Music Player Daemon - Commands
WARNING
This document has not been updated to reflect recent changes in
the MPD protocol. It does not contain all supported commands,
and some commands may now take additional arguments. However,
clients conforming to this specification should still be
compatible with the latest release of MPD. For more up to date
documentation, please see the protocol reference on the wiki at
<http://mpd.wikia.com/wiki/Protocol_Reference>.
This document is intended for client developers, not end users.
Format:
-------
If arguments contain spaces, they should be surrounded by double quotation
marks, ".
command <type arg1> <type arg2> ...
explanation: w/ arg1 and arg2
All data between the client and server is encoded in UTF-8. (Note,
that in UTF-8 all standard ansi characters, 0-127, are the same as a standard
ansi encoding. Also, no ansi character appears in any multi-byte
characters. So, you can use standard C functions like strlen, and strcpy
just fine with UTF-8 encoded strings. For example: "OK\n" encoded in UTF-8 is
simply "OK\n". For more information on UTF=8:
http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 )
Command Completion:
-------------------
A command returns "OK\n" on completion or "ACK some error\n" on failure.
These denote the end of command execution.
NOTE:
-----
For manipulating playlists and playing, there are two sets of commands. One
set uses the song id of a song in the playlist, while another set uses the
playlist position of the song. The commands using song id's should be used
instead of the commands that manipulate and control playback based on playlist
position. Using song id's is a safer method when multiple clients are
interacting with MPD.
Commands:
---------
add <string path>
add the file _path_ to the playlist (directories add recursively)
_path_ can also be a single file
increments playlist version by for each song added
addid <string path> <int position>
_path_ is always a single file or URL
_position_ is optional, a negative number means it is relative
to the currently playing song in the playlist (if there is one)
adds a song to the playlist (non-recursive) and returns the song id;
example:
addid "foo.mp3"
Id: 999
OK
clear
clears the current playlist
increments playlist version by 1
clearerror
clear the current error message in status
(this is also accomplished by any command that starts playback)
close
close the connection with the MPD
crossfade <int seconds>
sets crossfading between songs
currentsong
displays the song info of current song (same song that is identified
in status)
delete <int song>
delete _song_ from playlist
increments playlist version by 1
deleteid <int songid>
delete song with _songid_ from playlist
increments playlist version by 1
find <string type> <string what>
finds songs in the db that are exactly _what_
_type_ should be "album", "artist", or "title"
_what_ is what to find
kill
kill MPD
list <string type> <string arg1>
list all tags of _type_
_type_ should be "album" or "artist"
_arg1_ is an optional parameter when type is album, this specifies
to list albums by a artist, where artist is specified with
arg1
listall <string path>
lists all songs and directories in _path_ (recursively)
_path_ is optional and maybe a directory or path
listallinfo <string path>
same as listall command, except it also returns metadata info
in the same format as lsinfo
load <string name>
loads the playlist _name_.m3u from the playlist directory
increments playlist version by the number of songs added
lsinfo <string directory>
list contents of _directory_, from the db. _directory_ is optional
move <int from> <int to>
move song at _from_ to _to_ in the playlist
increments playlist version by 1
moveid <int songid> <int to>
move song with _songid_ to _to_ in the playlist
increments playlist version by 1
if _to_ is negative, it is relative to the current song in
the playlist (if there is one).
next
plays next song in playlist
pause <bool pause>
toggle pause/resume playing
_pause_ is required and should be 0 or 1
NOTE: use of pause command w/o the _pause_ argument is deprecated
password <string password>
this is used for authentication with the server.
_password_ is simply the plaintext password
ping
does nothing but return "OK"
play <int song>
begin playing playlist at song number _song_, _song_ is optional
playid <int songid>
begin playing playlist at song with _songid_, _songid_ is optional
playlist
displays the current playlist
NOTE: do not use this, instead use 'playlistinfo'
playlistinfo <int song>
displays list of songs in the playlist
_song_ is optional and specifies a single song to display info for
playlistid <int songid>
displays list of songs in the playlist
_songid_ is optional and specifies a single song to display info for
plchanges <playlist version>
displays changed songs currently in the playlist since
_playlist version_
NOTE: to detect songs that were deleted at the end of the playlist,
use playlistlength returned by status command.
plchangesposid <playlist version>
displays changed songs currently in the playlist since
_playlist version_
This function only returns the position and the id of the changed song, not the complete metadata. This is more bandwidth efficient.
NOTE: to detect songs that were deleted at the end of the playlist,
use playlistlength returned by status command.
previous
plays previous song in playlist
random <int state>
set random state to _state_, _state_ should be 0 or 1
repeat <int state>
set repeat state to _state_, _state_ should be 0 or 1
rm <string name>
removes the playlist <name>.m3u from the playlist directory
save <string name>
saves the current playlist to _name_.m3u in the playlist directory
search <string type> <string what>
searches for any song that contain _what_
_type_ can be "title","artist","album", or "filename"
search is not case sensitive
seek <int song> <int time>
seeks to the position _time_ (in seconds) of entry _song_ in the
playlist
seekid <int songid> <int time>
seeks to the position _time_ (in seconds) of song with _songid_
setvol <int vol>
set volume to _vol_
_vol_ the range of volume is 0-100
shuffle
shuffles the current playlist
increments playlist version by 1
stats
display stats
artists: number of artists
albums: number of albums
songs: number of songs
uptime: daemon uptime in seconds
db_playtime: sum of all song times in db
db_update: last db update in UNIX time
playtime: time length of music played
status
reports current status of player, and volume level.
volume: (0-100).
repeat: (0 or 1)
playlist: (31-bit unsigned integer, the playlist version number)
playlistlength: (integer, the length of the playlist)
state: ("play", "stop", or "pause")
song: (current song stopped on or playing, playlist song number)
songid: (current song stopped on or playing, playlist songid)
time: <int elapsed>:<time total> (of current playing/paused song)
bitrate: <int bitrate> (instantaneous bitrate in kbps)
xfade: <int seconds> (crossfade in seconds)
audio: <int sampleRate>:<int bits>:<int channels>
updatings_db: <int job id>
error: if there is an error, returns message here
stop
stop playing
swap <int song1> <int song2>
swap positions of _song1_ and _song2_
increments playlist version by 1
swapid <int songid1> <int songid2>
swap positions of of songs with song id's of _songid1_ and _songid2_
increments playlist version by 1
update <string path>
searches mp3 directory for new music and removes old music from the db
_path_ is an optional argument that maybe a particular directory or
song/file to update.
returned:
updating_db: <int job id>
where job id, is the job id requested for your update, and is displayed
in status, while the requested update is happening
increments playlist version by 1
NOTE: To update a number of paths/songs at once, use command_list,
it will be much more faster/efficient. Also, if you use a
command_list for updating, only one update_db job id will be returned
per sequence of updates.
volume <int change>
change volume by amount _change_
NOTE: volume command is deprecated, use setvol instead
idle
Waits until there is a noteworthy change in one or more of
MPD's subsystems. As soon as there is one, it lists all
changed systems in a line in the format "changed: SUBSYSTEM",
where SUBSYSTEM is one of the following:
database: the song database has been updated
stored_playlist: a stored playlist has been modified, renamed,
created or deleted
playlist: the current playlist has been modified
player: the player has been started, stopped or seeked
mixer: the volume has been changed
output: an audio output has been enabled or disabled
options: options like "repeat", "random", "crossfade"
While a client waits for "idle" results, the server disables
timeouts, allowing a client to wait for events as long as mpd
runs. The "idle" command can be canceled by sending the
command "noidle" (no other commands are allowed). MPD will
then leave "idle" mode and print results immediately; might be
empty at this time.
COMMAND LIST
------------
To facilitate faster adding of files, etc, you can pass a list of commands all
at once using a command list. The command list beings with:
command_list_begin
or:
command_list_ok_begin
And ends with:
command_list_end
It does not execute any commands until the list has ended. The return
value is whatever the return for a list of commands is. On success
for all commands, OK is returned. If a command fails, no more commands
are executed and the appropriate ACK error is returned. If
"command_list_ok_begin is used", "list_OK\n" is returned for each
successful command executed in the command list.
