| 1 | /* |
| 2 | * This file is part of DisOrder |
| 3 | * Copyright (C) 2006-2008 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 | */ |
| 20 | #include "disobedience.h" |
| 21 | #include "queue-generic.h" |
| 22 | |
| 23 | /** @brief The actual queue */ |
| 24 | static struct queue_entry *actual_queue; |
| 25 | static struct queue_entry *actual_playing_track; |
| 26 | |
| 27 | /** @brief The playing track */ |
| 28 | struct queue_entry *playing_track; |
| 29 | |
| 30 | /** @brief When we last got the playing track */ |
| 31 | time_t last_playing; |
| 32 | |
| 33 | static void queue_completed(void *v, |
| 34 | const char *error, |
| 35 | struct queue_entry *q); |
| 36 | static void playing_completed(void *v, |
| 37 | const char *error, |
| 38 | struct queue_entry *q); |
| 39 | |
| 40 | /** @brief Called when either the actual queue or the playing track change */ |
| 41 | static void queue_playing_changed(void) { |
| 42 | |
| 43 | /* Check that the playing track isn't in the queue. There's a race here due |
| 44 | * to the fact that we issue the two commands at slightly different times. |
| 45 | * If it goes wrong we re-issue and try again, so that we never offer up an |
| 46 | * inconsistent state. */ |
| 47 | if(actual_playing_track) { |
| 48 | struct queue_entry *q; |
| 49 | for(q = actual_queue; q; q = q->next) |
| 50 | if(!strcmp(q->id, actual_playing_track->id)) |
| 51 | break; |
| 52 | if(q) { |
| 53 | disorder_eclient_playing(client, playing_completed, 0); |
| 54 | disorder_eclient_queue(client, queue_completed, 0); |
| 55 | return; |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | struct queue_entry *q = xmalloc(sizeof *q); |
| 60 | if(actual_playing_track) { |
| 61 | *q = *actual_playing_track; |
| 62 | q->next = actual_queue; |
| 63 | playing_track = q; |
| 64 | } else { |
| 65 | playing_track = NULL; |
| 66 | q = actual_queue; |
| 67 | } |
| 68 | time(&last_playing); /* for column_length() */ |
| 69 | ql_new_queue(&ql_queue, q); |
| 70 | /* Tell anyone who cares */ |
| 71 | event_raise("queue-list-changed", q); |
| 72 | event_raise("playing-track-changed", q); |
| 73 | } |
| 74 | |
| 75 | /** @brief Update the queue itself */ |
| 76 | static void queue_completed(void attribute((unused)) *v, |
| 77 | const char *error, |
| 78 | struct queue_entry *q) { |
| 79 | if(error) { |
| 80 | popup_protocol_error(0, error); |
| 81 | return; |
| 82 | } |
| 83 | actual_queue = q; |
| 84 | queue_playing_changed(); |
| 85 | } |
| 86 | |
| 87 | /** @brief Update the playing track */ |
| 88 | static void playing_completed(void attribute((unused)) *v, |
| 89 | const char *error, |
| 90 | struct queue_entry *q) { |
| 91 | if(error) { |
| 92 | popup_protocol_error(0, error); |
| 93 | return; |
| 94 | } |
| 95 | actual_playing_track = q; |
| 96 | queue_playing_changed(); |
| 97 | } |
| 98 | |
| 99 | /** @brief Schedule an update to the queue |
| 100 | * |
| 101 | * Called whenever a track is added to it or removed from it. |
| 102 | */ |
| 103 | static void queue_changed(const char attribute((unused)) *event, |
| 104 | void attribute((unused)) *eventdata, |
| 105 | void attribute((unused)) *callbackdata) { |
| 106 | D(("queue_changed")); |
| 107 | gtk_label_set_text(GTK_LABEL(report_label), "updating queue"); |
| 108 | disorder_eclient_queue(client, queue_completed, 0); |
| 109 | } |
| 110 | |
| 111 | /** @brief Schedule an update to the playing track |
| 112 | * |
| 113 | * Called whenever it changes |
| 114 | */ |
| 115 | static void playing_changed(const char attribute((unused)) *event, |
| 116 | void attribute((unused)) *eventdata, |
| 117 | void attribute((unused)) *callbackdata) { |
| 118 | D(("playing_changed")); |
| 119 | gtk_label_set_text(GTK_LABEL(report_label), "updating playing track"); |
| 120 | disorder_eclient_playing(client, playing_completed, 0); |
| 121 | } |
| 122 | |
| 123 | /** @brief Called regularly |
| 124 | * |
| 125 | * Updates the played-so-far field |
| 126 | */ |
| 127 | static gboolean playing_periodic(gpointer attribute((unused)) data) { |
| 128 | /* If there's a track playing, update its row */ |
| 129 | if(playing_track) |
| 130 | ql_update_row(playing_track, 0); |
| 131 | return TRUE; |
| 132 | } |
| 133 | |
| 134 | /** @brief Called at startup */ |
| 135 | static void queue_init(void) { |
| 136 | /* Arrange a callback whenever the playing state changes */ |
| 137 | event_register("playing-changed", playing_changed, 0); |
| 138 | /* We reget both playing track and queue at pause/resume so that start times |
| 139 | * can be computed correctly */ |
| 140 | event_register("pause-changed", playing_changed, 0); |
| 141 | event_register("pause-changed", queue_changed, 0); |
| 142 | /* Reget the queue whenever it changes */ |
| 143 | event_register("queue-changed", queue_changed, 0); |
| 144 | /* ...and once a second anyway */ |
| 145 | g_timeout_add(1000/*ms*/, playing_periodic, 0); |
| 146 | } |
| 147 | |
| 148 | /** @brief Columns for the queue */ |
| 149 | static const struct queue_column queue_columns[] = { |
| 150 | { "When", column_when, 0, COL_RIGHT }, |
| 151 | { "Who", column_who, 0, 0 }, |
| 152 | { "Artist", column_namepart, "artist", COL_EXPAND|COL_ELLIPSIZE }, |
| 153 | { "Album", column_namepart, "album", COL_EXPAND|COL_ELLIPSIZE }, |
| 154 | { "Title", column_namepart, "title", COL_EXPAND|COL_ELLIPSIZE }, |
| 155 | { "Length", column_length, 0, COL_RIGHT } |
| 156 | }; |
| 157 | |
| 158 | /** @brief Pop-up menu for queue */ |
| 159 | static struct queue_menuitem queue_menuitems[] = { |
| 160 | { "Track properties", ql_properties_activate, ql_properties_sensitive, 0, 0 }, |
| 161 | { "Select all tracks", ql_selectall_activate, ql_selectall_sensitive, 0, 0 }, |
| 162 | { "Deselect all tracks", ql_selectnone_activate, ql_selectnone_sensitive, 0, 0 }, |
| 163 | { "Scratch playing track", ql_scratch_activate, ql_scratch_sensitive, 0, 0 }, |
| 164 | { "Remove track from queue", ql_remove_activate, ql_remove_sensitive, 0, 0 }, |
| 165 | }; |
| 166 | |
| 167 | struct queuelike ql_queue = { |
| 168 | .name = "queue", |
| 169 | .init = queue_init, |
| 170 | .columns = queue_columns, |
| 171 | .ncolumns = sizeof queue_columns / sizeof *queue_columns, |
| 172 | .menuitems = queue_menuitems, |
| 173 | .nmenuitems = sizeof queue_menuitems / sizeof *queue_menuitems |
| 174 | }; |
| 175 | |
| 176 | GtkWidget *queue_widget(void) { |
| 177 | return init_queuelike(&ql_queue); |
| 178 | } |
| 179 | |
| 180 | /** @brief Return nonzero if @p track is in the queue */ |
| 181 | int queued(const char *track) { |
| 182 | struct queue_entry *q; |
| 183 | |
| 184 | D(("queued %s", track)); |
| 185 | for(q = ql_queue.q; q; q = q->next) |
| 186 | if(!strcmp(q->track, track)) |
| 187 | return 1; |
| 188 | return 0; |
| 189 | } |
| 190 | |
| 191 | /* |
| 192 | Local Variables: |
| 193 | c-basic-offset:2 |
| 194 | comment-column:40 |
| 195 | fill-column:79 |
| 196 | indent-tabs-mode:nil |
| 197 | End: |
| 198 | */ |