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448d3570 RK |
1 | /* |
2 | * This file is part of DisOrder. | |
3 | * Copyright (C) 2004-2008 Richard Kettlewell | |
4 | * | |
e7eb3a27 | 5 | * This program is free software: you can redistribute it and/or modify |
448d3570 | 6 | * it under the terms of the GNU General Public License as published by |
e7eb3a27 | 7 | * the Free Software Foundation, either version 3 of the License, or |
448d3570 RK |
8 | * (at your option) any later version. |
9 | * | |
e7eb3a27 RK |
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. | |
14 | * | |
448d3570 | 15 | * You should have received a copy of the GNU General Public License |
e7eb3a27 | 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
448d3570 | 17 | */ |
59cf25c4 | 18 | /** @file cgi/lookup.c |
1e97629d | 19 | * @brief Server lookups |
448d3570 | 20 | * |
1e97629d | 21 | * To improve performance many server lookups are cached. |
448d3570 | 22 | */ |
1e97629d RK |
23 | |
24 | #include "disorder-cgi.h" | |
448d3570 RK |
25 | |
26 | /** @brief Cached data */ | |
27 | static unsigned flags; | |
28 | ||
a2c4ad5f RK |
29 | /** @brief Map of hashes to queud data */ |
30 | static hash *queuemap; | |
31 | ||
1e97629d RK |
32 | struct queue_entry *dcgi_queue; |
33 | struct queue_entry *dcgi_playing; | |
34 | struct queue_entry *dcgi_recent; | |
448d3570 | 35 | |
1e97629d RK |
36 | int dcgi_volume_left; |
37 | int dcgi_volume_right; | |
448d3570 | 38 | |
1e97629d RK |
39 | char **dcgi_new; |
40 | int dcgi_nnew; | |
448d3570 | 41 | |
1e97629d | 42 | rights_type dcgi_rights; |
448d3570 | 43 | |
1e97629d RK |
44 | int dcgi_enabled; |
45 | int dcgi_random_enabled; | |
448d3570 | 46 | |
a2c4ad5f RK |
47 | static void queuemap_add(struct queue_entry *q) { |
48 | if(!queuemap) | |
49 | queuemap = hash_new(sizeof (struct queue_entry *)); | |
50 | for(; q; q = q->next) | |
51 | hash_add(queuemap, q->id, &q, HASH_INSERT_OR_REPLACE); | |
52 | } | |
53 | ||
448d3570 | 54 | /** @brief Fetch cachable data */ |
1e97629d | 55 | void dcgi_lookup(unsigned want) { |
448d3570 RK |
56 | unsigned need = want ^ (flags & want); |
57 | struct queue_entry *r, *rnext; | |
1e97629d | 58 | char *rs; |
448d3570 | 59 | |
1e97629d | 60 | if(!dcgi_client || !need) |
448d3570 | 61 | return; |
a2c4ad5f | 62 | if(need & DCGI_QUEUE) { |
1e97629d | 63 | disorder_queue(dcgi_client, &dcgi_queue); |
a2c4ad5f RK |
64 | queuemap_add(dcgi_queue); |
65 | } | |
66 | if(need & DCGI_PLAYING) { | |
1e97629d | 67 | disorder_playing(dcgi_client, &dcgi_playing); |
a2c4ad5f RK |
68 | queuemap_add(dcgi_playing); |
69 | } | |
1e97629d RK |
70 | if(need & DCGI_NEW) |
71 | disorder_new_tracks(dcgi_client, &dcgi_new, &dcgi_nnew, 0); | |
72 | if(need & DCGI_RECENT) { | |
448d3570 | 73 | /* we need to reverse the order of the list */ |
1e97629d | 74 | disorder_recent(dcgi_client, &r); |
448d3570 RK |
75 | while(r) { |
76 | rnext = r->next; | |
1e97629d RK |
77 | r->next = dcgi_recent; |
78 | dcgi_recent = r; | |
448d3570 RK |
79 | r = rnext; |
80 | } | |
a2c4ad5f | 81 | queuemap_add(dcgi_recent); |
448d3570 | 82 | } |
1e97629d RK |
83 | if(need & DCGI_VOLUME) |
84 | disorder_get_volume(dcgi_client, | |
85 | &dcgi_volume_left, &dcgi_volume_right); | |
1e97629d RK |
86 | if(need & DCGI_RIGHTS) { |
87 | dcgi_rights = RIGHT_READ; /* fail-safe */ | |
88 | if(!disorder_userinfo(dcgi_client, disorder_user(dcgi_client), | |
89 | "rights", &rs)) | |
90 | parse_rights(rs, &dcgi_rights, 1); | |
448d3570 | 91 | } |
1e97629d RK |
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); | |
448d3570 RK |
96 | flags |= need; |
97 | } | |
98 | ||
a2c4ad5f RK |
99 | /** @brief Locate a track by ID */ |
100 | struct queue_entry *dcgi_findtrack(const char *id) { | |
30d85588 | 101 | struct queue_entry **qq; |
a2c4ad5f | 102 | |
30d85588 RK |
103 | if(queuemap && (qq = hash_find(queuemap, id))) |
104 | return *qq; | |
a2c4ad5f | 105 | dcgi_lookup(DCGI_PLAYING); |
30d85588 RK |
106 | if(queuemap && (qq = hash_find(queuemap, id))) |
107 | return *qq; | |
a2c4ad5f | 108 | dcgi_lookup(DCGI_QUEUE); |
30d85588 RK |
109 | if(queuemap && (qq = hash_find(queuemap, id))) |
110 | return *qq; | |
a2c4ad5f | 111 | dcgi_lookup(DCGI_RECENT); |
30d85588 RK |
112 | if(queuemap && (qq = hash_find(queuemap, id))) |
113 | return *qq; | |
a2c4ad5f RK |
114 | return NULL; |
115 | } | |
116 | ||
1e97629d | 117 | void dcgi_lookup_reset(void) { |
71634563 RK |
118 | /* Forget everything we knew */ |
119 | flags = 0; | |
a2c4ad5f | 120 | queuemap = 0; |
1e97629d RK |
121 | dcgi_recent = 0; |
122 | dcgi_queue = 0; | |
123 | dcgi_playing = 0; | |
124 | dcgi_rights = 0; | |
125 | dcgi_new = 0; | |
126 | dcgi_nnew = 0; | |
127 | dcgi_enabled = 0; | |
128 | dcgi_random_enabled = 0; | |
129 | dcgi_volume_left = dcgi_volume_right = 0; | |
71634563 RK |
130 | } |
131 | ||
132 | ||
448d3570 RK |
133 | /* |
134 | Local Variables: | |
135 | c-basic-offset:2 | |
136 | comment-column:40 | |
137 | fill-column:79 | |
138 | indent-tabs-mode:nil | |
139 | End: | |
140 | */ |