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audio/softsynth/mt32/File.h

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+/* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Dean Beeler, Jerome Fisher
+ * Copyright (C) 2011-2022 Dean Beeler, Jerome Fisher, Sergey V. Mikayev
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published by
+ *  the Free Software Foundation, either version 2.1 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 Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MT32EMU_FILE_H
+#define MT32EMU_FILE_H
+
+#include <cstddef>
+
+#include "globals.h"
+#include "Types.h"
+
+namespace MT32Emu {
+
+class MT32EMU_EXPORT File {
+public:
+	// Includes terminator char.
+	typedef char SHA1Digest[41];
+
+	virtual ~File() {}
+	virtual size_t getSize() = 0;
+	virtual const Bit8u *getData() = 0;
+	virtual const SHA1Digest &getSHA1() = 0;
+
+	virtual void close() = 0;
+};
+
+class MT32EMU_EXPORT AbstractFile : public File {
+public:
+	const SHA1Digest &getSHA1();
+
+protected:
+	AbstractFile();
+	AbstractFile(const SHA1Digest &sha1Digest);
+
+private:
+	bool sha1DigestCalculated;
+	SHA1Digest sha1Digest;
+
+	// Binary compatibility helper.
+	void *reserved;
+};
+
+class MT32EMU_EXPORT ArrayFile : public AbstractFile {
+public:
+	ArrayFile(const Bit8u *data, size_t size);
+	ArrayFile(const Bit8u *data, size_t size, const SHA1Digest &sha1Digest);
+
+	size_t getSize();
+	const Bit8u *getData();
+	void close() {}
+
+private:
+	const Bit8u *data;
+	size_t size;
+};
+
+} // namespace MT32Emu
+
+#endif // #ifndef MT32EMU_FILE_H