summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/sound/disc_mth.h
blob: 418554b2ce4415dc0ee7d3762ed1bd1809170edc (plain) (blame)
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
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
// license:BSD-3-Clause
// copyright-holders:K.Wilkins,Couriersud,Derrick Renaud,Frank Palazzolo
#ifndef MAME_SOUND_DISC_MTH_H
#define MAME_SOUND_DISC_MTH_H

#pragma once

/***********************************************************************
 *
 *  MAME - Discrete sound system emulation library
 *
 *  Written by K.Wilkins (mame@esplexo.co.uk)
 *
 *  (c) K.Wilkins 2000
 *
 *  Coding started in November 2000
 *
 *  Additions/bugfix February 2003 - Derrick Renaud, F.Palazzolo, K.Wilkins
 *  Discrete parallel tasks 2009 - Couriersud
 *  Discrete classes 2010        - Couriersud
 *
 ***********************************************************************/

#include "discrete.h"

DISCRETE_CLASS_STEP(dst_adder, 1, /* no context */ );

DISCRETE_CLASS_STEP(dst_clamp, 1, /* no context */ );

DISCRETE_CLASS_STEP(dst_divide, 1, /* no context */ );

DISCRETE_CLASS_STEP(dst_gain, 1, /* no context */ );

DISCRETE_CLASS_STEP(dst_logic_inv, 1, /* no context */ );

DISCRETE_CLASS_STEP_RESET(dst_bits_decode, 8,
	int             m_count;
	int             m_decode_x_time;
	int             m_from;
	int             m_last_val;
	int             m_last_had_x_time;
);

DISCRETE_CLASS_STEP(dst_logic_and, 1, /* no context */ );

DISCRETE_CLASS_STEP(dst_logic_nand, 1, /* no context */ );

DISCRETE_CLASS_STEP(dst_logic_or, 1, /* no context */ );

DISCRETE_CLASS_STEP(dst_logic_nor, 1, /* no context */ );

DISCRETE_CLASS_STEP(dst_logic_xor, 1, /* no context */ );

DISCRETE_CLASS_STEP(dst_logic_nxor, 1, /* no context */ );

DISCRETE_CLASS_STEP_RESET(dst_logic_dff, 1,
	int             m_last_clk;
);

DISCRETE_CLASS_STEP_RESET(dst_logic_jkff, 1,
	double          m_v_out;
	int             m_last_clk;
);

DISCRETE_CLASS_STEP_RESET(dst_logic_shift, 1,
	double          m_t_left;                   /* time unused during last sample in seconds */
	uint32_t          m_shift_data;
	uint32_t          m_bit_mask;
	uint8_t           m_clock_type;
	uint8_t           m_reset_on_high;
	uint8_t           m_shift_r;
	uint8_t           m_last;
);

DISCRETE_CLASS_STEP(dst_lookup_table, 1, /* no context */ );

DISCRETE_CLASS_STEP_RESET(dst_multiplex, 1,
	int             m_size;
);

DISCRETE_CLASS_STEP_RESET(dst_oneshot, 1,
	double          m_countdown;
	int             m_state;
	int             m_last_trig;
	int             m_type;
);

DISCRETE_CLASS_STEP_RESET(dst_ramp, 1,
	double          m_v_out;
	double          m_step;
	int             m_dir;                  /* 1 if End is higher then Start */
	int             m_last_en;              /* Keep track of the last enable value */
);

DISCRETE_CLASS_STEP_RESET(dst_samphold, 1,
	double          m_last_input;
	int             m_clocktype;
);

DISCRETE_CLASS_STEP(dst_switch, 1, /* no context */ );

DISCRETE_CLASS_STEP(dst_aswitch, 1, /* no context */ );

DISCRETE_CLASS_STEP(, 1, /* no context */ );
class DISCRETE_CLASS_NAME(dst_transform): public discrete_base_node, public discrete_step_interface
{
	DISCRETE_CLASS_CONSTRUCTOR(dst_transform, base)
	DISCRETE_CLASS_DESTRUCTOR(dst_transform)
public:
	enum token {
		TOK_END = 0,
		TOK_MULT,
		TOK_DIV,
		TOK_ADD,
		TOK_MINUS,
		TOK_0,
		TOK_1,
		TOK_2,
		TOK_3,
		TOK_4,
		TOK_DUP,
		TOK_ABS,         /* absolute value */
		TOK_NEG,         /* * -1 */
		TOK_NOT,         /* Logical NOT of Last Value */
		TOK_EQUAL,       /* Logical = */
		TOK_GREATER,     /* Logical > */
		TOK_LESS,        /* Logical < */
		TOK_AND,         /* Bitwise AND */
		TOK_OR,          /* Bitwise OR */
		TOK_XOR          /* Bitwise XOR */
	};
	void step(void) override;
	void reset(void) override;
private:
	DISCRETE_CLASS_INPUT(I_IN0,     0);
	DISCRETE_CLASS_INPUT(I_IN1,     1);
	DISCRETE_CLASS_INPUT(I_IN2,     2);
	DISCRETE_CLASS_INPUT(I_IN3,     3);
	DISCRETE_CLASS_INPUT(I_IN4,     4);
	enum token precomp[32];
};

/* Component specific */

DISCRETE_CLASS_STEP_RESET(dst_comp_adder, 1,
	double          m_total[256];
);

DISCRETE_CLASS_STEP_RESET(dst_dac_r1, 1,
	double          m_v_out;
	double          m_exponent;
	double          m_last_v;
	double          m_v_step[256];
	int             m_has_c_filter;
);

DISCRETE_CLASS_STEP_RESET(dst_diode_mix, 1,
	int             m_size;
	double          m_v_junction[8];
);

DISCRETE_CLASS_STEP_RESET(dst_integrate, 1,
	double          m_v_out;
	double          m_change;
	double          m_v_max_in;             /* v1 - norton VBE */
	double          m_v_max_in_d;           /* v1 - norton VBE - diode drop */
	double          m_v_max_out;
);

#define DISC_MIXER_MAX_INPS 8
DISCRETE_CLASS_STEP_RESET(dst_mixer, 1,
	int             m_type;
	int             m_size;
	int             m_r_node_bit_flag;
	int             m_c_bit_flag;
	double          m_r_total;
	const double *  m_r_node[DISC_MIXER_MAX_INPS];      /* Either pointer to resistance node output OR nullptr */
	double          m_r_last[DISC_MIXER_MAX_INPS];
	double          m_exponent_rc[DISC_MIXER_MAX_INPS]; /* For high pass filtering cause by cIn */
	double          m_v_cap[DISC_MIXER_MAX_INPS];       /* cap voltage of each input */
	double          m_exponent_c_f;         /* Low pass on mixed inputs */
	double          m_exponent_c_amp;       /* Final high pass caused by out cap and amp input impedance */
	double          m_v_cap_f;              /* cap voltage of cF */
	double          m_v_cap_amp;            /* cap voltage of cAmp */
	double          m_gain;                 /* used for DISC_MIXER_IS_OP_AMP_WITH_RI */
);

DISCRETE_CLASS_STEP_RESET(dst_op_amp, 1,
	uint8_t           m_has_cap;
	uint8_t           m_has_r1;
	uint8_t           m_has_r4;
	double          m_v_max;
	double          m_i_fixed;
	double          m_v_cap;
	double          m_exponent;
);

DISCRETE_CLASS_STEP_RESET(dst_op_amp_1sht, 1,
	double          m_v_out;
	double          m_i_fixed;
	double          m_v_max;
	double          m_r34ratio;
	double          m_v_cap1;
	double          m_v_cap2;
	double          m_exponent1c;
	double          m_exponent1d;
	double          m_exponent2;
);

DISCRETE_CLASS_STEP_RESET(dst_tvca_op_amp, 1,
	double          m_v_out_max;            /* Maximum output voltage */
	double          m_v_trig[2];            /* Voltage used to charge cap1 based on function F3 */
	double          m_v_trig2;              /* Voltage used to charge cap2 */
	double          m_v_trig3;              /* Voltage used to charge cap3 */
	double          m_i_fixed;              /* Fixed current going into - input */
	double          m_exponent_c[2];        /* Charge exponents based on function F3 */
	double          m_exponent_d[2];        /* Discharge exponents based on function F3 */
	double          m_exponent2[2];         /* Discharge/charge exponents based on function F4 */
	double          m_exponent3[2];         /* Discharge/charge exponents based on function F5 */
	double          m_exponent4;            /* Discharge/charge exponents for c4 */
	double          m_v_cap1;               /* charge on cap c1 */
	double          m_v_cap2;               /* charge on cap c2 */
	double          m_v_cap3;               /* charge on cap c3 */
	double          m_v_cap4;               /* charge on cap c4 */
	double          m_r67;                  /* = r6 + r7 (for easy use later) */
	uint8_t           m_has_c4;
	uint8_t           m_has_r4;
);

DISCRETE_CLASS_STEP(dst_xtime_buffer, 1, /* no context */ );

DISCRETE_CLASS_STEP(dst_xtime_and, 1, /* no context */ );

DISCRETE_CLASS_STEP(dst_xtime_or, 1, /* no context */ );

DISCRETE_CLASS_STEP(dst_xtime_xor, 1, /* no context */ );


#endif // MAME_SOUND_DISC_MTH_H