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 3 of the License, or
8 * (at your option) any later version.
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.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 /** @file cgi/lookup.c
19 * @brief Server lookups
21 * To improve performance many server lookups are cached.
24 #include "disorder-cgi.h"
26 /** @brief Cached data */
27 static unsigned flags;
29 /** @brief Map of hashes to queud data */
30 static hash *queuemap;
32 struct queue_entry *dcgi_queue;
33 struct queue_entry *dcgi_playing;
34 struct queue_entry *dcgi_recent;
37 int dcgi_volume_right;
42 rights_type dcgi_rights;
45 int dcgi_random_enabled;
47 static void queuemap_add(struct queue_entry *q) {
49 queuemap = hash_new(sizeof (struct queue_entry *));
51 hash_add(queuemap, q->id, &q, HASH_INSERT_OR_REPLACE);
54 /** @brief Fetch cachable data */
55 void dcgi_lookup(unsigned want) {
56 unsigned need = want ^ (flags & want);
57 struct queue_entry *r, *rnext;
60 if(!dcgi_client || !need)
62 if(need & DCGI_QUEUE) {
63 disorder_queue(dcgi_client, &dcgi_queue);
64 queuemap_add(dcgi_queue);
66 if(need & DCGI_PLAYING) {
67 disorder_playing(dcgi_client, &dcgi_playing);
68 queuemap_add(dcgi_playing);
71 disorder_new_tracks(dcgi_client, &dcgi_new, &dcgi_nnew, 0);
72 if(need & DCGI_RECENT) {
73 /* we need to reverse the order of the list */
74 disorder_recent(dcgi_client, &r);
77 r->next = dcgi_recent;
81 queuemap_add(dcgi_recent);
83 if(need & DCGI_VOLUME)
84 disorder_get_volume(dcgi_client,
85 &dcgi_volume_left, &dcgi_volume_right);
86 if(need & DCGI_RIGHTS) {
87 dcgi_rights = RIGHT_READ; /* fail-safe */
88 if(!disorder_userinfo(dcgi_client, disorder_user(dcgi_client),
90 parse_rights(rs, &dcgi_rights, 1);
92 if(need & DCGI_ENABLED)
93 disorder_enabled(dcgi_client, &dcgi_enabled);
94 if(need & DCGI_RANDOM_ENABLED)
95 disorder_random_enabled(dcgi_client, &dcgi_random_enabled);
99 /** @brief Locate a track by ID */
100 struct queue_entry *dcgi_findtrack(const char *id) {
101 struct queue_entry **qq;
103 if(queuemap && (qq = hash_find(queuemap, id)))
105 dcgi_lookup(DCGI_PLAYING);
106 if(queuemap && (qq = hash_find(queuemap, id)))
108 dcgi_lookup(DCGI_QUEUE);
109 if(queuemap && (qq = hash_find(queuemap, id)))
111 dcgi_lookup(DCGI_RECENT);
112 if(queuemap && (qq = hash_find(queuemap, id)))
117 void dcgi_lookup_reset(void) {
118 /* Forget everything we knew */
128 dcgi_random_enabled = 0;
129 dcgi_volume_left = dcgi_volume_right = 0;