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Playlist Automation

What is this?

This is a php web app to generate smart playlists and start playlist by timetable. Developed by using a Raspberry Pi 3 but usable on every Ubuntu / Debian platform.

The Software generates Playlists by use a folder structure on the harddisk, filled with mp3 files. The Randomness will be affected by the age of the files, by a hot rotation of the newest files, and spots and podcast every nth tracks. At the time only Deutschlandfunk / DRadio podcasts are usable. The Podcast files will be downloaded and stored on the harddisk. And playlists or shows can be scheduled. They can start automatically by time and weekday. All data will be stored in json files. No Database needed.

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Hardware

  • Raspberry Pi 3
  • External 2.5 Harddisk
  • USB-Hub with 2.5 Amps Power

Software

  • This Web App, Scripts and System Configuration
  • Apache 2, Webserver
  • PHP 5 for Apache
  • MPD, Music Player Deamon
  • MPC, Music Player Client
  • Icecast 2, Streaming Server
  • NTP, Time Server Client

Install all Dependencies

sudo apt-get install icecast2 mpd mpc apache2 php5 ntp

Create Folders an get repository

sudo mkdir /data
cd /data
sudo git clone https://github.com/seekwhencer/Playlist-Automation.git
sudo mv Playlist-Automation radio

sudo mkdir /data/web
sudo mkdir /data/web/root
sudo mkdir /data/web/root/htdocs
sudo mkdir /data/web/home
sudo mkdir /data/web/home/htdocs

sudo chown -R pi:pi /data
sudo chmod -R 776 /data

Install Harddrive

  • Check device name Get the devicename from the plugged harddrive. It is important, to get the right one!
blkid
  • Format disk (attention) The vfat format is readable by Windows. Replace the ???? with your device name. It could be 'sda2' or so...
sudo mkfs.vfat /dev/???? -n drivename
  • Create directories on SD
sudo mkdir /external
sudo mkdir /external/hdd
sudo chown -R pi:pi /external
  • Edit radio fstab
sudo nano /data/radio/script/fstab/hdd
  • Edit line, replace sda1 with your right one device name
/dev/sda1       /external/hdd   vfat    defaults,umask=000      0       0

Configure Icecast

sudo nano /etc/icecast2/icecast.xml
  • Replace the hostename and passwords
<source-password>changeme</source-password>
<relay-password>changeme</relay-password>
<admin-password>changeme</admin-password>
<port>8000</port>
<hostname>changeme</hostname>
  • Reload Icecast Config
sudo /etc/init.d/icecast2 reload

Configure MPD

sudo mv /etc/mpd.conf /data/radio/scripts/conf/mpd.conf
sudo nano /data/radio/scripts/conf/mpd_playlist.conf
  • Use this
playlist_directory   "/data/radio/htdocs/data/playlist"
music_directory      "/external"
user                 "pi"
db_file              "/data/radio/script/conf/mpd.cache"
pid_file             "/data/radio/script/conf/mpd_playlist.pid"
buffer_before_play   "30%"
port                 "6600"

log_level            "default"
log_file             "/data/radio/script/conf/mpd_playlist.log"

bind_to_address      "127.0.0.1"

audio_output {
    type        "shout"
    encoding    "mp3"
    name        "NFS One Playlist"
    host        "localhost"
    port        "8000"
    mount       "/playlist"
    password    "changeme"
    bitrate     "128"
    format      "44100:16:2"
}

audio_output {
    type "alsa"
    name "fake out"
    driver "null"
}
  • Replace user to pi:pi in
sudo nano /etc/init.d/mpd
  • Disable MPD on system start
sudo update-rc.d mpd disable

Configure Apache

  • Move site config to apache folder
sudo cp /data/radio/scripts/conf/radio.conf /etc/apache2/sites-enabled/servername.conf
  • Remove default apache host
sudo unlink /etc/apache2/sites-enabled/000-default.conf
  • Edit site config
sudo nano /etc/apache2/sites-enabled/servername.conf
  • Change
ServerName servername
  • PHP.ini
sudo nano /etc/php5/apache2/php.ini
  • Change
max_execution_time = 3600
short_open_tag = On
error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT
date.timezone = Europe/Berlin
  • Apache envvars
sudo nano /etc/apache2/envvars
  • Change
export APACHE_RUN_USER=pi
export APACHE_RUN_GROUP=pi
  • Active mod rewrite
sudo a2enmod rewrite
  • Apache config
sudo nano /etc/apache2/apache.config
  • Change
#<Directory />
#       Options FollowSymLinks
#       AllowOverride None
#       Require all denied
#</Directory>

#<Directory /usr/share>
#       AllowOverride None
#       Require all granted
#</Directory>

#<Directory /var/www/>
#       Options Indexes FollowSymLinks
#       AllowOverride None
#       Require all granted
#</Directory>

#<Directory /srv/>
#       Options Indexes FollowSymLinks
#       AllowOverride None
#       Require all granted
#</Directory>
memory_limit = 256M
max_execution_time
max_input_time

Ramdisk

sudo mkdir /mnt/RAMDisk
sudo chown pi:pi -R /mnt/RAMDisk
sudo chmod 777 -R /mnt/RAMDisk

Cronjobs

  • open crontab
sudo crontab -e
  • add this
*/1 * * * * sh /data/radio/script/save_mpd_status.sh
*/1 * * * * sh /data/radio/script/save_icecast_status.sh" servername
*/1 * * * * sh /data/radio/script/schedule.sh servername
*/1 * * * * sh /data/radio/script/update_stream_meta.sh servername
0 */1 * * * sh /data/radio/script/podcast.sh servername

save_mpd_status.sh, save_icecast_status.sh and update_stream_meta.sh are fast loops under 2 Seconds. They writes not on the SD - but into the Ramdisk. The Ramdisk is the File Store for the latest Infos. Icecast has a JSON Output for this. The Infos for MPD is the Output from MPC.

The Apache and PHP read this Outputs if needed. That means that no Web-Request to get a Status goes directly to MPD or to Icecast. The Cronjobs collect this Status Informations permanently and make it readable for PHP.

schedule.sh and podcast.sh are the Cronjob Pages from the Web App.

The servername is what you entered at ServerName in apache's enabled site configuration: /etc/apache2/sites-enabled/servername.conf

Time with Internet Connection

  • Open NTP config
sudo nano /etc/ntp.conf
  • Comment out the existing servers and add these:
server 0.de.pool.ntp.org
server 1.de.pool.ntp.org
server 2.de.pool.ntp.org
server 3.de.pool.ntp.org
  • Restart NTP
sudo /etc/init.d/ntp restart
  • Or set the Date and Time manually
service ntp stop
sudo ntpd -gq
sudo service ntp start

Startup

  • Open rc.local
sudo nano /etc/rc.local
  • Add this BEFORE exit 0
sudo sh /data/radio/script/start.sh &
  • Now - reboot:
sudo shutdown -r now

Configure Web App

sudo nano /source/conf/app.php
  • Change
'page_name'         => 'Change Me', 
'page_claim'        => 'Radio',
'path_data'         => 'data/',
'station_config'    => 'station_config.json',
'user_secret'       => 'change!me',

Web App Urls

  • Home Screen
http://yourhost/radio
  • Login
http://yourhost/radio/login
  • Show Edit
http://yourhost/radio/admin/show
  • Scheduling Edit
http://yourhost/radio/admin/schedule
  • Podcast Edit
http://yourhost/radio/admin/podcast
  • Config Edit
http://yourhost/radio/admin/config
  • Cronjobs
http://yourhost/radio/admin/schedule/cron
http://yourhost/radio/admin/podcast/cron

Grunt, Bower workflow (not a must, but it's better)

You can use this Software as you will. I'm using the Workflow Tools: Grunt and Bower. After you got the Sources, make these Steps. After that, you have three Folders:

/data/radio/htdocs
/data/radio/build
/data/radio/src

'htdocs' are the online build. untouched configs and data (shows, podcasts, etc.). 'build' are the src plus dependencies. 'src' are the main source - on this folder we are working.

A 'grunt watch' and 'grunt export' generates the build and htdocs folder. The 'htdocs/data' will be written from the Web App and not overwritten from 'grunt watch' or 'grunt export'.

Take a look in the Gruntfile.js.

  • Install Node Packet Manager
sudo apt-get install nodejs npm
  • one time, for the first time
npm install bower -g
  • change into directory
cd /data/radio
  • Install Grunt Modules
npm install grunt --save-dev
npm install grunt-contrib-jshint --save-dev
npm install grunt-contrib-less --save-dev
npm install grunt-contrib-watch --save-dev
npm install grunt-bower-task --save-dev
npm install grunt-bowercopy --save-dev
npm install grunt-contrib-csslint --save-dev
npm install grunt-sync --save-dev
npm install grunt-google-fonts --save-dev
  • Watch the src folder
grunt watch
  • Export and fetch newest dependencies into the htdocs folder
grunt export

It is important to work on the src folder, not on the htdocs folder. The grunt watch task syncs the src with the htdocs folder and overwrites every changes in htdocs. If you're working on the sources, use the src folder and let a grunt watch task to do this job. If no grunt watch task is running, you can use grunt export to sync manually.

Wifi Access Point with onboard Wifi (since Pi3)

To use the Web-App on a smartphone or tablet - set up a Wifi Access Point and connect to it. Then call the URL: http://yourhost/radio.

To catch all hosts to 25.25.25.1, use the dnsmasq "address" parameter. When you are connected to the access point, enter some url in the browser. You will be redirected to the unhidden main menu.

It exists the folder /data/web/root/htdocs - this is the catch all target and documentroot of port 80 (http://yourhost). Simply a redirect from this to http://yourhost/home changes the base url. In /data/web/home/htdocs are the unhidden main menu. On this page you will find some jump buttons: radio home, radio admin (login), icecast status and the direct link to listen directly in the browser.

Actually there are no web data in this project for the unhidden radio pi menu!

  • Edit network interfaces
sudo nano /etc/network/interfaces
  • Use this for wlan0
allow-hotplug wlan0
auto wlan0
iface wlan0 inet static
 address 25.25.25.1
 netmask 255.255.255.0
 broadcast 25.25.25.255
 post-up sudo hostapd -B /data/radio/script/conf/hostapd.conf > /dev/null; sleep 5; sudo service dnsmasq restart &
 down sudo killall hostapd
  • Install hostapd and dnsmasq
sudo apt-get install hostapd dnsmasq
  • Disable hostapd service
sudo update-rc.d hostapd disable
sudo update-rc.d dnsmasq disable
  • Edit hostapd.conf from this repo
sudo nano /data/radio/script/conf/hostapd.conf
  • Change
wpa_passphrase
  • Edit dnsmasq config
sudo nano /etc/dnsmasq.conf
  • Change
interface=wlan0
dhcp-range=25.25.25.50,25.25.25.150,12h
address=/#/25.25.25.1
  • Edit DHCPD config
sudo nano /etc/dhcpcd.conf
  • Add on bottom
denyinterfaces wlan0
nohook resolv.conf
  • Enable IP4 Forwarding on next reboot
sudo nano /etc/sysctl.conf
  • Change (uncomment)
net.ipv4.ip_forward=1
  • Remove default apache host
sudo unlink /etc/apache2/sites-enabled/000-default.conf
  • Create Nameserver resolv.conf.head to prepend your nameserver (router)

In this case we use eth0 for WAN. So dnsmasq changes at start the resolv.conf and you have to add your WAN gateway here. Otherwise (if not and dnsmasq is running) the pi has no web. No Time Sync and no Podcasts. If you dont know your Gateway IP, take a look into the /etc/resolv.conf when dnsmasq isn't running.

sudo nano /etc/resolv.conf.head
  • add ip from your gateway 192.168.2.1 is the default for a German Telekom Speedport WAN. Use your own.
nameserver 192.168.2.1

Finally

  • Reboot
sudo reboot

How to update

  • create backup folder for the first time
mkdir /data/backup
mkdir /data/backup/radio
mkdir /data/backup/radio/htdocs
mkdir /data/backup/radio/script
  • backup the data from the webapp
cp -R /data/radio/htdocs/data /data/backup/radio/htdocs/data
cp -R /data/radio/script/conf /data/backup/radio/script/conf
  • download fresh repository from github
cd /data
sudo git clone https://github.com/seekwhencer/Playlist-Automation.git
sudo mv radio radio_
sudo mv Playlist-Automation radio
sudo chmod 776 -R radio
sudo chown pi:pi -R radio
  • restore backup data
cp -R /data/backup/radio/htdocs/data /data/radio/htdocs/data 
cp -R /data/backup/radio/script/conf /data/radio/script/conf

Web App - Urls

  • Home Screen
http://yourhost/radio
  • Login
http://yourhost/radio/login
  • Show Edit
http://yourhost/radio/admin/show
  • Scheduling Edit
http://yourhost/radio/admin/schedule
  • Podcast Edit
http://yourhost/radio/admin/podcast
  • Config Edit
http://yourhost/radio/admin/config
  • Cronjobs
http://yourhost/radio/admin/schedule/cron
http://yourhost/radio/admin/podcast/cron

Show Settings

  • Name
  • Folder
  • Recursive
  • Description
  • Color
  • No Shuffle

Hot Rotation

  • Enable
  • Only
  • Latest Tracks
  • At Beginning
  • Shuffle Beginning
  • Song Age Days
  • Insert Multiplier

Podcast

  • Folder
  • Every Nth Song
  • Offset
  • Latest Tracks
  • Random First

Spots

  • Folder
  • Every nth Song
  • Offset
  • Shuffle Beginning (if not order shuffle)
  • Order
  • Order By (if order)

Intro

  • Folder
  • Random

Features & History

June 2016:

  • set the Date and Time with Web UI
  • set Icecast Stream Meta infos periodically, with parameters
  • set Stream Meta Description for Shows
  • dnsmasq resolv head for dhcpd
  • Web UI Home, displaying now playing Show and Track, displaying the %-Seek of the Track and the Plan for Today

Initial:

  • create Shows and map it to Folder (recursive or not) filled with mp3 Files
  • add Opener, Spots and Podcasts to the Show with different parameters like interval, offset, order etc.
  • add Hot Rotation to Shows, that means the newest Files in the Folder will played more frequently - with parameters
  • manage Podcasts (actually: DRadio, Germany)
  • schedule Shows, create a Week Plan and point Shows to Weekday, Hour and Minute
  • configure the most and a lot Setup Parameters (like Folder Paths)
  • login with Password (User Secret)

Future

  • live Source as Show
  • live Source instant Toggle
  • talk over, mixing live source with playlist source
  • set stream volume
  • disable Scheduling
  • Bluetooth Speaker Support and BT Configuration via Web UI
  • More responsive Web UI Support for Smartphones
  • Refactoring

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