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
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
|
/*
* resid-fp.cc - reSID-fp interface code.
*
* Written by
* Teemu Rantanen <tvr@cs.hut.fi>
* Dag Lem <resid@nimrod.no>
* Andreas Boose <viceteam@t-online.de>
* Antti S. Lankila <alankila@bel.fi>
*
* This file is part of VICE, the Versatile Commodore Emulator.
* See README for copyright notice.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA.
*
*/
/* resid itself is always compiled with C64DTV support */
#include "resid-fp/sid.h"
extern "C" {
/* QNX has problems with const and inline definitions
in its string.h file when using g++ */
#ifndef __QNX__
#include <string.h>
#endif
#include "sid/sid.h" /* sid_engine_t */
#include "lib.h"
#include "log.h"
#include "resid-fp.h"
#include "resources.h"
#include "sid-snapshot.h"
#include "types.h"
struct sound_s
{
/* resid sid implementation */
SIDFP *sid;
};
typedef struct sound_s sound_t;
static sound_t *residfp_open(BYTE *sidstate)
{
sound_t *psid;
int i;
psid = new sound_t;
psid->sid = new SIDFP;
for (i = 0x00; i <= 0x18; i++) {
psid->sid->write(i, sidstate[i]);
}
return psid;
}
static int residfp_init(sound_t *psid, int speed, int cycles_per_sec)
{
sampling_method method;
char model_text[100];
char method_text[100];
float passband;
int filters_enabled, model, sampling, passband_percentage;
if (resources_get_int("SidFilters", &filters_enabled) < 0)
return 0;
if (resources_get_int("SidModel", &model) < 0)
return 0;
if (resources_get_int("SidResidSampling", &sampling) < 0)
return 0;
if (resources_get_int("SidResidPassband", &passband_percentage) < 0)
return 0;
passband = speed * passband_percentage / 200.f;
/* Some mostly-common settings for all modes abstracted here. */
psid->sid->input(0);
/* Model numbers 8-15 are reserved for distorted 6581s. */
if (model < 8 || model > 15) {
psid->sid->set_chip_model(MOS8580FP);
psid->sid->set_voice_nonlinearity(1.0f);
psid->sid->get_filter().set_distortion_properties(0.f, 0.f, 0.f);
} else {
psid->sid->set_chip_model(MOS6581FP);
psid->sid->set_voice_nonlinearity(0.96f);
psid->sid->get_filter().set_distortion_properties(3.7e-3f, 2048.f, 1.2e-4f);
}
switch (model) {
case SID_MODEL_8580R5_3691:
psid->sid->get_filter().set_type4_properties(6.55f, 20.0f);
strcpy(model_text, "8580R5 3691");
break;
case SID_MODEL_8580R5_3691D:
psid->sid->get_filter().set_type4_properties(6.55f, 20.0f);
psid->sid->input(-32768);
strcpy(model_text, "8580R5 3691 + digi boost");
break;
case SID_MODEL_8580R5_1489:
psid->sid->get_filter().set_type4_properties(5.7f, 20.0f);
strcpy(model_text, "8580R5 1489");
break;
case SID_MODEL_8580R5_1489D:
psid->sid->get_filter().set_type4_properties(5.7f, 20.0f);
psid->sid->input(-32768);
strcpy(model_text, "8580R5 1489 + digi boost");
break;
case SID_MODEL_6581R3_4885:
psid->sid->get_filter().set_type3_properties(8.5e5f, 2.2e6f, 1.0075f, 1.8e4f);
strcpy(model_text, "6581R3 4885");
break;
case SID_MODEL_6581R3_0486S:
psid->sid->get_filter().set_type3_properties(1.1e6f, 1.5e7f, 1.006f, 1e4f);
strcpy(model_text, "6581R3 0486S");
break;
case SID_MODEL_6581R3_3984:
psid->sid->get_filter().set_type3_properties(1.8e6f, 3.5e7f, 1.0051f, 1.45e4f);
strcpy(model_text, "6581R3 3984");
break;
default:
case SID_MODEL_6581R4AR_3789:
psid->sid->get_filter().set_type3_properties(1.40e6f, 1.47e8f, 1.0059f, 1.55e4f);
strcpy(model_text, "6581R4AR 3789");
break;
case SID_MODEL_6581R3_4485:
psid->sid->get_filter().set_type3_properties(1.3e6f, 5.2e8f, 1.0053f, 1.1e4f);
strcpy(model_text, "6581R3 4485");
break;
case SID_MODEL_6581R4_1986S:
psid->sid->get_filter().set_type3_properties(1.33e6f, 2.2e9f, 1.0056f, 7e3f);
strcpy(model_text, "6581R4 1986S");
break;
}
psid->sid->enable_filter(filters_enabled ? true : false);
psid->sid->enable_external_filter(filters_enabled ? true : false);
switch (sampling) {
default:
case 1:
method = SAMPLE_INTERPOLATE;
strcpy(method_text, "interpolation");
break;
case 2:
case 3:
method = SAMPLE_RESAMPLE_INTERPOLATE;
sprintf(method_text, "%sresampling, cutoff %d Hz",
(psid->sid->sse_enabled() ? "SSE " : ""),
(int) (passband > 20000.f ? 20000.f : passband));
break;
}
//! \todo FIXME: These casts have to go away
if (!psid->sid->set_sampling_parameters((float)cycles_per_sec, method,
(float)speed, passband)) {
log_warning(LOG_DEFAULT,
"ReSID-FP: unable to set sampling mode; try increasing sampling frequency to 44.1-48 kHz and keep passband around 80-90 %%.");
return 0;
}
log_message(LOG_DEFAULT,
"ReSID-FP: %s, filter %s, sampling rate %d Hz with %s",
model_text,
filters_enabled ? "on" : "off",
speed,
method_text);
return 1;
}
static void residfp_close(sound_t *psid)
{
delete psid->sid;
delete psid;
}
static BYTE residfp_read(sound_t *psid, WORD addr)
{
return psid->sid->read(addr);
}
static void residfp_store(sound_t *psid, WORD addr, BYTE byte)
{
psid->sid->write(addr, byte);
}
static void residfp_reset(sound_t *psid, CLOCK cpu_clk)
{
psid->sid->reset();
}
static int residfp_calculate_samples(sound_t *psid, SWORD *pbuf, int nr,
int interleave, int *delta_t)
{
return psid->sid->clock(*delta_t, pbuf, nr, interleave);
}
static void residfp_prevent_clk_overflow(sound_t *psid, CLOCK sub)
{
}
static char *residfp_dump_state(sound_t *psid)
{
return lib_stralloc("");
}
static void residfp_state_read(sound_t *psid, sid_snapshot_state_t *sid_state)
{
SIDFP::State state;
unsigned int i;
state = psid->sid->read_state();
for (i = 0; i < 0x20; i++) {
sid_state->sid_register[i] = (BYTE)state.sid_register[i];
}
sid_state->bus_value = (BYTE)state.bus_value;
sid_state->bus_value_ttl = (DWORD)state.bus_value_ttl;
for (i = 0; i < 3; i++) {
sid_state->accumulator[i] = (DWORD)state.accumulator[i];
sid_state->shift_register[i] = (DWORD)state.shift_register[i];
sid_state->rate_counter[i] = (WORD)state.rate_counter[i];
sid_state->rate_counter_period[i] = (WORD)state.rate_counter_period[i];
sid_state->exponential_counter[i] = (WORD)state.exponential_counter[i];
sid_state->exponential_counter_period[i] = (WORD)state.exponential_counter_period[i];
sid_state->envelope_counter[i] = (BYTE)state.envelope_counter[i];
sid_state->envelope_state[i] = (BYTE)state.envelope_state[i];
sid_state->hold_zero[i] = (BYTE)state.hold_zero[i];
}
}
static void residfp_state_write(sound_t *psid, sid_snapshot_state_t *sid_state)
{
SIDFP::State state;
unsigned int i;
for (i = 0; i < 0x20; i++) {
state.sid_register[i] = (char)sid_state->sid_register[i];
}
state.bus_value = (reg8)sid_state->bus_value;
state.bus_value_ttl = (cycle_count)sid_state->bus_value_ttl;
for (i = 0; i < 3; i++) {
state.accumulator[i] = (reg24)sid_state->accumulator[i];
state.shift_register[i] = (reg24)sid_state->shift_register[i];
state.rate_counter[i] = (reg16)sid_state->rate_counter[i];
if (sid_state->rate_counter_period[i])
state.rate_counter_period[i] = (reg16)sid_state->rate_counter_period[i];
state.exponential_counter[i] = (reg16)sid_state->exponential_counter[i];
if (sid_state->exponential_counter_period[i])
state.exponential_counter_period[i] = (reg16)sid_state->exponential_counter_period[i];
state.envelope_counter[i] = (reg8)sid_state->envelope_counter[i];
state.envelope_state[i] = (EnvelopeGeneratorFP::State)sid_state->envelope_state[i];
state.hold_zero[i] = (sid_state->hold_zero[i] != 0);
}
psid->sid->write_state((const SIDFP::State)state);
}
sid_engine_t residfp_hooks =
{
residfp_open,
residfp_init,
residfp_close,
residfp_read,
residfp_store,
residfp_reset,
residfp_calculate_samples,
residfp_prevent_clk_overflow,
residfp_dump_state,
residfp_state_read,
residfp_state_write
};
} // extern "C"
|