DecoderControl: move code/attributes to new class MixRampInfo

src/MixRampInfo.hxx

@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2003-2013 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_MIX_RAMP_INFO_HXX
+#define MPD_MIX_RAMP_INFO_HXX
+
+#include "check.h"
+#include "Compiler.h"
+
+#include <string>
+
+class MixRampInfo {
+	std::string start, end;
+
+public:
+	MixRampInfo() = default;
+
+	void Clear() {
+		start.clear();
+		end.clear();
+	}
+
+	gcc_pure
+	bool IsDefined() const {
+		return !start.empty() || !end.empty();
+	}
+
+	gcc_pure
+	const char *GetStart() const {
+		return start.empty() ? nullptr : start.c_str();
+	}
+
+	gcc_pure
+	const char *GetEnd() const {
+		return end.empty() ? nullptr : end.c_str();
+	}
+
+	void SetStart(const char *new_value) {
+		if (new_value == nullptr)
+			start.clear();
+		else
+			start = new_value;
+	}
+
+	void SetStart(std::string &&new_value) {
+		start = std::move(new_value);
+	}
+
+	void SetEnd(const char *new_value) {
+		if (new_value == nullptr)
+			end.clear();
+		else
+			end = new_value;
+	}
+
+	void SetEnd(std::string &&new_value) {
+		end = std::move(new_value);
+	}
+};
+
+#endif