Code

93c034f5a1361926090224d3025a3dfaa0ef7d8b
[ncmpc.git] / src / playlist.h
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  */
22 #ifndef MPDCLIENT_PLAYLIST_H
23 #define MPDCLIENT_PLAYLIST_H
25 #include "libmpdclient.h"
27 #include <assert.h>
28 #include <glib.h>
30 struct mpdclient;
32 typedef struct mpdclient_playlist {
33         /* playlist id */
34         long long id;
36         /* true if the list is updated */
37         gboolean updated;
39         /* the list */
40         GPtrArray *list;
41 } mpdclient_playlist_t;
43 void
44 playlist_init(struct mpdclient_playlist *playlist);
46 /** remove and free all songs in the playlist */
47 void
48 playlist_clear(struct mpdclient_playlist *playlist);
50 /* free a playlist */
51 gint mpdclient_playlist_free(mpdclient_playlist_t *playlist);
53 static inline guint
54 playlist_length(const struct mpdclient_playlist *playlist)
55 {
56         assert(playlist != NULL);
57         assert(playlist->list != NULL);
59         return playlist->list->len;
60 }
62 static inline gboolean
63 playlist_is_empty(const struct mpdclient_playlist *playlist)
64 {
65         return playlist_length(playlist) == 0;
66 }
68 static inline struct mpd_song *
69 playlist_get(const struct mpdclient_playlist *playlist, guint idx)
70 {
71         assert(idx < playlist_length(playlist));
73         return g_ptr_array_index(playlist->list, idx);
74 }
76 static inline void
77 playlist_append(struct mpdclient_playlist *playlist, const mpd_Song *song)
78 {
79         g_ptr_array_add(playlist->list, mpd_songDup(song));
80 }
82 static inline void
83 playlist_set(const struct mpdclient_playlist *playlist, guint idx,
84              const mpd_Song *song)
85 {
86         assert(idx < playlist_length(playlist));
88         g_ptr_array_index(playlist->list, idx) = mpd_songDup(song);
89 }
91 static inline void
92 playlist_replace(struct mpdclient_playlist *playlist, guint idx,
93                  const mpd_Song *song)
94 {
95         mpd_freeSong(playlist_get(playlist, idx));
96         playlist_set(playlist, idx, song);
97 }
99 static inline struct mpd_song *
100 playlist_remove_reuse(struct mpdclient_playlist *playlist, guint idx)
102         return g_ptr_array_remove_index(playlist->list, idx);
105 static inline void
106 playlist_remove(struct mpdclient_playlist *playlist, guint idx)
108         mpd_freeSong(playlist_remove_reuse(playlist, idx));
111 static inline void
112 playlist_swap(struct mpdclient_playlist *playlist, guint idx1, guint idx2)
114         mpd_Song *song1 = playlist_get(playlist, idx1);
115         mpd_Song *song2 = playlist_get(playlist, idx2);
116         gint n;
118         /* update the songs position field */
119         n = song1->pos;
120         song1->pos = song2->pos;
121         song2->pos = n;
123         /* update the array */
124         g_ptr_array_index(playlist->list, idx1) = song2;
125         g_ptr_array_index(playlist->list, idx2) = song1;
128 struct mpd_song *playlist_lookup_song(struct mpdclient *c, gint id);
130 struct mpd_song *playlist_get_song(struct mpdclient *c, gint index);
132 gint playlist_get_index(struct mpdclient *c, struct mpd_song *song);
134 gint playlist_get_index_from_id(struct mpdclient *c, gint id);
136 gint playlist_get_index_from_file(struct mpdclient *c, gchar *filename);
138 #endif