src/libmpd-status.c

   1 /* libmpd (high level libmpdclient library)
   2  * Copyright (C) 2004-2009 Qball Cow <qball@sarine.nl>
   3  * Project homepage: http://gmpcwiki.sarine.nl/
   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,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <assert.h>
  23 #define __USE_GNU
  24
  25 #include <string.h>
  26 #include <stdarg.h>
  27 #include <config.h>
  28 #include "debug_printf.h"
  29 #include "libmpd.h"
  30 #include "libmpd-internal.h"
  31
  32 int mpd_stats_update_real(MpdObj *mi, ChangedStatusType* what_changed);
  33
  34 int mpd_status_queue_update(MpdObj *mi)
  35 {
  36
  37         if(!mpd_check_connected(mi))
  38         {
  39                 debug_printf(DEBUG_INFO,"not connected\n");
  40                 return MPD_NOT_CONNECTED;
  41         }
  42         if(mi->status != NULL)
  43         {
  44                 mpd_freeStatus(mi->status);
  45                 mi->status = NULL;
  46         }
  47         return MPD_OK;
  48 }
  49
  50
  51 int mpd_status_update(MpdObj *mi)
  52 {
  53         ChangedStatusType what_changed=0;
  54         if(!mpd_check_connected(mi))
  55         {
  56                 debug_printf(DEBUG_INFO,"not connected\n");
  57                 return MPD_NOT_CONNECTED;
  58         }
  59         if(mpd_lock_conn(mi))
  60         {
  61                 debug_printf(DEBUG_ERROR,"lock failed\n");
  62                 return MPD_LOCK_FAILED;
  63         }
  64
  65
  66
  67         if(mi->status != NULL)
  68         {
  69                 mpd_freeStatus(mi->status);
  70                 mi->status = NULL;
  71         }
  72         mpd_sendStatusCommand(mi->connection);
  73         mi->status = mpd_getStatus(mi->connection);
  74         if(mi->status == NULL)
  75         {
  76                 debug_printf(DEBUG_ERROR,"Failed to grab status from mpd\n");
  77                 mpd_unlock_conn(mi);
  78                 return MPD_STATUS_FAILED;
  79         }
  80         if(mpd_unlock_conn(mi))
  81         {
  82                 debug_printf(DEBUG_ERROR, "Failed to unlock");
  83                 return MPD_LOCK_FAILED;
  84         }
  85         /*
  86          * check for changes
  87          */
  88         /* first save the old status */
  89         memcpy(&(mi->OldState), &(mi->CurrentState), sizeof(MpdServerState));
  90
  91         /* playlist change */
  92         if(mi->CurrentState.playlistid != mi->status->playlist)
  93         {
  94                 /* print debug message */
  95                 debug_printf(DEBUG_INFO, "Playlist has changed!");
  96
  97                 /* We can't trust the current song anymore. so we remove it */
  98                 /* tags might have been updated */
  99                 if(mi->CurrentSong != NULL)
 100                 {
 101                         mpd_freeSong(mi->CurrentSong);
 102                         mi->CurrentSong = NULL;
 103                 }
 104
 105                 /* set MPD_CST_PLAYLIST to be changed */
 106                 what_changed |= MPD_CST_PLAYLIST;
 107
 108         if(mi->CurrentState.playlistLength == mi->status->playlistLength)
 109         {
 110 //            what_changed |= MPD_CST_SONGID;
 111         }
 112                 /* save new id */
 113                 mi->CurrentState.playlistid = mi->status->playlist;
 114         }
 115
 116         if(mi->CurrentState.storedplaylistid != mi->status->storedplaylist)
 117         {
 118                 /* set MPD_CST_QUEUE to be changed */
 119                 what_changed |= MPD_CST_STORED_PLAYLIST;
 120
 121
 122                 /* save new id */
 123                 mi->CurrentState.storedplaylistid = mi->status->storedplaylist;
 124         }
 125
 126
 127         /* state change */
 128         if(mi->CurrentState.state != mi->status->state)
 129         {
 130                 what_changed |= MPD_CST_STATE;
 131                 mi->CurrentState.state = mi->status->state;
 132         }
 133
 134         if(mi->CurrentState.songid != mi->status->songid)
 135         {
 136                 /* print debug message */
 137                 debug_printf(DEBUG_INFO, "Songid has changed %i %i!", mi->OldState.songid, mi->status->songid);
 138
 139                 what_changed |= MPD_CST_SONGID;
 140                 /* save new songid */
 141                 mi->CurrentState.songid = mi->status->songid;
 142
 143         }
 144         if(mi->CurrentState.songpos != mi->status->song)
 145         {
 146                 /* print debug message */
 147                 debug_printf(DEBUG_INFO, "Songpos has changed %i %i!", mi->OldState.songpos, mi->status->song);
 148
 149                 what_changed |= MPD_CST_SONGPOS;
 150                 /* save new songid */
 151                 mi->CurrentState.songpos = mi->status->song;
 152
 153         }
 154
 155         if(mi->CurrentState.repeat != mi->status->repeat)
 156         {
 157                 what_changed |= MPD_CST_REPEAT;
 158                 mi->CurrentState.repeat = mi->status->repeat;
 159         }
 160         if(mi->CurrentState.random != mi->status->random)
 161         {
 162                 what_changed |= MPD_CST_RANDOM;
 163                 mi->CurrentState.random = mi->status->random;
 164         }
 165         if(mi->CurrentState.volume != mi->status->volume)
 166         {
 167                 what_changed |= MPD_CST_VOLUME;
 168                 mi->CurrentState.volume = mi->status->volume;
 169         }
 170         if(mi->CurrentState.xfade != mi->status->crossfade)
 171         {
 172                 what_changed |= MPD_CST_CROSSFADE;
 173                 mi->CurrentState.xfade = mi->status->crossfade;
 174         }
 175         if(mi->CurrentState.totaltime != mi->status->totalTime)
 176         {
 177                 what_changed |= MPD_CST_TOTAL_TIME;
 178                 mi->CurrentState.totaltime = mi->status->totalTime;
 179         }
 180         if(mi->CurrentState.elapsedtime != mi->status->elapsedTime)
 181         {
 182                 what_changed |= MPD_CST_ELAPSED_TIME;
 183                 mi->CurrentState.elapsedtime = mi->status->elapsedTime;
 184         }
 185
 186         /* Check if bitrate changed, happens with vbr encodings. */
 187         if(mi->CurrentState.bitrate != mi->status->bitRate)
 188         {
 189                 what_changed |= MPD_CST_BITRATE;
 190                 mi->CurrentState.bitrate = mi->status->bitRate;
 191         }
 192
 193         /* The following 3 probly only happen on a song change, or is it possible in one song/stream? */
 194         /* Check if the sample rate changed */
 195         if(mi->CurrentState.samplerate != mi->status->sampleRate)
 196         {
 197                 what_changed |= MPD_CST_AUDIOFORMAT;
 198                 mi->CurrentState.samplerate = mi->status->sampleRate;
 199         }
 200
 201         /* check if the sampling depth changed */
 202         if(mi->CurrentState.bits != mi->status->bits)
 203         {
 204                 what_changed |= MPD_CST_AUDIOFORMAT;
 205                 mi->CurrentState.bits = mi->status->bits;
 206         }
 207
 208         /* Check if the amount of audio channels changed */
 209         if(mi->CurrentState.channels != mi->status->channels)
 210         {
 211                 what_changed |= MPD_CST_AUDIOFORMAT;
 212                 mi->CurrentState.channels = mi->status->channels;
 213         }
 214
 215     if(mi->status->error)
 216     {
 217         what_changed |= MPD_CST_SERVER_ERROR;
 218         strcpy(mi->CurrentState.error,mi->status->error);
 219         mpd_sendClearErrorCommand(mi->connection);
 220         mpd_finishCommand(mi->connection);
 221     }
 222     else
 223     {
 224         mi->CurrentState.error[0] ='\0';
 225     }
 226
 227         /* Check if the updating changed,
 228          * If it stopped, also update the stats for the new db-time.
 229          */
 230         if(mi->CurrentState.updatingDb != mi->status->updatingDb )
 231         {
 232                 what_changed |= MPD_CST_UPDATING;
 233                 if(!mi->status->updatingDb)
 234                 {
 235                         mpd_stats_update_real(mi, &what_changed);
 236                 }
 237                 mi->CurrentState.updatingDb = mi->status->updatingDb;
 238         }
 239
 240
 241     mi->CurrentState.playlistLength = mi->status->playlistLength;
 242
 243
 244     /* Detect changed outputs */
 245     if(!mi->has_idle)
 246     {
 247         if(mi->num_outputs >0 )
 248         {
 249             mpd_OutputEntity *output = NULL;
 250             mpd_sendOutputsCommand(mi->connection);
 251             while (( output = mpd_getNextOutput(mi->connection)) != NULL)
 252             {
 253                 if(mi->output_states[output->id] != output->enabled)
 254                 {
 255                     mi->output_states[output->id] = output->enabled;
 256                     what_changed |= MPD_CST_OUTPUT;
 257                 }
 258                 mpd_freeOutputElement(output);
 259             }
 260             mpd_finishCommand(mi->connection);
 261         }
 262         else
 263         {
 264             /* if no outputs, lets fetch them */
 265             mpd_server_update_outputs(mi);
 266             if(mi->num_outputs == 0)
 267             {
 268                 assert("No outputs defined? that cannot be\n");
 269             }
 270             what_changed |= MPD_CST_OUTPUT;
 271         }
 272     }else {
 273         char *name;
 274         mpd_sendGetEventsCommand(mi->connection);
 275         while((name = mpd_getNextEvent(mi->connection))){
 276             if(strcmp(name, "output") == 0){
 277                 what_changed |= MPD_CST_OUTPUT;
 278             }else if (strcmp(name, "database") == 0) {
 279                 if((what_changed&MPD_CST_DATABASE) == 0)
 280                 {
 281                     mpd_stats_update_real(mi, &what_changed);
 282                 }
 283                 what_changed |= MPD_CST_DATABASE;
 284             }else if (strcmp(name, "stored_playlist")==0) {
 285                 what_changed |= MPD_CST_STORED_PLAYLIST;
 286             }else if (strcmp(name, "tag") == 0) {
 287                 what_changed |= MPD_CST_PLAYLIST;
 288             }else if (strcmp (name, "sticker") == 0) {
 289                 what_changed |= MPD_CST_STICKER;
 290             }
 291             free(name);
 292        }
 293        mpd_finishCommand(mi->connection);
 294     }
 295
 296
 297         /* Run the callback */
 298         if((mi->the_status_changed_callback != NULL) && what_changed)
 299         {
 300                 mi->the_status_changed_callback( mi, what_changed, mi->the_status_changed_signal_userdata );
 301         }
 302
 303         /* We could have lost connection again during signal handling... so before we return check again if we are connected */
 304         if(!mpd_check_connected(mi))
 305         {
 306                 return MPD_NOT_CONNECTED;
 307         }
 308         return MPD_OK;
 309 }
 310
 311 /* returns TRUE when status is availible, when not availible and connected it tries to grab it */
 312 int mpd_status_check(MpdObj *mi)
 313 {
 314         if(!mpd_check_connected(mi))
 315         {
 316                 debug_printf(DEBUG_INFO,"not connected\n");
 317                 return MPD_NOT_CONNECTED;
 318         }
 319         if(mi->status == NULL)
 320         {
 321                 /* try to update */
 322                 if(mpd_status_update(mi))
 323                 {
 324                         debug_printf(DEBUG_INFO, "failed to update status\n");
 325                         return MPD_STATUS_FAILED;
 326                 }
 327         }
 328         return MPD_OK;
 329 }
 330
 331
 332 int mpd_stats_get_total_songs(MpdObj *mi)
 333 {
 334         if(mi == NULL)
 335         {
 336                 debug_printf(DEBUG_ERROR, "failed to check mi == NULL\n");
 337                 return MPD_ARGS_ERROR;
 338         }
 339         if(mpd_stats_check(mi) != MPD_OK)
 340         {
 341                 debug_printf(DEBUG_ERROR,"Failed to get status\n");
 342                 return MPD_STATUS_FAILED;
 343         }
 344         return mi->stats->numberOfSongs;
 345 }
 346
 347 int mpd_stats_get_total_artists(MpdObj *mi)
 348 {
 349         if(mi == NULL)
 350         {
 351                 debug_printf(DEBUG_ERROR, "failed to check mi == NULL\n");
 352                 return MPD_ARGS_ERROR;
 353         }
 354         if(mpd_stats_check(mi) != MPD_OK)
 355         {
 356                 debug_printf(DEBUG_ERROR,"Failed to get status\n");
 357                 return MPD_STATS_FAILED;
 358         }
 359         return mi->stats->numberOfArtists;
 360 }
 361
 362 int mpd_stats_get_total_albums(MpdObj *mi)
 363 {
 364         if(mi == NULL)
 365         {
 366                 debug_printf(DEBUG_ERROR,"failed to check mi == NULL\n");
 367                 return MPD_ARGS_ERROR;
 368         }
 369         if(mpd_stats_check(mi) != MPD_OK)
 370         {
 371                 debug_printf(DEBUG_WARNING,"Failed to get status\n");
 372                 return MPD_STATS_FAILED;
 373         }
 374         return mi->stats->numberOfAlbums;
 375 }
 376
 377
 378 int mpd_stats_get_uptime(MpdObj *mi)
 379 {
 380         if(mi == NULL)
 381         {
 382                 debug_printf(DEBUG_ERROR,"failed to check mi == NULL\n");
 383                 return MPD_ARGS_ERROR;
 384         }
 385         if(mpd_stats_check(mi) != MPD_OK)
 386         {
 387                 debug_printf(DEBUG_WARNING,"Failed to get status\n");
 388                 return MPD_STATS_FAILED;
 389         }
 390         return mi->stats->uptime;
 391 }
 392
 393 int mpd_stats_get_playtime(MpdObj *mi)
 394 {
 395         if(mi == NULL)
 396         {
 397                 debug_printf(DEBUG_ERROR, "failed to check mi == NULL\n");
 398                 return MPD_ARGS_ERROR;
 399         }
 400         if(mpd_stats_check(mi) != MPD_OK)
 401         {
 402                 debug_printf(DEBUG_WARNING,"Failed to get status\n");
 403                 return MPD_STATS_FAILED;
 404         }
 405         return mi->stats->playTime;
 406 }
 407
 408 int mpd_stats_get_db_playtime(MpdObj *mi)
 409 {
 410         if(mi == NULL)
 411         {
 412                 debug_printf(DEBUG_ERROR, "failed to check mi == NULL\n");
 413                 return MPD_ARGS_ERROR;
 414         }
 415         if(mpd_stats_check(mi) != MPD_OK)
 416         {
 417                 debug_printf(DEBUG_WARNING,"Failed to get stats\n");
 418                 return MPD_STATS_FAILED;
 419         }
 420         return mi->stats->dbPlayTime;
 421 }
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439 int mpd_status_get_volume(MpdObj *mi)
 440 {
 441         if(mi == NULL)
 442         {
 443                 debug_printf(DEBUG_ERROR, "failed to check mi == NULL\n");
 444                 return MPD_ARGS_ERROR;
 445         }
 446         if(mpd_status_check(mi) != MPD_OK)
 447         {
 448                 debug_printf(DEBUG_WARNING, "Failed to get status\n");
 449                 return MPD_STATUS_FAILED;
 450         }
 451         return mi->status->volume;
 452 }
 453
 454
 455 int mpd_status_get_bitrate(MpdObj *mi)
 456 {
 457         if(mi == NULL)
 458         {
 459                 debug_printf(DEBUG_ERROR,"failed to check mi == NULL\n");
 460                 return MPD_ARGS_ERROR;
 461         }
 462         if(mpd_status_check(mi) != MPD_OK)
 463         {
 464                 debug_printf(DEBUG_WARNING, "Failed to get status\n");
 465                 return MPD_STATUS_FAILED;
 466         }
 467         return mi->CurrentState.bitrate;
 468 }
 469
 470 int mpd_status_get_channels(MpdObj *mi)
 471 {
 472         if(mi == NULL)
 473         {
 474                 debug_printf(DEBUG_ERROR,"failed to check mi == NULL\n");
 475                 return MPD_ARGS_ERROR;
 476         }
 477         if(mpd_status_check(mi) != MPD_OK)
 478         {
 479                 debug_printf(DEBUG_WARNING, "Failed to get status\n");
 480                 return MPD_STATUS_FAILED;
 481         }
 482         return mi->CurrentState.channels;
 483 }
 484
 485 unsigned int mpd_status_get_samplerate(MpdObj *mi)
 486 {
 487         if(mi == NULL)
 488         {
 489                 debug_printf(DEBUG_ERROR,"failed to check mi == NULL\n");
 490                 return MPD_ARGS_ERROR;
 491         }
 492         if(mpd_status_check(mi) != MPD_OK)
 493         {
 494                 debug_printf(DEBUG_WARNING, "Failed to get status\n");
 495                 return MPD_STATUS_FAILED;
 496         }
 497         return mi->CurrentState.samplerate;
 498 }
 499
 500 int mpd_status_get_bits(MpdObj *mi)
 501 {
 502         if(mi == NULL)
 503         {
 504                 debug_printf(DEBUG_WARNING,"failed to check mi == NULL\n");
 505                 return MPD_ARGS_ERROR;
 506         }
 507         if(mpd_status_check(mi) != MPD_OK)
 508         {
 509                 debug_printf(DEBUG_WARNING, "Failed to get status\n");
 510                 return MPD_STATUS_FAILED;
 511         }
 512         return mi->CurrentState.bits;
 513 }
 514
 515 char * mpd_status_get_mpd_error(MpdObj *mi)
 516 {
 517     if(mi->CurrentState.error[0] != '\0')
 518     {
 519         return strdup(mi->CurrentState.error);
 520     }
 521     return NULL;
 522 }
 523
 524 int mpd_status_db_is_updating(MpdObj *mi)
 525 {
 526         if(!mpd_check_connected(mi))
 527         {
 528                 debug_printf(DEBUG_WARNING, "mpd_check_connected failed.\n");
 529                 return FALSE;
 530         }
 531         return mi->CurrentState.updatingDb;
 532 }
 533
 534
 535 int mpd_status_get_total_song_time(MpdObj *mi)
 536 {
 537         if(!mpd_check_connected(mi))
 538         {
 539                 debug_printf(DEBUG_ERROR, "failed to check mi == NULL\n");
 540                 return MPD_ARGS_ERROR;
 541         }
 542         if(mpd_status_check(mi) != MPD_OK)
 543         {
 544                 debug_printf(DEBUG_WARNING, "Failed to get status\n");
 545                 return MPD_STATUS_FAILED;
 546         }
 547         return mi->status->totalTime;
 548 }
 549
 550
 551 int mpd_status_get_elapsed_song_time(MpdObj *mi)
 552 {
 553         if(!mpd_check_connected(mi))
 554         {
 555                 debug_printf(DEBUG_WARNING,"failed to check mi == NULL\n");
 556                 return MPD_NOT_CONNECTED;
 557         }
 558         if(mpd_status_check(mi) != MPD_OK)
 559         {
 560                 debug_printf(DEBUG_WARNING,"Failed to get status\n");
 561                 return MPD_STATUS_FAILED;
 562         }
 563         return mi->status->elapsedTime;
 564 }
 565
 566 int mpd_status_set_volume(MpdObj *mi,int volume)
 567 {
 568         if(!mpd_check_connected(mi))
 569         {
 570                 debug_printf(DEBUG_WARNING,"not connected\n");
 571                 return MPD_NOT_CONNECTED;
 572         }
 573         /* making sure volume is between 0 and 100 */
 574         volume = (volume < 0)? 0:(volume>100)? 100:volume;
 575
 576         if(mpd_lock_conn(mi))
 577         {
 578                 debug_printf(DEBUG_ERROR,"lock failed\n");
 579                 return MPD_LOCK_FAILED;
 580         }
 581
 582         /* send the command */
 583         mpd_sendSetvolCommand(mi->connection , volume);
 584         mpd_finishCommand(mi->connection);
 585         /* check for errors */
 586
 587         mpd_unlock_conn(mi);
 588         /* update status, because we changed it */
 589         mpd_status_queue_update(mi);
 590         /* return current volume */
 591         return mpd_status_get_volume(mi);
 592 }
 593
 594 int mpd_status_get_crossfade(MpdObj *mi)
 595 {
 596         if(!mpd_check_connected(mi))
 597         {
 598                 debug_printf(DEBUG_WARNING,"not connected\n");
 599                 return MPD_NOT_CONNECTED;
 600         }
 601         if(mpd_status_check(mi) != MPD_OK)
 602         {
 603                 debug_printf(DEBUG_WARNING,"Failed grabbing status\n");
 604                 return MPD_NOT_CONNECTED;
 605         }
 606         return mi->status->crossfade;
 607 }
 608
 609 int mpd_status_set_crossfade(MpdObj *mi,int crossfade_time)
 610 {
 611         if(!mpd_check_connected(mi))
 612         {
 613                 debug_printf(DEBUG_WARNING,"not connected\n");
 614                 return MPD_NOT_CONNECTED;
 615         }
 616         if(mpd_lock_conn(mi))
 617         {
 618                 debug_printf(DEBUG_ERROR,"lock failed\n");
 619                 return MPD_LOCK_FAILED;
 620         }
 621         mpd_sendCrossfadeCommand(mi->connection, crossfade_time);
 622         mpd_finishCommand(mi->connection);
 623
 624         mpd_unlock_conn(mi);
 625         mpd_status_queue_update(mi);
 626         return MPD_OK;
 627 }
 628
 629
 630 float mpd_status_set_volume_as_float(MpdObj *mi, float fvol)
 631 {
 632         int volume = mpd_status_set_volume(mi, (int)(fvol*100.0));
 633         if(volume > -1)
 634         {
 635                 return (float)volume/100.0;
 636         }
 637         return (float)volume;
 638 }
 639
 640 int mpd_stats_update(MpdObj *mi)
 641 {
 642         return mpd_stats_update_real(mi, NULL);
 643 }
 644
 645 int mpd_stats_update_real(MpdObj *mi, ChangedStatusType* what_changed)
 646 {
 647         ChangedStatusType what_changed_here = 0;
 648         if ( what_changed == NULL ) {
 649                 /* we need to save the current state, because we're called standalone */
 650                 memcpy(&(mi->OldState), &(mi->CurrentState), sizeof(MpdServerState));
 651         }
 652
 653         if(!mpd_check_connected(mi))
 654         {
 655                 debug_printf(DEBUG_INFO,"not connected\n");
 656                 return MPD_NOT_CONNECTED;
 657         }
 658         if(mpd_lock_conn(mi))
 659         {
 660                 debug_printf(DEBUG_ERROR,"lock failed\n");
 661                 return MPD_LOCK_FAILED;
 662         }
 663
 664         if(mi->stats != NULL)
 665         {
 666                 mpd_freeStats(mi->stats);
 667         }
 668         mpd_sendStatsCommand(mi->connection);
 669         mi->stats = mpd_getStats(mi->connection);
 670         if(mi->stats == NULL)
 671         {
 672                 debug_printf(DEBUG_ERROR,"Failed to grab stats from mpd\n");
 673         }
 674         else if(mi->stats->dbUpdateTime != mi->OldState.dbUpdateTime)
 675         {
 676                 debug_printf(DEBUG_INFO, "database updated\n");
 677                 what_changed_here |= MPD_CST_DATABASE;
 678
 679                 mi->CurrentState.dbUpdateTime = mi->stats->dbUpdateTime;
 680         }
 681
 682         if (what_changed) {
 683                 (*what_changed) |= what_changed_here;
 684         } else {
 685                 if((mi->the_status_changed_callback != NULL) & what_changed_here)
 686                 {
 687                         mi->the_status_changed_callback(mi, what_changed_here, mi->the_status_changed_signal_userdata);
 688                 }
 689         }
 690
 691         if(mpd_unlock_conn(mi))
 692         {
 693                 debug_printf(DEBUG_ERROR, "unlock failed");
 694                 return MPD_LOCK_FAILED;
 695         }
 696         return MPD_OK;
 697 }
 698
 699
 700 int mpd_stats_check(MpdObj *mi)
 701 {
 702         if(!mpd_check_connected(mi))
 703         {
 704                 debug_printf(DEBUG_WARNING,"not connected\n");
 705                 return MPD_NOT_CONNECTED;
 706         }
 707         if(mi->stats == NULL)
 708         {
 709                 /* try to update */
 710                 if(mpd_stats_update(mi))
 711                 {
 712                         debug_printf(DEBUG_ERROR,"failed to update status\n");
 713                         return MPD_STATUS_FAILED;
 714                 }
 715         }
 716         return MPD_OK;
 717 }