]>
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'];
8 this._recv_buffer
= [];
9 this._recv_buffer_last
= 0;
13 Mpc
.prototype.log = function(lvl
, msg
, obj
) {
14 if (this._debug_enabled
& lvl
)
15 console
.log('mpc: ' + msg
, obj
);
18 Mpc
.prototype.err = function(msg
, obj
) {
19 console
.error('mpc: ' + msg
, obj
);
22 Mpc
.prototype.set_debug = function(val
) {
23 this._debug_enabled
= val
;
26 Mpc
.prototype.send = function(msg
) {
28 this._queue
.push(msg
);
29 this._socket
.send(msg
, function(x
) {
30 _this
.log(0x1, 'send: ' + msg
+ ':', x
);
31 if (x
.bytesWritten
< 0) {
32 _this
.log(0x1, 'reconnecting...');
33 _this
._socket
.reconnect();
35 _this
._socket
.send(msg
);
40 Mpc
.prototype._parse_result = function(lines
) {
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);
61 Mpc
.prototype.recv_msg = function(lines
) {
63 var curr
= this._queue
.shift();
64 this.log(0x2, 'recv: [' + curr
+ ']:', lines
.join('\n'));
65 if (lines
[0].substr(0, 4) == 'ACK ')
66 this.err(curr
, lines
.join('\n'));
67 curr
= curr
.split(' ');
71 var i
= 2, playlist
= [], song
;
72 while (i
< lines
.length
) {
73 if (lines
[i
].substr(0, 5) == 'file:') {
74 song
= this._parse_result(lines
.splice(0, i
+ 1)).state
;
75 playlist
= playlist
.concat(song
);
80 this.state
.Playlist
= playlist
;
81 this.state
.Playlist
.lastUpdate
= (new Date()).getTime();
82 this._cb_update_state(this.state
);
86 this.state
.Currentsong
= this._parse_result(lines
).state
;
87 this.state
.Currentsong
.lastUpdate
= (new Date()).getTime();
88 this._cb_update_state(this.state
);
93 ret
= this._parse_result(lines
);
97 // When mpd is stopped, it gives us back crap values for some things.
98 if ('state' in state
&& state
.state
== 'stop') {
99 if ('volume' in state
&& state
.volume
== '-1')
100 keys
.splice(keys
.indexOf('volume'), 1);
102 // Now merge the current state with the previous one so that we don't
103 // lose information like volume or song position.
104 var curr_state
= this.state
;
105 keys
.forEach(function(key
) {
106 curr_state
[key
] = state
[key
];
109 this._cb_update_state(curr_state
);
113 this._cb_update_state(lines
, curr
);
118 Mpc
.prototype.recv = function(msg
) {
119 /* We can get back a bunch of responses in a row, so parse them out */
120 var lines
= this._recv_buffer
= this._recv_buffer
.concat(msg
.split('\n'));
122 while (i
< lines
.length
) {
123 if (lines
[i
] == 'OK' || lines
[i
].substr(0, 3) == 'OK ' ||
124 lines
[i
].substr(0, 4) == 'ACK ') {
125 this.recv_msg(lines
.splice(0, i
+ 1));
131 if (lines
.length
&& this._recv_buffer_last
!= lines
.length
) {
132 // Keep sucking in data so long as more exists.
133 this._recv_buffer_last
= lines
.length
;
136 this._recv_buffer_last
= lines
.length
;
140 * Command generator helpers.
143 Mpc
.__make_send_void = function(cmd
) {
144 return function() { this.send(cmd
); }
147 Mpc
.__make_send_arg1 = function(cmd
) {
148 return function(a1
) {
149 if (a1
=== undefined)
150 this.err(cmd
+ ': function requires one argument');
152 this.send(cmd
+ ' ' + a1
);
156 Mpc
.__make_send_arg2 = function(cmd
) {
157 return function(a1
, a2
) {
158 if (a1
=== undefined || a2
=== undefined)
159 this.err(cmd
+ ': function requires two arguments');
161 this.send(cmd
+ ' ' + a1
+ ' ' + a2
);
165 Mpc
.__make_send_arg3 = function(cmd
) {
166 return function(a1
, a2
, a3
) {
167 if (a1
=== undefined || a2
=== undefined || a3
== undefined)
168 this.err(cmd
+ ': function requires three arguments');
170 this.send(cmd
+ ' ' + a1
+ ' ' + a2
+ ' ' + a3
);
174 Mpc
.__make_send_opt = function(cmd
) {
175 return function(arg
) {
176 if (arg
=== undefined)
178 this.send(cmd
+ ' ' + arg
);
182 Mpc
.__make_send_range = function(cmd
, min
, max
, def
) {
183 return function(arg
) {
184 if (arg
=== undefined)
186 if (arg
>= min
&& arg
<= max
)
187 this.send(cmd
+ ' ' + arg
);
189 this.err(cmd
+ ': arg must be [' + min
+ ',' + max
+ '] but got "' + arg
+ '"');
194 * Querying MPD's status
195 * http://www.musicpd.org/doc/protocol/ch03.html#idp118752
199 Mpc
.prototype.clearerror
= Mpc
.__make_send_void('clearerror');
201 Mpc
.prototype.currentsong
= Mpc
.__make_send_void('currentsong');
202 // idle [SUBSYSTEMS...]
205 Mpc
.prototype.status
= Mpc
.__make_send_void('status');
207 Mpc
.prototype.stats
= Mpc
.__make_send_void('stats');
211 * http://www.musicpd.org/doc/protocol/ch03s02.html
215 Mpc
.prototype.consume
= Mpc
.__make_send_range('consume', 0, 1, 1);
216 // crossfade {SECONDS}
217 Mpc
.prototype.crossfade
= Mpc
.__make_send_arg1('crossfade');
218 // mixrampdb {deciBels}
219 Mpc
.prototype.mixrampdb
= Mpc
.__make_send_arg1('mixrampdb');
220 // mixrampdelay {SECONDS|nan}
221 // Note: Probably should handle javascript NaN here.
222 Mpc
.prototype.mixrampdelay
= Mpc
.__make_send_arg1('mixrampdelay');
224 Mpc
.prototype.random
= Mpc
.__make_send_range('random', 0, 1, 1);
226 Mpc
.prototype.repeat
= Mpc
.__make_send_range('repeat', 0, 1, 1);
228 Mpc
.prototype.setvol
= Mpc
.__make_send_range('setvol', 0, 100);
230 Mpc
.prototype.single
= Mpc
.__make_send_range('single', 0, 1, 1);
231 // replay_gain_mode {MODE}
232 Mpc
.prototype.replay_gain_mode
= Mpc
.__make_send_arg1('replay_gain_mode');
233 // replay_gain_status
236 * Controlling playback
237 * http://www.musicpd.org/doc/protocol/ch03s03.html
241 Mpc
.prototype.next
= Mpc
.__make_send_void('next');
243 Mpc
.prototype.pause
= Mpc
.__make_send_range('pause', 0, 1, 1);
245 Mpc
.prototype.play
= Mpc
.__make_send_opt('play');
247 Mpc
.prototype.playid
= Mpc
.__make_send_opt('playid');
249 Mpc
.prototype.previous
= Mpc
.__make_send_void('previous');
250 // seek {SONGPOS} {TIME}
251 Mpc
.prototype.seek
= Mpc
.__make_send_arg2('seek');
252 // seekid {SONGID} {TIME}
253 Mpc
.prototype.seekid
= Mpc
.__make_send_arg2('seekid');
255 Mpc
.prototype.seekcur
= Mpc
.__make_send_arg1('seekcur');
257 Mpc
.prototype.stop
= Mpc
.__make_send_void('stop');
260 * The current playlist
261 * http://www.musicpd.org/doc/protocol/ch03s04.html
265 Mpc
.prototype.add
= Mpc
.__make_send_arg1('add');
266 // addid {URI} [POSITION]
267 // TODO: handle position
268 Mpc
.prototype.addid
= Mpc
.__make_send_arg1('addid');
270 Mpc
.prototype.clear
= Mpc
.__make_send_void('clear');
271 // delete [{POS} | {START:END}]
272 Mpc
.prototype.delete = Mpc
.__make_send_arg1('delete');
274 Mpc
.prototype.deleteid
= Mpc
.__make_send_arg1('deleteid');
275 // move [{FROM} | {START:END}] {TO}
276 Mpc
.prototype.move = Mpc
.__make_send_arg2('move');
277 // moveid {FROM} {TO}
278 Mpc
.prototype.moveid
= Mpc
.__make_send_arg2('moveid');
280 Mpc
.prototype.playlist
= Mpc
.__make_send_void('playlist');
281 // playlistfind {TAG} {NEEDLE}
282 Mpc
.prototype.playlistfind
= Mpc
.__make_send_arg2('playlistfind');
283 // playlistid {SONGID}
284 Mpc
.prototype.playlistid
= Mpc
.__make_send_arg1('playlistid');
285 // playlistinfo [[SONGPOS] | [START:END]]
286 Mpc
.prototype.playlistinfo
= Mpc
.__make_send_opt('playlistinfo');
287 // playlistsearch {TAG} {NEEDLE}
288 Mpc
.prototype.playlistsearch
= Mpc
.__make_send_arg2('playlistsearch');
289 // plchanges {VERSION}
290 Mpc
.prototype.plchanges
= Mpc
.__make_send_arg1('plchanges');
291 // plchangesposid {VERSION}
292 Mpc
.prototype.plchangesposid
= Mpc
.__make_send_arg1('plchangesposid');
293 // prio {PRIORITY} {START:END...}
294 Mpc
.prototype.prio
= Mpc
.__make_send_arg2('prio');
295 // prioid {PRIORITY} {ID...}
296 Mpc
.prototype.prioid
= Mpc
.__make_send_arg2('prioid');
297 // shuffle [START:END]
298 Mpc
.prototype.shuffle
= Mpc
.__make_send_opt('shuffle');
299 // swap {SONG1} {SONG2}
300 Mpc
.prototype.swap
= Mpc
.__make_send_arg2('swap');
301 // swapid {SONG1} {SONG2}
302 Mpc
.prototype.swapid
= Mpc
.__make_send_arg2('swapid');
306 * http://www.musicpd.org/doc/protocol/ch03s05.html
309 // listplaylist {NAME}
310 Mpc
.prototype.listplaylist
= Mpc
.__make_send_arg1('listplaylist');
311 // listplaylistinfo {NAME}
312 Mpc
.prototype.listplaylistinfo
= Mpc
.__make_send_arg1('listplaylistinfo');
314 Mpc
.prototype.listplaylists
= Mpc
.__make_send_void('listplaylists');
315 // load {NAME} [START:END]
316 // TODO: handle optional start:end
317 Mpc
.prototype.load
= Mpc
.__make_send_arg1('load');
318 // playlistadd {NAME} {URI}
319 Mpc
.prototype.playlistadd
= Mpc
.__make_send_arg2('playlistadd');
320 // playlistclear {NAME}
321 Mpc
.prototype.playlistclear
= Mpc
.__make_send_arg1('playlistclear');
322 // playlistdelete {NAME} {SONGPOS}
323 Mpc
.prototype.playlistdelete
= Mpc
.__make_send_arg2('playlistdelete');
324 // playlistmove {NAME} {SONGID} {SONGPOS}
325 Mpc
.prototype.playlistmove
= Mpc
.__make_send_arg3('playlistmove');
326 // rename {NAME} {NEW_NAME}
327 Mpc
.prototype.rename
= Mpc
.__make_send_arg2('rename');
329 Mpc
.prototype.rm
= Mpc
.__make_send_arg1('rm');
331 Mpc
.prototype.save
= Mpc
.__make_send_arg1('save');
335 * http://www.musicpd.org/doc/protocol/ch03s06.html
339 * Connection settings
340 * http://www.musicpd.org/doc/protocol/ch03s08.html
344 Mpc
.prototype.close
= Mpc
.__make_send_void('close');
346 Mpc
.prototype.kill
= Mpc
.__make_send_void('kill');
347 // password {PASSWORD}
348 Mpc
.prototype.password
= Mpc
.__make_send_arg1('password');
350 Mpc
.prototype.ping
= Mpc
.__make_send_void('ping');
353 * Audio output devices
354 * http://www.musicpd.org/doc/protocol/ch03s09.html
357 // disableoutput {ID}
358 Mpc
.prototype.disableoutput
= Mpc
.__make_send_arg1('disableoutput');
360 Mpc
.prototype.enableoutput
= Mpc
.__make_send_arg1('enableoutput');
362 Mpc
.prototype.outputs
= Mpc
.__make_send_void('outputs');
366 * http://www.musicpd.org/doc/protocol/ch03s10.html
370 Mpc
.prototype.config
= Mpc
.__make_send_void('config');
372 Mpc
.prototype.commands
= Mpc
.__make_send_void('commands');
374 Mpc
.prototype.notcommands
= Mpc
.__make_send_void('notcommands');
376 Mpc
.prototype.tagtypes
= Mpc
.__make_send_void('tagtypes');
378 Mpc
.prototype.urlhandlers
= Mpc
.__make_send_void('urlhandlers');
380 Mpc
.prototype.decoders
= Mpc
.__make_send_void('decoders');
384 * http://www.musicpd.org/doc/protocol/ch03s11.html
388 Mpc
.prototype.subscribe
= Mpc
.__make_send_arg1('subscribe');
389 // unsubscribe {NAME}
390 Mpc
.prototype.unsubscribe
= Mpc
.__make_send_arg1('unsubscribe');
392 Mpc
.prototype.channels
= Mpc
.__make_send_void('channels');
394 Mpc
.prototype.readmessages
= Mpc
.__make_send_void('readmessages');
395 // sendmessage {CHANNEL} {TEXT}
396 Mpc
.prototype.sendmessage
= Mpc
.__make_send_arg2('sendmessage');