108 lines
2.3 KiB
C
108 lines
2.3 KiB
C
/* Copyright holders: Alexey Khokholov (Nuke.YKT)
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see COPYING for more details
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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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//
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#ifndef NUKEDOPL_H
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#define NUKEDOPL_H
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//#include "dosbox.h"
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#include <stdint.h>
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typedef signed int Bits;
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typedef unsigned int Bitu;
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typedef int8_t Bit8s;
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typedef uint8_t Bit8u;
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typedef int16_t Bit16s;
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typedef uint16_t Bit16u;
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typedef int32_t Bit32s;
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typedef uint32_t Bit32u;
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struct opl3_chip;
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struct opl3_slot;
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struct opl3_channel;
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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_phase;
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Bit32u timer;
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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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};
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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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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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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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};
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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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Bit32u OPL3_WriteAddr(opl3_chip *chip, Bit32u port, Bit8u val);
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void OPL3_WriteReg(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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