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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
1020001c | 3 | * Copyright (C) 2006, 2007 Richard Kettlewell |
460b9539 | 4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
18 | * USA | |
19 | */ | |
0e4472a0 | 20 | /** @file lib/eclient.h |
21 | * @brief Client code for event-driven programs | |
22 | */ | |
460b9539 | 23 | |
24 | #ifndef ECLIENT_H | |
25 | #define ECLIENT_H | |
26 | ||
5626f6d2 | 27 | /* Asynchronous client interface */ |
460b9539 | 28 | |
0e4472a0 | 29 | /** @brief Handle type */ |
460b9539 | 30 | typedef struct disorder_eclient disorder_eclient; |
31 | ||
32 | struct queue_entry; | |
33 | ||
0e4472a0 | 34 | /** @brief Set to read from the FD */ |
35 | #define DISORDER_POLL_READ 1u | |
36 | ||
37 | /** @brief Set to write to the FD */ | |
38 | #define DISORDER_POLL_WRITE 2u | |
460b9539 | 39 | |
0e4472a0 | 40 | /** @brief Callbacks for all clients |
41 | * | |
42 | * These must all be valid. | |
43 | */ | |
460b9539 | 44 | typedef struct disorder_eclient_callbacks { |
1f3ce240 | 45 | /** @brief Called when a communication error occurs. |
0e4472a0 | 46 | * @param u from disorder_eclient_new() |
47 | * @param msg error message | |
1f3ce240 RK |
48 | * |
49 | * This might be called at any time, and indicates a low-level error, | |
50 | * e.g. connection refused by the server. It does not mean that any requests | |
51 | * made of the owning eclient will not be fulfilled at some point. | |
0e4472a0 | 52 | */ |
460b9539 | 53 | void (*comms_error)(void *u, const char *msg); |
460b9539 | 54 | |
0e4472a0 | 55 | /** @brief Called when a command fails (including initial authorization). |
56 | * @param u from disorder_eclient_new() | |
57 | * @param v from failed command, or NULL if during setup | |
58 | * @param msg error message | |
1f3ce240 RK |
59 | * |
60 | * This call is obsolete at least in its current form, in which it is used to | |
61 | * report most errors from most requests. Ultimately requests-specific | |
62 | * errors will be reported in a request-specific way rather than via this | |
63 | * generic callback. | |
0e4472a0 | 64 | */ |
460b9539 | 65 | void (*protocol_error)(void *u, void *v, int code, const char *msg); |
0e4472a0 | 66 | |
67 | /** @brief Set poll/select flags | |
68 | * @param u from disorder_eclient_new() | |
69 | * @param c handle | |
70 | * @param fd file descriptor | |
71 | * @param mode bitmap (@ref DISORDER_POLL_READ and/or @ref DISORDER_POLL_WRITE) | |
72 | * | |
73 | * Before @p fd is closed you will always get a call with @p mode = 0. | |
74 | */ | |
460b9539 | 75 | void (*poll)(void *u, disorder_eclient *c, int fd, unsigned mode); |
460b9539 | 76 | |
0e4472a0 | 77 | /** @brief Report current activity |
78 | * @param u from disorder_eclient_new() | |
79 | * @param msg Current activity or NULL | |
80 | * | |
81 | * Called with @p msg = NULL when there's nothing going on. | |
82 | */ | |
460b9539 | 83 | void (*report)(void *u, const char *msg); |
460b9539 | 84 | } disorder_eclient_callbacks; |
85 | ||
0e4472a0 | 86 | /** @brief Callbacks for log clients |
87 | * | |
88 | * All of these are allowed to be a null pointers in which case you don't get | |
89 | * told about that log event. | |
90 | * | |
91 | * See disorder_protocol(5) for full documentation. | |
92 | */ | |
460b9539 | 93 | typedef struct disorder_eclient_log_callbacks { |
0e4472a0 | 94 | /** @brief Called on (re-)connection */ |
460b9539 | 95 | void (*connected)(void *v); |
460b9539 | 96 | |
97 | void (*completed)(void *v, const char *track); | |
98 | void (*failed)(void *v, const char *track, const char *status); | |
99 | void (*moved)(void *v, const char *user); | |
100 | void (*playing)(void *v, const char *track, const char *user/*maybe 0*/); | |
101 | void (*queue)(void *v, struct queue_entry *q); | |
102 | void (*recent_added)(void *v, struct queue_entry *q); | |
103 | void (*recent_removed)(void *v, const char *id); | |
104 | void (*removed)(void *v, const char *id, const char *user/*maybe 0*/); | |
105 | void (*scratched)(void *v, const char *track, const char *user); | |
106 | void (*state)(void *v, unsigned long state); | |
107 | void (*volume)(void *v, int left, int right); | |
e025abff | 108 | void (*rescanned)(void *v); |
460b9539 | 109 | } disorder_eclient_log_callbacks; |
110 | ||
111 | /* State bits */ | |
0e4472a0 | 112 | |
113 | /** @brief Play is enabled */ | |
114 | #define DISORDER_PLAYING_ENABLED 0x00000001 | |
115 | ||
116 | /** @brief Random play is enabled */ | |
117 | #define DISORDER_RANDOM_ENABLED 0x00000002 | |
118 | ||
8f763f1b RK |
119 | /** @brief Track is paused |
120 | * | |
121 | * This is only meaningful if @ref DISORDER_PLAYING is set | |
122 | */ | |
0e4472a0 | 123 | #define DISORDER_TRACK_PAUSED 0x00000004 |
460b9539 | 124 | |
8f763f1b RK |
125 | /** @brief Track is playing |
126 | * | |
127 | * This can be set even if the current track is paused (in which case @ref | |
128 | * DISORDER_TRACK_PAUSED) will also be set. | |
129 | */ | |
130 | #define DISORDER_PLAYING 0x00000008 | |
131 | ||
132 | /** @brief Connected to server | |
133 | * | |
134 | * By connected it is meant that commands have a reasonable chance of being | |
135 | * processed soon, not merely that a TCP connection exists - for instance if | |
136 | * the client is still authenticating then that does not count as connected. | |
137 | */ | |
138 | #define DISORDER_CONNECTED 0x00000010 | |
139 | ||
00959300 RK |
140 | char *disorder_eclient_interpret_state(unsigned long statebits); |
141 | ||
460b9539 | 142 | struct queue_entry; |
143 | struct kvp; | |
144 | struct sink; | |
145 | ||
146 | /* Completion callbacks. These provide the result of operations to the caller. | |
147 | * It is always allowed for these to be null pointers if you don't care about | |
148 | * the result. */ | |
149 | ||
53fa91bb RK |
150 | /** @brief Trivial completion callback |
151 | * @param v User data | |
152 | * @param error Error string or NULL on succes | |
153 | */ | |
154 | typedef void disorder_eclient_no_response(void *v, | |
155 | const char *error); | |
460b9539 | 156 | |
1bd1b63c RK |
157 | /** @brief String result completion callback |
158 | * @param v User data | |
06bfbba4 RK |
159 | * @param error Error string or NULL on succes |
160 | * @param value or NULL if not found | |
1bd1b63c | 161 | * |
06bfbba4 RK |
162 | * @p error will be NULL on success. In this case @p value will be the result |
163 | * (which might be NULL for disorder_eclient_get(), | |
164 | * disorder_eclient_get_global() and disorder_eclient_userinfo()). | |
165 | * | |
166 | * @p error will be non-NULL on failure. In this case @p value is always NULL. | |
1bd1b63c | 167 | */ |
06bfbba4 RK |
168 | typedef void disorder_eclient_string_response(void *v, |
169 | const char *error, | |
170 | const char *value); | |
460b9539 | 171 | |
172 | typedef void disorder_eclient_integer_response(void *v, long value); | |
173 | /* completion callback with a integer result */ | |
174 | ||
175 | typedef void disorder_eclient_volume_response(void *v, int l, int r); | |
176 | /* completion callback with a pair of integer results */ | |
177 | ||
178 | typedef void disorder_eclient_queue_response(void *v, struct queue_entry *q); | |
179 | /* completion callback for queue/recent listing */ | |
180 | ||
181 | typedef void disorder_eclient_list_response(void *v, int nvec, char **vec); | |
182 | /* completion callback for file listing etc */ | |
183 | ||
184 | disorder_eclient *disorder_eclient_new(const disorder_eclient_callbacks *cb, | |
185 | void *u); | |
186 | /* Create a new client */ | |
187 | ||
188 | void disorder_eclient_close(disorder_eclient *c); | |
189 | /* Close C */ | |
190 | ||
8f763f1b | 191 | unsigned long disorder_eclient_state(const disorder_eclient *c); |
ad58ebcc | 192 | |
460b9539 | 193 | void disorder_eclient_polled(disorder_eclient *c, unsigned mode); |
194 | /* Should be called when c's FD is readable and/or writable, and in any case | |
195 | * from time to time (so that retries work). */ | |
196 | ||
197 | int disorder_eclient_version(disorder_eclient *c, | |
198 | disorder_eclient_string_response *completed, | |
199 | void *v); | |
200 | /* fetch the server version */ | |
201 | ||
202 | int disorder_eclient_play(disorder_eclient *c, | |
203 | const char *track, | |
204 | disorder_eclient_no_response *completed, | |
205 | void *v); | |
206 | /* add a track to the queue */ | |
207 | ||
208 | int disorder_eclient_pause(disorder_eclient *c, | |
209 | disorder_eclient_no_response *completed, | |
210 | void *v); | |
211 | /* add a track to the queue */ | |
212 | ||
213 | int disorder_eclient_resume(disorder_eclient *c, | |
214 | disorder_eclient_no_response *completed, | |
215 | void *v); | |
216 | /* add a track to the queue */ | |
217 | ||
218 | int disorder_eclient_scratch(disorder_eclient *c, | |
219 | const char *id, | |
220 | disorder_eclient_no_response *completed, | |
221 | void *v); | |
222 | /* scratch a track by ID */ | |
223 | ||
224 | int disorder_eclient_scratch_playing(disorder_eclient *c, | |
225 | disorder_eclient_no_response *completed, | |
226 | void *v); | |
227 | /* scratch the playing track whatever it is */ | |
228 | ||
229 | int disorder_eclient_remove(disorder_eclient *c, | |
230 | const char *id, | |
231 | disorder_eclient_no_response *completed, | |
232 | void *v); | |
233 | /* remove a track from the queue */ | |
234 | ||
235 | int disorder_eclient_moveafter(disorder_eclient *c, | |
236 | const char *target, | |
237 | int nids, | |
238 | const char **ids, | |
239 | disorder_eclient_no_response *completed, | |
240 | void *v); | |
241 | /* move tracks within the queue */ | |
242 | ||
243 | int disorder_eclient_playing(disorder_eclient *c, | |
244 | disorder_eclient_queue_response *completed, | |
245 | void *v); | |
246 | /* find the currently playing track (0 for none) */ | |
247 | ||
248 | int disorder_eclient_queue(disorder_eclient *c, | |
249 | disorder_eclient_queue_response *completed, | |
250 | void *v); | |
251 | /* list recently played tracks */ | |
252 | ||
253 | int disorder_eclient_recent(disorder_eclient *c, | |
254 | disorder_eclient_queue_response *completed, | |
255 | void *v); | |
256 | /* list recently played tracks */ | |
257 | ||
258 | int disorder_eclient_files(disorder_eclient *c, | |
259 | disorder_eclient_list_response *completed, | |
260 | const char *dir, | |
261 | const char *re, | |
262 | void *v); | |
263 | /* list files in a directory, matching RE if not a null pointer */ | |
264 | ||
265 | int disorder_eclient_dirs(disorder_eclient *c, | |
266 | disorder_eclient_list_response *completed, | |
267 | const char *dir, | |
268 | const char *re, | |
269 | void *v); | |
270 | /* list directories in a directory, matching RE if not a null pointer */ | |
271 | ||
272 | int disorder_eclient_namepart(disorder_eclient *c, | |
273 | disorder_eclient_string_response *completed, | |
274 | const char *track, | |
275 | const char *context, | |
276 | const char *part, | |
277 | void *v); | |
278 | /* look up a track name part */ | |
279 | ||
280 | int disorder_eclient_length(disorder_eclient *c, | |
281 | disorder_eclient_integer_response *completed, | |
282 | const char *track, | |
283 | void *v); | |
284 | /* look up a track name length */ | |
285 | ||
286 | int disorder_eclient_volume(disorder_eclient *c, | |
287 | disorder_eclient_volume_response *callback, | |
288 | int l, int r, | |
289 | void *v); | |
290 | /* If L and R are both -ve gets the volume. | |
291 | * If neither are -ve then sets the volume. | |
292 | * Otherwise asserts! | |
293 | */ | |
294 | ||
295 | int disorder_eclient_enable(disorder_eclient *c, | |
296 | disorder_eclient_no_response *callback, | |
297 | void *v); | |
298 | int disorder_eclient_disable(disorder_eclient *c, | |
299 | disorder_eclient_no_response *callback, | |
300 | void *v); | |
301 | int disorder_eclient_random_enable(disorder_eclient *c, | |
302 | disorder_eclient_no_response *callback, | |
303 | void *v); | |
304 | int disorder_eclient_random_disable(disorder_eclient *c, | |
305 | disorder_eclient_no_response *callback, | |
306 | void *v); | |
307 | /* Enable/disable play/random play */ | |
308 | ||
309 | int disorder_eclient_resolve(disorder_eclient *c, | |
310 | disorder_eclient_string_response *completed, | |
311 | const char *track, | |
312 | void *v); | |
313 | /* Resolve aliases */ | |
314 | ||
315 | int disorder_eclient_log(disorder_eclient *c, | |
316 | const disorder_eclient_log_callbacks *callbacks, | |
317 | void *v); | |
318 | /* Make this a log client (forever - it automatically becomes one again upon | |
319 | * reconnection) */ | |
320 | ||
321 | int disorder_eclient_get(disorder_eclient *c, | |
322 | disorder_eclient_string_response *completed, | |
323 | const char *track, const char *pref, | |
324 | void *v); | |
325 | int disorder_eclient_set(disorder_eclient *c, | |
326 | disorder_eclient_no_response *completed, | |
327 | const char *track, const char *pref, | |
328 | const char *value, | |
329 | void *v); | |
330 | int disorder_eclient_unset(disorder_eclient *c, | |
331 | disorder_eclient_no_response *completed, | |
332 | const char *track, const char *pref, | |
333 | void *v); | |
334 | /* Get/set preference values */ | |
335 | ||
336 | int disorder_eclient_search(disorder_eclient *c, | |
337 | disorder_eclient_list_response *completed, | |
338 | const char *terms, | |
339 | void *v); | |
340 | ||
7858930d | 341 | int disorder_eclient_nop(disorder_eclient *c, |
342 | disorder_eclient_no_response *completed, | |
343 | void *v); | |
344 | ||
2a10b70b RK |
345 | int disorder_eclient_new_tracks(disorder_eclient *c, |
346 | disorder_eclient_list_response *completed, | |
347 | int max, | |
348 | void *v); | |
a99c4e9a RK |
349 | |
350 | int disorder_eclient_rtp_address(disorder_eclient *c, | |
351 | disorder_eclient_list_response *completed, | |
352 | void *v); | |
353 | ||
ffc4dbaf RK |
354 | int disorder_eclient_users(disorder_eclient *c, |
355 | disorder_eclient_list_response *completed, | |
356 | void *v); | |
4aa8a0a4 RK |
357 | int disorder_eclient_deluser(disorder_eclient *c, |
358 | disorder_eclient_no_response *completed, | |
359 | const char *user, | |
360 | void *v); | |
e61aef23 RK |
361 | int disorder_eclient_userinfo(disorder_eclient *c, |
362 | disorder_eclient_string_response *completed, | |
363 | const char *user, | |
364 | const char *property, | |
365 | void *v); | |
366 | int disorder_eclient_edituser(disorder_eclient *c, | |
367 | disorder_eclient_no_response *completed, | |
368 | const char *user, | |
369 | const char *property, | |
370 | const char *value, | |
371 | void *v); | |
0d719587 RK |
372 | int disorder_eclient_adduser(disorder_eclient *c, |
373 | disorder_eclient_no_response *completed, | |
374 | const char *user, | |
375 | const char *password, | |
376 | const char *rights, | |
377 | void *v); | |
ffc4dbaf | 378 | |
460b9539 | 379 | #endif |
380 | ||
381 | /* | |
382 | Local Variables: | |
383 | c-basic-offset:2 | |
384 | comment-column:40 | |
385 | fill-column:79 | |
386 | indent-tabs-mode:nil | |
387 | End: | |
388 | */ |