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, 119 insertions, 0 deletions

diff --git a/audio/softsynth/mt32/globals.h b/audio/softsynth/mt32/globals.h
new file mode 100755
index 0000000000..49a5ecc250
--- /dev/null
+++ b/audio/softsynth/mt32/globals.h
@@ -0,0 +1,119 @@
+/* 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_GLOBALS_H
+#define MT32EMU_GLOBALS_H
+
+#include "config.h"
+
+/* Support for compiling shared library. */
+#ifdef MT32EMU_SHARED
+#if defined _WIN32 || defined __CYGWIN__
+#ifdef _MSC_VER
+#ifdef mt32emu_EXPORTS
+#define MT32EMU_EXPORT_ATTRIBUTE _declspec(dllexport)
+#else /* #ifdef mt32emu_EXPORTS */
+#define MT32EMU_EXPORT_ATTRIBUTE _declspec(dllimport)
+#endif /* #ifdef mt32emu_EXPORTS */
+#else /* #ifdef _MSC_VER */
+#ifdef mt32emu_EXPORTS
+#define MT32EMU_EXPORT_ATTRIBUTE __attribute__ ((dllexport))
+#else /* #ifdef mt32emu_EXPORTS */
+#define MT32EMU_EXPORT_ATTRIBUTE __attribute__ ((dllimport))
+#endif /* #ifdef mt32emu_EXPORTS */
+#endif /* #ifdef _MSC_VER */
+#else /* #if defined _WIN32 || defined __CYGWIN__ */
+#define MT32EMU_EXPORT_ATTRIBUTE __attribute__ ((visibility("default")))
+#endif /* #if defined _WIN32 || defined __CYGWIN__ */
+#else /* #ifdef MT32EMU_SHARED */
+#define MT32EMU_EXPORT_ATTRIBUTE
+#endif /* #ifdef MT32EMU_SHARED */
+
+#if MT32EMU_EXPORTS_TYPE == 1 || MT32EMU_EXPORTS_TYPE == 2
+#define MT32EMU_EXPORT
+#else
+#define MT32EMU_EXPORT MT32EMU_EXPORT_ATTRIBUTE
+#endif
+
+/* Useful constants */
+
+/* Sample rate to use in mixing. With the progress of development, we've found way too many thing dependent.
+ * In order to achieve further advance in emulation accuracy, sample rate made fixed throughout the emulator,
+ * except the emulation of analogue path.
+ * The output from the synth is supposed to be resampled externally in order to convert to the desired sample rate.
+ */
+#define MT32EMU_SAMPLE_RATE 32000
+
+/* The default value for the maximum number of partials playing simultaneously. */
+#define MT32EMU_DEFAULT_MAX_PARTIALS 32
+
+/* The higher this number, the more memory will be used, but the more samples can be processed in one run -
+ * various parts of sample generation can be processed more efficiently in a single run.
+ * A run's maximum length is that given to Synth::render(), so giving a value here higher than render() is ever
+ * called with will give no gain (but simply waste the memory).
+ * Note that this value does *not* in any way impose limitations on the length given to render(), and has no effect
+ * on the generated audio.
+ * This value must be >= 1.
+ */
+#define MT32EMU_MAX_SAMPLES_PER_RUN 4096
+
+/* The default size of the internal MIDI event queue.
+ * It holds the incoming MIDI events before the rendering engine actually processes them.
+ * The main goal is to fairly emulate the real hardware behaviour which obviously
+ * uses an internal MIDI event queue to gather incoming data as well as the delays
+ * introduced by transferring data via the MIDI interface.
+ * This also facilitates building of an external rendering loop
+ * as the queue stores timestamped MIDI events.
+ */
+#define MT32EMU_DEFAULT_MIDI_EVENT_QUEUE_SIZE 1024
+
+/* Maximum allowed size of MIDI parser input stream buffer.
+ * Should suffice for any reasonable bulk dump SysEx, as the h/w units have only 32K of RAM onboard.
+ */
+#define MT32EMU_MAX_STREAM_BUFFER_SIZE 32768
+
+/* This should correspond to the MIDI buffer size used in real h/w devices.
+ * CM-32L control ROM seems using 1000 bytes, old MT-32 isn't confirmed by now.
+ */
+#define MT32EMU_SYSEX_BUFFER_SIZE 1000
+
+#if defined(__cplusplus) && MT32EMU_API_TYPE != 1
+
+namespace MT32Emu
+{
+const unsigned int SAMPLE_RATE = MT32EMU_SAMPLE_RATE;
+#undef MT32EMU_SAMPLE_RATE
+
+const unsigned int DEFAULT_MAX_PARTIALS = MT32EMU_DEFAULT_MAX_PARTIALS;
+#undef MT32EMU_DEFAULT_MAX_PARTIALS
+
+const unsigned int MAX_SAMPLES_PER_RUN = MT32EMU_MAX_SAMPLES_PER_RUN;
+#undef MT32EMU_MAX_SAMPLES_PER_RUN
+
+const unsigned int DEFAULT_MIDI_EVENT_QUEUE_SIZE = MT32EMU_DEFAULT_MIDI_EVENT_QUEUE_SIZE;
+#undef MT32EMU_DEFAULT_MIDI_EVENT_QUEUE_SIZE
+
+const unsigned int MAX_STREAM_BUFFER_SIZE = MT32EMU_MAX_STREAM_BUFFER_SIZE;
+#undef MT32EMU_MAX_STREAM_BUFFER_SIZE
+
+const unsigned int SYSEX_BUFFER_SIZE = MT32EMU_SYSEX_BUFFER_SIZE;
+#undef MT32EMU_SYSEX_BUFFER_SIZE
+}
+
+#endif /* #if defined(__cplusplus) && MT32EMU_API_TYPE != 1 */
+
+#endif /* #ifndef MT32EMU_GLOBALS_H */