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 server/queue-ops.c
19 * @brief Track queues (server-specific code)
21 #include "disorder-server.h"
23 static int find_in_list(struct queue_entry *needle,
24 int nqs, struct queue_entry **qs) {
27 for(n = 0; n < nqs; ++n)
33 static int id_in_use(const char *id) {
34 struct queue_entry *q;
36 for(q = qhead.next; q != &qhead; q = q->next)
37 if(!strcmp(id, q->id))
42 static void queue_id(struct queue_entry *q) {
51 struct queue_entry *queue_add(const char *track, const char *submitter,
52 int where, enum track_origin origin) {
53 struct queue_entry *q, *beforeme;
55 q = xmalloc(sizeof *q);
56 q->track = xstrdup(track);
57 q->submitter = submitter ? xstrdup(submitter) : 0;
58 q->state = playing_unplayed;
64 queue_insert_entry(&qhead, q);
67 queue_insert_entry(qhead.prev, q);
69 case WHERE_BEFORE_RANDOM:
70 /* We want to find the point in the queue before the block of random tracks
73 while(beforeme->prev != &qhead
74 && beforeme->prev->origin == origin_random)
75 beforeme = beforeme->prev;
76 queue_insert_entry(beforeme->prev, q);
79 /* submitter will be a null pointer for a scratch */
81 notify_queue(track, submitter);
82 eventlog_raw("queue", queue_marshall(q), (const char *)0);
86 int queue_move(struct queue_entry *q, int delta, const char *who) {
90 /* not the most efficient approach but hopefuly relatively comprehensible:
91 * the idea is that for each step we determine which nodes are affected, and
92 * fill in all the links starting at the 'prev' end and moving towards the
95 while(delta > 0 && q->prev != &qhead) {
96 struct queue_entry *n, *p, *pp;
111 while(delta < 0 && q->next != &qhead) {
112 struct queue_entry *n, *p, *nn;
128 info("user %s moved %s", who, q->id);
129 notify_queue_move(q->track, who);
130 sprintf(buffer, "%d", moved);
131 eventlog("moved", who, (char *)0);
137 void queue_moveafter(struct queue_entry *target,
138 int nqs, struct queue_entry **qs,
140 struct queue_entry *q;
147 while(find_in_list(target, nqs, qs))
148 target = target->prev;
150 for(n = 0; n < nqs; ++n) {
152 queue_delete_entry(q);
153 queue_insert_entry(target, q);
155 /* Log the individual tracks */
156 info("user %s moved %s", who, q->id);
157 notify_queue_move(q->track, who);
159 /* Report that the queue changed to the event log */
160 eventlog("moved", who, (char *)0);
163 void queue_remove(struct queue_entry *which, const char *who) {
165 info("user %s removed %s", who, which->id);
166 notify_queue_move(which->track, who);
168 eventlog("removed", which->id, who, (const char *)0);
169 queue_delete_entry(which);
172 void queue_played(struct queue_entry *q) {
173 while(pcount && pcount >= config->history) {
174 eventlog("recent_removed", phead.next->id, (char *)0);
175 queue_delete_entry(phead.next);
178 if(config->history) {
179 eventlog_raw("recent_added", queue_marshall(q), (char *)0);
180 queue_insert_entry(phead.prev, q);