2 (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu)
3 This project's homepage is: http://www.musicpd.org
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions
9 - Redistributions of source code must retain the above copyright
10 notice, this list of conditions and the following disclaimer.
12 - Redistributions in binary form must reproduce the above copyright
13 notice, this list of conditions and the following disclaimer in the
14 documentation and/or other materials provided with the distribution.
16 - Neither the name of the Music Player Daemon nor the names of its
17 contributors may be used to endorse or promote products derived from
18 this software without specific prior written permission.
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
24 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 #ifndef LIBMPDCLIENT_H
37 #define LIBMPDCLIENT_H
41 #define MPD_BUFFER_MAX_LENGTH 50000
42 #define MPD_WELCOME_MESSAGE "OK MPD "
44 #define MPD_ERROR_TIMEOUT 10 /* timeout trying to talk to mpd */
45 #define MPD_ERROR_SYSTEM 11 /* system error */
46 #define MPD_ERROR_UNKHOST 12 /* unknown host */
47 #define MPD_ERROR_CONNPORT 13 /* problems connecting to port on host */
48 #define MPD_ERROR_NOTMPD 14 /* mpd not running on port at host */
49 #define MPD_ERROR_NORESPONSE 15 /* no response on attempting to connect */
50 #define MPD_ERROR_SENDING 16 /* error sending command */
51 #define MPD_ERROR_CONNCLOSED 17 /* connection closed by mpd */
52 #define MPD_ERROR_ACK 18 /* ACK returned! */
53 #define MPD_ERROR_BUFFEROVERRUN 19 /* Buffer was overrun! */
55 #define MPD_ACK_ERROR_UNK -1
56 #define MPD_ERROR_AT_UNK -1
58 #define MPD_ACK_ERROR_NOT_LIST 1
59 #define MPD_ACK_ERROR_ARG 2
60 #define MPD_ACK_ERROR_PASSWORD 3
61 #define MPD_ACK_ERROR_PERMISSION 4
62 #define MPD_ACK_ERROR_UNKNOWN_CMD 5
64 #define MPD_ACK_ERROR_NO_EXIST 50
65 #define MPD_ACK_ERROR_PLAYLIST_MAX 51
66 #define MPD_ACK_ERROR_SYSTEM 52
67 #define MPD_ACK_ERROR_PLAYLIST_LOAD 53
68 #define MPD_ACK_ERROR_UPDATE_ALREADY 54
69 #define MPD_ACK_ERROR_PLAYER_SYNC 55
70 #define MPD_ACK_ERROR_EXIST 56
76 /* internal stuff don't touch this struct */
77 typedef struct _mpd_ReturnElement {
83 * holds info about connection to mpd
84 * use error, and errorStr to detect errors
86 typedef struct _mpd_Connection {
87 /* use this to check the version of mpd */
89 /* IMPORTANT, you want to get the error messages from here */
90 char errorStr[MPD_BUFFER_MAX_LENGTH + 1];
93 /* this will be set to MPD_ERROR_* if there is an error, 0 if not */
95 /* DON'T TOUCH any of the rest of this stuff */
97 char buffer[MPD_BUFFER_MAX_LENGTH + 1];
104 mpd_ReturnElement *returnElement;
105 struct timeval timeout;
109 * use this to open a new connection
110 * you should use mpd_closeConnection, when your done with the connection,
111 * even if an error has occurred
112 * _timeout_ is the connection timeout period in seconds
114 mpd_Connection *mpd_newConnection(const char *host, int port,
117 void mpd_setConnectionTimeout(mpd_Connection * connection,
120 /* mpd_closeConnection
121 * use this to close a connection and free'ing subsequent memory
123 void mpd_closeConnection(mpd_Connection * connection);
128 void mpd_clearError(mpd_Connection * connection);
132 /* use these with status.state to determine what state the player is in */
133 #define MPD_STATUS_STATE_UNKNOWN 0
134 #define MPD_STATUS_STATE_STOP 1
135 #define MPD_STATUS_STATE_PLAY 2
136 #define MPD_STATUS_STATE_PAUSE 3
138 /* us this with status.volume to determine if mpd has volume support */
139 #define MPD_STATUS_NO_VOLUME -1
142 * holds info return from status command
144 typedef struct mpd_Status {
145 /* 0-100, or MPD_STATUS_NO_VOLUME when there is no volume support */
147 /* 1 if repeat is on, 0 otherwise */
149 /* 1 if random is on, 0 otherwise */
151 /* playlist length */
153 /* playlist, use this to determine when the playlist has changed */
155 /* use with MPD_STATUS_STATE_* to determine state of player */
157 /* crossfade setting in seconds */
159 /* if a song is currently selected (always the case when state is
160 * PLAY or PAUSE), this is the position of the currently
161 * playing song in the playlist, beginning with 0
164 /* Song ID of the currently selected song */
166 /* time in seconds that have elapsed in the currently playing/paused
170 /* length in seconds of the currently playing/paused song */
172 /* current bit rate in kbs */
174 /* audio sample rate */
175 unsigned int sampleRate;
180 /* 1 if mpd is updating, 0 otherwise */
186 void mpd_sendStatusCommand(mpd_Connection * connection);
189 * returns status info, be sure to free it with mpd_freeStatus()
190 * call this after mpd_sendStatusCommand()
192 mpd_Status *mpd_getStatus(mpd_Connection * connection);
195 * free's status info malloc'd and returned by mpd_getStatus
197 void mpd_freeStatus(mpd_Status * status);
199 typedef struct _mpd_Stats {
203 unsigned long uptime;
204 unsigned long dbUpdateTime;
205 unsigned long playTime;
206 unsigned long dbPlayTime;
209 void mpd_sendStatsCommand(mpd_Connection * connection);
211 mpd_Stats *mpd_getStats(mpd_Connection * connection);
213 void mpd_freeStats(mpd_Stats * stats);
217 #define MPD_SONG_NO_TIME -1
218 #define MPD_SONG_NO_NUM -1
219 #define MPD_SONG_NO_ID -1
222 * for storing song info returned by mpd
224 typedef struct _mpd_Song {
225 /* filename of song */
227 /* artist, maybe NULL if there is no tag */
229 /* title, maybe NULL if there is no tag */
231 /* album, maybe NULL if there is no tag */
233 /* track, maybe NULL if there is no tag */
235 /* name, maybe NULL if there is no tag; it's the name of the current
236 * song, f.e. the icyName of the stream */
238 /* length of song in seconds, check that it is not MPD_SONG_NO_TIME */
240 /* if plchanges/playlistinfo/playlistid used, is the position of the
241 * song in the playlist */
243 /* song id for a song in the playlist */
248 * use to allocate memory for a new mpd_Song
249 * file, artist, etc all initialized to NULL
250 * if your going to assign values to file, artist, etc
251 * be sure to malloc or strdup the memory
252 * use mpd_freeSong to free the memory for the mpd_Song, it will also
253 * free memory for file, artist, etc, so don't do it yourself
255 mpd_Song *mpd_newSong();
258 * use to free memory allocated by mpd_newSong
259 * also it will free memory pointed to by file, artist, etc, so be careful
261 void mpd_freeSong(mpd_Song * song);
264 * works like strDup, but for a mpd_Song
266 mpd_Song *mpd_songDup(mpd_Song * song);
268 /* DIRECTORY STUFF */
271 * used to store info fro directory (right now that just the path)
273 typedef struct _mpd_Directory {
278 * allocates memory for a new directory
279 * use mpd_freeDirectory to free this memory
281 mpd_Directory *mpd_newDirectory();
284 * used to free memory allocated with mpd_newDirectory, and it frees
285 * path of mpd_Directory, so be careful
287 void mpd_freeDirectory(mpd_Directory * directory);
290 * works like strdup, but for mpd_Directory
292 mpd_Directory *mpd_directoryDup(mpd_Directory * directory);
294 /* PLAYLISTFILE STUFF */
297 * stores info about playlist file returned by lsinfo
299 typedef struct _mpd_PlaylistFile {
303 /* mpd_newPlaylistFile
304 * allocates memory for new mpd_PlaylistFile, path is set to NULL
305 * free this memory with mpd_freePlaylistFile
307 mpd_PlaylistFile *mpd_newPlaylistFile();
310 * free memory allocated for freePlaylistFile, will also free
311 * path, so be careful
313 void mpd_freePlaylistFile(mpd_PlaylistFile * playlist);
315 /* mpd_playlistFileDup
316 * works like strdup, but for mpd_PlaylistFile
318 mpd_PlaylistFile *mpd_playlistFileDup(mpd_PlaylistFile * playlist);
320 /* INFO ENTITY STUFF */
322 /* the type of entity returned from one of the commands that generates info
323 * use in conjunction with mpd_InfoEntity.type
325 #define MPD_INFO_ENTITY_TYPE_DIRECTORY 0
326 #define MPD_INFO_ENTITY_TYPE_SONG 1
327 #define MPD_INFO_ENTITY_TYPE_PLAYLISTFILE 2
330 * stores info on stuff returned info commands
332 typedef struct mpd_InfoEntity {
333 /* the type of entity, use with MPD_INFO_ENTITY_TYPE_* to determine
334 * what this entity is (song, directory, etc...)
337 /* the actual data you want, mpd_Song, mpd_Directory, etc */
339 mpd_Directory *directory;
341 mpd_PlaylistFile *playlistFile;
345 mpd_InfoEntity *mpd_newInfoEntity();
347 void mpd_freeInfoEntity(mpd_InfoEntity * entity);
349 /* INFO COMMANDS AND STUFF */
351 /* use this function to loop over after calling Info/Listall functions */
352 mpd_InfoEntity *mpd_getNextInfoEntity(mpd_Connection * connection);
354 /* fetches the currently seeletect song (the song referenced by status->song
355 * and status->songid*/
356 void mpd_sendCurrentSongCommand(mpd_Connection * connection);
358 /* songNum of -1, means to display the whole list */
359 void mpd_sendPlaylistInfoCommand(mpd_Connection * connection,
362 /* use this to get the changes in the playlist since version _playlist_ */
363 void mpd_sendPlChangesCommand(mpd_Connection * connection,
366 /* recursivel fetches all songs/dir/playlists in "dir* (no metadata is
368 void mpd_sendListallCommand(mpd_Connection * connection,
371 /* same as sendListallCommand, but also metadata is returned */
372 void mpd_sendListallInfoCommand(mpd_Connection * connection,
375 /* non-recursive version of ListallInfo */
376 void mpd_sendLsInfoCommand(mpd_Connection * connection,
379 #define MPD_TABLE_ARTIST 0
380 #define MPD_TABLE_ALBUM 1
381 #define MPD_TABLE_TITLE 2
382 #define MPD_TABLE_FILENAME 3
384 void mpd_sendSearchCommand(mpd_Connection * connection, int table,
387 void mpd_sendFindCommand(mpd_Connection * connection, int table,
390 /* LIST TAG COMMANDS */
392 /* use this function fetch next artist entry, be sure to free the returned
393 * string. NULL means there are no more. Best used with sendListArtists
395 char *mpd_getNextArtist(mpd_Connection * connection);
397 char *mpd_getNextAlbum(mpd_Connection * connection);
399 /* list artist or albums by artist, arg1 should be set to the artist if
400 * listing albums by a artist, otherwise NULL for listing all artists or albums
402 void mpd_sendListCommand(mpd_Connection * connection, int table,
405 /* SIMPLE COMMANDS */
407 void mpd_sendAddCommand(mpd_Connection * connection,
410 void mpd_sendDeleteCommand(mpd_Connection * connection,
413 void mpd_sendDeleteIdCommand(mpd_Connection * connection,
416 void mpd_sendSaveCommand(mpd_Connection * connection,
419 void mpd_sendLoadCommand(mpd_Connection * connection,
422 void mpd_sendRmCommand(mpd_Connection * connection,
425 void mpd_sendShuffleCommand(mpd_Connection * connection);
427 void mpd_sendClearCommand(mpd_Connection * connection);
429 /* use this to start playing at the beginning, useful when in random mode */
430 #define MPD_PLAY_AT_BEGINNING -1
432 void mpd_sendPlayCommand(mpd_Connection * connection, int songNum);
434 void mpd_sendPlayIdCommand(mpd_Connection * connection,
437 void mpd_sendStopCommand(mpd_Connection * connection);
439 void mpd_sendPauseCommand(mpd_Connection * connection,
442 void mpd_sendNextCommand(mpd_Connection * connection);
444 void mpd_sendPrevCommand(mpd_Connection * connection);
446 void mpd_sendMoveCommand(mpd_Connection * connection, int from,
449 void mpd_sendMoveIdCommand(mpd_Connection * connection, int from,
452 void mpd_sendSwapCommand(mpd_Connection * connection, int song1,
455 void mpd_sendSwapIdCommand(mpd_Connection * connection, int song1,
458 void mpd_sendSeekCommand(mpd_Connection * connection, int song,
461 void mpd_sendSeekIdCommand(mpd_Connection * connection, int song,
464 void mpd_sendRepeatCommand(mpd_Connection * connection,
467 void mpd_sendRandomCommand(mpd_Connection * connection,
470 void mpd_sendSetvolCommand(mpd_Connection * connection,
473 /* WARNING: don't use volume command, its depreacted */
474 void mpd_sendVolumeCommand(mpd_Connection * connection,
477 void mpd_sendCrossfadeCommand(mpd_Connection * connection,
480 void mpd_sendUpdateCommand(mpd_Connection * connection,
483 /* returns the update job id, call this after a update command*/
484 int mpd_getUpdateId(mpd_Connection * connection);
486 void mpd_sendPasswordCommand(mpd_Connection * connection,
489 /* after executing a command, when your done with it to get its status
490 * (you want to check connection->error for an error)
492 void mpd_finishCommand(mpd_Connection * connection);
494 /* command list stuff, use this to do things like add files very quickly */
495 void mpd_sendCommandListBegin(mpd_Connection * connection);
497 void mpd_sendCommandListOkBegin(mpd_Connection * connection);
499 void mpd_sendCommandListEnd(mpd_Connection * connection);
501 /* advance to the next listOk
502 * returns 0 if advanced to the next list_OK,
503 * returns -1 if it advanced to an OK or ACK */
504 int mpd_nextListOkCommand(mpd_Connection * connection);
506 /* handles SIGPIPE from full close on the server side */
507 void mpd_signalHandler(int);