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diff --git a/utils/winmm_drv/src/MidiSynth.h b/utils/winmm_drv/src/MidiSynth.h
new file mode 100644
index 0000000..bf2da02
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+++ b/utils/winmm_drv/src/MidiSynth.h
@@ -0,0 +1,90 @@
+/* Copyright (C) 2011, 2012 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/>.
+ */
+
+#pragma once
+
+#include "stdafx.h"
+#include "regconfig.h"
+
+#ifndef OPL3EMU_MIDISYNTH_H
+#define OPL3EMU_MIDISYNTH_H
+
+typedef  unsigned char      Bit8u;
+typedef    signed char      Bit8s;
+typedef unsigned short      Bit16u;
+typedef   signed short      Bit16s;
+typedef  unsigned long      Bit32u;
+typedef    signed long      Bit32s;
+typedef unsigned __int64    Bit64u;
+typedef   signed __int64    Bit64s;
+typedef unsigned int        Bitu;
+typedef signed int          Bits;
+
+namespace OPL3Emu
+{
+
+class MidiSynth
+{
+private:
+    unsigned int sampleRate;
+    unsigned int midiLatency;
+    unsigned int bufferSize;
+    unsigned int chunkSize;
+    bool useRingBuffer;
+    bool resetEnabled;
+    float outputGain;
+    float reverbOutputGain;
+    bool reverbEnabled;
+    bool reverbOverridden;
+    Bit8u reverbMode;
+    Bit8u reverbTime;
+    Bit8u reverbLevel;
+
+    Bit16s *buffer;
+    DWORD framesRendered;
+
+    ADL_MIDIPlayer *synth;
+
+    bool m_setupInit;
+    DriverSettings m_setup;
+    DriverSettings m_setupCurrent;
+
+    unsigned int MillisToFrames(unsigned int millis);
+    void LoadSettings();
+
+    MidiSynth();
+    ~MidiSynth();
+
+public:
+    static MidiSynth &getInstance();
+    int Init();
+    void Close();
+    int Reset();
+    void ResetSynth();
+    void PanicSynth();
+    void RenderAvailableSpace();
+    void Render(Bit16s *bufpos, DWORD totalFrames);
+    void CheckForSignals();
+    void PushMIDI(DWORD msg);
+    void PlaySysex(Bit8u *bufpos, DWORD len);
+
+    void loadSetup();
+
+    void LoadSynthSetup();
+};
+
+}
+#endif