]>
git.wh0rd.org - chrome-ext/music-player-client.git/blob - js/mpc.js
1 // Written by Mike Frysinger <vapier@gmail.com>. Released into the public domain. Suck it.
3 function Mpc(socket
, cb_update_state
, debug_enabled
) {
5 this._cb_update_state
= cb_update_state
;
6 this._debug_enabled
= debug_enabled
;
7 this._queue
= ['init'];
11 Mpc
.prototype.log = function(lvl
, msg
, obj
) {
12 if (this._debug_enabled
& lvl
)
13 console
.log('mpc: ' + msg
, obj
);
16 Mpc
.prototype.err = function(msg
, obj
) {
17 console
.error('mpc: ' + msg
, obj
);
20 Mpc
.prototype.set_debug = function(val
) {
21 this._debug_enabled
= val
;
24 Mpc
.prototype.send = function(msg
) {
26 this._queue
.push(msg
);
27 this._socket
.send(msg
, function(x
) {
28 _this
.log(0x1, 'send: ' + msg
+ ':', x
);
32 Mpc
.prototype.recv_msg = function(lines
) {
33 curr
= this._queue
.shift();
34 this.log(0x2, 'recv: [' + curr
+ ']:', lines
.join('\n'));
35 curr
= curr
.split(' ');
38 // Needs to return a list of dicts (see above for dicts).
39 //case 'playlistinfo':
45 lines
.forEach(function(line
) {
46 i
= line
.indexOf(':');
48 return; // Ignores the OK line
49 key
= line
.substr(0, i
);
51 val
= line
.substr(i
+ 2);
55 // When mpd is stopped, it gives us back crap values for some things.
56 if ('state' in state
&& state
.state
== 'stop') {
57 if ('volume' in state
&& state
.volume
== '-1')
58 keys
.splice(keys
.indexOf('volume'), 1);
60 // Now merge the current state with the previous one so that we don't
61 // lose information like volume or song position.
62 curr_state
= this.state
;
63 keys
.forEach(function(key
) {
64 curr_state
[key
] = state
[key
];
67 this._cb_update_state(curr_state
);
70 this._cb_update_state(lines
, curr
);
75 Mpc
.prototype.recv = function(msg
) {
76 /* We can get back a bunch of responses in a row, so parse them out */
77 /* XXX: Do we have to handle partial reads ? like long playlists ... */
78 lines
= msg
.split('\n');
80 while (i
< lines
.length
) {
81 if (lines
[i
] == 'OK' || lines
[i
].substr(0, 3) == 'OK ') {
82 this.recv_msg(lines
.splice(0, i
+ 1));
90 * Command generator helpers.
93 Mpc
.__make_send_void = function(cmd
) {
94 return function() { this.send(cmd
); }
97 Mpc
.__make_send_arg1 = function(cmd
) {
100 this.err(cmd
+ ': function requires one argument');
102 this.send(cmd
+ ' ' + a1
);
106 Mpc
.__make_send_arg2 = function(cmd
) {
107 return function(a1
, a2
) {
108 if (a1
=== undefined || a2
=== undefined)
109 this.err(cmd
+ ': function requires two arguments');
111 this.send(cmd
+ ' ' + a1
+ ' ' + a2
);
115 Mpc
.__make_send_opt = function(cmd
) {
116 return function(arg
) {
117 if (arg
=== undefined)
119 this.send(cmd
+ ' ' + arg
);
123 Mpc
.__make_send_range = function(cmd
, min
, max
, def
) {
124 return function(arg
) {
125 if (arg
=== undefined)
127 if (arg
>= min
&& arg
<= max
)
128 this.send(cmd
+ ' ' + arg
);
130 this.err(cmd
+ ': arg must be [' + min
+ ',' + max
+ '] but got "' + arg
+ '"');
135 * Querying MPD's status
136 * http://www.musicpd.org/doc/protocol/ch03.html#idp118752
140 Mpc
.prototype.clearerror
= Mpc
.__make_send_void('clearerror');
142 Mpc
.prototype.currentsong
= Mpc
.__make_send_void('currentsong');
143 // idle [SUBSYSTEMS...]
146 Mpc
.prototype.status
= Mpc
.__make_send_void('status');
148 Mpc
.prototype.stats
= Mpc
.__make_send_void('stats');
152 * http://www.musicpd.org/doc/protocol/ch03s02.html
156 Mpc
.prototype.consume
= Mpc
.__make_send_range('consume', 0, 1, 1);
157 // crossfade {SECONDS}
158 Mpc
.prototype.crossfade
= Mpc
.__make_send_arg1('crossfade');
159 // mixrampdb {deciBels}
160 Mpc
.prototype.mixrampdb
= Mpc
.__make_send_arg1('mixrampdb');
161 // mixrampdelay {SECONDS|nan}
162 // Note: Probably should handle javascript NaN here.
163 Mpc
.prototype.mixrampdelay
= Mpc
.__make_send_arg1('mixrampdelay');
165 Mpc
.prototype.random
= Mpc
.__make_send_range('random', 0, 1, 1);
167 Mpc
.prototype.repeat
= Mpc
.__make_send_range('repeat', 0, 1, 1);
169 Mpc
.prototype.setvol
= Mpc
.__make_send_range('setvol', 0, 100);
171 Mpc
.prototype.single
= Mpc
.__make_send_range('single', 0, 1, 1);
172 // replay_gain_mode {MODE}
173 Mpc
.prototype.replay_gain_mode
= Mpc
.__make_send_arg1('replay_gain_mode');
174 // replay_gain_status
177 * Controlling playback
178 * http://www.musicpd.org/doc/protocol/ch03s03.html
182 Mpc
.prototype.next
= Mpc
.__make_send_void('next');
184 Mpc
.prototype.pause
= Mpc
.__make_send_range('pause', 0, 1, 1);
186 Mpc
.prototype.play
= Mpc
.__make_send_opt('play');
188 Mpc
.prototype.playid
= Mpc
.__make_send_opt('playid');
190 Mpc
.prototype.previous
= Mpc
.__make_send_void('previous');
191 // seek {SONGPOS} {TIME}
192 Mpc
.prototype.seek
= Mpc
.__make_send_arg2('seek');
193 // seekid {SONGID} {TIME}
194 Mpc
.prototype.seekid
= Mpc
.__make_send_arg2('seekid');
196 Mpc
.prototype.seekcur
= Mpc
.__make_send_arg1('seek');
198 Mpc
.prototype.stop
= Mpc
.__make_send_void('stop');
201 * Connection settings
202 * http://www.musicpd.org/doc/protocol/ch03s08.html
206 Mpc
.prototype.close
= Mpc
.__make_send_void('close');
208 Mpc
.prototype.kill
= Mpc
.__make_send_void('kill');
209 // password {PASSWORD}
210 Mpc
.prototype.password
= Mpc
.__make_send_arg1('password');
212 Mpc
.prototype.ping
= Mpc
.__make_send_void('ping');
215 * Audio output devices
216 * http://www.musicpd.org/doc/protocol/ch03s09.html
219 // disableoutput {ID}
220 Mpc
.prototype.disableoutput
= Mpc
.__make_send_arg1('disableoutput');
222 Mpc
.prototype.enableoutput
= Mpc
.__make_send_arg1('enableoutput');
224 Mpc
.prototype.outputs
= Mpc
.__make_send_void('outputs');
228 * http://www.musicpd.org/doc/protocol/ch03s10.html
232 Mpc
.prototype.config
= Mpc
.__make_send_void('config');
234 Mpc
.prototype.commands
= Mpc
.__make_send_void('commands');
236 Mpc
.prototype.notcommands
= Mpc
.__make_send_void('notcommands');
238 Mpc
.prototype.tagtypes
= Mpc
.__make_send_void('tagtypes');
240 Mpc
.prototype.urlhandlers
= Mpc
.__make_send_void('urlhandlers');
242 Mpc
.prototype.decoders
= Mpc
.__make_send_void('decoders');
246 * http://www.musicpd.org/doc/protocol/ch03s11.html
250 Mpc
.prototype.subscribe
= Mpc
.__make_send_arg1('subscribe');
251 // unsubscribe {NAME}
252 Mpc
.prototype.unsubscribe
= Mpc
.__make_send_arg1('unsubscribe');
254 Mpc
.prototype.channels
= Mpc
.__make_send_void('channels');
256 Mpc
.prototype.readmessages
= Mpc
.__make_send_void('readmessages');
257 // sendmessage {CHANNEL} {TEXT}
258 Mpc
.prototype.sendmessage
= Mpc
.__make_send_arg2('sendmessage');