Committed the actual Nuked OPL code that I forgot before.

src/dosbox/nukedopl.h

@@ -0,0 +1,116 @@
+//
+// Copyright (C) 2013-2016 Alexey Khokholov (Nuke.YKT)
+//
+// 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.
+//
+//
+//  Nuked OPL3 emulator.
+//  Thanks:
+//      MAME Development Team(Jarek Burczynski, Tatsuyuki Satoh):
+//          Feedback and Rhythm part calculation information.
+//      forums.submarine.org.uk(carbon14, opl3):
+//          Tremolo and phase generator calculation information.
+//      OPLx decapsulated(Matthew Gambrell, Olli Niemitalo):
+//          OPL2 ROMs.
+//
+
+#ifndef NUKEDOPL_H
+#define NUKEDOPL_H
+
+//#include "dosbox.h"
+#include <stdint.h>
+typedef signed int Bits;
+typedef unsigned int Bitu;
+typedef int8_t   Bit8s;
+typedef uint8_t  Bit8u;
+typedef int16_t  Bit16s;
+typedef uint16_t Bit16u;
+typedef int32_t  Bit32s;
+typedef uint32_t Bit32u;
+
+struct opl3_chip;
+struct opl3_slot;
+struct opl3_channel;
+
+struct opl3_slot {
+    opl3_channel *channel;
+    opl3_chip *chip;
+    Bit16s out;
+    Bit16s fbmod;
+    Bit16s *mod;
+    Bit16s prout;
+    Bit16s eg_rout;
+    Bit16s eg_out;
+    Bit8u eg_inc;
+    Bit8u eg_gen;
+    Bit8u eg_rate;
+    Bit8u eg_ksl;
+    Bit8u *trem;
+    Bit8u reg_vib;
+    Bit8u reg_type;
+    Bit8u reg_ksr;
+    Bit8u reg_mult;
+    Bit8u reg_ksl;
+    Bit8u reg_tl;
+    Bit8u reg_ar;
+    Bit8u reg_dr;
+    Bit8u reg_sl;
+    Bit8u reg_rr;
+    Bit8u reg_wf;
+    Bit8u key;
+    Bit32u pg_phase;
+    Bit32u timer;
+};
+
+struct opl3_channel {
+    opl3_slot *slots[2];
+    opl3_channel *pair;
+    opl3_chip *chip;
+    Bit16s *out[4];
+    Bit8u chtype;
+    Bit16u f_num;
+    Bit8u block;
+    Bit8u fb;
+    Bit8u con;
+    Bit8u alg;
+    Bit8u ksv;
+    Bit16u cha, chb;
+};
+
+struct opl3_chip {
+    opl3_channel channel[18];
+    opl3_slot slot[36];
+    Bit16u timer;
+    Bit8u newm;
+    Bit8u nts;
+    Bit8u rhy;
+    Bit8u vibpos;
+    Bit8u vibshift;
+    Bit8u tremolo;
+    Bit8u tremolopos;
+    Bit8u tremoloshift;
+    Bit32u noise;
+    Bit16s zeromod;
+    Bit32s mixbuff[2];
+
+    Bit32s rateratio;
+    Bit32s samplecnt;
+    Bit16s oldsamples[2];
+    Bit16s samples[2];
+};
+
+void OPL3_Generate(opl3_chip *chip, Bit16s *buf);
+void OPL3_GenerateResampled(opl3_chip *chip, Bit16s *buf);
+void OPL3_Reset(opl3_chip *chip, Bit32u samplerate);
+Bit32u OPL3_WriteAddr(opl3_chip *chip, Bit32u port, Bit8u val);
+void OPL3_WriteReg(opl3_chip *chip, Bit16u reg, Bit8u v);
+void OPL3_GenerateStream(opl3_chip *chip, Bit16s *sndptr, Bit32u numsamples);
+#endif