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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 = {}; | |
44 | lines.forEach(function(line) { | |
45 | i = line.indexOf(':'); | |
46 | if (i == -1) | |
47 | return; // Ignores the OK line | |
48 | key = line.substr(0, i); | |
49 | val = line.substr(i + 2); | |
50 | state[key] = val; | |
51 | }); | |
52 | this.state = state; | |
53 | this._cb_update_state(state); | |
54 | break; | |
55 | default: | |
56 | this._cb_update_state(lines, curr); | |
57 | break; | |
58 | } | |
59 | } | |
60 | ||
61 | Mpc.prototype.recv = function(msg) { | |
62 | /* We can get back a bunch of responses in a row, so parse them out */ | |
63 | /* XXX: Do we have to handle partial reads ? like long playlists ... */ | |
64 | lines = msg.split('\n'); | |
65 | var i = 0; | |
66 | while (i < lines.length) { | |
67 | if (lines[i] == 'OK' || lines[i].substr(0, 3) == 'OK ') { | |
68 | this.recv_msg(lines.splice(0, i + 1)); | |
69 | i = 0; | |
70 | } else | |
71 | ++i; | |
72 | } | |
73 | } | |
74 | ||
75 | /* | |
76 | * Command generator helpers. | |
77 | */ | |
78 | ||
79 | Mpc.__make_send_void = function(cmd) { | |
80 | return function() { this.send(cmd); } | |
81 | } | |
82 | ||
83 | Mpc.__make_send_arg1 = function(cmd) { | |
84 | return function(a1) { | |
85 | if (a1 === undefined) | |
e4657cab | 86 | this.err(cmd + ': function requires one argument'); |
50dafc4c MF |
87 | else |
88 | this.send(cmd + ' ' + a1); | |
89 | } | |
90 | } | |
91 | ||
92 | Mpc.__make_send_arg2 = function(cmd) { | |
93 | return function(a1, a2) { | |
94 | if (a1 === undefined || a2 === undefined) | |
e4657cab | 95 | this.err(cmd + ': function requires two arguments'); |
50dafc4c MF |
96 | else |
97 | this.send(cmd + ' ' + a1 + ' ' + a2); | |
98 | } | |
99 | } | |
100 | ||
101 | Mpc.__make_send_opt = function(cmd) { | |
102 | return function(arg) { | |
103 | if (arg === undefined) | |
104 | arg = ''; | |
105 | this.send(cmd + ' ' + arg); | |
106 | }; | |
107 | } | |
108 | ||
109 | Mpc.__make_send_range = function(cmd, min, max, def) { | |
110 | return function(arg) { | |
111 | if (arg === undefined) | |
112 | arg = def; | |
113 | if (arg >= min && arg <= max) | |
114 | this.send(cmd + ' ' + arg); | |
115 | else | |
e4657cab | 116 | this.err(cmd + ': arg must be [' + min + ',' + max + '] but got "' + arg + '"'); |
50dafc4c MF |
117 | }; |
118 | } | |
119 | ||
120 | /* | |
121 | * Querying MPD's status | |
122 | * http://www.musicpd.org/doc/protocol/ch03.html#idp118752 | |
123 | */ | |
124 | ||
125 | // clearerror | |
126 | Mpc.prototype.clearerror = Mpc.__make_send_void('clearerror'); | |
127 | // currentsong | |
128 | Mpc.prototype.currentsong = Mpc.__make_send_void('currentsong'); | |
129 | // idle [SUBSYSTEMS...] | |
130 | // TODO | |
131 | // status | |
132 | Mpc.prototype.status = Mpc.__make_send_void('status'); | |
133 | // stats | |
134 | Mpc.prototype.stats = Mpc.__make_send_void('stats'); | |
135 | ||
136 | /* | |
137 | * Playback options | |
138 | * http://www.musicpd.org/doc/protocol/ch03s02.html | |
139 | */ | |
140 | ||
141 | // consume {STATE} | |
142 | Mpc.prototype.consume = Mpc.__make_send_range('consume', 0, 1, 1); | |
143 | // crossfade {SECONDS} | |
f5ed7157 | 144 | Mpc.prototype.crossfade = Mpc.__make_send_arg1('crossfade'); |
50dafc4c MF |
145 | // mixrampdb {deciBels} |
146 | Mpc.prototype.mixrampdb = Mpc.__make_send_arg1('mixrampdb'); | |
147 | // mixrampdelay {SECONDS|nan} | |
148 | // Note: Probably should handle javascript NaN here. | |
149 | Mpc.prototype.mixrampdelay = Mpc.__make_send_arg1('mixrampdelay'); | |
150 | // random {STATE} | |
151 | Mpc.prototype.random = Mpc.__make_send_range('random', 0, 1, 1); | |
152 | // repeat {STATE} | |
153 | Mpc.prototype.repeat = Mpc.__make_send_range('repeat', 0, 1, 1); | |
154 | // setvol {VOL} | |
155 | Mpc.prototype.setvol = Mpc.__make_send_range('setvol', 0, 100); | |
156 | // single {STATE} | |
157 | Mpc.prototype.single = Mpc.__make_send_range('single', 0, 1, 1); | |
158 | // replay_gain_mode {MODE} | |
159 | Mpc.prototype.replay_gain_mode = Mpc.__make_send_arg1('replay_gain_mode'); | |
160 | // replay_gain_status | |
161 | ||
162 | /* | |
163 | * Controlling playback | |
164 | * http://www.musicpd.org/doc/protocol/ch03s03.html | |
165 | */ | |
166 | ||
167 | // next | |
168 | Mpc.prototype.next = Mpc.__make_send_void('next'); | |
169 | // pause {PAUSE} | |
170 | Mpc.prototype.pause = Mpc.__make_send_range('pause', 0, 1, 1); | |
171 | // play [SONGPOS] | |
172 | Mpc.prototype.play = Mpc.__make_send_opt('play'); | |
173 | // playid [SONGID] | |
174 | Mpc.prototype.playid = Mpc.__make_send_opt('playid'); | |
175 | // previous | |
176 | Mpc.prototype.previous = Mpc.__make_send_void('previous'); | |
177 | // seek {SONGPOS} {TIME} | |
178 | Mpc.prototype.seek = Mpc.__make_send_arg2('seek'); | |
179 | // seekid {SONGID} {TIME} | |
180 | Mpc.prototype.seekid = Mpc.__make_send_arg2('seekid'); | |
181 | // seekcur {TIME} | |
182 | Mpc.prototype.seekcur = Mpc.__make_send_arg1('seek'); | |
183 | // stop | |
184 | Mpc.prototype.stop = Mpc.__make_send_void('stop'); | |
185 | ||
186 | /* | |
187 | * Connection settings | |
188 | * http://www.musicpd.org/doc/protocol/ch03s08.html | |
189 | */ | |
190 | ||
191 | // close | |
192 | Mpc.prototype.close = Mpc.__make_send_void('close'); | |
193 | // kill | |
194 | Mpc.prototype.kill = Mpc.__make_send_void('kill'); | |
195 | // password {PASSWORD} | |
196 | Mpc.prototype.password = Mpc.__make_send_arg1('password'); | |
197 | // ping | |
198 | Mpc.prototype.ping = Mpc.__make_send_void('ping'); | |
024ea284 MF |
199 | |
200 | /* | |
201 | * Audio output devices | |
202 | * http://www.musicpd.org/doc/protocol/ch03s09.html | |
203 | */ | |
204 | ||
205 | // disableoutput {ID} | |
206 | Mpc.prototype.disableoutput = Mpc.__make_send_arg1('disableoutput'); | |
207 | // enableoutput {ID} | |
208 | Mpc.prototype.enableoutput = Mpc.__make_send_arg1('enableoutput'); | |
209 | // outputs | |
210 | Mpc.prototype.outputs = Mpc.__make_send_void('outputs'); | |
211 | ||
212 | /* | |
213 | * Reflection | |
214 | * http://www.musicpd.org/doc/protocol/ch03s10.html | |
215 | */ | |
216 | ||
217 | // config | |
218 | Mpc.prototype.config = Mpc.__make_send_void('config'); | |
219 | // commands | |
220 | Mpc.prototype.commands = Mpc.__make_send_void('commands'); | |
221 | // notcommands | |
222 | Mpc.prototype.notcommands = Mpc.__make_send_void('notcommands'); | |
223 | // tagtypes | |
224 | Mpc.prototype.tagtypes = Mpc.__make_send_void('tagtypes'); | |
225 | // urlhandlers | |
226 | Mpc.prototype.urlhandlers = Mpc.__make_send_void('urlhandlers'); | |
227 | // decoders | |
228 | Mpc.prototype.decoders = Mpc.__make_send_void('decoders'); | |
229 | ||
230 | /* | |
231 | * Client to client | |
232 | * http://www.musicpd.org/doc/protocol/ch03s11.html | |
233 | */ | |
234 | ||
235 | // subscribe {NAME} | |
236 | Mpc.prototype.subscribe = Mpc.__make_send_arg1('subscribe'); | |
237 | // unsubscribe {NAME} | |
238 | Mpc.prototype.unsubscribe = Mpc.__make_send_arg1('unsubscribe'); | |
239 | // channels | |
240 | Mpc.prototype.channels = Mpc.__make_send_void('channels'); | |
241 | // readmessages | |
242 | Mpc.prototype.readmessages = Mpc.__make_send_void('readmessages'); | |
243 | // sendmessage {CHANNEL} {TEXT} | |
244 | Mpc.prototype.sendmessage = Mpc.__make_send_arg2('sendmessage'); |