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Commit | Line | Data |
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50dafc4c MF |
1 | // Written by Mike Frysinger <vapier@gmail.com>. Released into the public domain. Suck it. |
2 | ||
4d3d4e03 | 3 | function Mpc(socket, cb_update_state, debug_enabled) { |
50dafc4c MF |
4 | this._socket = socket; |
5 | this._cb_update_state = cb_update_state; | |
4d3d4e03 | 6 | this._debug_enabled = debug_enabled; |
50dafc4c MF |
7 | this._queue = ['init']; |
8 | this.state = {}; | |
9 | } | |
10 | ||
e4657cab MF |
11 | Mpc.prototype.log = function(lvl, msg, obj) { |
12 | if (this._debug_enabled & lvl) | |
4d3d4e03 MF |
13 | console.log('mpc: ' + msg, obj); |
14 | } | |
15 | ||
e4657cab MF |
16 | Mpc.prototype.err = function(msg, obj) { |
17 | console.error('mpc: ' + msg, obj); | |
18 | } | |
19 | ||
4d3d4e03 MF |
20 | Mpc.prototype.set_debug = function(val) { |
21 | this._debug_enabled = val; | |
50dafc4c MF |
22 | } |
23 | ||
24 | Mpc.prototype.send = function(msg) { | |
4d3d4e03 | 25 | var _this = this; |
50dafc4c MF |
26 | this._queue.push(msg); |
27 | this._socket.send(msg, function(x) { | |
e4657cab | 28 | _this.log(0x1, 'send: ' + msg + ':', x); |
50dafc4c MF |
29 | }); |
30 | } | |
31 | ||
32 | Mpc.prototype.recv_msg = function(lines) { | |
33 | curr = this._queue.shift(); | |
e4657cab | 34 | this.log(0x2, 'recv: [' + curr + ']:', lines.join('\n')); |
50dafc4c MF |
35 | curr = curr.split(' '); |
36 | ||
37 | switch (curr[0]) { | |
38 | // Needs to return a list of dicts (see above for dicts). | |
39 | //case 'playlistinfo': | |
40 | case 'currentsong': | |
41 | case 'stats': | |
42 | case 'status': | |
43 | state = {}; | |
f5b43479 | 44 | keys = []; |
50dafc4c MF |
45 | lines.forEach(function(line) { |
46 | i = line.indexOf(':'); | |
47 | if (i == -1) | |
48 | return; // Ignores the OK line | |
49 | key = line.substr(0, i); | |
f5b43479 | 50 | keys.push(key); |
50dafc4c MF |
51 | val = line.substr(i + 2); |
52 | state[key] = val; | |
53 | }); | |
f5b43479 MF |
54 | |
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); | |
59 | } | |
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]; | |
65 | }); | |
66 | ||
67 | this._cb_update_state(curr_state); | |
50dafc4c MF |
68 | break; |
69 | default: | |
70 | this._cb_update_state(lines, curr); | |
71 | break; | |
72 | } | |
73 | } | |
74 | ||
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'); | |
79 | var i = 0; | |
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)); | |
83 | i = 0; | |
84 | } else | |
85 | ++i; | |
86 | } | |
87 | } | |
88 | ||
89 | /* | |
90 | * Command generator helpers. | |
91 | */ | |
92 | ||
93 | Mpc.__make_send_void = function(cmd) { | |
94 | return function() { this.send(cmd); } | |
95 | } | |
96 | ||
97 | Mpc.__make_send_arg1 = function(cmd) { | |
98 | return function(a1) { | |
99 | if (a1 === undefined) | |
e4657cab | 100 | this.err(cmd + ': function requires one argument'); |
50dafc4c MF |
101 | else |
102 | this.send(cmd + ' ' + a1); | |
103 | } | |
104 | } | |
105 | ||
106 | Mpc.__make_send_arg2 = function(cmd) { | |
107 | return function(a1, a2) { | |
108 | if (a1 === undefined || a2 === undefined) | |
e4657cab | 109 | this.err(cmd + ': function requires two arguments'); |
50dafc4c MF |
110 | else |
111 | this.send(cmd + ' ' + a1 + ' ' + a2); | |
112 | } | |
113 | } | |
114 | ||
60d8b85a MF |
115 | Mpc.__make_send_arg3 = function(cmd) { |
116 | return function(a1, a2, a3) { | |
117 | if (a1 === undefined || a2 === undefined || a3 == undefined) | |
118 | this.err(cmd + ': function requires three arguments'); | |
119 | else | |
120 | this.send(cmd + ' ' + a1 + ' ' + a2 + ' ' + a3); | |
121 | } | |
122 | } | |
123 | ||
50dafc4c MF |
124 | Mpc.__make_send_opt = function(cmd) { |
125 | return function(arg) { | |
126 | if (arg === undefined) | |
127 | arg = ''; | |
128 | this.send(cmd + ' ' + arg); | |
129 | }; | |
130 | } | |
131 | ||
132 | Mpc.__make_send_range = function(cmd, min, max, def) { | |
133 | return function(arg) { | |
134 | if (arg === undefined) | |
135 | arg = def; | |
136 | if (arg >= min && arg <= max) | |
137 | this.send(cmd + ' ' + arg); | |
138 | else | |
e4657cab | 139 | this.err(cmd + ': arg must be [' + min + ',' + max + '] but got "' + arg + '"'); |
50dafc4c MF |
140 | }; |
141 | } | |
142 | ||
143 | /* | |
144 | * Querying MPD's status | |
145 | * http://www.musicpd.org/doc/protocol/ch03.html#idp118752 | |
146 | */ | |
147 | ||
148 | // clearerror | |
149 | Mpc.prototype.clearerror = Mpc.__make_send_void('clearerror'); | |
150 | // currentsong | |
151 | Mpc.prototype.currentsong = Mpc.__make_send_void('currentsong'); | |
152 | // idle [SUBSYSTEMS...] | |
153 | // TODO | |
154 | // status | |
155 | Mpc.prototype.status = Mpc.__make_send_void('status'); | |
156 | // stats | |
157 | Mpc.prototype.stats = Mpc.__make_send_void('stats'); | |
158 | ||
159 | /* | |
160 | * Playback options | |
161 | * http://www.musicpd.org/doc/protocol/ch03s02.html | |
162 | */ | |
163 | ||
164 | // consume {STATE} | |
165 | Mpc.prototype.consume = Mpc.__make_send_range('consume', 0, 1, 1); | |
166 | // crossfade {SECONDS} | |
f5ed7157 | 167 | Mpc.prototype.crossfade = Mpc.__make_send_arg1('crossfade'); |
50dafc4c MF |
168 | // mixrampdb {deciBels} |
169 | Mpc.prototype.mixrampdb = Mpc.__make_send_arg1('mixrampdb'); | |
170 | // mixrampdelay {SECONDS|nan} | |
171 | // Note: Probably should handle javascript NaN here. | |
172 | Mpc.prototype.mixrampdelay = Mpc.__make_send_arg1('mixrampdelay'); | |
173 | // random {STATE} | |
174 | Mpc.prototype.random = Mpc.__make_send_range('random', 0, 1, 1); | |
175 | // repeat {STATE} | |
176 | Mpc.prototype.repeat = Mpc.__make_send_range('repeat', 0, 1, 1); | |
177 | // setvol {VOL} | |
178 | Mpc.prototype.setvol = Mpc.__make_send_range('setvol', 0, 100); | |
179 | // single {STATE} | |
180 | Mpc.prototype.single = Mpc.__make_send_range('single', 0, 1, 1); | |
181 | // replay_gain_mode {MODE} | |
182 | Mpc.prototype.replay_gain_mode = Mpc.__make_send_arg1('replay_gain_mode'); | |
183 | // replay_gain_status | |
184 | ||
185 | /* | |
186 | * Controlling playback | |
187 | * http://www.musicpd.org/doc/protocol/ch03s03.html | |
188 | */ | |
189 | ||
190 | // next | |
191 | Mpc.prototype.next = Mpc.__make_send_void('next'); | |
192 | // pause {PAUSE} | |
193 | Mpc.prototype.pause = Mpc.__make_send_range('pause', 0, 1, 1); | |
194 | // play [SONGPOS] | |
195 | Mpc.prototype.play = Mpc.__make_send_opt('play'); | |
196 | // playid [SONGID] | |
197 | Mpc.prototype.playid = Mpc.__make_send_opt('playid'); | |
198 | // previous | |
199 | Mpc.prototype.previous = Mpc.__make_send_void('previous'); | |
200 | // seek {SONGPOS} {TIME} | |
201 | Mpc.prototype.seek = Mpc.__make_send_arg2('seek'); | |
202 | // seekid {SONGID} {TIME} | |
203 | Mpc.prototype.seekid = Mpc.__make_send_arg2('seekid'); | |
204 | // seekcur {TIME} | |
205 | Mpc.prototype.seekcur = Mpc.__make_send_arg1('seek'); | |
206 | // stop | |
207 | Mpc.prototype.stop = Mpc.__make_send_void('stop'); | |
208 | ||
60d8b85a MF |
209 | /* |
210 | * The current playlist | |
211 | * http://www.musicpd.org/doc/protocol/ch03s04.html | |
212 | */ | |
213 | ||
214 | // add {URI} | |
215 | Mpc.prototype.add = Mpc.__make_send_arg1('add'); | |
216 | // addid {URI} [POSITION] | |
217 | // TODO: handle position | |
218 | Mpc.prototype.addid = Mpc.__make_send_arg1('addid'); | |
219 | // clear | |
220 | Mpc.prototype.clear = Mpc.__make_send_void('clear'); | |
221 | // delete [{POS} | {START:END}] | |
222 | Mpc.prototype.delete = Mpc.__make_send_arg1('delete'); | |
223 | // deleteid {SONGID} | |
224 | Mpc.prototype.deleteid = Mpc.__make_send_arg1('deleteid'); | |
225 | // move [{FROM} | {START:END}] {TO} | |
226 | Mpc.prototype.move = Mpc.__make_send_arg2('move'); | |
227 | // moveid {FROM} {TO} | |
228 | Mpc.prototype.moveid = Mpc.__make_send_arg2('moveid'); | |
229 | // playlist | |
230 | Mpc.prototype.playlist = Mpc.__make_send_void('playlist'); | |
231 | // playlistfind {TAG} {NEEDLE} | |
232 | Mpc.prototype.playlistfind = Mpc.__make_send_arg2('playlistfind'); | |
233 | // playlistid {SONGID} | |
234 | Mpc.prototype.playlistid = Mpc.__make_send_arg1('playlistid'); | |
235 | // playlistinfo [[SONGPOS] | [START:END]] | |
236 | Mpc.prototype.playlistinfo = Mpc.__make_send_opt('playlistinfo'); | |
237 | // playlistsearch {TAG} {NEEDLE} | |
238 | Mpc.prototype.playlistsearch = Mpc.__make_send_arg2('playlistsearch'); | |
239 | // plchanges {VERSION} | |
240 | Mpc.prototype.plchanges = Mpc.__make_send_arg1('plchanges'); | |
241 | // plchangesposid {VERSION} | |
242 | Mpc.prototype.plchangesposid = Mpc.__make_send_arg1('plchangesposid'); | |
243 | // prio {PRIORITY} {START:END...} | |
244 | Mpc.prototype.prio = Mpc.__make_send_arg2('prio'); | |
245 | // prioid {PRIORITY} {ID...} | |
246 | Mpc.prototype.prioid = Mpc.__make_send_arg2('prioid'); | |
247 | // shuffle [START:END] | |
248 | Mpc.prototype.shuffle = Mpc.__make_send_opt('shuffle'); | |
249 | // swap {SONG1} {SONG2} | |
250 | Mpc.prototype.swap = Mpc.__make_send_arg2('swap'); | |
251 | // swapid {SONG1} {SONG2} | |
252 | Mpc.prototype.swapid = Mpc.__make_send_arg2('swapid'); | |
253 | ||
254 | /* | |
255 | * Stored playlists | |
256 | * http://www.musicpd.org/doc/protocol/ch03s05.html | |
257 | */ | |
258 | ||
259 | // listplaylist {NAME} | |
260 | Mpc.prototype.listplaylist = Mpc.__make_send_arg1('listplaylist'); | |
261 | // listplaylistinfo {NAME} | |
262 | Mpc.prototype.listplaylistinfo = Mpc.__make_send_arg1('listplaylistinfo'); | |
263 | // listplaylists | |
264 | Mpc.prototype.listplaylists = Mpc.__make_send_void('listplaylists'); | |
265 | // load {NAME} [START:END] | |
266 | // TODO: handle optional start:end | |
267 | Mpc.prototype.load = Mpc.__make_send_arg1('load'); | |
268 | // playlistadd {NAME} {URI} | |
269 | Mpc.prototype.playlistadd = Mpc.__make_send_arg2('playlistadd'); | |
270 | // playlistclear {NAME} | |
271 | Mpc.prototype.playlistclear = Mpc.__make_send_arg1('playlistclear'); | |
272 | // playlistdelete {NAME} {SONGPOS} | |
273 | Mpc.prototype.playlistdelete = Mpc.__make_send_arg2('playlistdelete'); | |
274 | // playlistmove {NAME} {SONGID} {SONGPOS} | |
275 | Mpc.prototype.playlistmove = Mpc.__make_send_arg3('playlistmove'); | |
276 | // rename {NAME} {NEW_NAME} | |
277 | Mpc.prototype.rename = Mpc.__make_send_arg2('rename'); | |
278 | // rm {NAME} | |
279 | Mpc.prototype.rm = Mpc.__make_send_arg1('rm'); | |
280 | // save {NAME} | |
281 | Mpc.prototype.save = Mpc.__make_send_arg1('save'); | |
282 | ||
283 | /* | |
284 | * The music database | |
285 | * http://www.musicpd.org/doc/protocol/ch03s06.html | |
286 | */ | |
287 | ||
50dafc4c MF |
288 | /* |
289 | * Connection settings | |
290 | * http://www.musicpd.org/doc/protocol/ch03s08.html | |
291 | */ | |
292 | ||
293 | // close | |
294 | Mpc.prototype.close = Mpc.__make_send_void('close'); | |
295 | // kill | |
296 | Mpc.prototype.kill = Mpc.__make_send_void('kill'); | |
297 | // password {PASSWORD} | |
298 | Mpc.prototype.password = Mpc.__make_send_arg1('password'); | |
299 | // ping | |
300 | Mpc.prototype.ping = Mpc.__make_send_void('ping'); | |
024ea284 MF |
301 | |
302 | /* | |
303 | * Audio output devices | |
304 | * http://www.musicpd.org/doc/protocol/ch03s09.html | |
305 | */ | |
306 | ||
307 | // disableoutput {ID} | |
308 | Mpc.prototype.disableoutput = Mpc.__make_send_arg1('disableoutput'); | |
309 | // enableoutput {ID} | |
310 | Mpc.prototype.enableoutput = Mpc.__make_send_arg1('enableoutput'); | |
311 | // outputs | |
312 | Mpc.prototype.outputs = Mpc.__make_send_void('outputs'); | |
313 | ||
314 | /* | |
315 | * Reflection | |
316 | * http://www.musicpd.org/doc/protocol/ch03s10.html | |
317 | */ | |
318 | ||
319 | // config | |
320 | Mpc.prototype.config = Mpc.__make_send_void('config'); | |
321 | // commands | |
322 | Mpc.prototype.commands = Mpc.__make_send_void('commands'); | |
323 | // notcommands | |
324 | Mpc.prototype.notcommands = Mpc.__make_send_void('notcommands'); | |
325 | // tagtypes | |
326 | Mpc.prototype.tagtypes = Mpc.__make_send_void('tagtypes'); | |
327 | // urlhandlers | |
328 | Mpc.prototype.urlhandlers = Mpc.__make_send_void('urlhandlers'); | |
329 | // decoders | |
330 | Mpc.prototype.decoders = Mpc.__make_send_void('decoders'); | |
331 | ||
332 | /* | |
333 | * Client to client | |
334 | * http://www.musicpd.org/doc/protocol/ch03s11.html | |
335 | */ | |
336 | ||
337 | // subscribe {NAME} | |
338 | Mpc.prototype.subscribe = Mpc.__make_send_arg1('subscribe'); | |
339 | // unsubscribe {NAME} | |
340 | Mpc.prototype.unsubscribe = Mpc.__make_send_arg1('unsubscribe'); | |
341 | // channels | |
342 | Mpc.prototype.channels = Mpc.__make_send_void('channels'); | |
343 | // readmessages | |
344 | Mpc.prototype.readmessages = Mpc.__make_send_void('readmessages'); | |
345 | // sendmessage {CHANNEL} {TEXT} | |
346 | Mpc.prototype.sendmessage = Mpc.__make_send_arg2('sendmessage'); |