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play_queue.c

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+/*
+ * Copyright 2008-2013 Various Authors
+ * Copyright 2005-2006 Timo Hirvonen
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "play_queue.h"
+#include "editable.h"
+#include "track.h"
+#include "xmalloc.h"
+
+struct editable pq_editable;
+static struct editable_shared pq_editable_shared;
+
+static void pq_free_track(struct editable *e, struct list_head *item)
+{
+	struct simple_track *track = to_simple_track(item);
+
+	track_info_unref(track->info);
+	free(track);
+}
+
+void play_queue_init(void)
+{
+	editable_shared_init(&pq_editable_shared, pq_free_track);
+	editable_init(&pq_editable, &pq_editable_shared, 1);
+}
+
+void play_queue_append(struct track_info *ti, void *opaque)
+{
+	if (!ti)
+		return;
+
+	struct simple_track *t = simple_track_new(ti);
+	editable_add(&pq_editable, t);
+}
+
+void play_queue_prepend(struct track_info *ti, void *opaque)
+{
+	if (!ti)
+		return;
+
+	struct simple_track *t = simple_track_new(ti);
+	editable_add_before(&pq_editable, t);
+}
+
+struct track_info *play_queue_remove(void)
+{
+	struct track_info *info = NULL;
+
+	if (!list_empty(&pq_editable.head)) {
+		struct simple_track *t = to_simple_track(pq_editable.head.next);
+		info = t->info;
+		track_info_ref(info);
+		editable_remove_track(&pq_editable, t);
+	}
+
+	return info;
+}
+
+int play_queue_for_each(int (*cb)(void *data, struct track_info *ti),
+		void *data, void *opaque)
+{
+	struct simple_track *track;
+	int rc = 0;
+
+	list_for_each_entry(track, &pq_editable.head, node) {
+		rc = cb(data, track->info);
+		if (rc)
+			break;
+	}
+	return rc;
+}
+
+unsigned int play_queue_total_time(void)
+{
+	return pq_editable.total_time;
+}
+
+int queue_needs_redraw(void)
+{
+	return pq_editable.shared->win->changed;
+}
+
+void queue_post_update(void)
+{
+	pq_editable.shared->win->changed = 0;
+}