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     if(mi->CurrentState.nextsongid != mi->status->nextsongid || mi->CurrentState.nextsongpos != mi->status->nextsong)
 155     {
 156                 what_changed |= MPD_CST_NEXTSONG;
 157                 /* save new songid */
 158                 mi->CurrentState.nextsongpos = mi->status->nextsong;
 159         mi->CurrentState.nextsongid = mi->status->nextsongid;
 160     }
 161
 162         if(mi->CurrentState.single != mi->status->single)
 163         {
 164                 what_changed |= MPD_CST_SINGLE_MODE;
 165                 mi->CurrentState.single = mi->status->single;
 166         }
 167         if(mi->CurrentState.consume != mi->status->consume)
 168         {
 169                 what_changed |= MPD_CST_CONSUME_MODE;
 170                 mi->CurrentState.consume = mi->status->consume;
 171         }
 172         if(mi->CurrentState.repeat != mi->status->repeat)
 173         {
 174                 what_changed |= MPD_CST_REPEAT;
 175                 mi->CurrentState.repeat = mi->status->repeat;
 176         }
 177         if(mi->CurrentState.random != mi->status->random)
 178         {
 179                 what_changed |= MPD_CST_RANDOM;
 180                 mi->CurrentState.random = mi->status->random;
 181         }
 182         if(mi->CurrentState.volume != mi->status->volume)
 183         {
 184                 what_changed |= MPD_CST_VOLUME;
 185                 mi->CurrentState.volume = mi->status->volume;
 186         }
 187         if(mi->CurrentState.xfade != mi->status->crossfade)
 188         {
 189                 what_changed |= MPD_CST_CROSSFADE;
 190                 mi->CurrentState.xfade = mi->status->crossfade;
 191         }
 192         if(mi->CurrentState.totaltime != mi->status->totalTime)
 193         {
 194                 what_changed |= MPD_CST_TOTAL_TIME;
 195                 mi->CurrentState.totaltime = mi->status->totalTime;
 196         }
 197         if(mi->CurrentState.elapsedtime != mi->status->elapsedTime)
 198         {
 199                 what_changed |= MPD_CST_ELAPSED_TIME;
 200                 mi->CurrentState.elapsedtime = mi->status->elapsedTime;
 201         }
 202
 203         /* Check if bitrate changed, happens with vbr encodings. */
 204         if(mi->CurrentState.bitrate != mi->status->bitRate)
 205         {
 206                 what_changed |= MPD_CST_BITRATE;
 207                 mi->CurrentState.bitrate = mi->status->bitRate;
 208         }
 209
 210         /* The following 3 probly only happen on a song change, or is it possible in one song/stream? */
 211         /* Check if the sample rate changed */
 212         if(mi->CurrentState.samplerate != mi->status->sampleRate)
 213         {
 214                 what_changed |= MPD_CST_AUDIOFORMAT;
 215                 mi->CurrentState.samplerate = mi->status->sampleRate;
 216         }
 217
 218         /* check if the sampling depth changed */
 219         if(mi->CurrentState.bits != mi->status->bits)
 220         {
 221                 what_changed |= MPD_CST_AUDIOFORMAT;
 222                 mi->CurrentState.bits = mi->status->bits;
 223         }
 224
 225         /* Check if the amount of audio channels changed */
 226         if(mi->CurrentState.channels != mi->status->channels)
 227         {
 228                 what_changed |= MPD_CST_AUDIOFORMAT;
 229                 mi->CurrentState.channels = mi->status->channels;
 230         }
 231
 232     if(mi->status->error)
 233     {
 234         what_changed |= MPD_CST_SERVER_ERROR;
 235         strcpy(mi->CurrentState.error,mi->status->error);
 236         mpd_sendClearErrorCommand(mi->connection);
 237         mpd_finishCommand(mi->connection);
 238     }
 239     else
 240     {
 241         mi->CurrentState.error[0] ='\0';
 242     }
 243
 244         /* Check if the updating changed,
 245          * If it stopped, also update the stats for the new db-time.
 246          */
 247         if(mi->CurrentState.updatingDb != mi->status->updatingDb )
 248         {
 249                 what_changed |= MPD_CST_UPDATING;
 250                 if(!mi->status->updatingDb)
 251                 {
 252                         mpd_stats_update_real(mi, &what_changed);
 253                 }
 254                 mi->CurrentState.updatingDb = mi->status->updatingDb;
 255         }
 256
 257
 258     mi->CurrentState.playlistLength = mi->status->playlistLength;
 259
 260
 261     /* Detect changed outputs */
 262     if(!mi->has_idle)
 263     {
 264         if(mi->num_outputs >0 )
 265         {
 266             mpd_OutputEntity *output = NULL;
 267             mpd_sendOutputsCommand(mi->connection);
 268             while (( output = mpd_getNextOutput(mi->connection)) != NULL)
 269             {
 270                 if(mi->num_outputs < output->id)
 271                 {
 272                     mi->num_outputs++;
 273                     mi->output_states = g_realloc(mi->output_states,mi->num_outputs*sizeof(int));
 274                     mi->output_states[mi->num_outputs] = output->enabled;
 275                     what_changed |= MPD_CST_OUTPUT;
 276                 }
 277                 if(mi->output_states[output->id] != output->enabled)
 278                 {
 279                     mi->output_states[output->id] = output->enabled;
 280                     what_changed |= MPD_CST_OUTPUT;
 281                 }
 282                 mpd_freeOutputElement(output);
 283             }
 284             mpd_finishCommand(mi->connection);
 285         }
 286         else
 287         {
 288             /* if no outputs, lets fetch them */
 289             mpd_server_update_outputs(mi);
 290             if(mi->num_outputs == 0)
 291             {
 292                 assert("No outputs defined? that cannot be\n");
 293             }
 294             what_changed |= MPD_CST_OUTPUT;
 295         }
 296     }else {
 297         char *name;
 298         int update_stats = 0;
 299         mpd_sendGetEventsCommand(mi->connection);
 300         while((name = mpd_getNextEvent(mi->connection))){
 301             if(strcmp(name, "output") == 0){
 302                 what_changed |= MPD_CST_OUTPUT;
 303             }else if (strcmp(name, "database") == 0) {
 304                 if((what_changed&MPD_CST_DATABASE) == 0)
 305                 {
 306                     update_stats = 1;
 307                 }
 308                 what_changed |= MPD_CST_DATABASE;
 309             }else if (strcmp(name, "stored_playlist")==0) {
 310                 what_changed |= MPD_CST_STORED_PLAYLIST;
 311             }else if (strcmp(name, "tag") == 0) {
 312                 what_changed |= MPD_CST_PLAYLIST;
 313             }else if (strcmp (name, "sticker") == 0) {
 314                 what_changed |= MPD_CST_STICKER;
 315             }
 316             free(name);
 317        }
 318        mpd_finishCommand(mi->connection);
 319        if(update_stats) {
 320            mpd_stats_update_real(mi, &what_changed);
 321        }
 322     }
 323
 324
 325         /* Run the callback */
 326         if((mi->the_status_changed_callback != NULL) && what_changed)
 327         {
 328                 mi->the_status_changed_callback( mi, what_changed, mi->the_status_changed_signal_userdata );
 329         }
 330
 331         /* We could have lost connection again during signal handling... so before we return check again if we are connected */
 332         if(!mpd_check_connected(mi))
 333         {
 334                 return MPD_NOT_CONNECTED;
 335         }
 336         return MPD_OK;
 337 }
 338
 339 /* returns TRUE when status is availible, when not availible and connected it tries to grab it */
 340 int mpd_status_check(MpdObj *mi)
 341 {
 342         if(!mpd_check_connected(mi))
 343         {
 344                 debug_printf(DEBUG_INFO,"not connected\n");
 345                 return MPD_NOT_CONNECTED;
 346         }
 347         if(mi->status == NULL)
 348         {
 349                 /* try to update */
 350                 if(mpd_status_update(mi))
 351                 {
 352                         debug_printf(DEBUG_INFO, "failed to update status\n");
 353                         return MPD_STATUS_FAILED;
 354                 }
 355         }
 356         return MPD_OK;
 357 }
 358
 359
 360 int mpd_stats_get_total_songs(MpdObj *mi)
 361 {
 362         if(mi == NULL)
 363         {
 364                 debug_printf(DEBUG_ERROR, "failed to check mi == NULL\n");
 365                 return MPD_ARGS_ERROR;
 366         }
 367         if(mpd_stats_check(mi) != MPD_OK)
 368         {
 369                 debug_printf(DEBUG_ERROR,"Failed to get status\n");
 370                 return MPD_STATUS_FAILED;
 371         }
 372         return mi->stats->numberOfSongs;
 373 }
 374
 375 int mpd_stats_get_total_artists(MpdObj *mi)
 376 {
 377         if(mi == NULL)
 378         {
 379                 debug_printf(DEBUG_ERROR, "failed to check mi == NULL\n");
 380                 return MPD_ARGS_ERROR;
 381         }
 382         if(mpd_stats_check(mi) != MPD_OK)
 383         {
 384                 debug_printf(DEBUG_ERROR,"Failed to get status\n");
 385                 return MPD_STATS_FAILED;
 386         }
 387         return mi->stats->numberOfArtists;
 388 }
 389
 390 int mpd_stats_get_total_albums(MpdObj *mi)
 391 {
 392         if(mi == NULL)
 393         {
 394                 debug_printf(DEBUG_ERROR,"failed to check mi == NULL\n");
 395                 return MPD_ARGS_ERROR;
 396         }
 397         if(mpd_stats_check(mi) != MPD_OK)
 398         {
 399                 debug_printf(DEBUG_WARNING,"Failed to get status\n");
 400                 return MPD_STATS_FAILED;
 401         }
 402         return mi->stats->numberOfAlbums;
 403 }
 404
 405
 406 int mpd_stats_get_uptime(MpdObj *mi)
 407 {
 408         if(mi == NULL)
 409         {
 410                 debug_printf(DEBUG_ERROR,"failed to check mi == NULL\n");
 411                 return MPD_ARGS_ERROR;
 412         }
 413         if(mpd_stats_check(mi) != MPD_OK)
 414         {
 415                 debug_printf(DEBUG_WARNING,"Failed to get status\n");
 416                 return MPD_STATS_FAILED;
 417         }
 418         return mi->stats->uptime;
 419 }
 420
 421 int mpd_stats_get_playtime(MpdObj *mi)
 422 {
 423         if(mi == NULL)
 424         {
 425                 debug_printf(DEBUG_ERROR, "failed to check mi == NULL\n");
 426                 return MPD_ARGS_ERROR;
 427         }
 428         if(mpd_stats_check(mi) != MPD_OK)
 429         {
 430                 debug_printf(DEBUG_WARNING,"Failed to get status\n");
 431                 return MPD_STATS_FAILED;
 432         }
 433         return mi->stats->playTime;
 434 }
 435
 436 int mpd_stats_get_db_playtime(MpdObj *mi)
 437 {
 438         if(mi == NULL)
 439         {
 440                 debug_printf(DEBUG_ERROR, "failed to check mi == NULL\n");
 441                 return MPD_ARGS_ERROR;
 442         }
 443         if(mpd_stats_check(mi) != MPD_OK)
 444         {
 445                 debug_printf(DEBUG_WARNING,"Failed to get stats\n");
 446                 return MPD_STATS_FAILED;
 447         }
 448         return mi->stats->dbPlayTime;
 449 }
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467 int mpd_status_get_volume(MpdObj *mi)
 468 {
 469         if(mi == NULL)
 470         {
 471                 debug_printf(DEBUG_ERROR, "failed to check mi == NULL\n");
 472                 return MPD_ARGS_ERROR;
 473         }
 474         if(mpd_status_check(mi) != MPD_OK)
 475         {
 476                 debug_printf(DEBUG_WARNING, "Failed to get status\n");
 477                 return MPD_STATUS_FAILED;
 478         }
 479         return mi->status->volume;
 480 }
 481
 482
 483 int mpd_status_get_bitrate(MpdObj *mi)
 484 {
 485         if(mi == NULL)
 486         {
 487                 debug_printf(DEBUG_ERROR,"failed to check mi == NULL\n");
 488                 return MPD_ARGS_ERROR;
 489         }
 490         if(mpd_status_check(mi) != MPD_OK)
 491         {
 492                 debug_printf(DEBUG_WARNING, "Failed to get status\n");
 493                 return MPD_STATUS_FAILED;
 494         }
 495         return mi->CurrentState.bitrate;
 496 }
 497
 498 int mpd_status_get_channels(MpdObj *mi)
 499 {
 500         if(mi == NULL)
 501         {
 502                 debug_printf(DEBUG_ERROR,"failed to check mi == NULL\n");
 503                 return MPD_ARGS_ERROR;
 504         }
 505         if(mpd_status_check(mi) != MPD_OK)
 506         {
 507                 debug_printf(DEBUG_WARNING, "Failed to get status\n");
 508                 return MPD_STATUS_FAILED;
 509         }
 510         return mi->CurrentState.channels;
 511 }
 512
 513 unsigned int mpd_status_get_samplerate(MpdObj *mi)
 514 {
 515         if(mi == NULL)
 516         {
 517                 debug_printf(DEBUG_ERROR,"failed to check mi == NULL\n");
 518                 return MPD_ARGS_ERROR;
 519         }
 520         if(mpd_status_check(mi) != MPD_OK)
 521         {
 522                 debug_printf(DEBUG_WARNING, "Failed to get status\n");
 523                 return MPD_STATUS_FAILED;
 524         }
 525         return mi->CurrentState.samplerate;
 526 }
 527
 528 int mpd_status_get_bits(MpdObj *mi)
 529 {
 530         if(mi == NULL)
 531         {
 532                 debug_printf(DEBUG_WARNING,"failed to check mi == NULL\n");
 533                 return MPD_ARGS_ERROR;
 534         }
 535         if(mpd_status_check(mi) != MPD_OK)
 536         {
 537                 debug_printf(DEBUG_WARNING, "Failed to get status\n");
 538                 return MPD_STATUS_FAILED;
 539         }
 540         return mi->CurrentState.bits;
 541 }
 542
 543 char * mpd_status_get_mpd_error(MpdObj *mi)
 544 {
 545     if(mi->CurrentState.error[0] != '\0')
 546     {
 547         return strdup(mi->CurrentState.error);
 548     }
 549     return NULL;
 550 }
 551
 552 int mpd_status_db_is_updating(MpdObj *mi)
 553 {
 554         if(!mpd_check_connected(mi))
 555         {
 556                 debug_printf(DEBUG_WARNING, "mpd_check_connected failed.\n");
 557                 return FALSE;
 558         }
 559         return mi->CurrentState.updatingDb;
 560 }
 561
 562
 563 int mpd_status_get_total_song_time(MpdObj *mi)
 564 {
 565         if(!mpd_check_connected(mi))
 566         {
 567                 debug_printf(DEBUG_ERROR, "failed to check mi == NULL\n");
 568                 return MPD_ARGS_ERROR;
 569         }
 570         if(mpd_status_check(mi) != MPD_OK)
 571         {
 572                 debug_printf(DEBUG_WARNING, "Failed to get status\n");
 573                 return MPD_STATUS_FAILED;
 574         }
 575         return mi->status->totalTime;
 576 }
 577
 578
 579 int mpd_status_get_elapsed_song_time(MpdObj *mi)
 580 {
 581         if(!mpd_check_connected(mi))
 582         {
 583                 debug_printf(DEBUG_WARNING,"failed to check mi == NULL\n");
 584                 return MPD_NOT_CONNECTED;
 585         }
 586         if(mpd_status_check(mi) != MPD_OK)
 587         {
 588                 debug_printf(DEBUG_WARNING,"Failed to get status\n");
 589                 return MPD_STATUS_FAILED;
 590         }
 591         return mi->status->elapsedTime;
 592 }
 593
 594 int mpd_status_set_volume(MpdObj *mi,int volume)
 595 {
 596         if(!mpd_check_connected(mi))
 597         {
 598                 debug_printf(DEBUG_WARNING,"not connected\n");
 599                 return MPD_NOT_CONNECTED;
 600         }
 601         /* making sure volume is between 0 and 100 */
 602         volume = (volume < 0)? 0:(volume>100)? 100:volume;
 603
 604         if(mpd_lock_conn(mi))
 605         {
 606                 debug_printf(DEBUG_ERROR,"lock failed\n");
 607                 return MPD_LOCK_FAILED;
 608         }
 609
 610         /* send the command */
 611         mpd_sendSetvolCommand(mi->connection , volume);
 612         mpd_finishCommand(mi->connection);
 613         /* check for errors */
 614
 615         mpd_unlock_conn(mi);
 616         /* update status, because we changed it */
 617         mpd_status_queue_update(mi);
 618         /* return current volume */
 619         return mpd_status_get_volume(mi);
 620 }
 621
 622 int mpd_status_get_crossfade(MpdObj *mi)
 623 {
 624         if(!mpd_check_connected(mi))
 625         {
 626                 debug_printf(DEBUG_WARNING,"not connected\n");
 627                 return MPD_NOT_CONNECTED;
 628         }
 629         if(mpd_status_check(mi) != MPD_OK)
 630         {
 631                 debug_printf(DEBUG_WARNING,"Failed grabbing status\n");
 632                 return MPD_NOT_CONNECTED;
 633         }
 634         return mi->status->crossfade;
 635 }
 636
 637 int mpd_status_set_crossfade(MpdObj *mi,int crossfade_time)
 638 {
 639         if(!mpd_check_connected(mi))
 640         {
 641                 debug_printf(DEBUG_WARNING,"not connected\n");
 642                 return MPD_NOT_CONNECTED;
 643         }
 644         if(mpd_lock_conn(mi))
 645         {
 646                 debug_printf(DEBUG_ERROR,"lock failed\n");
 647                 return MPD_LOCK_FAILED;
 648         }
 649         mpd_sendCrossfadeCommand(mi->connection, crossfade_time);
 650         mpd_finishCommand(mi->connection);
 651
 652         mpd_unlock_conn(mi);
 653         mpd_status_queue_update(mi);
 654         return MPD_OK;
 655 }
 656
 657
 658 float mpd_status_set_volume_as_float(MpdObj *mi, float fvol)
 659 {
 660         int volume = mpd_status_set_volume(mi, (int)(fvol*100.0));
 661         if(volume > -1)
 662         {
 663                 return (float)volume/100.0;
 664         }
 665         return (float)volume;
 666 }
 667
 668 int mpd_stats_update(MpdObj *mi)
 669 {
 670         return mpd_stats_update_real(mi, NULL);
 671 }
 672
 673 int mpd_stats_update_real(MpdObj *mi, ChangedStatusType* what_changed)
 674 {
 675         ChangedStatusType what_changed_here = 0;
 676         if ( what_changed == NULL ) {
 677                 /* we need to save the current state, because we're called standalone */
 678                 memcpy(&(mi->OldState), &(mi->CurrentState), sizeof(MpdServerState));
 679         }
 680
 681         if(!mpd_check_connected(mi))
 682         {
 683                 debug_printf(DEBUG_INFO,"not connected\n");
 684                 return MPD_NOT_CONNECTED;
 685         }
 686         if(mpd_lock_conn(mi))
 687         {
 688                 debug_printf(DEBUG_ERROR,"lock failed\n");
 689                 return MPD_LOCK_FAILED;
 690         }
 691
 692         if(mi->stats != NULL)
 693         {
 694                 mpd_freeStats(mi->stats);
 695         }
 696         mpd_sendStatsCommand(mi->connection);
 697         mi->stats = mpd_getStats(mi->connection);
 698         if(mi->stats == NULL)
 699         {
 700                 debug_printf(DEBUG_ERROR,"Failed to grab stats from mpd\n");
 701         }
 702         else if(mi->stats->dbUpdateTime != mi->OldState.dbUpdateTime)
 703         {
 704                 debug_printf(DEBUG_INFO, "database updated\n");
 705                 what_changed_here |= MPD_CST_DATABASE;
 706
 707                 mi->CurrentState.dbUpdateTime = mi->stats->dbUpdateTime;
 708         }
 709
 710         if (what_changed) {
 711                 (*what_changed) |= what_changed_here;
 712         } else {
 713                 if((mi->the_status_changed_callback != NULL) & what_changed_here)
 714                 {
 715                         mi->the_status_changed_callback(mi, what_changed_here, mi->the_status_changed_signal_userdata);
 716                 }
 717         }
 718
 719         if(mpd_unlock_conn(mi))
 720         {
 721                 debug_printf(DEBUG_ERROR, "unlock failed");
 722                 return MPD_LOCK_FAILED;
 723         }
 724         return MPD_OK;
 725 }
 726
 727
 728 int mpd_stats_check(MpdObj *mi)
 729 {
 730         if(!mpd_check_connected(mi))
 731         {
 732                 debug_printf(DEBUG_WARNING,"not connected\n");
 733                 return MPD_NOT_CONNECTED;
 734         }
 735         if(mi->stats == NULL)
 736         {
 737                 /* try to update */
 738                 if(mpd_stats_update(mi))
 739                 {
 740                         debug_printf(DEBUG_ERROR,"failed to update status\n");
 741                         return MPD_STATUS_FAILED;
 742                 }
 743         }
 744         return MPD_OK;
 745 }