| 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 3 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, |
| 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 | * |
| 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/>. |
| 17 | */ |
| 18 | #include "disorder-server.h" |
| 19 | |
| 20 | /* the head of the queue is played next, so normally we add to the tail */ |
| 21 | struct queue_entry qhead = { &qhead, &qhead, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; |
| 22 | |
| 23 | /* the head of the recent list is the oldest thing, the tail the most recently |
| 24 | * played */ |
| 25 | struct queue_entry phead = { &phead, &phead, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; |
| 26 | |
| 27 | long pcount; |
| 28 | |
| 29 | void queue_fix_sofar(struct queue_entry *q) { |
| 30 | long sofar; |
| 31 | |
| 32 | /* Fake up SOFAR field for currently-playing tracks that don't have it filled |
| 33 | * in by the speaker process. XXX this horrible bodge should go away when we |
| 34 | * have a more general implementation of pausing as that field will always |
| 35 | * have to be right for the playing track. */ |
| 36 | if((q->state == playing_started |
| 37 | || q->state == playing_paused) |
| 38 | && q->type & DISORDER_PLAYER_PAUSES |
| 39 | && (q->type & DISORDER_PLAYER_TYPEMASK) != DISORDER_PLAYER_RAW) { |
| 40 | if(q->lastpaused) { |
| 41 | if(q->uptopause == -1) /* Don't know how far thru. */ |
| 42 | sofar = -1; |
| 43 | else if(q->lastresumed) /* Has been paused and resumed. */ |
| 44 | sofar = q->uptopause + time(0) - q->lastresumed; |
| 45 | else /* Currently paused. */ |
| 46 | sofar = q->uptopause; |
| 47 | } else /* Never been paused. */ |
| 48 | sofar = time(0) - q->played; |
| 49 | q->sofar = sofar; |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | static void queue_read_error(const char *msg, |
| 54 | void *u) { |
| 55 | fatal(0, "error parsing queue %s: %s", (const char *)u, msg); |
| 56 | } |
| 57 | |
| 58 | static void queue_do_read(struct queue_entry *head, const char *path) { |
| 59 | char *buffer; |
| 60 | FILE *fp; |
| 61 | struct queue_entry *q; |
| 62 | |
| 63 | if(!(fp = fopen(path, "r"))) { |
| 64 | if(errno == ENOENT) |
| 65 | return; /* no queue */ |
| 66 | fatal(errno, "error opening %s", path); |
| 67 | } |
| 68 | head->next = head->prev = head; |
| 69 | while(!inputline(path, fp, &buffer, '\n')) { |
| 70 | q = xmalloc(sizeof *q); |
| 71 | queue_unmarshall(q, buffer, queue_read_error, (void *)path); |
| 72 | if(head == &qhead |
| 73 | && (!q->track |
| 74 | || !q->when)) |
| 75 | fatal(0, "incomplete queue entry in %s", path); |
| 76 | queue_insert_entry(head->prev, q); |
| 77 | } |
| 78 | if(ferror(fp)) fatal(errno, "error reading %s", path); |
| 79 | fclose(fp); |
| 80 | } |
| 81 | |
| 82 | void queue_read(void) { |
| 83 | queue_do_read(&qhead, config_get_file("queue")); |
| 84 | } |
| 85 | |
| 86 | void recent_read(void) { |
| 87 | struct queue_entry *q; |
| 88 | |
| 89 | queue_do_read(&phead, config_get_file("recent")); |
| 90 | /* reset pcount after loading */ |
| 91 | pcount = 0; |
| 92 | q = phead.next; |
| 93 | while(q != &phead) { |
| 94 | ++pcount; |
| 95 | q = q->next; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | static void queue_do_write(const struct queue_entry *head, const char *path) { |
| 100 | char *tmp; |
| 101 | FILE *fp; |
| 102 | struct queue_entry *q; |
| 103 | |
| 104 | byte_xasprintf(&tmp, "%s.new", path); |
| 105 | if(!(fp = fopen(tmp, "w"))) fatal(errno, "error opening %s", tmp); |
| 106 | for(q = head->next; q != head; q = q->next) |
| 107 | if(fprintf(fp, "%s\n", queue_marshall(q)) < 0) |
| 108 | fatal(errno, "error writing %s", tmp); |
| 109 | if(fclose(fp) < 0) fatal(errno, "error closing %s", tmp); |
| 110 | if(rename(tmp, path) < 0) fatal(errno, "error replacing %s", path); |
| 111 | } |
| 112 | |
| 113 | void queue_write(void) { |
| 114 | queue_do_write(&qhead, config_get_file("queue")); |
| 115 | } |
| 116 | |
| 117 | void recent_write(void) { |
| 118 | queue_do_write(&phead, config_get_file("recent")); |
| 119 | } |
| 120 | |
| 121 | struct queue_entry *queue_find(const char *key) { |
| 122 | struct queue_entry *q; |
| 123 | |
| 124 | for(q = qhead.next; |
| 125 | q != &qhead && strcmp(q->track, key) && strcmp(q->id, key); |
| 126 | q = q->next) |
| 127 | ; |
| 128 | return q != &qhead ? q : 0; |
| 129 | } |
| 130 | |
| 131 | /* |
| 132 | Local Variables: |
| 133 | c-basic-offset:2 |
| 134 | comment-column:40 |
| 135 | fill-column:79 |
| 136 | indent-tabs-mode:nil |
| 137 | End: |
| 138 | */ |