http ALL=NOPASSWD: /home/locusonus/bin/network.sh

Modify some PHP configuration values.

# open PHP configuration file
nano /etc/php/php.ini
# search for each configuration variable below (ctrl+W), modify, save and exit
# change 'error_reporting' to
'error_reporting = E_ALL & ~E_NOTICE & ~E_STRICT'
# Turn on the display of errors
'display_errors = On'

Add access to the default streambox config file.
The streambox core files are required, see Configure users section. 

chown -R http:http /home/locusonus/conf

Enable the web server service on boot.

systemctl enable lighttpd

Add GPIO interface support

Install dependencies to interact with LED status display (web and on Air).
The streambox core files are required, see Configure users section

pacman -S wiringpi
cp /home/locusonus/service/streambox-statusled.service /usr/lib/systemd/system

Add Cirrus Logic/Wolfson Audio Card support (optional)

Add repository named wsp to /etc/pacman.conf configuration file.

# - open sudoers file
nano /etc/pacman.conf
# - add the following lines, save and exit
# - for Raspberry Pi (armv6)
# Cirrus Logic/Wolfson Audio Card: http://headless.audio/
[wsp]
SigLevel = Never
Server = http://headless.audio/pkg/armv6h
# - for Raspberry Pi 2 (armv7)
# Cirrus Logic/Wolfson Audio Card: http://headless.audio/
[wsp]
SigLevel = Never
Server = http://headless.audio/pkg/armv7h

Update packages database and install linux-raspberrypi-wsp package (linux-raspberrypi package replacement)

pacman -Syu
pacman -S linux-raspberrypi-wsp

Enable onboard audio interface, Cirrus Logic/Wolfson card and mmap support. mmap support is optional but required by JACK daemon.

# open the config file
nano /boot/config.txt
# uncomment the follow lines, save and exit
dtparam=audio=on
dtoverlay=i2s-mmap
dtoverlay=rpi-cirrus-wm5102

Finalize

The streambox core files are required, see Configure users section

Add statically the streambox initialization service.

cp /home/locusonus/service/streambox-init.service /usr/lib/systemd/system
ln -s /usr/lib/systemd/system/streambox-init.service /usr/lib/systemd/system/sysinit.target.wants/

Enable the streambox monitoring.

cp /home/locusonus/service/streambox-monitor.* /usr/lib/systemd/system
systemctl enable streambox-monitor.timer

Copy the empty streambox configuration file on boot for people who want to edit this file manually before starting the PI. Notes: this file will be overrided (and create if not exists) each time you save your streambox configuration from your web browser.

cp /home/locusonus/conf/streambox /boot/streambox.txt

Turn power off.

poweroff

Testing/Setup your streambox from browser

After few seconds, turn power on and log in again. Everythings should be setup / control from this adress: http://streambox.local/
or at least using his IP address directly.

Notes: from an Androïd smartphone, connect the phone to your streambox using an USB cable. Enable the tethering option from your phone settings, and use a network scan application to find your streambox address.

Build Darkice from sources (optional)

Install compilation tools

pacman -S gcc make fakeroot

Download, extract and build the package. See the 'Install DarkIce' section to complete your installation.

cd /home/locusonus
curl -O  http://sam.vis.nu/archlinux/darkice-1.2-1.src.tar.gz
pacman -S lame libpulse faac jack twolame opus libsamplerate
tar xzf darkice-1.2-1.src.tar.gz
cd darkice && makepkg

References

http://elinux.org/ArchLinux_Install_Guide https://wiki.archlinux.org/index.php/Raspberry_Pi https://wiki.archlinux.org/index.php/Pacman_Rosetta (command line equivalent) https://wiki.archlinux.org/index.php/Systemd#Using_units https://wiki.archlinux.org/index.php/Wireless_network_configuration https://wiki.archlinux.org/index.php/IPhone_Tethering https://wiki.archlinux.org/index.php/USB_3G_Modem https://wiki.archlinux.org/index.php/lighttpd http://headless.audio/