MT32: Update Munt to 2.0.1-pre

This update uses upstream commit
f88ef828a600ce66d1f730c8fb2a7f580f6f6165.

This update switches to use the new Munt C++ interface, which
will allow ScummVM to link to an external Munt library instead
of requiring it to be built-in in the future. For the moment,
the emulator is still built-in, since it is not available from
most package repositories.

The Munt driver in ScummVM now uses writeSysex instead of the
(now-private) playSysexWithoutFraming, per recommendation from
the Munt team <https://github.com/munt/munt/pull/30>.

This changeset also removes direct modifications that used to be
made to Munt code, to ease future updates. To update Munt code in
the future:

1. Replace all source files in the `softsynth/mt32` directory with
   new files from the upstream `mt32emu/src` directory;
2. Update `config.h` with the correct version number for the new
   version of Munt;
3. Update `module.mk` to add any new source files that need to be
   built.

1 files changed, 73 insertions, 0 deletions

diff --git a/audio/softsynth/mt32/File.h b/audio/softsynth/mt32/File.h
new file mode 100755
index 0000000000..c9a7d582b4
--- /dev/null
+++ b/audio/softsynth/mt32/File.h
@@ -0,0 +1,73 @@
+/* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009 Dean Beeler, Jerome Fisher
+ * Copyright (C) 2011-2016 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