2 * arch-tag: Implementation of random play order weighted by the time since last play
4 * Copyright (C) 2003 Jeffrey Yasskin <jyasskin@mail.utexas.edu>
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.
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.
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
22 #include "rb-play-order-random-by-age.h"
28 static void rb_random_play_order_by_age_class_init (RBRandomPlayOrderByAgeClass
*klass
);
30 static double rb_random_by_age_get_entry_weight (RBRandomPlayOrder
*rorder
,
31 RhythmDB
*db
, RhythmDBEntry
*entry
);
33 G_DEFINE_TYPE (RBRandomPlayOrderByAge
, rb_random_play_order_by_age
, RB_TYPE_RANDOM_PLAY_ORDER
)
36 rb_random_play_order_by_age_class_init (RBRandomPlayOrderByAgeClass
*klass
)
38 RBRandomPlayOrderClass
*rorder
;
40 rorder
= RB_RANDOM_PLAY_ORDER_CLASS (klass
);
41 rorder
->get_entry_weight
= rb_random_by_age_get_entry_weight
;
45 rb_random_play_order_by_age_new (RBShellPlayer
*player
)
47 RBRandomPlayOrderByAge
*rorder
;
49 rorder
= g_object_new (RB_TYPE_RANDOM_PLAY_ORDER_BY_AGE
,
53 return RB_PLAY_ORDER (rorder
);
57 rb_random_play_order_by_age_init (RBRandomPlayOrderByAge
*porder
)
62 rb_random_by_age_get_entry_weight (RBRandomPlayOrder
*rorder
, RhythmDB
*db
, RhythmDBEntry
*entry
)
66 gulong seconds_since_last_play
;
68 /* This returns the log of the number of seconds since the last play.
69 * It handles never played automatically, since now-0 is a valid
70 * argument to log(). */
73 last_play
= rhythmdb_entry_get_ulong (entry
, RHYTHMDB_PROP_LAST_PLAYED
);
74 seconds_since_last_play
= now
- last_play
;
75 /* The lowest weight should be 0. */
76 if (seconds_since_last_play
< 1)
77 seconds_since_last_play
= 1;
78 return log (seconds_since_last_play
);