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+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_LIGHT_SONG_HXX
+#define MPD_LIGHT_SONG_HXX
+
+#include "Chrono.hxx"
+#include "Compiler.h"
+
+#include <string>
+
+#include <time.h>
+
+struct Tag;
+
+/**
+ * A reference to a song file. Unlike the other "Song" classes in the
+ * MPD code base, this one consists only of pointers. It is supposed
+ * to be as light as possible while still providing all the
+ * information MPD has about a song file. This class does not manage
+ * any memory, and the pointers become invalid quickly. Only to be
+ * used to pass around during well-defined situations.
+ */
+struct LightSong {
+ /**
+ * If this is not nullptr, then it denotes a prefix for the
+ * #uri. To build the full URI, join directory and uri with a
+ * slash.
+ */
+ const char *directory;
+
+ const char *uri;
+
+ /**
+ * The "real" URI, the one to be used for opening the
+ * resource. If this attribute is nullptr, then #uri (and
+ * #directory) shall be used.
+ *
+ * This attribute is used for songs from the database which
+ * have a relative URI.
+ */
+ const char *real_uri;
+
+ /**
+ * Must not be nullptr.
+ */
+ const Tag *tag;
+
+ time_t mtime;
+
+ /**
+ * Start of this sub-song within the file.
+ */
+ SongTime start_time;
+
+ /**
+ * End of this sub-song within the file.
+ * Unused if zero.
+ */
+ SongTime end_time;
+
+ gcc_pure
+ std::string GetURI() const {
+ if (directory == nullptr)
+ return std::string(uri);
+
+ std::string result(directory);
+ result.push_back('/');
+ result.append(uri);
+ return result;
+ }
+
+ gcc_pure
+ SignedSongTime GetDuration() const;
+};
+
+#endif