mirror of
https://github.com/DrBeef/Raze.git
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160 lines
3.9 KiB
C
160 lines
3.9 KiB
C
//-------------------------------------------------------------------------
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/*
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Copyright (C) 2013-2019 Nuke.YKT
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This file is part of NBlood.
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NBlood is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License version 2
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as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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//-------------------------------------------------------------------------
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//
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// Nuked OPL3 emulator.
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// Thanks:
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// MAME Development Team(Jarek Burczynski, Tatsuyuki Satoh):
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// Feedback and Rhythm part calculation information.
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// forums.submarine.org.uk(carbon14, opl3):
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// Tremolo and phase generator calculation information.
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// OPLx decapsulated(Matthew Gambrell, Olli Niemitalo):
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// OPL2 ROMs.
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// siliconpr0n.org(John McMaster, digshadow):
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// YMF262 and VRC VII decaps and die shots.
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//
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// version: 1.8
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//
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#ifndef OPL_OPL3_H
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#define OPL_OPL3_H
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#include <inttypes.h>
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#define OPL_WRITEBUF_SIZE 1024
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#define OPL_WRITEBUF_DELAY 2
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typedef uintptr_t Bitu;
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typedef intptr_t Bits;
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typedef uint64_t Bit64u;
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typedef int64_t Bit64s;
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typedef uint32_t Bit32u;
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typedef int32_t Bit32s;
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typedef uint16_t Bit16u;
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typedef int16_t Bit16s;
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typedef uint8_t Bit8u;
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typedef int8_t Bit8s;
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typedef struct _opl3_slot opl3_slot;
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typedef struct _opl3_channel opl3_channel;
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typedef struct _opl3_chip opl3_chip;
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struct _opl3_slot {
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opl3_channel *channel;
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opl3_chip *chip;
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Bit16s out;
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Bit16s fbmod;
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Bit16s *mod;
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Bit16s prout;
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Bit16s eg_rout;
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Bit16s eg_out;
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Bit8u eg_inc;
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Bit8u eg_gen;
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Bit8u eg_rate;
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Bit8u eg_ksl;
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Bit8u *trem;
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Bit8u reg_vib;
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Bit8u reg_type;
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Bit8u reg_ksr;
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Bit8u reg_mult;
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Bit8u reg_ksl;
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Bit8u reg_tl;
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Bit8u reg_ar;
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Bit8u reg_dr;
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Bit8u reg_sl;
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Bit8u reg_rr;
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Bit8u reg_wf;
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Bit8u key;
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Bit32u pg_reset;
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Bit32u pg_phase;
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Bit16u pg_phase_out;
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Bit8u slot_num;
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};
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struct _opl3_channel {
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opl3_slot *slots[2];
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opl3_channel *pair;
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opl3_chip *chip;
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Bit16s *out[4];
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Bit8u chtype;
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Bit16u f_num;
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Bit8u block;
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Bit8u fb;
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Bit8u con;
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Bit8u alg;
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Bit8u ksv;
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Bit16u cha, chb;
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Bit32s leftpan;
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Bit32s rightpan;
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Bit8u ch_num;
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};
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typedef struct _opl3_writebuf {
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Bit64u time;
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Bit16u reg;
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Bit8u data;
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} opl3_writebuf;
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struct _opl3_chip {
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opl3_channel channel[18];
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opl3_slot slot[36];
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Bit16u timer;
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Bit64u eg_timer;
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Bit8u eg_timerrem;
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Bit8u eg_state;
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Bit8u eg_add;
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Bit8u newm;
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Bit8u nts;
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Bit8u rhy;
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Bit8u vibpos;
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Bit8u vibshift;
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Bit8u tremolo;
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Bit8u tremolopos;
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Bit8u tremoloshift;
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Bit32u noise;
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Bit16s zeromod;
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Bit32s mixbuff[2];
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Bit8u rm_hh_bit2;
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Bit8u rm_hh_bit3;
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Bit8u rm_hh_bit7;
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Bit8u rm_hh_bit8;
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Bit8u rm_tc_bit3;
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Bit8u rm_tc_bit5;
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Bit8u stereoext;
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Bit32s rateratio;
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Bit32s samplecnt;
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Bit16s oldsamples[2];
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Bit16s samples[2];
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Bit64u writebuf_samplecnt;
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Bit32u writebuf_cur;
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Bit32u writebuf_last;
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Bit64u writebuf_lasttime;
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opl3_writebuf writebuf[OPL_WRITEBUF_SIZE];
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};
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void OPL3_Generate(opl3_chip *chip, Bit16s *buf);
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void OPL3_GenerateResampled(opl3_chip *chip, Bit16s *buf);
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void OPL3_Reset(opl3_chip *chip, Bit32u samplerate);
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void OPL3_WriteReg(opl3_chip *chip, Bit16u reg, Bit8u v);
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void OPL3_WriteRegBuffered(opl3_chip *chip, Bit16u reg, Bit8u v);
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void OPL3_GenerateStream(opl3_chip *chip, Bit16s *sndptr, Bit32u numsamples);
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#endif
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