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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 | 7 | this._queue = ['init']; |
1ae37b16 MF |
8 | this._recv_buffer = []; |
9 | this._recv_buffer_last = 0; | |
50dafc4c MF |
10 | this.state = {}; |
11 | } | |
12 | ||
e4657cab MF |
13 | Mpc.prototype.log = function(lvl, msg, obj) { |
14 | if (this._debug_enabled & lvl) | |
4d3d4e03 MF |
15 | console.log('mpc: ' + msg, obj); |
16 | } | |
17 | ||
e4657cab MF |
18 | Mpc.prototype.err = function(msg, obj) { |
19 | console.error('mpc: ' + msg, obj); | |
20 | } | |
21 | ||
4d3d4e03 MF |
22 | Mpc.prototype.set_debug = function(val) { |
23 | this._debug_enabled = val; | |
50dafc4c MF |
24 | } |
25 | ||
26 | Mpc.prototype.send = function(msg) { | |
4d3d4e03 | 27 | var _this = this; |
50dafc4c MF |
28 | this._queue.push(msg); |
29 | this._socket.send(msg, function(x) { | |
e4657cab | 30 | _this.log(0x1, 'send: ' + msg + ':', x); |
50dafc4c MF |
31 | }); |
32 | } | |
33 | ||
34 | Mpc.prototype.recv_msg = function(lines) { | |
35 | curr = this._queue.shift(); | |
e4657cab | 36 | this.log(0x2, 'recv: [' + curr + ']:', lines.join('\n')); |
50dafc4c MF |
37 | curr = curr.split(' '); |
38 | ||
39 | switch (curr[0]) { | |
40 | // Needs to return a list of dicts (see above for dicts). | |
41 | //case 'playlistinfo': | |
42 | case 'currentsong': | |
43 | case 'stats': | |
44 | case 'status': | |
45 | state = {}; | |
f5b43479 | 46 | keys = []; |
50dafc4c MF |
47 | lines.forEach(function(line) { |
48 | i = line.indexOf(':'); | |
49 | if (i == -1) | |
50 | return; // Ignores the OK line | |
51 | key = line.substr(0, i); | |
f5b43479 | 52 | keys.push(key); |
50dafc4c MF |
53 | val = line.substr(i + 2); |
54 | state[key] = val; | |
55 | }); | |
f5b43479 MF |
56 | |
57 | // When mpd is stopped, it gives us back crap values for some things. | |
58 | if ('state' in state && state.state == 'stop') { | |
59 | if ('volume' in state && state.volume == '-1') | |
60 | keys.splice(keys.indexOf('volume'), 1); | |
61 | } | |
62 | // Now merge the current state with the previous one so that we don't | |
63 | // lose information like volume or song position. | |
64 | curr_state = this.state; | |
65 | keys.forEach(function(key) { | |
66 | curr_state[key] = state[key]; | |
67 | }); | |
68 | ||
69 | this._cb_update_state(curr_state); | |
50dafc4c MF |
70 | break; |
71 | default: | |
72 | this._cb_update_state(lines, curr); | |
73 | break; | |
74 | } | |
75 | } | |
76 | ||
77 | Mpc.prototype.recv = function(msg) { | |
78 | /* We can get back a bunch of responses in a row, so parse them out */ | |
1ae37b16 | 79 | var lines = this._recv_buffer = this._recv_buffer.concat(msg.split('\n')); |
50dafc4c MF |
80 | var i = 0; |
81 | while (i < lines.length) { | |
82 | if (lines[i] == 'OK' || lines[i].substr(0, 3) == 'OK ') { | |
83 | this.recv_msg(lines.splice(0, i + 1)); | |
84 | i = 0; | |
85 | } else | |
86 | ++i; | |
87 | } | |
1ae37b16 MF |
88 | |
89 | if (lines.length && this._recv_buffer_last != lines.length) { | |
90 | // Keep sucking in data so long as more exists. | |
91 | this._recv_buffer_last = lines.length; | |
92 | this._socket.poll(); | |
93 | } else | |
94 | this._recv_buffer_last = lines.length; | |
50dafc4c MF |
95 | } |
96 | ||
97 | /* | |
98 | * Command generator helpers. | |
99 | */ | |
100 | ||
101 | Mpc.__make_send_void = function(cmd) { | |
102 | return function() { this.send(cmd); } | |
103 | } | |
104 | ||
105 | Mpc.__make_send_arg1 = function(cmd) { | |
106 | return function(a1) { | |
107 | if (a1 === undefined) | |
e4657cab | 108 | this.err(cmd + ': function requires one argument'); |
50dafc4c MF |
109 | else |
110 | this.send(cmd + ' ' + a1); | |
111 | } | |
112 | } | |
113 | ||
114 | Mpc.__make_send_arg2 = function(cmd) { | |
115 | return function(a1, a2) { | |
116 | if (a1 === undefined || a2 === undefined) | |
e4657cab | 117 | this.err(cmd + ': function requires two arguments'); |
50dafc4c MF |
118 | else |
119 | this.send(cmd + ' ' + a1 + ' ' + a2); | |
120 | } | |
121 | } | |
122 | ||
60d8b85a MF |
123 | Mpc.__make_send_arg3 = function(cmd) { |
124 | return function(a1, a2, a3) { | |
125 | if (a1 === undefined || a2 === undefined || a3 == undefined) | |
126 | this.err(cmd + ': function requires three arguments'); | |
127 | else | |
128 | this.send(cmd + ' ' + a1 + ' ' + a2 + ' ' + a3); | |
129 | } | |
130 | } | |
131 | ||
50dafc4c MF |
132 | Mpc.__make_send_opt = function(cmd) { |
133 | return function(arg) { | |
134 | if (arg === undefined) | |
135 | arg = ''; | |
136 | this.send(cmd + ' ' + arg); | |
137 | }; | |
138 | } | |
139 | ||
140 | Mpc.__make_send_range = function(cmd, min, max, def) { | |
141 | return function(arg) { | |
142 | if (arg === undefined) | |
143 | arg = def; | |
144 | if (arg >= min && arg <= max) | |
145 | this.send(cmd + ' ' + arg); | |
146 | else | |
e4657cab | 147 | this.err(cmd + ': arg must be [' + min + ',' + max + '] but got "' + arg + '"'); |
50dafc4c MF |
148 | }; |
149 | } | |
150 | ||
151 | /* | |
152 | * Querying MPD's status | |
153 | * http://www.musicpd.org/doc/protocol/ch03.html#idp118752 | |
154 | */ | |
155 | ||
156 | // clearerror | |
157 | Mpc.prototype.clearerror = Mpc.__make_send_void('clearerror'); | |
158 | // currentsong | |
159 | Mpc.prototype.currentsong = Mpc.__make_send_void('currentsong'); | |
160 | // idle [SUBSYSTEMS...] | |
161 | // TODO | |
162 | // status | |
163 | Mpc.prototype.status = Mpc.__make_send_void('status'); | |
164 | // stats | |
165 | Mpc.prototype.stats = Mpc.__make_send_void('stats'); | |
166 | ||
167 | /* | |
168 | * Playback options | |
169 | * http://www.musicpd.org/doc/protocol/ch03s02.html | |
170 | */ | |
171 | ||
172 | // consume {STATE} | |
173 | Mpc.prototype.consume = Mpc.__make_send_range('consume', 0, 1, 1); | |
174 | // crossfade {SECONDS} | |
f5ed7157 | 175 | Mpc.prototype.crossfade = Mpc.__make_send_arg1('crossfade'); |
50dafc4c MF |
176 | // mixrampdb {deciBels} |
177 | Mpc.prototype.mixrampdb = Mpc.__make_send_arg1('mixrampdb'); | |
178 | // mixrampdelay {SECONDS|nan} | |
179 | // Note: Probably should handle javascript NaN here. | |
180 | Mpc.prototype.mixrampdelay = Mpc.__make_send_arg1('mixrampdelay'); | |
181 | // random {STATE} | |
182 | Mpc.prototype.random = Mpc.__make_send_range('random', 0, 1, 1); | |
183 | // repeat {STATE} | |
184 | Mpc.prototype.repeat = Mpc.__make_send_range('repeat', 0, 1, 1); | |
185 | // setvol {VOL} | |
186 | Mpc.prototype.setvol = Mpc.__make_send_range('setvol', 0, 100); | |
187 | // single {STATE} | |
188 | Mpc.prototype.single = Mpc.__make_send_range('single', 0, 1, 1); | |
189 | // replay_gain_mode {MODE} | |
190 | Mpc.prototype.replay_gain_mode = Mpc.__make_send_arg1('replay_gain_mode'); | |
191 | // replay_gain_status | |
192 | ||
193 | /* | |
194 | * Controlling playback | |
195 | * http://www.musicpd.org/doc/protocol/ch03s03.html | |
196 | */ | |
197 | ||
198 | // next | |
199 | Mpc.prototype.next = Mpc.__make_send_void('next'); | |
200 | // pause {PAUSE} | |
201 | Mpc.prototype.pause = Mpc.__make_send_range('pause', 0, 1, 1); | |
202 | // play [SONGPOS] | |
203 | Mpc.prototype.play = Mpc.__make_send_opt('play'); | |
204 | // playid [SONGID] | |
205 | Mpc.prototype.playid = Mpc.__make_send_opt('playid'); | |
206 | // previous | |
207 | Mpc.prototype.previous = Mpc.__make_send_void('previous'); | |
208 | // seek {SONGPOS} {TIME} | |
209 | Mpc.prototype.seek = Mpc.__make_send_arg2('seek'); | |
210 | // seekid {SONGID} {TIME} | |
211 | Mpc.prototype.seekid = Mpc.__make_send_arg2('seekid'); | |
212 | // seekcur {TIME} | |
213 | Mpc.prototype.seekcur = Mpc.__make_send_arg1('seek'); | |
214 | // stop | |
215 | Mpc.prototype.stop = Mpc.__make_send_void('stop'); | |
216 | ||
60d8b85a MF |
217 | /* |
218 | * The current playlist | |
219 | * http://www.musicpd.org/doc/protocol/ch03s04.html | |
220 | */ | |
221 | ||
222 | // add {URI} | |
223 | Mpc.prototype.add = Mpc.__make_send_arg1('add'); | |
224 | // addid {URI} [POSITION] | |
225 | // TODO: handle position | |
226 | Mpc.prototype.addid = Mpc.__make_send_arg1('addid'); | |
227 | // clear | |
228 | Mpc.prototype.clear = Mpc.__make_send_void('clear'); | |
229 | // delete [{POS} | {START:END}] | |
230 | Mpc.prototype.delete = Mpc.__make_send_arg1('delete'); | |
231 | // deleteid {SONGID} | |
232 | Mpc.prototype.deleteid = Mpc.__make_send_arg1('deleteid'); | |
233 | // move [{FROM} | {START:END}] {TO} | |
234 | Mpc.prototype.move = Mpc.__make_send_arg2('move'); | |
235 | // moveid {FROM} {TO} | |
236 | Mpc.prototype.moveid = Mpc.__make_send_arg2('moveid'); | |
237 | // playlist | |
238 | Mpc.prototype.playlist = Mpc.__make_send_void('playlist'); | |
239 | // playlistfind {TAG} {NEEDLE} | |
240 | Mpc.prototype.playlistfind = Mpc.__make_send_arg2('playlistfind'); | |
241 | // playlistid {SONGID} | |
242 | Mpc.prototype.playlistid = Mpc.__make_send_arg1('playlistid'); | |
243 | // playlistinfo [[SONGPOS] | [START:END]] | |
244 | Mpc.prototype.playlistinfo = Mpc.__make_send_opt('playlistinfo'); | |
245 | // playlistsearch {TAG} {NEEDLE} | |
246 | Mpc.prototype.playlistsearch = Mpc.__make_send_arg2('playlistsearch'); | |
247 | // plchanges {VERSION} | |
248 | Mpc.prototype.plchanges = Mpc.__make_send_arg1('plchanges'); | |
249 | // plchangesposid {VERSION} | |
250 | Mpc.prototype.plchangesposid = Mpc.__make_send_arg1('plchangesposid'); | |
251 | // prio {PRIORITY} {START:END...} | |
252 | Mpc.prototype.prio = Mpc.__make_send_arg2('prio'); | |
253 | // prioid {PRIORITY} {ID...} | |
254 | Mpc.prototype.prioid = Mpc.__make_send_arg2('prioid'); | |
255 | // shuffle [START:END] | |
256 | Mpc.prototype.shuffle = Mpc.__make_send_opt('shuffle'); | |
257 | // swap {SONG1} {SONG2} | |
258 | Mpc.prototype.swap = Mpc.__make_send_arg2('swap'); | |
259 | // swapid {SONG1} {SONG2} | |
260 | Mpc.prototype.swapid = Mpc.__make_send_arg2('swapid'); | |
261 | ||
262 | /* | |
263 | * Stored playlists | |
264 | * http://www.musicpd.org/doc/protocol/ch03s05.html | |
265 | */ | |
266 | ||
267 | // listplaylist {NAME} | |
268 | Mpc.prototype.listplaylist = Mpc.__make_send_arg1('listplaylist'); | |
269 | // listplaylistinfo {NAME} | |
270 | Mpc.prototype.listplaylistinfo = Mpc.__make_send_arg1('listplaylistinfo'); | |
271 | // listplaylists | |
272 | Mpc.prototype.listplaylists = Mpc.__make_send_void('listplaylists'); | |
273 | // load {NAME} [START:END] | |
274 | // TODO: handle optional start:end | |
275 | Mpc.prototype.load = Mpc.__make_send_arg1('load'); | |
276 | // playlistadd {NAME} {URI} | |
277 | Mpc.prototype.playlistadd = Mpc.__make_send_arg2('playlistadd'); | |
278 | // playlistclear {NAME} | |
279 | Mpc.prototype.playlistclear = Mpc.__make_send_arg1('playlistclear'); | |
280 | // playlistdelete {NAME} {SONGPOS} | |
281 | Mpc.prototype.playlistdelete = Mpc.__make_send_arg2('playlistdelete'); | |
282 | // playlistmove {NAME} {SONGID} {SONGPOS} | |
283 | Mpc.prototype.playlistmove = Mpc.__make_send_arg3('playlistmove'); | |
284 | // rename {NAME} {NEW_NAME} | |
285 | Mpc.prototype.rename = Mpc.__make_send_arg2('rename'); | |
286 | // rm {NAME} | |
287 | Mpc.prototype.rm = Mpc.__make_send_arg1('rm'); | |
288 | // save {NAME} | |
289 | Mpc.prototype.save = Mpc.__make_send_arg1('save'); | |
290 | ||
291 | /* | |
292 | * The music database | |
293 | * http://www.musicpd.org/doc/protocol/ch03s06.html | |
294 | */ | |
295 | ||
50dafc4c MF |
296 | /* |
297 | * Connection settings | |
298 | * http://www.musicpd.org/doc/protocol/ch03s08.html | |
299 | */ | |
300 | ||
301 | // close | |
302 | Mpc.prototype.close = Mpc.__make_send_void('close'); | |
303 | // kill | |
304 | Mpc.prototype.kill = Mpc.__make_send_void('kill'); | |
305 | // password {PASSWORD} | |
306 | Mpc.prototype.password = Mpc.__make_send_arg1('password'); | |
307 | // ping | |
308 | Mpc.prototype.ping = Mpc.__make_send_void('ping'); | |
024ea284 MF |
309 | |
310 | /* | |
311 | * Audio output devices | |
312 | * http://www.musicpd.org/doc/protocol/ch03s09.html | |
313 | */ | |
314 | ||
315 | // disableoutput {ID} | |
316 | Mpc.prototype.disableoutput = Mpc.__make_send_arg1('disableoutput'); | |
317 | // enableoutput {ID} | |
318 | Mpc.prototype.enableoutput = Mpc.__make_send_arg1('enableoutput'); | |
319 | // outputs | |
320 | Mpc.prototype.outputs = Mpc.__make_send_void('outputs'); | |
321 | ||
322 | /* | |
323 | * Reflection | |
324 | * http://www.musicpd.org/doc/protocol/ch03s10.html | |
325 | */ | |
326 | ||
327 | // config | |
328 | Mpc.prototype.config = Mpc.__make_send_void('config'); | |
329 | // commands | |
330 | Mpc.prototype.commands = Mpc.__make_send_void('commands'); | |
331 | // notcommands | |
332 | Mpc.prototype.notcommands = Mpc.__make_send_void('notcommands'); | |
333 | // tagtypes | |
334 | Mpc.prototype.tagtypes = Mpc.__make_send_void('tagtypes'); | |
335 | // urlhandlers | |
336 | Mpc.prototype.urlhandlers = Mpc.__make_send_void('urlhandlers'); | |
337 | // decoders | |
338 | Mpc.prototype.decoders = Mpc.__make_send_void('decoders'); | |
339 | ||
340 | /* | |
341 | * Client to client | |
342 | * http://www.musicpd.org/doc/protocol/ch03s11.html | |
343 | */ | |
344 | ||
345 | // subscribe {NAME} | |
346 | Mpc.prototype.subscribe = Mpc.__make_send_arg1('subscribe'); | |
347 | // unsubscribe {NAME} | |
348 | Mpc.prototype.unsubscribe = Mpc.__make_send_arg1('unsubscribe'); | |
349 | // channels | |
350 | Mpc.prototype.channels = Mpc.__make_send_void('channels'); | |
351 | // readmessages | |
352 | Mpc.prototype.readmessages = Mpc.__make_send_void('readmessages'); | |
353 | // sendmessage {CHANNEL} {TEXT} | |
354 | Mpc.prototype.sendmessage = Mpc.__make_send_arg2('sendmessage'); |