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;