src/mpdclient.c

   1 /*
   2  * $Id$
   3  *
   4  * (c) 2004 by Kalle Wallin <kaw@linux.se>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  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  USA
  18  *
  19  */
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24 #include <time.h>
  25 #include <string.h>
  26 #include <glib.h>
  27
  28 #include "config.h"
  29 #include "ncmpc.h"
  30 #include "support.h"
  31 #include "mpdclient.h"
  32 #include "options.h"
  33
  34 #undef  ENABLE_FANCY_PLAYLIST_MANAGMENT_CMD_ADD /* broken with song id's */
  35 #define ENABLE_FANCY_PLAYLIST_MANAGMENT_CMD_DELETE
  36 #define ENABLE_FANCY_PLAYLIST_MANAGMENT_CMD_MOVE
  37 #define ENABLE_SONG_ID
  38 #undef  ENABLE_PLCHANGES /* something is broken */
  39
  40 #define MPD_ERROR(c) (c==NULL || c->connection==NULL || c->connection->error)
  41
  42
  43 /* Error callbacks */
  44 static gint
  45 error_cb(mpdclient_t *c, gint error, gchar *msg)
  46 {
  47   GList *list = c->error_callbacks;
  48
  49   if( list==NULL )
  50     fprintf(stderr, "error [%d]: %s\n", (error & 0xFF), msg);
  51
  52   while(list)
  53     {
  54       mpdc_error_cb_t cb = list->data;
  55       if( cb )
  56         cb(c, error, msg);
  57       list=list->next;
  58     }
  59   mpd_clearError(c->connection);
  60   return error;
  61 }
  62
  63 #ifdef DEBUG
  64 #include "strfsong.h"
  65
  66 static gchar *
  67 get_song_name(mpd_Song *song)
  68 {
  69   static gchar name[256];
  70
  71   strfsong(name, 256, "[%artist% - ]%title%|%file%", song);
  72   return name;
  73 }
  74
  75 #endif
  76
  77 /****************************************************************************/
  78 /*** mpdclient functions ****************************************************/
  79 /****************************************************************************/
  80
  81 gint
  82 mpdclient_finish_command(mpdclient_t *c)
  83 {
  84   mpd_finishCommand(c->connection);
  85
  86   if( c->connection->error )
  87     {
  88       gchar *msg = locale_to_utf8(c->connection->errorStr);
  89       gint error = c->connection->error;
  90
  91       if( error == MPD_ERROR_ACK )
  92         error = error | (c->connection->errorCode << 8);
  93
  94       error_cb(c, error, msg);
  95       g_free(msg);
  96       return error;
  97     }
  98
  99   return 0;
 100 }
 101
 102 mpdclient_t *
 103 mpdclient_new(void)
 104 {
 105   mpdclient_t *c;
 106
 107   c = g_malloc0(sizeof(mpdclient_t));
 108
 109   return c;
 110 }
 111
 112 mpdclient_t *
 113 mpdclient_free(mpdclient_t *c)
 114 {
 115   mpdclient_disconnect(c);
 116   g_list_free(c->error_callbacks);
 117   g_list_free(c->playlist_callbacks);
 118   g_list_free(c->browse_callbacks);
 119   g_free(c);
 120
 121   return NULL;
 122 }
 123
 124 gint
 125 mpdclient_disconnect(mpdclient_t *c)
 126 {
 127   if( c->connection )
 128     mpd_closeConnection(c->connection);
 129   c->connection = NULL;
 130
 131   if( c->status )
 132     mpd_freeStatus(c->status);
 133   c->status = NULL;
 134
 135   if( c->playlist.list )
 136     mpdclient_playlist_free(&c->playlist);
 137
 138   if( c->song )
 139     c->song = NULL;
 140
 141   return 0;
 142 }
 143
 144 gint
 145 mpdclient_connect(mpdclient_t *c,
 146                   gchar *host,
 147                   gint port,
 148                   gfloat timeout,
 149                   gchar *password)
 150 {
 151   gint retval = 0;
 152
 153   /* close any open connection */
 154   if( c->connection )
 155     mpdclient_disconnect(c);
 156
 157   /* connect to MPD */
 158   c->connection = mpd_newConnection(host, port, timeout);
 159   if( c->connection->error )
 160     return error_cb(c, c->connection->error, c->connection->errorStr);
 161
 162   /* send password */
 163   if( password )
 164     {
 165       mpd_sendPasswordCommand(c->connection, password);
 166       retval = mpdclient_finish_command(c);
 167     }
 168   c->need_update = TRUE;
 169
 170   return retval;
 171 }
 172
 173 gint
 174 mpdclient_update(mpdclient_t *c)
 175 {
 176   gint retval = 0;
 177
 178   if( MPD_ERROR(c) )
 179     return -1;
 180
 181   /* free the old status */
 182   if( c->status )
 183     mpd_freeStatus(c->status);
 184
 185   /* retreive new status */
 186   mpd_sendStatusCommand(c->connection);
 187   c->status = mpd_getStatus(c->connection);
 188   if( (retval=mpdclient_finish_command(c)) )
 189     return retval;
 190 #ifdef DEBUG
 191   if( c->status->error )
 192     D("status> %s\n", c->status->error);
 193 #endif
 194
 195   /* check if the playlist needs an update */
 196   if( c->playlist.id != c->status->playlist )
 197     {
 198       if( c->playlist.list )
 199         retval = mpdclient_playlist_update_changes(c);
 200       else
 201         retval = mpdclient_playlist_update(c);
 202     }
 203
 204   /* update the current song */
 205   if( !c->song || c->status->songid != c->song->id )
 206     {
 207       c->song = playlist_get_song(c, c->status->song);
 208     }
 209
 210   c->need_update = FALSE;
 211
 212   return retval;
 213 }
 214
 215
 216 /****************************************************************************/
 217 /*** MPD Commands  **********************************************************/
 218 /****************************************************************************/
 219
 220 gint
 221 mpdclient_cmd_play(mpdclient_t *c, gint index)
 222 {
 223 #ifdef ENABLE_SONG_ID
 224   mpd_Song *song = playlist_get_song(c, index);
 225
 226   D("Play id:%d\n", song ? song->id : -1);
 227   if( song )
 228     mpd_sendPlayIdCommand(c->connection, song->id);
 229   else
 230     mpd_sendPlayIdCommand(c->connection, MPD_PLAY_AT_BEGINNING);
 231 #else
 232   mpd_sendPlayCommand(c->connection, index);
 233 #endif
 234   c->need_update = TRUE;
 235   return mpdclient_finish_command(c);
 236 }
 237
 238 gint
 239 mpdclient_cmd_pause(mpdclient_t *c, gint value)
 240 {
 241   mpd_sendPauseCommand(c->connection, value);
 242   return mpdclient_finish_command(c);
 243 }
 244
 245 gint
 246 mpdclient_cmd_stop(mpdclient_t *c)
 247 {
 248   mpd_sendStopCommand(c->connection);
 249   return mpdclient_finish_command(c);
 250 }
 251
 252 gint
 253 mpdclient_cmd_next(mpdclient_t *c)
 254 {
 255   mpd_sendNextCommand(c->connection);
 256   c->need_update = TRUE;
 257   return mpdclient_finish_command(c);
 258 }
 259
 260 gint
 261 mpdclient_cmd_prev(mpdclient_t *c)
 262 {
 263   mpd_sendPrevCommand(c->connection);
 264   c->need_update = TRUE;
 265   return mpdclient_finish_command(c);
 266 }
 267
 268 gint
 269 mpdclient_cmd_seek(mpdclient_t *c, gint id, gint pos)
 270 {
 271   D("Seek id:%d\n", id);
 272   mpd_sendSeekIdCommand(c->connection, id, pos);
 273   return mpdclient_finish_command(c);
 274 }
 275
 276 gint
 277 mpdclient_cmd_shuffle(mpdclient_t *c)
 278 {
 279   mpd_sendShuffleCommand(c->connection);
 280   c->need_update = TRUE;
 281   return mpdclient_finish_command(c);
 282 }
 283
 284 gint
 285 mpdclient_cmd_clear(mpdclient_t *c)
 286 {
 287   gint retval = 0;
 288
 289   mpd_sendClearCommand(c->connection);
 290   retval = mpdclient_finish_command(c);
 291   /* call playlist updated callback */
 292   mpdclient_playlist_callback(c, PLAYLIST_EVENT_CLEAR, NULL);
 293   c->need_update = TRUE;
 294   return retval;
 295 }
 296
 297 gint
 298 mpdclient_cmd_repeat(mpdclient_t *c, gint value)
 299 {
 300   mpd_sendRepeatCommand(c->connection, value);
 301   return mpdclient_finish_command(c);
 302 }
 303
 304 gint
 305 mpdclient_cmd_random(mpdclient_t *c, gint value)
 306 {
 307   mpd_sendRandomCommand(c->connection, value);
 308   return mpdclient_finish_command(c);
 309 }
 310
 311 gint
 312 mpdclient_cmd_crossfade(mpdclient_t *c, gint value)
 313 {
 314   mpd_sendCrossfadeCommand(c->connection, value);
 315   return mpdclient_finish_command(c);
 316 }
 317
 318 gint
 319 mpdclient_cmd_db_update(mpdclient_t *c)
 320 {
 321   mpd_sendUpdateCommand(c->connection);
 322   return mpdclient_finish_command(c);
 323 }
 324
 325 gint
 326 mpdclient_cmd_volume(mpdclient_t *c, gint value)
 327 {
 328   mpd_sendSetvolCommand(c->connection, value);
 329   return mpdclient_finish_command(c);
 330 }
 331
 332 gint
 333 mpdclient_cmd_add(mpdclient_t *c, mpd_Song *song)
 334 {
 335   gint retval = 0;
 336
 337   if( !song || !song->file )
 338     return -1;
 339
 340   /* send the add command to mpd */
 341   mpd_sendAddCommand(c->connection, song->file);
 342   if( (retval=mpdclient_finish_command(c)) )
 343     return retval;
 344
 345 #ifdef ENABLE_FANCY_PLAYLIST_MANAGMENT_CMD_ADD
 346   /* add the song to playlist */
 347   c->playlist.list = g_list_append(c->playlist.list, mpd_songDup(song));
 348   c->playlist.length++;
 349
 350   /* increment the playlist id, so we dont retrives a new playlist */
 351   c->playlist.id++;
 352
 353   /* call playlist updated callback */
 354   mpdclient_playlist_callback(c, PLAYLIST_EVENT_ADD, (gpointer) song);
 355 #else
 356   c->need_update = TRUE;
 357 #endif
 358
 359   return 0;
 360 }
 361
 362 gint
 363 mpdclient_cmd_delete(mpdclient_t *c, gint index)
 364 {
 365   gint retval = 0;
 366   mpd_Song *song = playlist_get_song(c, index);
 367
 368   if( !song )
 369     return -1;
 370
 371   /* send the delete command to mpd */
 372 #ifdef ENABLE_SONG_ID
 373   D("Delete id:%d\n", song->id);
 374   mpd_sendDeleteIdCommand(c->connection, song->id);
 375 #else
 376   mpd_sendDeleteCommand(c->connection, index);
 377 #endif
 378   if( (retval=mpdclient_finish_command(c)) )
 379     return retval;
 380
 381 #ifdef ENABLE_FANCY_PLAYLIST_MANAGMENT_CMD_DELETE
 382   /* increment the playlist id, so we dont retrive a new playlist */
 383   c->playlist.id++;
 384
 385   /* remove the song from the playlist */
 386   c->playlist.list = g_list_remove(c->playlist.list, (gpointer) song);
 387   c->playlist.length = g_list_length(c->playlist.list);
 388
 389   /* call playlist updated callback */
 390   mpdclient_playlist_callback(c, PLAYLIST_EVENT_DELETE, (gpointer) song);
 391
 392   /* remove references to the song */
 393   if( c->song == song )
 394     {
 395       c->song = NULL;
 396       c->need_update = TRUE;
 397     }
 398
 399   /* free song */
 400   mpd_freeSong(song);
 401
 402 #else
 403   c->need_update = TRUE;
 404 #endif
 405
 406   return 0;
 407 }
 408
 409 gint
 410 mpdclient_cmd_move(mpdclient_t *c, gint old_index, gint new_index)
 411 {
 412   gint n, index1, index2;
 413   GList *item1, *item2;
 414   gpointer data1, data2;
 415   mpd_Song *song1, *song2;
 416
 417   if( old_index==new_index || new_index<0 || new_index>=c->playlist.length )
 418     return -1;
 419
 420   song1 = playlist_get_song(c, old_index);
 421   song2 = playlist_get_song(c, new_index);
 422
 423   /* send the move command to mpd */
 424 #ifdef ENABLE_SONG_ID
 425   D("Swaping id:%d with id:%d\n", song1->id, song2->id);
 426   mpd_sendSwapIdCommand(c->connection, song1->id, song2->id);
 427 #else
 428   D("Moving index %d to id:%d\n", old_index, new_index);
 429   mpd_sendMoveCommand(c->connection, old_index, new_index);
 430 #endif
 431   if( (n=mpdclient_finish_command(c)) )
 432     return n;
 433
 434 #ifdef ENABLE_FANCY_PLAYLIST_MANAGMENT_CMD_MOVE
 435   /* update the songs position field */
 436   n = song1->pos;
 437   song1->pos = song2->pos;
 438   song2->pos = n;
 439   index1 = MIN(old_index, new_index);
 440   index2 = MAX(old_index, new_index);
 441   /* retreive the list items */
 442   item1 = g_list_nth(c->playlist.list, index1);
 443   item2 = g_list_nth(c->playlist.list, index2);
 444   /* retrieve the songs */
 445   data1 = item1->data;
 446   data2 = item2->data;
 447
 448   /* move the second item */
 449   c->playlist.list = g_list_remove(c->playlist.list, data2);
 450   c->playlist.list = g_list_insert_before(c->playlist.list, item1, data2);
 451
 452   /* move the first item */
 453   if( index2-index1 >1 )
 454     {
 455       item2 = g_list_nth(c->playlist.list, index2);
 456       c->playlist.list = g_list_remove(c->playlist.list, data1);
 457       c->playlist.list = g_list_insert_before(c->playlist.list, item2, data1);
 458     }
 459
 460   /* increment the playlist id, so we dont retrives a new playlist */
 461   c->playlist.id++;
 462
 463 #else
 464   c->need_update = TRUE;
 465 #endif
 466
 467   /* call playlist updated callback */
 468   mpdclient_playlist_callback(c, PLAYLIST_EVENT_MOVE, (gpointer) &new_index);
 469
 470   return 0;
 471 }
 472
 473 gint
 474 mpdclient_cmd_save_playlist(mpdclient_t *c, gchar *filename)
 475 {
 476   gint retval = 0;
 477   gchar *filename_utf8 = locale_to_utf8(filename);
 478
 479   mpd_sendSaveCommand(c->connection, filename_utf8);
 480   if( (retval=mpdclient_finish_command(c)) == 0 )
 481     mpdclient_browse_callback(c, BROWSE_PLAYLIST_SAVED, NULL);
 482   g_free(filename_utf8);
 483   return retval;
 484 }
 485
 486 gint
 487 mpdclient_cmd_load_playlist(mpdclient_t *c, gchar *filename_utf8)
 488 {
 489   mpd_sendLoadCommand(c->connection, filename_utf8);
 490   c->need_update = TRUE;
 491   return mpdclient_finish_command(c);
 492 }
 493
 494 gint
 495 mpdclient_cmd_delete_playlist(mpdclient_t *c, gchar *filename_utf8)
 496 {
 497   gint retval = 0;
 498
 499   mpd_sendRmCommand(c->connection, filename_utf8);
 500   if( (retval=mpdclient_finish_command(c)) == 0 )
 501     mpdclient_browse_callback(c, BROWSE_PLAYLIST_DELETED, NULL);
 502   return retval;
 503 }
 504
 505
 506 /****************************************************************************/
 507 /*** Callback managment functions *******************************************/
 508 /****************************************************************************/
 509 static void
 510 do_list_callbacks(mpdclient_t *c, GList *list, gint event, gpointer data)
 511 {
 512   while(list)
 513     {
 514       mpdc_list_cb_t fn = list->data;
 515
 516       fn(c, event, data);
 517       list=list->next;
 518     }
 519 }
 520
 521 void
 522 mpdclient_playlist_callback(mpdclient_t *c, int event, gpointer data)
 523 {
 524   do_list_callbacks(c, c->playlist_callbacks, event, data);
 525 }
 526
 527 void
 528 mpdclient_install_playlist_callback(mpdclient_t *c,mpdc_list_cb_t cb)
 529 {
 530   c->playlist_callbacks = g_list_append(c->playlist_callbacks, cb);
 531 }
 532
 533 void
 534 mpdclient_remove_playlist_callback(mpdclient_t *c, mpdc_list_cb_t cb)
 535 {
 536   c->playlist_callbacks = g_list_remove(c->playlist_callbacks, cb);
 537 }
 538
 539 void
 540 mpdclient_browse_callback(mpdclient_t *c, int event, gpointer data)
 541 {
 542   do_list_callbacks(c, c->browse_callbacks, event, data);
 543 }
 544
 545
 546 void
 547 mpdclient_install_browse_callback(mpdclient_t *c,mpdc_list_cb_t cb)
 548 {
 549   c->browse_callbacks = g_list_append(c->browse_callbacks, cb);
 550 }
 551
 552 void
 553 mpdclient_remove_browse_callback(mpdclient_t *c, mpdc_list_cb_t cb)
 554 {
 555   c->browse_callbacks = g_list_remove(c->browse_callbacks, cb);
 556 }
 557
 558 void
 559 mpdclient_install_error_callback(mpdclient_t *c, mpdc_error_cb_t cb)
 560 {
 561   c->error_callbacks = g_list_append(c->error_callbacks, cb);
 562 }
 563
 564 void
 565 mpdclient_remove_error_callback(mpdclient_t *c, mpdc_error_cb_t cb)
 566 {
 567   c->error_callbacks = g_list_remove(c->error_callbacks, cb);
 568 }
 569
 570 /****************************************************************************/
 571 /*** Playlist managment functions *******************************************/
 572 /****************************************************************************/
 573
 574 gint
 575 mpdclient_playlist_free(mpdclient_playlist_t *playlist)
 576 {
 577   GList *list = g_list_first(playlist->list);
 578
 579   while(list)
 580     {
 581       mpd_Song *song = (mpd_Song *) list->data;
 582       mpd_freeSong(song);
 583       list=list->next;
 584     }
 585   g_list_free(playlist->list);
 586   memset(playlist, 0, sizeof(mpdclient_playlist_t));
 587   return 0;
 588 }
 589
 590 /* update playlist */
 591 gint
 592 mpdclient_playlist_update(mpdclient_t *c)
 593 {
 594   mpd_InfoEntity *entity;
 595
 596   D("mpdclient_playlist_update() [%lld]\n", c->status->playlist);
 597
 598   if( MPD_ERROR(c) )
 599     return -1;
 600
 601   if( c->playlist.list )
 602     mpdclient_playlist_free(&c->playlist);
 603
 604   mpd_sendPlaylistInfoCommand(c->connection,-1);
 605   while( (entity=mpd_getNextInfoEntity(c->connection)) )
 606     {
 607       if(entity->type==MPD_INFO_ENTITY_TYPE_SONG)
 608         {
 609           mpd_Song *song = mpd_songDup(entity->info.song);
 610
 611           c->playlist.list = g_list_append(c->playlist.list, (gpointer) song);
 612           c->playlist.length++;
 613         }
 614       mpd_freeInfoEntity(entity);
 615     }
 616   c->playlist.id = c->status->playlist;
 617   c->song = NULL;
 618   c->playlist.updated = TRUE;
 619
 620   /* call playlist updated callbacks */
 621   mpdclient_playlist_callback(c, PLAYLIST_EVENT_UPDATED, NULL);
 622
 623   return mpdclient_finish_command(c);
 624 }
 625
 626 #ifdef ENABLE_PLCHANGES
 627 static gint
 628 compare_songs(gconstpointer a, gconstpointer b)
 629 {
 630   mpd_Song *song1 = (mpd_Song *) a;
 631   mpd_Song *song2 = (mpd_Song *) b;
 632
 633   return song1->pos - song2->pos;
 634 }
 635
 636 /* update playlist (plchanges) */
 637
 638 gint
 639 mpdclient_playlist_update_changes(mpdclient_t *c)
 640 {
 641   mpd_InfoEntity *entity;
 642
 643   D("mpdclient_playlist_update_changes() [%lld -> %lld]\n",
 644     c->status->playlist, c->playlist.id);
 645
 646   if( MPD_ERROR(c) )
 647     return -1;
 648
 649   mpd_sendPlChangesCommand(c->connection, c->playlist.id);
 650
 651   while( (entity=mpd_getNextInfoEntity(c->connection)) != NULL   )
 652     {
 653       if(entity->type==MPD_INFO_ENTITY_TYPE_SONG)
 654         {
 655           mpd_Song *song;
 656           GList *item;
 657
 658           if( (song=mpd_songDup(entity->info.song)) == NULL )
 659             {
 660               D("song==NULL => calling mpdclient_playlist_update()\n");
 661               return mpdclient_playlist_update(c);
 662             }
 663
 664           item =  playlist_lookup(c, song->id);
 665
 666           if( item && item->data)
 667             {
 668               GList *old;
 669               gint index = g_list_position(c->playlist.list, item);
 670
 671               /* remove previous song at song->pos */
 672               if( song->pos != index &&
 673                   (old=g_list_nth(c->playlist.list, song->pos)) )
 674                 {
 675                   D("Removing item with index %d [%p]\n", index, old);
 676                   mpd_freeSong((mpd_Song *) old->data);
 677                   old->data = NULL;
 678                   c->playlist.list = g_list_delete_link(c->playlist.list, old);
 679                 }
 680
 681               /* Update playlist entry */
 682               mpd_freeSong((mpd_Song *) item->data);
 683               item->data = song;
 684               if( c->song && c->song->id == song->id )
 685                 c->song = song;
 686
 687               D("Changing index:%d, pos:%d, id:%d => %s\n",
 688                 index, song->pos, song->id, get_song_name(song));
 689             }
 690           else
 691             {
 692               /* Add a new  playlist entry */
 693               D("Adding pos:%d, id;%d - %s\n",
 694                 song->pos, song->id, get_song_name(song));
 695               c->playlist.list = g_list_append(c->playlist.list,
 696                                           (gpointer) song);
 697               c->playlist.length++;
 698             }
 699         }
 700       mpd_freeInfoEntity(entity);
 701     }
 702   mpd_finishCommand(c->connection);
 703
 704   while( g_list_length(c->playlist.list) > c->status->playlistLength )
 705     {
 706       GList *item = g_list_last(c->playlist.list);
 707
 708       /* Remove the last playlist entry */
 709       mpd_freeSong((mpd_Song *) item->data);
 710       c->playlist.list = g_list_delete_link(c->playlist.list, item);
 711       c->playlist.length--;
 712       D("Removed the last playlist entry\n");
 713     }
 714
 715   c->playlist.id = c->status->playlist;
 716   c->playlist.updated = TRUE;
 717
 718   mpdclient_playlist_callback(c, PLAYLIST_EVENT_UPDATED, NULL);
 719
 720   return 0;
 721 }
 722 #else
 723 gint
 724 mpdclient_playlist_update_changes(mpdclient_t *c)
 725 {
 726   return mpdclient_playlist_update(c);
 727 }
 728 #endif
 729
 730 mpd_Song *
 731 playlist_get_song(mpdclient_t *c, gint index)
 732 {
 733   return (mpd_Song *) g_list_nth_data(c->playlist.list, index);
 734 }
 735
 736 GList *
 737 playlist_lookup(mpdclient_t *c, gint id)
 738 {
 739   GList *list = c->playlist.list;
 740
 741   while( list )
 742     {
 743       mpd_Song *song = (mpd_Song *) list->data;
 744       if( (gint) song->id == id )
 745         return list;
 746       list=list->next;
 747     }
 748   return NULL;
 749 }
 750
 751 mpd_Song *
 752 playlist_lookup_song(mpdclient_t *c, gint id)
 753 {
 754   GList *list = c->playlist.list;
 755
 756   while( list )
 757     {
 758       mpd_Song *song = (mpd_Song *) list->data;
 759       if( song->id == id )
 760         return song;
 761       list=list->next;
 762     }
 763   return NULL;
 764 }
 765
 766 gint
 767 playlist_get_index(mpdclient_t *c, mpd_Song *song)
 768 {
 769   return g_list_index(c->playlist.list, song);
 770 }
 771
 772 gint
 773 playlist_get_index_from_id(mpdclient_t *c, gint id)
 774 {
 775   return g_list_index(c->playlist.list, playlist_lookup_song(c, id));
 776 }
 777
 778 gint
 779 playlist_get_index_from_file(mpdclient_t *c, gchar *filename)
 780 {
 781   GList *list = c->playlist.list;
 782   gint i=0;
 783
 784   while( list )
 785     {
 786       mpd_Song *song = (mpd_Song *) list->data;
 787       if( strcmp(song->file, filename ) == 0 )
 788         return i;
 789       list=list->next;
 790       i++;
 791     }
 792   return -1;
 793 }
 794
 795
 796 /****************************************************************************/
 797 /*** Filelist functions *****************************************************/
 798 /****************************************************************************/
 799
 800 mpdclient_filelist_t *
 801 mpdclient_filelist_free(mpdclient_filelist_t *filelist)
 802 {
 803   GList *list = g_list_first(filelist->list);
 804
 805   D("mpdclient_filelist_free()\n");
 806   while( list!=NULL )
 807     {
 808       filelist_entry_t *entry = list->data;
 809
 810       if( entry->entity )
 811         mpd_freeInfoEntity(entry->entity);
 812       g_free(entry);
 813       list=list->next;
 814     }
 815   g_list_free(filelist->list);
 816   g_free(filelist->path);
 817   filelist->path = NULL;
 818   filelist->list = NULL;
 819   filelist->length = 0;
 820   g_free(filelist);
 821
 822   return NULL;
 823 }
 824
 825
 826 mpdclient_filelist_t *
 827 mpdclient_filelist_get(mpdclient_t *c, gchar *path)
 828 {
 829   mpdclient_filelist_t *filelist;
 830   mpd_InfoEntity *entity;
 831   gchar *path_utf8 = locale_to_utf8(path);
 832
 833   D("mpdclient_filelist_get(%s)\n", path);
 834   mpd_sendLsInfoCommand(c->connection, path_utf8);
 835   filelist = g_malloc0(sizeof(mpdclient_filelist_t));
 836   if( path && path[0] && strcmp(path, "/") )
 837     {
 838       /* add a dummy entry for ./.. */
 839       filelist_entry_t *entry = g_malloc0(sizeof(filelist_entry_t));
 840       entry->entity = NULL;
 841       filelist->list = g_list_append(filelist->list, (gpointer) entry);
 842       filelist->length++;
 843     }
 844
 845   while( (entity=mpd_getNextInfoEntity(c->connection)) )
 846     {
 847       filelist_entry_t *entry = g_malloc0(sizeof(filelist_entry_t));
 848
 849       entry->entity = entity;
 850       filelist->list = g_list_append(filelist->list, (gpointer) entry);
 851       filelist->length++;
 852     }
 853
 854   if( mpdclient_finish_command(c) )
 855     {
 856       g_free(path_utf8);
 857       return mpdclient_filelist_free(filelist);
 858     }
 859
 860   g_free(path_utf8);
 861   filelist->path = g_strdup(path);
 862   filelist->updated = TRUE;
 863
 864   return filelist;
 865 }
 866
 867 mpdclient_filelist_t *
 868 mpdclient_filelist_update(mpdclient_t *c, mpdclient_filelist_t *filelist)
 869 {
 870   if( filelist != NULL )
 871     {
 872       gchar *path = g_strdup(filelist->path);
 873
 874       filelist = mpdclient_filelist_free(filelist);
 875       filelist = mpdclient_filelist_get(c, path);
 876       g_free(path);
 877       return filelist;
 878     }
 879   return NULL;
 880 }
 881
 882 filelist_entry_t *
 883 mpdclient_filelist_find_song(mpdclient_filelist_t *fl, mpd_Song *song)
 884 {
 885   GList *list = g_list_first(fl->list);
 886
 887   while( list && song)
 888     {
 889       filelist_entry_t *entry = list->data;
 890       mpd_InfoEntity *entity  = entry->entity;
 891
 892       if( entity && entity->type==MPD_INFO_ENTITY_TYPE_SONG )
 893         {
 894           mpd_Song *song2 = entity->info.song;
 895
 896           if( strcmp(song->file, song2->file) == 0 )
 897             {
 898               return entry;
 899             }
 900         }
 901       list = list->next;
 902     }
 903   return NULL;
 904 }
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