mpc / mpd on linux: how to play local wav file

问题:

I am trying to add a local file to mpd ( through mpc ) and play it . my platform is OpenWRT embedded linux .

so, from the man page, it states:

mpc add <file>   Add a song to the current playlist

if i do:

root@OpenWrt:~/.mpd# mpc add /usr/share/baresip/ring.wav 
error adding /usr/share/baresip/ring.wav: directory or file not found

or if i do:

root@OpenWrt:~/.mpd# mpc add file:///usr/share/baresip/ring.wav 
error adding file:///usr/share/baresip/ring.wav: Access denied

what exactly is the correct syntax here? the man page is really not very clear for mpc / mpd .

回答1:

Your second attempt was almost right. The problem you had was that mpd will only allow file: URLs to be passed to it via a local connection, which it enforces by requiring you to connect on its unix-domain socket. So, in your mpd.conf you need to have a line like this:

bind_to_address     "/run/mpd/socket"

(depending on your system you may want to change /run to /var/run -- the version I quote is correct for recent versions of debian or ubuntu but others may be different).

Then, you need to set up your environment to point to that socket:

export MPD_HOST=/run/mpd/socket

when you do this, mpc add or mpc insert can successfully accept a file: URL:

$ mpc insert "file:///data/incoming/files/111_scorpions_-_the_zoo.mp3"
$ mpc next
Scorpions - The Zoo
[playing] #23/39   0:00/5:30 (0%)
volume: n/a   repeat: off   random: off   single: off   consume: off
$

回答2:

i did not find out how to play wav..but i forgot i found the solution (for mp3) and posted it here: https://forum.openwrt.org/viewtopic.php?id=41022

however, since stackoverflow always shows up top on google search i am pasting the same solution here in case it helps someone as well :

/etc/mpd.conf should be something approximately like this:

music_directory        "/tmp"
playlist_directory        "~/.mpd/playlists"
db_file            "~/.mpd/database"
log_file            "/tmp/mpdlog"
pid_file            "~/.mpd/pid"
state_file            "~/.mpd/state"
sticker_file            "~/.mpd/sticker.sql"

user                "root"
group                "root"
bind_to_address "127.0.0.1"


log_level            "verbose"
auto_update    "yes"
auto_update_depth "3"
follow_outside_symlinks    "yes"
follow_inside_symlinks        "yes"

and then:

1. /etc/init.d/mpd restart
2. copy MP3 ( wav does not seem to work ) file to /tmp folder ( because music directory is the /tmp folder )
3. mpc update
4. mpc add file.mp3 ( adding /tmp/file.mp3 will NOT work )
5. mpc play