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README

Scrutinizer Code Quality

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Overview

Music player and server for ownCloud and Nextcloud. Shows audio files stored in your cloud categorized by artists and albums. Supports mp3, and depending on the browser, many other audio formats too. Supports shuffle play and playlists. The Music app also allows serving audio files from your cloud to external applications which are compatible either with Ampache or Subsonic.

The full-screen albums view: library view

Music player embedded into the files view: files view

Integration with the media control panel in Chrome: Chrome media control panel

Mobile layout and media control integration to the lock screen and notification center with Chrome on Android: Mobile layout Android lock screen Android notification center

Supported formats

  • MP3 (audio/mpeg)
  • FLAC (audio/flac)
  • Vorbis in OGG container (audio/ogg)
  • Opus in OGG container (audio/ogg or audio/opus)
  • WAV (audio/wav)
  • AAC in M4A container (audio/mp4)
  • ALAC in M4A container (audio/mp4)
  • M4B (audio/m4b)
  • AAC (audio/aac)
  • AIFF (audio/aiff)
  • AU (audio/basic)
  • CAF (audio/x-caf)

Note: The audio formats supported vary depending on the browser. Most recents versions of Chrome, Firefox and Edge should be able to play all the formats listed above. All browsers should be able to play at least the MP3 files.

Detail

The modern web browsers ship with a wide variety of built-in audio codecs which can be used directly via the standard HTML5 audio API. Still, there is no browser which could natively play all the formats listed above. For those formats not supported natively, the Music app utilizes the Aurora.js javascript library which is able to play most of the formats listed above, excluding only the OGG containers. On the other hand, Aurora.js may not be able to play all the individual files of the supported formats and is very limited in features (no seeking, no adjusting of playback speed).

Note: In order to be playable in the Music app, the file type has to be mapped to a MIME type audio/* on your cloud instance. Neither ownCloud nor Nextcloud has these mappings by default for the file types AAC, AIFF, AU, or CAF. To add these mappings, run:

./occ music:register-mime-types

Usage hints

Normally, the Music app detects any new audio files in the filesystem on application start and scans metadata from those to its database tables when the user clicks the prompt. The Music app also detects file removals and modifications on the background and makes the required database changes automatically.

If the database would somehow get corrupted, the user can force it to be rebuilt from scratch by opening the Settings (at the bottom of the left pane) and clicking the option "Reset music collection".

Commands

If preferred, it is also possible to use the command line tool for the database maintenance as described below. This may be quicker than scanning via the web UI in case of large music library, and optionally allows targeting more than one user at once.

Following commands are available(see script occ in your ownCloud root folder):

Scan music files

Scan all audio files not already indexed in the database. Extract metadata from those and insert it to the database. Target either specified user(s) or user group(s) or all users.

./occ music:scan USERNAME1 USERNAME2 ...
./occ music:scan --group=USERGROUP1 --group==USERGROUP2 ...
./occ music:scan --all

All the above commands can be combined with the --debug switch, which enables debug output and shows the memory usage of each scan step.

You can also supply the option --rescan to scan also the files which are already part of the collection. This might be necessary, if some file update has been missed by the app because of some bug or because the admin has temporarily disabled the app.

Lastly, you can give option --clean-obsolete to make the process check all the previously scanned files, and clean up those which are no longer found. Again, this is usually handled automatically, but manually running the command could be necessary on some special cases.

Reset scanned metadata

Reset all data stored to the music database. Target either specified user(s) or user group(s) or all users.

Warning: This command will erase user-created data! It will remove all playlists as playlists are linked against the track metadata.

./occ music:reset-database USERNAME1 USERNAME2 ...
./occ music:reset-database --group=USERGROUP1 --group==USERGROUP2 ...
./occ music:reset-database --all

Reset cache

Music app caches some results for performance reasons. Normally, there should be no reason to reset this cache manually, but it might be desiredable e.g. when running performance tests. Target either specified user(s) or user group(s) or all users.

./occ music:reset-cache USERNAME1 USERNAME2 ...
./occ music:reset-cache --group=USERGROUP1 --group==USERGROUP2 ...
./occ music:reset-cache --all

Ampache and Subsonic

The URL you need to connect with an Ampache-compatible player is listed in the settings and looks like this:

https://cloud.domain.org/index.php/apps/music/ampache

This is the common path. Most clients append the last part (/server/xml.server.php) automatically. If you have connection problems, try the longer version of the URL with the /server/xml.server.php appended.

Similarly, the URL used to connect with a Subsonic-compatible player is listed in the settings and looks like this:

https://cloud.domain.org/index.php/apps/music/subsonic

Authentication

Ampache and Subsonic don't use your ownCloud password for authentication. Instead, you need to use a specifically generated APIKEY with them. The APIKEY is generated through the Music app settings accessible from the link at the bottom of the left pane within the app. The generated APIKEY is shown upon creation but it is impossible to retrieve it at later time. If you forget or misplace the key, you can always delete it and generate a new one.

When you create the APIKEY, the application shows also the username you should use on your Ampache/Subsonic client. Typically, this is your ownCloud login name but it may also be an UUID in case you have set up LDAP authentication.

Installation

The Music app can be installed using the App Management in ownCloud. Instructions can be found here.

After installation, you may want to select a specific sub-folder containing your music files through the settings of the application. This can be useful to prevent unwanted audio files to be included in the music library.

Known issues

Huge music collections

The application's scalability for large music collections has gradually improved as new versions have been released. Still, if the collection is large enough, the application may fail to load. The maximum number of tracks supported depends on your server but should be more than 50'000. Also, when there are tens of thousands of tracks, switching the application views may take pretty long time. For the best performance on huge music collections, Firefox 57.0+ (aka "Quantum") is recommended. On the most recent Music app version, also up-to-date Chrome or Edge browser should perform sufficiently well.

Translations

There exist partial translations for the Music app for many languages, but all of them are very much incomplete. The application is translated at https://www.transifex.com/owncloud-org/owncloud/ but most of the strings used in the app are not currently visible on Transifex. This is because of disparity in the localization mechanisms used in the Music app and on ownCloud in general. This issue is followed at https://central.owncloud.org/t/owncloud-music-app-translations/14881 .

SMB shares

The Music app may be unable to extract metadata of the files residing on a SMB share. This is because, on some system configurations, it is not possible to use fseek() function to seek within the remote files on the SMB share. The getID3 library used for metadata extraction depends on fseek() and will fail on such systems. If the metadata extraction fails, the Music app falls back to deducing the track names from the file names and the album names from the folder names. Whether or not the probelm exists on a system, may depend on the details of the SMB support library on the host computer and the remote computer providing the share.

Development

L10n hints

Sometimes translatable strings aren't detected. Try to move the translate attribute more to the beginning of the HTML element.

Build frontend bundle

All the frontend javascript sources of the Music app, including the used vendor libraries, are bundled into a single file for deployment using webpack. This bundle file is dist/webpack.app.js. Similarly, all the style files of the Music app are bundled into dist/webpack.app.css. Downloading the vendor libraries and generating these bundles requires the npm utility, and happens by running:

cd build
npm install --deps
npm run build

The command above builds the minified production version of the bundle. To build the development version, use

npm run build-dev

To automatically regenerate the development mode bundles whenever the source .js/.css files change, use

npm run watch

Build delivery package

To build the release zip package, run the following commands. This requires the make and zip command line utilities.

cd build
make release

Install test dependencies

composer install

Run tests

Static analysis with PHPStan

composer run-script analyze

PHP unit tests

composer run-script unit-tests

PHP integration tests

The integration tests require the music app to be installed under the apps folder of an ownCloud or Nextcloud installation. The following steps assume that the cloud installation in question has not been taken into use yet, e.g. it's a fresh clone from github.

cd ../..          # owncloud/nextcloud core
./occ maintenance:install --admin-user admin --admin-pass admin --database sqlite
./occ app:enable music
cd apps/music
composer run-script integration-tests

Behat acceptance tests

cd tests
cp behat.yml.dist behat.yml
# add cloud URL and credentials for Ampache and Subsonic APIs to behat.yml
../vendor/bin/behat

For the acceptance tests, you need to upload all the tracks from the following zip file to your cloud instance: https://github.com/paulijar/music/files/2364060/testcontent.zip

API

The Music app back-end implements the Shiva API except the resources /artists/<int:artist_id>/shows, /tracks/<int:track_id>/lyrics and the meta resources. You can use this API under https://own.cloud.example.org/index.php/apps/music/api/.

However, the front-end of the Music app nowadays doesn't use any part of the Shiva API. Instead, the following proprietary REST endpoints are used:

  • /api/log
  • /api/prepare_collection
  • /api/collection
  • /api/folders
  • /api/genres
  • /api/file/{fileId}
  • /api/file/{fileId}/download
  • /api/file/{fileId}/path
  • /api/file/{fileId}/info
  • /api/file/{fileId}/details
  • /api/scanstate
  • /api/scan
  • /api/resetscanned
  • /api/cover/{hash}
  • /api/artist/{artistId}/cover
  • /api/artist/{artistId}/details
  • /api/artist/{artistId}/similar
  • /api/album/{albumId}/cover
  • /api/album/{albumId}/details
  • /api/share/{token}/{fileId}/info
  • /api/share/{token}/{fileId}/parse
  • Playlist API at /api/playlists/*
  • Radio API at /api/radio/*
  • Podcast API at /api/podcasts/*
  • Settings API at /api/settings/*

To connect external client applications, partial implementations of the following APIs are available:

/api/log

Allows to log a message to ownCloud defined log system.

POST /api/log

Parameters:

{
	"message": "The message to log"
}

Response:

{
	"success": true
}

/api/collection

Returns all artists with nested albums and each album with nested tracks. Each track carries a file ID which can be used to obtain the file path with /api/file/{fileId}/path. The front-end converts the path into playable WebDAV link like this: OC.linkToRemoteBase('webdav') + path.

GET /api/collection

Response:

[
	{
		"id": 2,
		"name": "Blind Guardian",
		"albums": [
			{
				"name": "Nightfall in Middle-Earth",
				"year": 1998,
				"disk" : 1,
				"cover": "/index.php/apps/music/api/album/16/cover",
				"id": 16,
				"tracks": [
					{
						"title": "A Dark Passage",
						"number": 21,
						"artistName": "Blind Guardian",
						"artistId": 2,
						"files": {
							"audio/mpeg": 1001
						},
						"id": 202
					},
					{
						"title": "Battle of Sudden Flame",
						"number": 12,
						"artistName": "Blind Guardian",
						"artistId": 2,
						"files": {
							"audio/mpeg": 1002
						},
						"id": 212
					}
				]
			}
		]
	},
	{
		"id": 3,
		"name": "blink-182",
		"albums": [
			{
				"name": "Stay Together for the Kids",
				"year": 2002,
				"disk" : 1,
				"cover": "/index.php/apps/music/api/album/22/cover",
				"id": 22,
				"tracks": [
					{
						"title": "Stay Together for the Kids",
						"number": 1,
						"artistName": "blink-182",
						"artistId": 3,
						"files": {
							"audio/ogg": 1051
						},
						"id": 243
					},
					{
						"title": "The Rock Show (live)",
						"number": 2,
						"artistName": "blink-182",
						"artistId": 3,
						"files": {
							"audio/ogg": 1052
						},
						"id": 244
					}
				]
			}
		]
	}
]

Creating APIKEY for Subsonic/Ampache

The endpoint /api/settings/userkey/generate may be used to programatically generate a random password to be used with an Ampache or a Subsonic client. The endpoint expects two parameters, length and description (both optional) and returns a JSON response. Please note that the minimum password length is 10 characters. The HTTP return codes represent also the status of the request.

POST /api/settings/userkey/generate

Parameters:

{
	"length": <length>,
	"description": <description>
}

Response (success):

HTTP/1.1 201 Created

{
	"id": <userkey_id>,
	"password": <random_password>,
	"description": <description>
}

Response (error - no description provided):

HTTP/1.1 400 Bad request

{
	"message": "Please provide a description"
}

Response (error - error while saving password):

HTTP/1.1 500 Internal Server Error

{
	"message": "Error while saving the credentials"
}