src/playlist.h

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2010 The Music Player Daemon Project
   3  * Project homepage: http://musicpd.org
   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 #ifndef MPDCLIENT_PLAYLIST_H
  21 #define MPDCLIENT_PLAYLIST_H
  22
  23 #include <mpd/client.h>
  24
  25 #include <assert.h>
  26 #include <glib.h>
  27
  28 struct mpdclient_playlist {
  29         /* queue version number (obtained from mpd_status) */
  30         unsigned version;
  31
  32         /* the list */
  33         GPtrArray *list;
  34 };
  35
  36 void
  37 playlist_init(struct mpdclient_playlist *playlist);
  38
  39 /** remove and free all songs in the playlist */
  40 void
  41 playlist_clear(struct mpdclient_playlist *playlist);
  42
  43 /* free a playlist */
  44 gint
  45 mpdclient_playlist_free(struct mpdclient_playlist *playlist);
  46
  47 static inline guint
  48 playlist_length(const struct mpdclient_playlist *playlist)
  49 {
  50         assert(playlist != NULL);
  51         assert(playlist->list != NULL);
  52
  53         return playlist->list->len;
  54 }
  55
  56 static inline gboolean
  57 playlist_is_empty(const struct mpdclient_playlist *playlist)
  58 {
  59         return playlist_length(playlist) == 0;
  60 }
  61
  62 static inline struct mpd_song *
  63 playlist_get(const struct mpdclient_playlist *playlist, guint idx)
  64 {
  65         assert(idx < playlist_length(playlist));
  66
  67         return g_ptr_array_index(playlist->list, idx);
  68 }
  69
  70 static inline void
  71 playlist_append(struct mpdclient_playlist *playlist, const struct mpd_song *song)
  72 {
  73         g_ptr_array_add(playlist->list, mpd_song_dup(song));
  74 }
  75
  76 static inline void
  77 playlist_set(const struct mpdclient_playlist *playlist, guint idx,
  78              const struct mpd_song *song)
  79 {
  80         assert(idx < playlist_length(playlist));
  81
  82         g_ptr_array_index(playlist->list, idx) = mpd_song_dup(song);
  83 }
  84
  85 static inline void
  86 playlist_replace(struct mpdclient_playlist *playlist, guint idx,
  87                  const struct mpd_song *song)
  88 {
  89         mpd_song_free(playlist_get(playlist, idx));
  90         playlist_set(playlist, idx, song);
  91 }
  92
  93 static inline struct mpd_song *
  94 playlist_remove_reuse(struct mpdclient_playlist *playlist, guint idx)
  95 {
  96         return g_ptr_array_remove_index(playlist->list, idx);
  97 }
  98
  99 static inline void
 100 playlist_remove(struct mpdclient_playlist *playlist, guint idx)
 101 {
 102         mpd_song_free(playlist_remove_reuse(playlist, idx));
 103 }
 104
 105 void
 106 playlist_move(struct mpdclient_playlist *playlist,
 107               unsigned dest, unsigned src);
 108
 109 const struct mpd_song *
 110 playlist_lookup_song(const struct mpdclient_playlist *playlist, unsigned id);
 111
 112 const struct mpd_song *
 113 playlist_get_song(const struct mpdclient_playlist *playlist, gint index);
 114
 115 gint
 116 playlist_get_index(const struct mpdclient_playlist *playlist,
 117                    const struct mpd_song *song);
 118
 119 gint
 120 playlist_get_index_from_id(const struct mpdclient_playlist *playlist,
 121                            unsigned id);
 122
 123 gint
 124 playlist_get_index_from_file(const struct mpdclient_playlist *playlist,
 125                              const gchar *filename);
 126
 127 static inline gint
 128 playlist_get_index_from_same_song(const struct mpdclient_playlist *playlist,
 129                                   const struct mpd_song *song)
 130 {
 131         return playlist_get_index_from_file(playlist, mpd_song_get_uri(song));
 132 }
 133
 134 gint
 135 playlist_get_id_from_uri(const struct mpdclient_playlist *playlist,
 136                          const gchar *uri);
 137
 138 static inline gint
 139 playlist_get_id_from_same_song(const struct mpdclient_playlist *playlist,
 140                                const struct mpd_song *song)
 141 {
 142         return playlist_get_id_from_uri(playlist, mpd_song_get_uri(song));
 143 }
 144
 145 #endif