2 * This file is part of DisOrder.
3 * Copyright (C) 2004-2008 Richard Kettlewell
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.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * 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
20 /** @file server/lookup.c
21 * @brief Server lookups
23 * To improve performance many server lookups are cached.
26 #include "disorder-cgi.h"
28 /** @brief Cached data */
29 static unsigned flags
;
31 /** @brief Map of hashes to queud data */
32 static hash
*queuemap
;
34 struct queue_entry
*dcgi_queue
;
35 struct queue_entry
*dcgi_playing
;
36 struct queue_entry
*dcgi_recent
;
39 int dcgi_volume_right
;
44 rights_type dcgi_rights
;
47 int dcgi_random_enabled
;
49 static void queuemap_add(struct queue_entry
*q
) {
51 queuemap
= hash_new(sizeof (struct queue_entry
*));
53 hash_add(queuemap
, q
->id
, &q
, HASH_INSERT_OR_REPLACE
);
56 /** @brief Fetch cachable data */
57 void dcgi_lookup(unsigned want
) {
58 unsigned need
= want
^ (flags
& want
);
59 struct queue_entry
*r
, *rnext
;
62 if(!dcgi_client
|| !need
)
64 if(need
& DCGI_QUEUE
) {
65 disorder_queue(dcgi_client
, &dcgi_queue
);
66 queuemap_add(dcgi_queue
);
68 if(need
& DCGI_PLAYING
) {
69 disorder_playing(dcgi_client
, &dcgi_playing
);
70 queuemap_add(dcgi_playing
);
73 disorder_new_tracks(dcgi_client
, &dcgi_new
, &dcgi_nnew
, 0);
74 if(need
& DCGI_RECENT
) {
75 /* we need to reverse the order of the list */
76 disorder_recent(dcgi_client
, &r
);
79 r
->next
= dcgi_recent
;
83 queuemap_add(dcgi_recent
);
85 if(need
& DCGI_VOLUME
)
86 disorder_get_volume(dcgi_client
,
87 &dcgi_volume_left
, &dcgi_volume_right
);
88 if(need
& DCGI_RIGHTS
) {
89 dcgi_rights
= RIGHT_READ
; /* fail-safe */
90 if(!disorder_userinfo(dcgi_client
, disorder_user(dcgi_client
),
92 parse_rights(rs
, &dcgi_rights
, 1);
94 if(need
& DCGI_ENABLED
)
95 disorder_enabled(dcgi_client
, &dcgi_enabled
);
96 if(need
& DCGI_RANDOM_ENABLED
)
97 disorder_random_enabled(dcgi_client
, &dcgi_random_enabled
);
101 /** @brief Locate a track by ID */
102 struct queue_entry
*dcgi_findtrack(const char *id
) {
103 struct queue_entry
**qq
;
105 if(queuemap
&& (qq
= hash_find(queuemap
, id
)))
107 dcgi_lookup(DCGI_PLAYING
);
108 if(queuemap
&& (qq
= hash_find(queuemap
, id
)))
110 dcgi_lookup(DCGI_QUEUE
);
111 if(queuemap
&& (qq
= hash_find(queuemap
, id
)))
113 dcgi_lookup(DCGI_RECENT
);
114 if(queuemap
&& (qq
= hash_find(queuemap
, id
)))
119 void dcgi_lookup_reset(void) {
120 /* Forget everything we knew */
130 dcgi_random_enabled
= 0;
131 dcgi_volume_left
= dcgi_volume_right
= 0;