Add smart playlists, ratings and Qobuz

Fixes #259
Fixes #264

src/smartplaylists/playlistquerygenerator.h

@@ -0,0 +1,61 @@
+/*
+ * Strawberry Music Player
+ * This file was part of Clementine.
+ * Copyright 2010, David Sansome <me@davidsansome.com>
+ *
+ * Strawberry 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry 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 Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef PLAYLISTQUERYGENERATOR_H
+#define PLAYLISTQUERYGENERATOR_H
+
+#include "config.h"
+
+#include <QList>
+#include <QByteArray>
+#include <QString>
+
+#include "playlistgenerator.h"
+#include "smartplaylistsearch.h"
+
+class PlaylistQueryGenerator : public PlaylistGenerator {
+ public:
+  explicit PlaylistQueryGenerator();
+  explicit PlaylistQueryGenerator(const QString &name, const SmartPlaylistSearch &search, const bool dynamic = false);
+
+  Type type() const { return Type_Query; }
+
+  void Load(const SmartPlaylistSearch &search);
+  void Load(const QByteArray &data);
+  QByteArray Save() const;
+
+  PlaylistItemList Generate();
+  PlaylistItemList GenerateMore(const int count);
+  bool is_dynamic() const { return dynamic_; }
+  void set_dynamic(bool dynamic) { dynamic_ = dynamic; }
+
+  SmartPlaylistSearch search() const { return search_; }
+  int GetDynamicFuture() { return search_.limit_; }
+
+ private:
+  SmartPlaylistSearch search_;
+  bool dynamic_;
+
+  QList<int> previous_ids_;
+  int current_pos_;
+
+};
+
+#endif  // PLAYLISTQUERYGENERATOR_H