1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
//
// 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 AUDIO_SOFTSYNTH_OPL_NUKED_H
#define AUDIO_SOFTSYNTH_OPL_NUKED_H
#include "common/scummsys.h"
#include "audio/fmopl.h"
#ifndef DISABLE_NUKED_OPL
#ifndef OPL_ENABLE_STEREOEXT
#define OPL_ENABLE_STEREOEXT 0
#endif
#define OPL_WRITEBUF_SIZE 1024
#define OPL_WRITEBUF_DELAY 2
namespace OPL {
namespace NUKED {
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;
int16_t out;
int16_t fbmod;
int16_t *mod;
int16_t prout;
uint16_t eg_rout;
uint16_t eg_out;
uint8_t eg_inc;
uint8_t eg_gen;
uint8_t eg_rate;
uint8_t eg_ksl;
uint8_t *trem;
uint8_t reg_vib;
uint8_t reg_type;
uint8_t reg_ksr;
uint8_t reg_mult;
uint8_t reg_ksl;
uint8_t reg_tl;
uint8_t reg_ar;
uint8_t reg_dr;
uint8_t reg_sl;
uint8_t reg_rr;
uint8_t reg_wf;
uint8_t key;
uint32_t pg_reset;
uint32_t pg_phase;
uint16_t pg_phase_out;
uint8_t slot_num;
};
struct _opl3_channel {
opl3_slot *slotz[2];/*Don't use "slots" keyword to avoid conflict with Qt applications*/
opl3_channel *pair;
opl3_chip *chip;
int16_t *out[4];
#if OPL_ENABLE_STEREOEXT
int32_t leftpan;
int32_t rightpan;
#endif
uint8_t chtype;
uint16_t f_num;
uint8_t block;
uint8_t fb;
uint8_t con;
uint8_t alg;
uint8_t ksv;
uint16_t cha, chb;
uint16_t chc, chd;
uint8_t ch_num;
};
typedef struct _opl3_writebuf {
uint64_t time;
uint16_t reg;
uint8_t data;
} opl3_writebuf;
struct _opl3_chip {
opl3_channel channel[18];
opl3_slot slot[36];
uint16_t timer;
uint64_t eg_timer;
uint8_t eg_timerrem;
uint8_t eg_state;
uint8_t eg_add;
uint8_t eg_timer_lo;
uint8_t newm;
uint8_t nts;
uint8_t rhy;
uint8_t vibpos;
uint8_t vibshift;
uint8_t tremolo;
uint8_t tremolopos;
uint8_t tremoloshift;
uint32_t noise;
int16_t zeromod;
int32_t mixbuff[4];
uint8_t rm_hh_bit2;
uint8_t rm_hh_bit3;
uint8_t rm_hh_bit7;
uint8_t rm_hh_bit8;
uint8_t rm_tc_bit3;
uint8_t rm_tc_bit5;
#if OPL_ENABLE_STEREOEXT
uint8_t stereoext;
#endif
/* OPL3L */
int32_t rateratio;
int32_t samplecnt;
int16_t oldsamples[4];
int16_t samples[4];
uint64_t writebuf_samplecnt;
uint32_t writebuf_cur;
uint32_t writebuf_last;
uint64_t writebuf_lasttime;
opl3_writebuf writebuf[OPL_WRITEBUF_SIZE];
};
void OPL3_Generate(opl3_chip *chip, int16_t *buf);
void OPL3_GenerateResampled(opl3_chip *chip, int16_t *buf);
void OPL3_Reset(opl3_chip *chip, uint32_t samplerate);
void OPL3_WriteReg(opl3_chip *chip, uint16_t reg, uint8_t v);
void OPL3_WriteRegBuffered(opl3_chip *chip, uint16_t reg, uint8_t v);
void OPL3_GenerateStream(opl3_chip *chip, int16_t *sndptr, uint32_t numsamples);
void OPL3_Generate4Ch(opl3_chip *chip, int16_t *buf4);
void OPL3_Generate4ChResampled(opl3_chip *chip, int16_t *buf4);
void OPL3_Generate4ChStream(opl3_chip *chip, int16_t *sndptr1, int16_t *sndptr2, uint32_t numsamples);
class OPL : public ::OPL::OPL, public Audio::EmulatedChip {
private:
Config::OplType _type;
uint _rate;
opl3_chip chip;
uint address[2];
void dualWrite(uint8 index, uint8 reg, uint8 val);
public:
OPL(Config::OplType type);
~OPL();
bool init();
void reset();
void write(int a, int v);
void writeReg(int r, int v);
bool isStereo() const { return true; }
protected:
void generateSamples(int16 *buffer, int length);
};
}
}
#endif // !DISABLE_NUKED_OPL
#endif
|
