supysonic/docs/configuration.md

Configuration

Supysonic looks for four files for its configuration: /etc/supysonic, ~/.supysonic, ~/.config/supysonic/supysonic.conf and supysonic.conf in the current folder, merging values from all files.

Configuration files must respect a structure similar to Windows INI file, with [section] headers and using a KEY = VALUE or KEY: VALUE syntax.

You'll find a roughly documented configuration sample file at the root of the project, file conveniently named config.sample. More details below.

There are six sections in the configuration:

• base: defines the database and additional scanning config
• webapp: configuration relative to the HTTP server
• daemon: configuration for the scanning file watcher
• lastfm: keys to enable Last.FM scrobbling
• transcoding: defines transcoding programs
• mimetypes: some file extension to mimetype mappings

[base] section

database_uri: the most important configuration, defines the type and parameters of the database Supysonic should connect to. It usually includes username, password, hostname and database name. The typical form of a database URI is:

driver://username:password@host:port/database

If the connection needs some additional parameters, they can be provided as a query string, such as:

driver://username:password@host:port/database?param1=value1&param2=value2

Supported drivers are sqlite, mysql and postgres (or postgresql).

As SQLite connects to local files, the format is slightly different. The "file" portion of the URI is the filename of the database. For a relative path, it requires three slashes, for absolute paths it's also three slashes followed by the absolute path, meaning actually four slashes on Unix systems.

; Relative path
database_uri = sqlite:///relative-file.db
; Absolute path on Unix-based systems
database_uri = sqlite:////home/user/supysonic.db
; Absolute path on Windows
database_uri = sqlite:///C:\Users\user\supysonic.db

A MySQL-compatible database requires either MySQLdb or pymysql to be installed. PostgreSQL needs psycopg2. Note that for MySQL if no character set is defined on the URI it defaults to utf8mb4 regardless of what's set on your MySQL installation.

If database_uri isn't provided, it defaults to a SQLite database stored in /tmp/supysonic/supysonic.db.

scanner_extensions: A space separated list of file extensions the scanner is restricted to. Useful if you have multiple audio formats in your library but only want to serve some. If left empty, the scanner will try to read every file it finds.

[base]
; A database URI. See the 'schema' folder for schema creation scripts
; Default: sqlite:////tmp/supysonic/supysonic.db
database_uri = sqlite:////var/supysonic/supysonic.db
;database_uri = mysql://supysonic:supysonic@localhost/supysonic
;database_uri = postgres://supysonic:supysonic@localhost/supysonic

; Optional, restrict scanner to these extensions. Default: none
scanner_extensions = mp3 ogg

[webapp] section

cache_dir: directory used to store generated files, such as resized cover art or transcoded files. Defaults to /tmp/supysonic.

cache_size: maximum size (in megabytes) of the cache (except for trancodes). Defaults to 512 MB

transcode_cache_size: maximum size (in megabytes) of the transcode cache. Defaults to 1024 MB (1 GB)

log_file: rotating file where some events generated by the web server are logged. Leave empty to disable logging.

log_level: defines the minimum severity threshold of messages to be added to log_file. Possible values are: DEBUG, INFO, WARNING, ERROR and CRITICAL. Defaults to WARNING.

mount_api: [on/off] enable or disable the Subsonic REST API. Should be kept on or Supysonic would be quite useless. Exists mostly for testing purposes. Defaults to on.

mount_webui: [on/off] enable or disable the administrative web interface. Note that setting this off will prevent users from defining a preferred transcoding format. Defaults to on.

[webapp]
; Optional cache directory. Default: /tmp/supysonic
cache_dir = /var/supysonic/cache

; Main cache max size in MB. Default: 512
cache_size = 512

; Transcode cache max size in MB. Default: 1024 (1GB)
transcode_cache_size = 1024

; Optional rotating log file. Default: none
log_file = /var/supysonic/supysonic.log

; Log level. Possible values: DEBUG, INFO, WARNING, ERROR, CRITICAL.
; Default: WARNING
log_level = WARNING

; Enable the Subsonic REST API. You'll most likely want to keep this on.
; Here for testing purposes. Default: on
;mount_api = on

; Enable the administrative web interface. Default: on
;mount_webui = on

[daemon] section

wait_delay: delay before triggering the scanning operation after a change have been detected. This prevents running too many scans when multiple changes are detected for a single file over a short time span. Default: 5 seconds.

log_file: rotating file where events generated by the file watcher are logged. If left empty, any logging will be sent to stderr.

log_level: defines the minimum severity threshold of messages to be added to log_file. Possible values are: DEBUG, INFO, WARNING, ERROR and CRITICAL. Defaults to WARNING.

[daemon]
; Delay before triggering scanning operation after a change have been detected
; This prevents running too many scans when multiple changes are detected for a
; single file over a short time span. Default: 5
wait_delay = 5

; Optional rotating log file for the scanner daemon. Logs to stderr if empty
log_file = /var/supysonic/supysonic-daemon.log
log_level = INFO

[lastfm] section

This section allow defining API keys to enable Last.FM integration in Supysonic. Currently it is only used to scrobble played tracks and update the now playing information. See https://www.last.fm/api to obtain such keys. Once keys are set, users have to link their account by visiting their profile page on Supysonic's administrative UI.

api_key: Last.FM API key

secret: secret key associated to the API key

[lastfm]
; API and secret key to enable scrobbling. http://www.last.fm/api/accounts
; Defaults: none
;api_key =
;secret =

[transcoding] section

This section defines command-line programs to be used to convert an audio file to another format or change its bitrate. All configurations in the sample below have not been thoroughly tested. For more details, please refer to the transcoding configuration.

[transcoding]
; Programs used to convert from one format/bitrate to another. Defaults: none
transcoder_mp3_mp3 = lame --quiet --mp3input -b %outrate %srcpath -
transcoder = ffmpeg -i %srcpath -ab %outratek -v 0 -f %outfmt -
decoder_mp3 = mpg123 --quiet -w - %srcpath
decoder_ogg = oggdec -o %srcpath
decoder_flac = flac -d -c -s %srcpath
encoder_mp3 = lame --quiet -b %outrate - -
encoder_ogg = oggenc2 -q -M %outrate -

[mimetypes] section

Use this section if the system Supysonic is installed on has trouble guessing the mimetype of some files. This might only be useful in some rare cases.

See the following links for a list of examples:

• https://en.wikipedia.org/wiki/Media_type#Common_examples
• https://www.iana.org/assignments/media-types/media-types.xhtml

[mimetypes]
; Extension to mimetype mappings in case your system has some trouble guessing
; Default: none
;mp3 = audio/mpeg
;ogg = audio/vorbis