src/playlist.c

   1 /*
   2  * $Id$
   3  *
   4  * (c) 2004 by Kalle Wallin <kaw@linux.se>
   5  * (c) 2008 Max Kellermann <max@duempel.org>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include "playlist.h"
  23 #include "mpdclient.h"
  24
  25 #include <string.h>
  26
  27 #define ENABLE_PLCHANGES
  28
  29 #define MPD_ERROR(c) (c==NULL || c->connection==NULL || c->connection->error)
  30
  31 void
  32 playlist_init(struct mpdclient_playlist *playlist)
  33 {
  34         playlist->id = 0;
  35         playlist->list = g_ptr_array_sized_new(1024);
  36 }
  37
  38 void
  39 playlist_clear(struct mpdclient_playlist *playlist)
  40 {
  41         guint i;
  42
  43         playlist->id = 0;
  44
  45         for (i = 0; i < playlist->list->len; ++i) {
  46                 struct mpd_song *song = playlist_get(playlist, i);
  47
  48                 mpd_freeSong(song);
  49         }
  50
  51         g_ptr_array_set_size(playlist->list, 0);
  52 }
  53
  54 gint
  55 mpdclient_playlist_free(mpdclient_playlist_t *playlist)
  56 {
  57         if (playlist->list != NULL) {
  58                 playlist_clear(playlist);
  59                 g_ptr_array_free(playlist->list, TRUE);
  60         }
  61
  62         memset(playlist, 0, sizeof(mpdclient_playlist_t));
  63         return 0;
  64 }
  65
  66 struct mpd_song *
  67 playlist_get_song(mpdclient_t *c, gint idx)
  68 {
  69         if (idx < 0 || (guint)idx >= c->playlist.list->len)
  70                 return NULL;
  71
  72         return playlist_get(&c->playlist, idx);
  73 }
  74
  75 struct mpd_song *
  76 playlist_lookup_song(mpdclient_t *c, gint id)
  77 {
  78         guint i;
  79
  80         for (i = 0; i < c->playlist.list->len; ++i) {
  81                 struct mpd_song *song = playlist_get(&c->playlist, i);
  82                 if (song->id == id)
  83                         return song;
  84         }
  85
  86         return NULL;
  87 }
  88
  89 gint
  90 playlist_get_index(mpdclient_t *c, struct mpd_song *song)
  91 {
  92         guint i;
  93
  94         for (i = 0; i < c->playlist.list->len; ++i) {
  95                 if (playlist_get(&c->playlist, i) == song)
  96                         return (gint)i;
  97         }
  98
  99         return -1;
 100 }
 101
 102 gint
 103 playlist_get_index_from_id(mpdclient_t *c, gint id)
 104 {
 105         guint i;
 106
 107         for (i = 0; i < c->playlist.list->len; ++i) {
 108                 struct mpd_song *song = playlist_get(&c->playlist, i);
 109                 if (song->id == id)
 110                         return (gint)i;
 111         }
 112
 113         return -1;
 114 }
 115
 116 gint
 117 playlist_get_index_from_file(mpdclient_t *c, gchar *filename)
 118 {
 119         guint i;
 120
 121         for (i = 0; i < c->playlist.list->len; ++i) {
 122                 struct mpd_song *song = playlist_get(&c->playlist, i);
 123                 if(strcmp(song->file, filename) == 0)
 124                         return (gint)i;
 125         }
 126
 127         return -1;
 128 }