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448d3570 RK |
1 | /* |
2 | * This file is part of DisOrder. | |
3 | * Copyright (C) 2004-2008 Richard Kettlewell | |
4 | * | |
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. | |
9 | * | |
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. | |
14 | * | |
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 | |
18 | * USA | |
19 | */ | |
1e97629d RK |
20 | /** @file server/lookup.c |
21 | * @brief Server lookups | |
448d3570 | 22 | * |
1e97629d | 23 | * To improve performance many server lookups are cached. |
448d3570 | 24 | */ |
1e97629d RK |
25 | |
26 | #include "disorder-cgi.h" | |
448d3570 RK |
27 | |
28 | /** @brief Cached data */ | |
29 | static unsigned flags; | |
30 | ||
a2c4ad5f RK |
31 | /** @brief Map of hashes to queud data */ |
32 | static hash *queuemap; | |
33 | ||
1e97629d RK |
34 | struct queue_entry *dcgi_queue; |
35 | struct queue_entry *dcgi_playing; | |
36 | struct queue_entry *dcgi_recent; | |
448d3570 | 37 | |
1e97629d RK |
38 | int dcgi_volume_left; |
39 | int dcgi_volume_right; | |
448d3570 | 40 | |
1e97629d RK |
41 | char **dcgi_new; |
42 | int dcgi_nnew; | |
448d3570 | 43 | |
1e97629d | 44 | rights_type dcgi_rights; |
448d3570 | 45 | |
1e97629d RK |
46 | int dcgi_enabled; |
47 | int dcgi_random_enabled; | |
448d3570 | 48 | |
a2c4ad5f RK |
49 | static void queuemap_add(struct queue_entry *q) { |
50 | if(!queuemap) | |
51 | queuemap = hash_new(sizeof (struct queue_entry *)); | |
52 | for(; q; q = q->next) | |
53 | hash_add(queuemap, q->id, &q, HASH_INSERT_OR_REPLACE); | |
54 | } | |
55 | ||
448d3570 | 56 | /** @brief Fetch cachable data */ |
1e97629d | 57 | void dcgi_lookup(unsigned want) { |
448d3570 RK |
58 | unsigned need = want ^ (flags & want); |
59 | struct queue_entry *r, *rnext; | |
1e97629d | 60 | char *rs; |
448d3570 | 61 | |
1e97629d | 62 | if(!dcgi_client || !need) |
448d3570 | 63 | return; |
a2c4ad5f | 64 | if(need & DCGI_QUEUE) { |
1e97629d | 65 | disorder_queue(dcgi_client, &dcgi_queue); |
a2c4ad5f RK |
66 | queuemap_add(dcgi_queue); |
67 | } | |
68 | if(need & DCGI_PLAYING) { | |
1e97629d | 69 | disorder_playing(dcgi_client, &dcgi_playing); |
a2c4ad5f RK |
70 | queuemap_add(dcgi_playing); |
71 | } | |
1e97629d RK |
72 | if(need & DCGI_NEW) |
73 | disorder_new_tracks(dcgi_client, &dcgi_new, &dcgi_nnew, 0); | |
74 | if(need & DCGI_RECENT) { | |
448d3570 | 75 | /* we need to reverse the order of the list */ |
1e97629d | 76 | disorder_recent(dcgi_client, &r); |
448d3570 RK |
77 | while(r) { |
78 | rnext = r->next; | |
1e97629d RK |
79 | r->next = dcgi_recent; |
80 | dcgi_recent = r; | |
448d3570 RK |
81 | r = rnext; |
82 | } | |
a2c4ad5f | 83 | queuemap_add(dcgi_recent); |
448d3570 | 84 | } |
1e97629d RK |
85 | if(need & DCGI_VOLUME) |
86 | disorder_get_volume(dcgi_client, | |
87 | &dcgi_volume_left, &dcgi_volume_right); | |
1e97629d RK |
88 | if(need & DCGI_RIGHTS) { |
89 | dcgi_rights = RIGHT_READ; /* fail-safe */ | |
90 | if(!disorder_userinfo(dcgi_client, disorder_user(dcgi_client), | |
91 | "rights", &rs)) | |
92 | parse_rights(rs, &dcgi_rights, 1); | |
448d3570 | 93 | } |
1e97629d RK |
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); | |
448d3570 RK |
98 | flags |= need; |
99 | } | |
100 | ||
a2c4ad5f RK |
101 | /** @brief Locate a track by ID */ |
102 | struct queue_entry *dcgi_findtrack(const char *id) { | |
30d85588 | 103 | struct queue_entry **qq; |
a2c4ad5f | 104 | |
30d85588 RK |
105 | if(queuemap && (qq = hash_find(queuemap, id))) |
106 | return *qq; | |
a2c4ad5f | 107 | dcgi_lookup(DCGI_PLAYING); |
30d85588 RK |
108 | if(queuemap && (qq = hash_find(queuemap, id))) |
109 | return *qq; | |
a2c4ad5f | 110 | dcgi_lookup(DCGI_QUEUE); |
30d85588 RK |
111 | if(queuemap && (qq = hash_find(queuemap, id))) |
112 | return *qq; | |
a2c4ad5f | 113 | dcgi_lookup(DCGI_RECENT); |
30d85588 RK |
114 | if(queuemap && (qq = hash_find(queuemap, id))) |
115 | return *qq; | |
a2c4ad5f RK |
116 | return NULL; |
117 | } | |
118 | ||
1e97629d | 119 | void dcgi_lookup_reset(void) { |
71634563 RK |
120 | /* Forget everything we knew */ |
121 | flags = 0; | |
a2c4ad5f | 122 | queuemap = 0; |
1e97629d RK |
123 | dcgi_recent = 0; |
124 | dcgi_queue = 0; | |
125 | dcgi_playing = 0; | |
126 | dcgi_rights = 0; | |
127 | dcgi_new = 0; | |
128 | dcgi_nnew = 0; | |
129 | dcgi_enabled = 0; | |
130 | dcgi_random_enabled = 0; | |
131 | dcgi_volume_left = dcgi_volume_right = 0; | |
71634563 RK |
132 | } |
133 | ||
134 | ||
448d3570 RK |
135 | /* |
136 | Local Variables: | |
137 | c-basic-offset:2 | |
138 | comment-column:40 | |
139 | fill-column:79 | |
140 | indent-tabs-mode:nil | |
141 | End: | |
142 | */ |