Move nukedopl to libs

This way there's no need to reformat the nukedopl code to adhere to
DOSBox coding conventions.

src/libs/Makefile.am

@@ -1,4 +1,3 @@
 AM_CPPFLAGS = -I$(top_srcdir)/include
 
-SUBDIRS = zmbv gui_tk decoders
-
+SUBDIRS = zmbv gui_tk decoders nuked

src/libs/nuked/Makefile.am

@@ -0,0 +1,7 @@
+AM_CPPFLAGS = -I$(top_srcdir)/include
+
+EXTRA_DIST = nukedopl.h
+
+noinst_LIBRARIES = libnuked.a
+
+libnuked_a_SOURCES = nukedopl.cpp

src/libs/nuked/nukedopl.h

@@ -0,0 +1,138 @@
+//
+// Copyright (C) 2013-2018 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.
+//      siliconpr0n.org(John McMaster, digshadow):
+//          YMF262 and VRC VII decaps and die shots.
+//
+// version: 1.8
+//
+
+#ifndef OPL_OPL3_H
+#define OPL_OPL3_H
+#define OPL_WRITEBUF_SIZE   1024
+#define OPL_WRITEBUF_DELAY  1
+
+#include "dosbox.h"
+
+typedef struct _opl3_slot opl3_slot;
+typedef struct _opl3_channel opl3_channel;
+typedef struct _opl3_chip opl3_chip;
+
+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_reset;
+    Bit32u pg_phase;
+    Bit16u pg_phase_out;
+    Bit8u slot_num;
+};
+
+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;
+    Bit8u ch_num;
+};
+
+typedef struct _opl3_writebuf {
+    Bit64u time;
+    Bit16u reg;
+    Bit8u data;
+} opl3_writebuf;
+
+struct _opl3_chip {
+    opl3_channel channel[18];
+    opl3_slot slot[36];
+    Bit16u timer;
+    Bit64u eg_timer;
+    Bit8u eg_timerrem;
+    Bit8u eg_state;
+    Bit8u eg_add;
+    Bit8u newm;
+    Bit8u nts;
+    Bit8u rhy;
+    Bit8u vibpos;
+    Bit8u vibshift;
+    Bit8u tremolo;
+    Bit8u tremolopos;
+    Bit8u tremoloshift;
+    Bit32u noise;
+    Bit16s zeromod;
+    Bit32s mixbuff[2];
+    Bit8u rm_hh_bit2;
+    Bit8u rm_hh_bit3;
+    Bit8u rm_hh_bit7;
+    Bit8u rm_hh_bit8;
+    Bit8u rm_tc_bit3;
+    Bit8u rm_tc_bit5;
+    //OPL3L
+    Bit32s rateratio;
+    Bit32s samplecnt;
+    Bit16s oldsamples[2];
+    Bit16s samples[2];
+
+    Bit64u writebuf_samplecnt;
+    Bit32u writebuf_cur;
+    Bit32u writebuf_last;
+    Bit64u writebuf_lasttime;
+    opl3_writebuf writebuf[OPL_WRITEBUF_SIZE];
+};
+
+void OPL3_Generate(opl3_chip *chip, Bit16s *buf);
+void OPL3_GenerateResampled(opl3_chip *chip, Bit16s *buf);
+void OPL3_Reset(opl3_chip *chip, Bit32u samplerate);
+void OPL3_WriteReg(opl3_chip *chip, Bit16u reg, Bit8u v);
+void OPL3_WriteRegBuffered(opl3_chip *chip, Bit16u reg, Bit8u v);
+void OPL3_GenerateStream(opl3_chip *chip, Bit16s *sndptr, Bit32u numsamples);
+#endif