| 1 | /*********************************************************************************** |
| 2 | |
| 3 | emu2413.c -- YM2413 emulator written by Mitsutaka Okazaki 2001 |
| 4 | |
| 5 | 2001 01-08 : Version 0.10 -- 1st version. |
| 6 | 2001 01-15 : Version 0.20 -- semi-public version. |
| 7 | 2001 01-16 : Version 0.30 -- 1st public version. |
| 8 | 2001 01-17 : Version 0.31 -- Fixed bassdrum problem. |
| 9 | : Version 0.32 -- LPF implemented. |
| 10 | 2001 01-18 : Version 0.33 -- Fixed the drum problem, refine the mix-down method. |
| 11 | -- Fixed the LFO bug. |
| 12 | 2001 01-24 : Version 0.35 -- Fixed the drum problem, |
| 13 | support undocumented EG behavior. |
| 14 | 2001 02-02 : Version 0.38 -- Improved the performance. |
| 15 | Fixed the hi-hat and cymbal model. |
| 16 | Fixed the default percussive datas. |
| 17 | Noise reduction. |
| 18 | Fixed the feedback problem. |
| 19 | 2001 03-03 : Version 0.39 -- Fixed some drum bugs. |
| 20 | Improved the performance. |
| 21 | 2001 03-04 : Version 0.40 -- Improved the feedback. |
| 22 | Change the default table size. |
| 23 | Clock and Rate can be changed during play. |
| 24 | 2001 06-24 : Version 0.50 -- Improved the hi-hat and the cymbal tone. |
| 25 | Added VRC7 patch (OPLL_reset_patch is changed). |
| 26 | Fixed OPLL_reset() bug. |
| 27 | Added OPLL_setMask, OPLL_getMask and OPLL_toggleMask. |
| 28 | Added OPLL_writeIO. |
| 29 | 2001 09-28 : Version 0.51 -- Removed the noise table. |
| 30 | 2002 01-28 : Version 0.52 -- Added Stereo mode. |
| 31 | 2002 02-07 : Version 0.53 -- Fixed some drum bugs. |
| 32 | 2002 02-20 : Version 0.54 -- Added the best quality mode. |
| 33 | 2002 03-02 : Version 0.55 -- Removed OPLL_init & OPLL_close. |
| 34 | 2002 05-30 : Version 0.60 -- Fixed HH&CYM generator and all voice datas. |
| 35 | |
| 36 | 2004 01-24 : Modified by xodnizel to remove code not needed for the VRC7, among other things. |
| 37 | |
| 38 | References: |
| 39 | fmopl.c -- 1999,2000 written by Tatsuyuki Satoh (MAME development). |
| 40 | fmopl.c(fixed) -- (C) 2002 Jarek Burczynski. |
| 41 | s_opl.c -- 2001 written by Mamiya (NEZplug development). |
| 42 | fmgen.cpp -- 1999,2000 written by cisc. |
| 43 | fmpac.ill -- 2000 created by NARUTO. |
| 44 | MSX-Datapack |
| 45 | YMU757 data sheet |
| 46 | YM2143 data sheet |
| 47 | |
| 48 | **************************************************************************************/ |
| 49 | #include <stdio.h> |
| 50 | #include <stdlib.h> |
| 51 | #include <string.h> |
| 52 | #include <math.h> |
| 53 | #include "emu2413.h" |
| 54 | |
| 55 | static const unsigned char default_inst[15][8] = { |
| 56 | #include "vrc7tone.h" |
| 57 | }; |
| 58 | |
| 59 | /* Size of Sintable ( 8 -- 18 can be used. 9 recommended.)*/ |
| 60 | #define PG_BITS 9 |
| 61 | #define PG_WIDTH (1<<PG_BITS) |
| 62 | |
| 63 | /* Phase increment counter */ |
| 64 | #define DP_BITS 18 |
| 65 | #define DP_WIDTH (1<<DP_BITS) |
| 66 | #define DP_BASE_BITS (DP_BITS - PG_BITS) |
| 67 | |
| 68 | /* Dynamic range (Accuracy of sin table) */ |
| 69 | #define DB_BITS 8 |
| 70 | #define DB_STEP (48.0/(1<<DB_BITS)) |
| 71 | #define DB_MUTE (1<<DB_BITS) |
| 72 | |
| 73 | /* Dynamic range of envelope */ |
| 74 | #define EG_STEP 0.375 |
| 75 | #define EG_BITS 7 |
| 76 | #define EG_MUTE (1<<EG_BITS) |
| 77 | |
| 78 | /* Dynamic range of total level */ |
| 79 | #define TL_STEP 0.75 |
| 80 | #define TL_BITS 6 |
| 81 | #define TL_MUTE (1<<TL_BITS) |
| 82 | |
| 83 | /* Dynamic range of sustine level */ |
| 84 | #define SL_STEP 3.0 |
| 85 | #define SL_BITS 4 |
| 86 | #define SL_MUTE (1<<SL_BITS) |
| 87 | |
| 88 | #define EG2DB(d) ((d)*(e_int32)(EG_STEP/DB_STEP)) |
| 89 | #define TL2EG(d) ((d)*(e_int32)(TL_STEP/EG_STEP)) |
| 90 | #define SL2EG(d) ((d)*(e_int32)(SL_STEP/EG_STEP)) |
| 91 | |
| 92 | #define DB_POS(x) (e_uint32)((x)/DB_STEP) |
| 93 | #define DB_NEG(x) (e_uint32)(DB_MUTE+DB_MUTE+(x)/DB_STEP) |
| 94 | |
| 95 | /* Bits for liner value */ |
| 96 | #define DB2LIN_AMP_BITS 11 |
| 97 | #define SLOT_AMP_BITS (DB2LIN_AMP_BITS) |
| 98 | |
| 99 | /* Bits for envelope phase incremental counter */ |
| 100 | #define EG_DP_BITS 22 |
| 101 | #define EG_DP_WIDTH (1<<EG_DP_BITS) |
| 102 | |
| 103 | /* Bits for Pitch and Amp modulator */ |
| 104 | #define PM_PG_BITS 8 |
| 105 | #define PM_PG_WIDTH (1<<PM_PG_BITS) |
| 106 | #define PM_DP_BITS 16 |
| 107 | #define PM_DP_WIDTH (1<<PM_DP_BITS) |
| 108 | #define AM_PG_BITS 8 |
| 109 | #define AM_PG_WIDTH (1<<AM_PG_BITS) |
| 110 | #define AM_DP_BITS 16 |
| 111 | #define AM_DP_WIDTH (1<<AM_DP_BITS) |
| 112 | |
| 113 | /* PM table is calcurated by PM_AMP * pow(2,PM_DEPTH*sin(x)/1200) */ |
| 114 | #define PM_AMP_BITS 8 |
| 115 | #define PM_AMP (1<<PM_AMP_BITS) |
| 116 | |
| 117 | /* PM speed(Hz) and depth(cent) */ |
| 118 | #define PM_SPEED 6.4 |
| 119 | #define PM_DEPTH 13.75 |
| 120 | |
| 121 | /* AM speed(Hz) and depth(dB) */ |
| 122 | #define AM_SPEED 3.7 |
| 123 | //#define AM_DEPTH 4.8 |
| 124 | #define AM_DEPTH 2.4 |
| 125 | |
| 126 | /* Cut the lower b bit(s) off. */ |
| 127 | #define HIGHBITS(c,b) ((c)>>(b)) |
| 128 | |
| 129 | /* Leave the lower b bit(s). */ |
| 130 | #define LOWBITS(c,b) ((c)&((1<<(b))-1)) |
| 131 | |
| 132 | /* Expand x which is s bits to d bits. */ |
| 133 | #define EXPAND_BITS(x,s,d) ((x)<<((d)-(s))) |
| 134 | |
| 135 | /* Expand x which is s bits to d bits and fill expanded bits '1' */ |
| 136 | #define EXPAND_BITS_X(x,s,d) (((x)<<((d)-(s)))|((1<<((d)-(s)))-1)) |
| 137 | |
| 138 | /* Adjust envelope speed which depends on sampling rate. */ |
| 139 | #define rate_adjust(x) (rate==49716?x:(e_uint32)((double)(x)*clk/72/rate + 0.5)) /* added 0.5 to round the value*/ |
| 140 | |
| 141 | #define MOD(o,x) (&(o)->slot[(x)<<1]) |
| 142 | #define CAR(o,x) (&(o)->slot[((x)<<1)|1]) |
| 143 | |
| 144 | #define BIT(s,b) (((s)>>(b))&1) |
| 145 | |
| 146 | /* Input clock */ |
| 147 | static e_uint32 clk = 844451141; |
| 148 | /* Sampling rate */ |
| 149 | static e_uint32 rate = 3354932; |
| 150 | |
| 151 | /* WaveTable for each envelope amp */ |
| 152 | static e_uint16 fullsintable[PG_WIDTH]; |
| 153 | static e_uint16 halfsintable[PG_WIDTH]; |
| 154 | |
| 155 | static e_uint16 *waveform[2] = { fullsintable, halfsintable }; |
| 156 | |
| 157 | /* LFO Table */ |
| 158 | static e_int32 pmtable[PM_PG_WIDTH]; |
| 159 | static e_int32 amtable[AM_PG_WIDTH]; |
| 160 | |
| 161 | /* Phase delta for LFO */ |
| 162 | static e_uint32 pm_dphase; |
| 163 | static e_uint32 am_dphase; |
| 164 | |
| 165 | /* dB to Liner table */ |
| 166 | static e_int16 DB2LIN_TABLE[(DB_MUTE + DB_MUTE) * 2]; |
| 167 | |
| 168 | /* Liner to Log curve conversion table (for Attack rate). */ |
| 169 | static e_uint16 AR_ADJUST_TABLE[1 << EG_BITS]; |
| 170 | |
| 171 | /* Definition of envelope mode */ |
| 172 | enum |
| 173 | { SETTLE, ATTACK, DECAY, SUSHOLD, SUSTINE, RELEASE, FINISH }; |
| 174 | |
| 175 | /* Phase incr table for Attack */ |
| 176 | static e_uint32 dphaseARTable[16][16]; |
| 177 | /* Phase incr table for Decay and Release */ |
| 178 | static e_uint32 dphaseDRTable[16][16]; |
| 179 | |
| 180 | /* KSL + TL Table */ |
| 181 | static e_uint32 tllTable[16][8][1 << TL_BITS][4]; |
| 182 | static e_int32 rksTable[2][8][2]; |
| 183 | |
| 184 | /* Phase incr table for PG */ |
| 185 | static e_uint32 dphaseTable[512][8][16]; |
| 186 | |
| 187 | /*************************************************** |
| 188 | |
| 189 | Create tables |
| 190 | |
| 191 | ****************************************************/ |
| 192 | INLINE static e_int32 |
| 193 | Min (e_int32 i, e_int32 j) |
| 194 | { |
| 195 | if(i < j) |
| 196 | return i; |
| 197 | else |
| 198 | return j; |
| 199 | } |
| 200 | |
| 201 | /* Table for AR to LogCurve. */ |
| 202 | static void |
| 203 | makeAdjustTable (void) |
| 204 | { |
| 205 | e_int32 i; |
| 206 | |
| 207 | AR_ADJUST_TABLE[0] = (1 << EG_BITS); |
| 208 | for (i = 1; i < 128; i++) |
| 209 | AR_ADJUST_TABLE[i] = (e_uint16) ((double) (1 << EG_BITS) - 1 - (1 << EG_BITS) * log (i) / log (128)); |
| 210 | } |
| 211 | |
| 212 | |
| 213 | /* Table for dB(0 -- (1<<DB_BITS)-1) to Liner(0 -- DB2LIN_AMP_WIDTH) */ |
| 214 | static void |
| 215 | makeDB2LinTable (void) |
| 216 | { |
| 217 | e_int32 i; |
| 218 | |
| 219 | for (i = 0; i < DB_MUTE + DB_MUTE; i++) |
| 220 | { |
| 221 | DB2LIN_TABLE[i] = (e_int16) ((double) ((1 << DB2LIN_AMP_BITS) - 1) * pow (10, -(double) i * DB_STEP / 20)); |
| 222 | if(i >= DB_MUTE) DB2LIN_TABLE[i] = 0; |
| 223 | DB2LIN_TABLE[i + DB_MUTE + DB_MUTE] = (e_int16) (-DB2LIN_TABLE[i]); |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | /* Liner(+0.0 - +1.0) to dB((1<<DB_BITS) - 1 -- 0) */ |
| 228 | static e_int32 |
| 229 | lin2db (double d) |
| 230 | { |
| 231 | if(d == 0) |
| 232 | return (DB_MUTE - 1); |
| 233 | else |
| 234 | return Min (-(e_int32) (20.0 * log10 (d) / DB_STEP), DB_MUTE-1); /* 0 -- 127 */ |
| 235 | } |
| 236 | |
| 237 | |
| 238 | /* Sin Table */ |
| 239 | static void |
| 240 | makeSinTable (void) |
| 241 | { |
| 242 | e_int32 i; |
| 243 | |
| 244 | for (i = 0; i < PG_WIDTH / 4; i++) |
| 245 | { |
| 246 | fullsintable[i] = (e_uint32) lin2db (sin (2.0 * PI * i / PG_WIDTH) ); |
| 247 | } |
| 248 | |
| 249 | for (i = 0; i < PG_WIDTH / 4; i++) |
| 250 | { |
| 251 | fullsintable[PG_WIDTH / 2 - 1 - i] = fullsintable[i]; |
| 252 | } |
| 253 | |
| 254 | for (i = 0; i < PG_WIDTH / 2; i++) |
| 255 | { |
| 256 | fullsintable[PG_WIDTH / 2 + i] = (e_uint32) (DB_MUTE + DB_MUTE + fullsintable[i]); |
| 257 | } |
| 258 | |
| 259 | for (i = 0; i < PG_WIDTH / 2; i++) |
| 260 | halfsintable[i] = fullsintable[i]; |
| 261 | for (i = PG_WIDTH / 2; i < PG_WIDTH; i++) |
| 262 | halfsintable[i] = fullsintable[0]; |
| 263 | } |
| 264 | |
| 265 | /* Table for Pitch Modulator */ |
| 266 | static void |
| 267 | makePmTable (void) |
| 268 | { |
| 269 | e_int32 i; |
| 270 | |
| 271 | for (i = 0; i < PM_PG_WIDTH; i++) |
| 272 | pmtable[i] = (e_int32) ((double) PM_AMP * pow (2, (double) PM_DEPTH * sin (2.0 * PI * i / PM_PG_WIDTH) / 1200)); |
| 273 | } |
| 274 | |
| 275 | /* Table for Amp Modulator */ |
| 276 | static void |
| 277 | makeAmTable (void) |
| 278 | { |
| 279 | e_int32 i; |
| 280 | |
| 281 | for (i = 0; i < AM_PG_WIDTH; i++) |
| 282 | amtable[i] = (e_int32) ((double) AM_DEPTH / 2 / DB_STEP * (1.0 + sin (2.0 * PI * i / PM_PG_WIDTH))); |
| 283 | } |
| 284 | |
| 285 | /* Phase increment counter table */ |
| 286 | static void |
| 287 | makeDphaseTable (void) |
| 288 | { |
| 289 | e_uint32 fnum, block, ML; |
| 290 | e_uint32 mltable[16] = |
| 291 | { 1, 1 * 2, 2 * 2, 3 * 2, 4 * 2, 5 * 2, 6 * 2, 7 * 2, 8 * 2, 9 * 2, 10 * 2, 10 * 2, 12 * 2, 12 * 2, 15 * 2, 15 * 2 }; |
| 292 | |
| 293 | for (fnum = 0; fnum < 512; fnum++) |
| 294 | for (block = 0; block < 8; block++) |
| 295 | for (ML = 0; ML < 16; ML++) |
| 296 | dphaseTable[fnum][block][ML] = rate_adjust (((fnum * mltable[ML]) << block) >> (20 - DP_BITS)); |
| 297 | } |
| 298 | |
| 299 | static void |
| 300 | makeTllTable (void) |
| 301 | { |
| 302 | #define dB2(x) ((x)*2) |
| 303 | |
| 304 | static double kltable[16] = { |
| 305 | dB2 (0.000), dB2 (9.000), dB2 (12.000), dB2 (13.875), dB2 (15.000), dB2 (16.125), dB2 (16.875), dB2 (17.625), |
| 306 | dB2 (18.000), dB2 (18.750), dB2 (19.125), dB2 (19.500), dB2 (19.875), dB2 (20.250), dB2 (20.625), dB2 (21.000) |
| 307 | }; |
| 308 | |
| 309 | e_int32 tmp; |
| 310 | e_int32 fnum, block, TL, KL; |
| 311 | |
| 312 | for (fnum = 0; fnum < 16; fnum++) |
| 313 | for (block = 0; block < 8; block++) |
| 314 | for (TL = 0; TL < 64; TL++) |
| 315 | for (KL = 0; KL < 4; KL++) |
| 316 | { |
| 317 | if(KL == 0) |
| 318 | { |
| 319 | tllTable[fnum][block][TL][KL] = TL2EG (TL); |
| 320 | } |
| 321 | else |
| 322 | { |
| 323 | tmp = (e_int32) (kltable[fnum] - dB2 (3.000) * (7 - block)); |
| 324 | if(tmp <= 0) |
| 325 | tllTable[fnum][block][TL][KL] = TL2EG (TL); |
| 326 | else |
| 327 | tllTable[fnum][block][TL][KL] = (e_uint32) ((tmp >> (3 - KL)) / EG_STEP) + TL2EG (TL); |
| 328 | } |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | #ifdef USE_SPEC_ENV_SPEED |
| 333 | static double attacktime[16][4] = { |
| 334 | {0, 0, 0, 0}, |
| 335 | {1730.15, 1400.60, 1153.43, 988.66}, |
| 336 | {865.08, 700.30, 576.72, 494.33}, |
| 337 | {432.54, 350.15, 288.36, 247.16}, |
| 338 | {216.27, 175.07, 144.18, 123.58}, |
| 339 | {108.13, 87.54, 72.09, 61.79}, |
| 340 | {54.07, 43.77, 36.04, 30.90}, |
| 341 | {27.03, 21.88, 18.02, 15.45}, |
| 342 | {13.52, 10.94, 9.01, 7.72}, |
| 343 | {6.76, 5.47, 4.51, 3.86}, |
| 344 | {3.38, 2.74, 2.25, 1.93}, |
| 345 | {1.69, 1.37, 1.13, 0.97}, |
| 346 | {0.84, 0.70, 0.60, 0.54}, |
| 347 | {0.50, 0.42, 0.34, 0.30}, |
| 348 | {0.28, 0.22, 0.18, 0.14}, |
| 349 | {0.00, 0.00, 0.00, 0.00} |
| 350 | }; |
| 351 | |
| 352 | static double decaytime[16][4] = { |
| 353 | {0, 0, 0, 0}, |
| 354 | {20926.60, 16807.20, 14006.00, 12028.60}, |
| 355 | {10463.30, 8403.58, 7002.98, 6014.32}, |
| 356 | {5231.64, 4201.79, 3501.49, 3007.16}, |
| 357 | {2615.82, 2100.89, 1750.75, 1503.58}, |
| 358 | {1307.91, 1050.45, 875.37, 751.79}, |
| 359 | {653.95, 525.22, 437.69, 375.90}, |
| 360 | {326.98, 262.61, 218.84, 187.95}, |
| 361 | {163.49, 131.31, 109.42, 93.97}, |
| 362 | {81.74, 65.65, 54.71, 46.99}, |
| 363 | {40.87, 32.83, 27.36, 23.49}, |
| 364 | {20.44, 16.41, 13.68, 11.75}, |
| 365 | {10.22, 8.21, 6.84, 5.87}, |
| 366 | {5.11, 4.10, 3.42, 2.94}, |
| 367 | {2.55, 2.05, 1.71, 1.47}, |
| 368 | {1.27, 1.27, 1.27, 1.27} |
| 369 | }; |
| 370 | #endif |
| 371 | |
| 372 | /* Rate Table for Attack */ |
| 373 | static void |
| 374 | makeDphaseARTable (void) |
| 375 | { |
| 376 | e_int32 AR, Rks, RM, RL; |
| 377 | #ifdef USE_SPEC_ENV_SPEED |
| 378 | e_uint32 attacktable[16][4]; |
| 379 | |
| 380 | for (RM = 0; RM < 16; RM++) |
| 381 | for (RL = 0; RL < 4; RL++) |
| 382 | { |
| 383 | if(RM == 0) |
| 384 | attacktable[RM][RL] = 0; |
| 385 | else if(RM == 15) |
| 386 | attacktable[RM][RL] = EG_DP_WIDTH; |
| 387 | else |
| 388 | attacktable[RM][RL] = (e_uint32) ((double) (1 << EG_DP_BITS) / (attacktime[RM][RL] * 3579545 / 72000)); |
| 389 | |
| 390 | } |
| 391 | #endif |
| 392 | |
| 393 | for (AR = 0; AR < 16; AR++) |
| 394 | for (Rks = 0; Rks < 16; Rks++) |
| 395 | { |
| 396 | RM = AR + (Rks >> 2); |
| 397 | RL = Rks & 3; |
| 398 | if(RM > 15) |
| 399 | RM = 15; |
| 400 | switch (AR) |
| 401 | { |
| 402 | case 0: |
| 403 | dphaseARTable[AR][Rks] = 0; |
| 404 | break; |
| 405 | case 15: |
| 406 | dphaseARTable[AR][Rks] = 0;/*EG_DP_WIDTH;*/ |
| 407 | break; |
| 408 | default: |
| 409 | #ifdef USE_SPEC_ENV_SPEED |
| 410 | dphaseARTable[AR][Rks] = rate_adjust (attacktable[RM][RL]); |
| 411 | #else |
| 412 | dphaseARTable[AR][Rks] = rate_adjust ((3 * (RL + 4) << (RM + 1))); |
| 413 | #endif |
| 414 | break; |
| 415 | } |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | /* Rate Table for Decay and Release */ |
| 420 | static void |
| 421 | makeDphaseDRTable (void) |
| 422 | { |
| 423 | e_int32 DR, Rks, RM, RL; |
| 424 | |
| 425 | #ifdef USE_SPEC_ENV_SPEED |
| 426 | e_uint32 decaytable[16][4]; |
| 427 | |
| 428 | for (RM = 0; RM < 16; RM++) |
| 429 | for (RL = 0; RL < 4; RL++) |
| 430 | if(RM == 0) |
| 431 | decaytable[RM][RL] = 0; |
| 432 | else |
| 433 | decaytable[RM][RL] = (e_uint32) ((double) (1 << EG_DP_BITS) / (decaytime[RM][RL] * 3579545 / 72000)); |
| 434 | #endif |
| 435 | |
| 436 | for (DR = 0; DR < 16; DR++) |
| 437 | for (Rks = 0; Rks < 16; Rks++) |
| 438 | { |
| 439 | RM = DR + (Rks >> 2); |
| 440 | RL = Rks & 3; |
| 441 | if(RM > 15) |
| 442 | RM = 15; |
| 443 | switch (DR) |
| 444 | { |
| 445 | case 0: |
| 446 | dphaseDRTable[DR][Rks] = 0; |
| 447 | break; |
| 448 | default: |
| 449 | #ifdef USE_SPEC_ENV_SPEED |
| 450 | dphaseDRTable[DR][Rks] = rate_adjust (decaytable[RM][RL]); |
| 451 | #else |
| 452 | dphaseDRTable[DR][Rks] = rate_adjust ((RL + 4) << (RM - 1)); |
| 453 | #endif |
| 454 | break; |
| 455 | } |
| 456 | } |
| 457 | } |
| 458 | |
| 459 | static void |
| 460 | makeRksTable (void) |
| 461 | { |
| 462 | |
| 463 | e_int32 fnum8, block, KR; |
| 464 | |
| 465 | for (fnum8 = 0; fnum8 < 2; fnum8++) |
| 466 | for (block = 0; block < 8; block++) |
| 467 | for (KR = 0; KR < 2; KR++) |
| 468 | { |
| 469 | if(KR != 0) |
| 470 | rksTable[fnum8][block][KR] = (block << 1) + fnum8; |
| 471 | else |
| 472 | rksTable[fnum8][block][KR] = block >> 1; |
| 473 | } |
| 474 | } |
| 475 | |
| 476 | /************************************************************ |
| 477 | |
| 478 | Calc Parameters |
| 479 | |
| 480 | ************************************************************/ |
| 481 | |
| 482 | INLINE static e_uint32 |
| 483 | calc_eg_dphase (OPLL_SLOT * slot) |
| 484 | { |
| 485 | |
| 486 | switch (slot->eg_mode) |
| 487 | { |
| 488 | case ATTACK: |
| 489 | return dphaseARTable[slot->patch.AR][slot->rks]; |
| 490 | |
| 491 | case DECAY: |
| 492 | return dphaseDRTable[slot->patch.DR][slot->rks]; |
| 493 | |
| 494 | case SUSHOLD: |
| 495 | return 0; |
| 496 | |
| 497 | case SUSTINE: |
| 498 | return dphaseDRTable[slot->patch.RR][slot->rks]; |
| 499 | |
| 500 | case RELEASE: |
| 501 | if(slot->sustine) |
| 502 | return dphaseDRTable[5][slot->rks]; |
| 503 | else if(slot->patch.EG) |
| 504 | return dphaseDRTable[slot->patch.RR][slot->rks]; |
| 505 | else |
| 506 | return dphaseDRTable[7][slot->rks]; |
| 507 | |
| 508 | case FINISH: |
| 509 | return 0; |
| 510 | |
| 511 | default: |
| 512 | return 0; |
| 513 | } |
| 514 | } |
| 515 | |
| 516 | /************************************************************* |
| 517 | |
| 518 | OPLL internal interfaces |
| 519 | |
| 520 | *************************************************************/ |
| 521 | |
| 522 | #define UPDATE_PG(S) (S)->dphase = dphaseTable[(S)->fnum][(S)->block][(S)->patch.ML] |
| 523 | #define UPDATE_TLL(S)\ |
| 524 | (((S)->type==0)?\ |
| 525 | ((S)->tll = tllTable[((S)->fnum)>>5][(S)->block][(S)->patch.TL][(S)->patch.KL]):\ |
| 526 | ((S)->tll = tllTable[((S)->fnum)>>5][(S)->block][(S)->volume][(S)->patch.KL])) |
| 527 | #define UPDATE_RKS(S) (S)->rks = rksTable[((S)->fnum)>>8][(S)->block][(S)->patch.KR] |
| 528 | #define UPDATE_WF(S) (S)->sintbl = waveform[(S)->patch.WF] |
| 529 | #define UPDATE_EG(S) (S)->eg_dphase = calc_eg_dphase(S) |
| 530 | #define UPDATE_ALL(S)\ |
| 531 | UPDATE_PG(S);\ |
| 532 | UPDATE_TLL(S);\ |
| 533 | UPDATE_RKS(S);\ |
| 534 | UPDATE_WF(S); \ |
| 535 | UPDATE_EG(S) /* EG should be updated last. */ |
| 536 | |
| 537 | |
| 538 | /* Slot key on */ |
| 539 | INLINE static void |
| 540 | slotOn (OPLL_SLOT * slot) |
| 541 | { |
| 542 | slot->eg_mode = ATTACK; |
| 543 | slot->eg_phase = 0; |
| 544 | slot->phase = 0; |
| 545 | } |
| 546 | |
| 547 | /* Slot key on without reseting the phase */ |
| 548 | INLINE static void |
| 549 | slotOn2 (OPLL_SLOT * slot) |
| 550 | { |
| 551 | slot->eg_mode = ATTACK; |
| 552 | slot->eg_phase = 0; |
| 553 | } |
| 554 | |
| 555 | /* Slot key off */ |
| 556 | INLINE static void |
| 557 | slotOff (OPLL_SLOT * slot) |
| 558 | { |
| 559 | if(slot->eg_mode == ATTACK) |
| 560 | slot->eg_phase = EXPAND_BITS (AR_ADJUST_TABLE[HIGHBITS (slot->eg_phase, EG_DP_BITS - EG_BITS)], EG_BITS, EG_DP_BITS); |
| 561 | slot->eg_mode = RELEASE; |
| 562 | } |
| 563 | |
| 564 | /* Channel key on */ |
| 565 | INLINE static void |
| 566 | keyOn (OPLL * opll, e_int32 i) |
| 567 | { |
| 568 | if(!opll->slot_on_flag[i * 2]) |
| 569 | slotOn (MOD(opll,i)); |
| 570 | if(!opll->slot_on_flag[i * 2 + 1]) |
| 571 | slotOn (CAR(opll,i)); |
| 572 | opll->key_status[i] = 1; |
| 573 | } |
| 574 | |
| 575 | /* Channel key off */ |
| 576 | INLINE static void |
| 577 | keyOff (OPLL * opll, e_int32 i) |
| 578 | { |
| 579 | if(opll->slot_on_flag[i * 2 + 1]) |
| 580 | slotOff (CAR(opll,i)); |
| 581 | opll->key_status[i] = 0; |
| 582 | } |
| 583 | |
| 584 | /* Set sustine parameter */ |
| 585 | INLINE static void |
| 586 | setSustine (OPLL * opll, e_int32 c, e_int32 sustine) |
| 587 | { |
| 588 | CAR(opll,c)->sustine = sustine; |
| 589 | if(MOD(opll,c)->type) |
| 590 | MOD(opll,c)->sustine = sustine; |
| 591 | } |
| 592 | |
| 593 | /* Volume : 6bit ( Volume register << 2 ) */ |
| 594 | INLINE static void |
| 595 | setVolume (OPLL * opll, e_int32 c, e_int32 volume) |
| 596 | { |
| 597 | CAR(opll,c)->volume = volume; |
| 598 | } |
| 599 | |
| 600 | INLINE static void |
| 601 | setSlotVolume (OPLL_SLOT * slot, e_int32 volume) |
| 602 | { |
| 603 | slot->volume = volume; |
| 604 | } |
| 605 | |
| 606 | /* Set F-Number ( fnum : 9bit ) */ |
| 607 | INLINE static void |
| 608 | setFnumber (OPLL * opll, e_int32 c, e_int32 fnum) |
| 609 | { |
| 610 | CAR(opll,c)->fnum = fnum; |
| 611 | MOD(opll,c)->fnum = fnum; |
| 612 | } |
| 613 | |
| 614 | /* Set Block data (block : 3bit ) */ |
| 615 | INLINE static void |
| 616 | setBlock (OPLL * opll, e_int32 c, e_int32 block) |
| 617 | { |
| 618 | CAR(opll,c)->block = block; |
| 619 | MOD(opll,c)->block = block; |
| 620 | } |
| 621 | |
| 622 | INLINE static void update_key_status (OPLL * opll) |
| 623 | { |
| 624 | int ch; |
| 625 | |
| 626 | for (ch = 0; ch < 6; ch++) |
| 627 | opll->slot_on_flag[ch * 2] = opll->slot_on_flag[ch * 2 + 1] = (opll->HiFreq[ch]) & 0x10; |
| 628 | } |
| 629 | |
| 630 | /*********************************************************** |
| 631 | |
| 632 | Initializing |
| 633 | |
| 634 | ***********************************************************/ |
| 635 | |
| 636 | static void |
| 637 | OPLL_SLOT_reset (OPLL_SLOT * slot, int type) |
| 638 | { |
| 639 | slot->type = type; |
| 640 | slot->sintbl = waveform[0]; |
| 641 | slot->phase = 0; |
| 642 | slot->dphase = 0; |
| 643 | slot->output[0] = 0; |
| 644 | slot->output[1] = 0; |
| 645 | slot->feedback = 0; |
| 646 | slot->eg_mode = SETTLE; |
| 647 | slot->eg_phase = EG_DP_WIDTH; |
| 648 | slot->eg_dphase = 0; |
| 649 | slot->rks = 0; |
| 650 | slot->tll = 0; |
| 651 | slot->sustine = 0; |
| 652 | slot->fnum = 0; |
| 653 | slot->block = 0; |
| 654 | slot->volume = 0; |
| 655 | slot->pgout = 0; |
| 656 | slot->egout = 0; |
| 657 | } |
| 658 | |
| 659 | static void |
| 660 | internal_refresh (void) |
| 661 | { |
| 662 | makeDphaseTable (); |
| 663 | makeDphaseARTable (); |
| 664 | makeDphaseDRTable (); |
| 665 | pm_dphase = (e_uint32) rate_adjust (PM_SPEED * PM_DP_WIDTH / (clk / 72)); |
| 666 | am_dphase = (e_uint32) rate_adjust (AM_SPEED * AM_DP_WIDTH / (clk / 72)); |
| 667 | } |
| 668 | |
| 669 | static void |
| 670 | maketables (e_uint32 c, e_uint32 r) |
| 671 | { |
| 672 | if(c != clk) |
| 673 | { |
| 674 | clk = c; |
| 675 | makePmTable (); |
| 676 | makeAmTable (); |
| 677 | makeDB2LinTable (); |
| 678 | makeAdjustTable (); |
| 679 | makeTllTable (); |
| 680 | makeRksTable (); |
| 681 | makeSinTable (); |
| 682 | //makeDefaultPatch (); |
| 683 | } |
| 684 | |
| 685 | if(r != rate) |
| 686 | { |
| 687 | rate = r; |
| 688 | internal_refresh (); |
| 689 | } |
| 690 | } |
| 691 | |
| 692 | OPLL *OPLL_new (e_uint32 clk, e_uint32 rate) |
| 693 | { |
| 694 | OPLL *opll; |
| 695 | |
| 696 | maketables (clk, rate); |
| 697 | |
| 698 | opll = (OPLL *) calloc (sizeof (OPLL), 1); |
| 699 | if(opll == NULL) |
| 700 | return NULL; |
| 701 | |
| 702 | opll->mask = 0; |
| 703 | |
| 704 | OPLL_reset (opll); |
| 705 | |
| 706 | return opll; |
| 707 | } |
| 708 | |
| 709 | |
| 710 | void |
| 711 | OPLL_delete (OPLL * opll) |
| 712 | { |
| 713 | free (opll); |
| 714 | } |
| 715 | |
| 716 | /* Reset whole of OPLL except patch datas. */ |
| 717 | void |
| 718 | OPLL_reset (OPLL * opll) |
| 719 | { |
| 720 | e_int32 i; |
| 721 | |
| 722 | if(!opll) |
| 723 | return; |
| 724 | |
| 725 | opll->adr = 0; |
| 726 | opll->out = 0; |
| 727 | |
| 728 | opll->pm_phase = 0; |
| 729 | opll->am_phase = 0; |
| 730 | |
| 731 | opll->mask = 0; |
| 732 | |
| 733 | for (i = 0; i < 12; i++) |
| 734 | OPLL_SLOT_reset(&opll->slot[i], i%2); |
| 735 | |
| 736 | for (i = 0; i < 6; i++) |
| 737 | { |
| 738 | opll->key_status[i] = 0; |
| 739 | //setPatch (opll, i, 0); |
| 740 | } |
| 741 | |
| 742 | for (i = 0; i < 0x40; i++) |
| 743 | OPLL_writeReg (opll, i, 0); |
| 744 | |
| 745 | #ifndef EMU2413_COMPACTION |
| 746 | opll->realstep = (e_uint32) ((1 << 31) / rate); |
| 747 | opll->opllstep = (e_uint32) ((1 << 31) / (clk / 72)); |
| 748 | opll->oplltime = 0; |
| 749 | #endif |
| 750 | } |
| 751 | |
| 752 | /* Force Refresh (When external program changes some parameters). */ |
| 753 | void |
| 754 | OPLL_forceRefresh (OPLL * opll) |
| 755 | { |
| 756 | e_int32 i; |
| 757 | |
| 758 | if(opll == NULL) |
| 759 | return; |
| 760 | |
| 761 | for (i = 0; i < 12; i++) |
| 762 | { |
| 763 | UPDATE_PG (&opll->slot[i]); |
| 764 | UPDATE_RKS (&opll->slot[i]); |
| 765 | UPDATE_TLL (&opll->slot[i]); |
| 766 | UPDATE_WF (&opll->slot[i]); |
| 767 | UPDATE_EG (&opll->slot[i]); |
| 768 | } |
| 769 | } |
| 770 | |
| 771 | void |
| 772 | OPLL_set_rate (OPLL * opll, e_uint32 r) |
| 773 | { |
| 774 | if(opll->quality) |
| 775 | rate = 49716; |
| 776 | else |
| 777 | rate = r; |
| 778 | internal_refresh (); |
| 779 | rate = r; |
| 780 | } |
| 781 | |
| 782 | void |
| 783 | OPLL_set_quality (OPLL * opll, e_uint32 q) |
| 784 | { |
| 785 | opll->quality = q; |
| 786 | OPLL_set_rate (opll, rate); |
| 787 | } |
| 788 | |
| 789 | /********************************************************* |
| 790 | |
| 791 | Generate wave data |
| 792 | |
| 793 | *********************************************************/ |
| 794 | /* Convert Amp(0 to EG_HEIGHT) to Phase(0 to 2PI). */ |
| 795 | #if( SLOT_AMP_BITS - PG_BITS ) > 0 |
| 796 | #define wave2_2pi(e) ( (e) >> ( SLOT_AMP_BITS - PG_BITS )) |
| 797 | #else |
| 798 | #define wave2_2pi(e) ( (e) << ( PG_BITS - SLOT_AMP_BITS )) |
| 799 | #endif |
| 800 | |
| 801 | /* Convert Amp(0 to EG_HEIGHT) to Phase(0 to 4PI). */ |
| 802 | #if( SLOT_AMP_BITS - PG_BITS - 1 ) == 0 |
| 803 | #define wave2_4pi(e) (e) |
| 804 | #elif( SLOT_AMP_BITS - PG_BITS - 1 ) > 0 |
| 805 | #define wave2_4pi(e) ( (e) >> ( SLOT_AMP_BITS - PG_BITS - 1 )) |
| 806 | #else |
| 807 | #define wave2_4pi(e) ( (e) << ( 1 + PG_BITS - SLOT_AMP_BITS )) |
| 808 | #endif |
| 809 | |
| 810 | /* Convert Amp(0 to EG_HEIGHT) to Phase(0 to 8PI). */ |
| 811 | #if( SLOT_AMP_BITS - PG_BITS - 2 ) == 0 |
| 812 | #define wave2_8pi(e) (e) |
| 813 | #elif( SLOT_AMP_BITS - PG_BITS - 2 ) > 0 |
| 814 | #define wave2_8pi(e) ( (e) >> ( SLOT_AMP_BITS - PG_BITS - 2 )) |
| 815 | #else |
| 816 | #define wave2_8pi(e) ( (e) << ( 2 + PG_BITS - SLOT_AMP_BITS )) |
| 817 | #endif |
| 818 | |
| 819 | |
| 820 | |
| 821 | /* Update AM, PM unit */ |
| 822 | static void |
| 823 | update_ampm (OPLL * opll) |
| 824 | { |
| 825 | opll->pm_phase = (opll->pm_phase + pm_dphase) & (PM_DP_WIDTH - 1); |
| 826 | opll->am_phase = (opll->am_phase + am_dphase) & (AM_DP_WIDTH - 1); |
| 827 | opll->lfo_am = amtable[HIGHBITS (opll->am_phase, AM_DP_BITS - AM_PG_BITS)]; |
| 828 | opll->lfo_pm = pmtable[HIGHBITS (opll->pm_phase, PM_DP_BITS - PM_PG_BITS)]; |
| 829 | } |
| 830 | |
| 831 | /* PG */ |
| 832 | INLINE static void |
| 833 | calc_phase (OPLL_SLOT * slot, e_int32 lfo) |
| 834 | { |
| 835 | if(slot->patch.PM) |
| 836 | slot->phase += (slot->dphase * lfo) >> PM_AMP_BITS; |
| 837 | else |
| 838 | slot->phase += slot->dphase; |
| 839 | |
| 840 | slot->phase &= (DP_WIDTH - 1); |
| 841 | |
| 842 | slot->pgout = HIGHBITS (slot->phase, DP_BASE_BITS); |
| 843 | } |
| 844 | |
| 845 | /* EG */ |
| 846 | static void |
| 847 | calc_envelope (OPLL_SLOT * slot, e_int32 lfo) |
| 848 | { |
| 849 | #define S2E(x) (SL2EG((e_int32)(x/SL_STEP))<<(EG_DP_BITS-EG_BITS)) |
| 850 | |
| 851 | static e_uint32 SL[16] = { |
| 852 | S2E (0.0), S2E (3.0), S2E (6.0), S2E (9.0), S2E (12.0), S2E (15.0), S2E (18.0), S2E (21.0), |
| 853 | S2E (24.0), S2E (27.0), S2E (30.0), S2E (33.0), S2E (36.0), S2E (39.0), S2E (42.0), S2E (48.0) |
| 854 | }; |
| 855 | |
| 856 | e_uint32 egout; |
| 857 | |
| 858 | switch (slot->eg_mode) |
| 859 | { |
| 860 | |
| 861 | case ATTACK: |
| 862 | egout = AR_ADJUST_TABLE[HIGHBITS (slot->eg_phase, EG_DP_BITS - EG_BITS)]; |
| 863 | slot->eg_phase += slot->eg_dphase; |
| 864 | if((EG_DP_WIDTH & slot->eg_phase)||(slot->patch.AR==15)) |
| 865 | { |
| 866 | egout = 0; |
| 867 | slot->eg_phase = 0; |
| 868 | slot->eg_mode = DECAY; |
| 869 | UPDATE_EG (slot); |
| 870 | } |
| 871 | break; |
| 872 | |
| 873 | case DECAY: |
| 874 | egout = HIGHBITS (slot->eg_phase, EG_DP_BITS - EG_BITS); |
| 875 | slot->eg_phase += slot->eg_dphase; |
| 876 | if(slot->eg_phase >= SL[slot->patch.SL]) |
| 877 | { |
| 878 | if(slot->patch.EG) |
| 879 | { |
| 880 | slot->eg_phase = SL[slot->patch.SL]; |
| 881 | slot->eg_mode = SUSHOLD; |
| 882 | UPDATE_EG (slot); |
| 883 | } |
| 884 | else |
| 885 | { |
| 886 | slot->eg_phase = SL[slot->patch.SL]; |
| 887 | slot->eg_mode = SUSTINE; |
| 888 | UPDATE_EG (slot); |
| 889 | } |
| 890 | } |
| 891 | break; |
| 892 | |
| 893 | case SUSHOLD: |
| 894 | egout = HIGHBITS (slot->eg_phase, EG_DP_BITS - EG_BITS); |
| 895 | if(slot->patch.EG == 0) |
| 896 | { |
| 897 | slot->eg_mode = SUSTINE; |
| 898 | UPDATE_EG (slot); |
| 899 | } |
| 900 | break; |
| 901 | |
| 902 | case SUSTINE: |
| 903 | case RELEASE: |
| 904 | egout = HIGHBITS (slot->eg_phase, EG_DP_BITS - EG_BITS); |
| 905 | slot->eg_phase += slot->eg_dphase; |
| 906 | if(egout >= (1 << EG_BITS)) |
| 907 | { |
| 908 | slot->eg_mode = FINISH; |
| 909 | egout = (1 << EG_BITS) - 1; |
| 910 | } |
| 911 | break; |
| 912 | |
| 913 | case FINISH: |
| 914 | egout = (1 << EG_BITS) - 1; |
| 915 | break; |
| 916 | |
| 917 | default: |
| 918 | egout = (1 << EG_BITS) - 1; |
| 919 | break; |
| 920 | } |
| 921 | |
| 922 | if(slot->patch.AM) |
| 923 | egout = EG2DB (egout + slot->tll) + lfo; |
| 924 | else |
| 925 | egout = EG2DB (egout + slot->tll); |
| 926 | |
| 927 | if(egout >= DB_MUTE) |
| 928 | egout = DB_MUTE - 1; |
| 929 | |
| 930 | slot->egout = egout; |
| 931 | } |
| 932 | |
| 933 | /* CARRIOR */ |
| 934 | INLINE static e_int32 |
| 935 | calc_slot_car (OPLL_SLOT * slot, e_int32 fm) |
| 936 | { |
| 937 | slot->output[1] = slot->output[0]; |
| 938 | |
| 939 | if(slot->egout >= (DB_MUTE - 1)) |
| 940 | { |
| 941 | slot->output[0] = 0; |
| 942 | } |
| 943 | else |
| 944 | { |
| 945 | slot->output[0] = DB2LIN_TABLE[slot->sintbl[(slot->pgout+wave2_8pi(fm))&(PG_WIDTH-1)] + slot->egout]; |
| 946 | } |
| 947 | |
| 948 | return (slot->output[1] + slot->output[0]) >> 1; |
| 949 | } |
| 950 | |
| 951 | /* MODULATOR */ |
| 952 | INLINE static e_int32 |
| 953 | calc_slot_mod (OPLL_SLOT * slot) |
| 954 | { |
| 955 | e_int32 fm; |
| 956 | |
| 957 | slot->output[1] = slot->output[0]; |
| 958 | |
| 959 | if(slot->egout >= (DB_MUTE - 1)) |
| 960 | { |
| 961 | slot->output[0] = 0; |
| 962 | } |
| 963 | else if(slot->patch.FB != 0) |
| 964 | { |
| 965 | fm = wave2_4pi (slot->feedback) >> (7 - slot->patch.FB); |
| 966 | slot->output[0] = DB2LIN_TABLE[slot->sintbl[(slot->pgout + fm)&(PG_WIDTH-1)] + slot->egout]; |
| 967 | } |
| 968 | else |
| 969 | { |
| 970 | slot->output[0] = DB2LIN_TABLE[slot->sintbl[slot->pgout] + slot->egout]; |
| 971 | } |
| 972 | |
| 973 | slot->feedback = (slot->output[1] + slot->output[0]) >> 1; |
| 974 | |
| 975 | return slot->feedback; |
| 976 | |
| 977 | } |
| 978 | |
| 979 | static INLINE e_int16 calc (OPLL * opll) |
| 980 | { |
| 981 | e_int32 inst = 0, out = 0; |
| 982 | e_int32 i; |
| 983 | |
| 984 | update_ampm (opll); |
| 985 | |
| 986 | for (i = 0; i < 12; i++) |
| 987 | { |
| 988 | calc_phase(&opll->slot[i],opll->lfo_pm); |
| 989 | calc_envelope(&opll->slot[i],opll->lfo_am); |
| 990 | } |
| 991 | |
| 992 | for (i = 0; i < 6; i++) |
| 993 | if(!(opll->mask & OPLL_MASK_CH (i)) && (CAR(opll,i)->eg_mode != FINISH)) |
| 994 | inst += calc_slot_car (CAR(opll,i), calc_slot_mod(MOD(opll,i))); |
| 995 | |
| 996 | out = inst; |
| 997 | return (e_int16) out; |
| 998 | } |
| 999 | |
| 1000 | void moocow(OPLL* opll, e_int32 *buf, e_int32 len, int shift) |
| 1001 | { |
| 1002 | while(len > 0) |
| 1003 | { |
| 1004 | *buf+=(calc(opll)+32768)<<shift; |
| 1005 | buf++; |
| 1006 | len--; |
| 1007 | } |
| 1008 | } |
| 1009 | |
| 1010 | #ifdef EMU2413_COMPACTION |
| 1011 | e_int16 |
| 1012 | OPLL_calc (OPLL * opll) |
| 1013 | { |
| 1014 | return calc (opll); |
| 1015 | } |
| 1016 | #else |
| 1017 | e_int16 |
| 1018 | OPLL_calc (OPLL * opll) |
| 1019 | { |
| 1020 | if(!opll->quality) |
| 1021 | return calc (opll); |
| 1022 | |
| 1023 | while (opll->realstep > opll->oplltime) |
| 1024 | { |
| 1025 | opll->oplltime += opll->opllstep; |
| 1026 | opll->prev = opll->next; |
| 1027 | opll->next = calc (opll); |
| 1028 | } |
| 1029 | |
| 1030 | opll->oplltime -= opll->realstep; |
| 1031 | opll->out = (e_int16) (((double) opll->next * (opll->opllstep - opll->oplltime) |
| 1032 | + (double) opll->prev * opll->oplltime) / opll->opllstep); |
| 1033 | |
| 1034 | return (e_int16) opll->out; |
| 1035 | } |
| 1036 | #endif |
| 1037 | |
| 1038 | e_uint32 |
| 1039 | OPLL_setMask (OPLL * opll, e_uint32 mask) |
| 1040 | { |
| 1041 | e_uint32 ret; |
| 1042 | |
| 1043 | if(opll) |
| 1044 | { |
| 1045 | ret = opll->mask; |
| 1046 | opll->mask = mask; |
| 1047 | return ret; |
| 1048 | } |
| 1049 | else |
| 1050 | return 0; |
| 1051 | } |
| 1052 | |
| 1053 | e_uint32 |
| 1054 | OPLL_toggleMask (OPLL * opll, e_uint32 mask) |
| 1055 | { |
| 1056 | e_uint32 ret; |
| 1057 | |
| 1058 | if(opll) |
| 1059 | { |
| 1060 | ret = opll->mask; |
| 1061 | opll->mask ^= mask; |
| 1062 | return ret; |
| 1063 | } |
| 1064 | else |
| 1065 | return 0; |
| 1066 | } |
| 1067 | |
| 1068 | /**************************************************** |
| 1069 | |
| 1070 | I/O Ctrl |
| 1071 | |
| 1072 | *****************************************************/ |
| 1073 | |
| 1074 | static void setInstrument(OPLL * opll, e_uint i, e_uint inst) |
| 1075 | { |
| 1076 | const e_uint8 *src; |
| 1077 | OPLL_PATCH *modp, *carp; |
| 1078 | |
| 1079 | opll->patch_number[i]=inst; |
| 1080 | |
| 1081 | if(inst) |
| 1082 | src=default_inst[inst-1]; |
| 1083 | else |
| 1084 | src=opll->CustInst; |
| 1085 | |
| 1086 | modp=&MOD(opll,i)->patch; |
| 1087 | carp=&CAR(opll,i)->patch; |
| 1088 | |
| 1089 | modp->AM=(src[0]>>7)&1; |
| 1090 | modp->PM=(src[0]>>6)&1; |
| 1091 | modp->EG=(src[0]>>5)&1; |
| 1092 | modp->KR=(src[0]>>4)&1; |
| 1093 | modp->ML=(src[0]&0xF); |
| 1094 | |
| 1095 | carp->AM=(src[1]>>7)&1; |
| 1096 | carp->PM=(src[1]>>6)&1; |
| 1097 | carp->EG=(src[1]>>5)&1; |
| 1098 | carp->KR=(src[1]>>4)&1; |
| 1099 | carp->ML=(src[1]&0xF); |
| 1100 | |
| 1101 | modp->KL=(src[2]>>6)&3; |
| 1102 | modp->TL=(src[2]&0x3F); |
| 1103 | |
| 1104 | carp->KL = (src[3] >> 6) & 3; |
| 1105 | carp->WF = (src[3] >> 4) & 1; |
| 1106 | |
| 1107 | modp->WF = (src[3] >> 3) & 1; |
| 1108 | |
| 1109 | modp->FB = (src[3]) & 7; |
| 1110 | |
| 1111 | modp->AR = (src[4]>>4)&0xF; |
| 1112 | modp->DR = (src[4]&0xF); |
| 1113 | |
| 1114 | carp->AR = (src[5]>>4)&0xF; |
| 1115 | carp->DR = (src[5]&0xF); |
| 1116 | |
| 1117 | modp->SL = (src[6]>>4)&0xF; |
| 1118 | modp->RR = (src[6]&0xF); |
| 1119 | |
| 1120 | carp->SL = (src[7]>>4)&0xF; |
| 1121 | carp->RR = (src[7]&0xF); |
| 1122 | } |
| 1123 | |
| 1124 | |
| 1125 | void |
| 1126 | OPLL_writeReg (OPLL * opll, e_uint32 reg, e_uint32 data) |
| 1127 | { |
| 1128 | |
| 1129 | e_int32 i, v, ch; |
| 1130 | |
| 1131 | data = data & 0xff; |
| 1132 | reg = reg & 0x3f; |
| 1133 | |
| 1134 | switch (reg) |
| 1135 | { |
| 1136 | case 0x00: |
| 1137 | opll->CustInst[0]=data; |
| 1138 | for (i = 0; i < 6; i++) |
| 1139 | { |
| 1140 | if(opll->patch_number[i] == 0) |
| 1141 | { |
| 1142 | setInstrument(opll, i, 0); |
| 1143 | UPDATE_PG (MOD(opll,i)); |
| 1144 | UPDATE_RKS (MOD(opll,i)); |
| 1145 | UPDATE_EG (MOD(opll,i)); |
| 1146 | } |
| 1147 | } |
| 1148 | break; |
| 1149 | |
| 1150 | case 0x01: |
| 1151 | opll->CustInst[1]=data; |
| 1152 | for (i = 0; i < 6; i++) |
| 1153 | { |
| 1154 | if(opll->patch_number[i] == 0) |
| 1155 | { |
| 1156 | setInstrument(opll, i, 0); |
| 1157 | UPDATE_PG (CAR(opll,i)); |
| 1158 | UPDATE_RKS (CAR(opll,i)); |
| 1159 | UPDATE_EG (CAR(opll,i)); |
| 1160 | } |
| 1161 | } |
| 1162 | break; |
| 1163 | |
| 1164 | case 0x02: |
| 1165 | opll->CustInst[2]=data; |
| 1166 | for (i = 0; i < 6; i++) |
| 1167 | { |
| 1168 | if(opll->patch_number[i] == 0) |
| 1169 | { |
| 1170 | setInstrument(opll, i, 0); |
| 1171 | UPDATE_TLL(MOD(opll,i)); |
| 1172 | } |
| 1173 | } |
| 1174 | break; |
| 1175 | |
| 1176 | case 0x03: |
| 1177 | opll->CustInst[3]=data; |
| 1178 | for (i = 0; i < 6; i++) |
| 1179 | { |
| 1180 | if(opll->patch_number[i] == 0) |
| 1181 | { |
| 1182 | setInstrument(opll, i, 0); |
| 1183 | UPDATE_WF(MOD(opll,i)); |
| 1184 | UPDATE_WF(CAR(opll,i)); |
| 1185 | } |
| 1186 | } |
| 1187 | break; |
| 1188 | |
| 1189 | case 0x04: |
| 1190 | opll->CustInst[4]=data; |
| 1191 | for (i = 0; i < 6; i++) |
| 1192 | { |
| 1193 | if(opll->patch_number[i] == 0) |
| 1194 | { |
| 1195 | setInstrument(opll, i, 0); |
| 1196 | UPDATE_EG (MOD(opll,i)); |
| 1197 | } |
| 1198 | } |
| 1199 | break; |
| 1200 | |
| 1201 | case 0x05: |
| 1202 | opll->CustInst[5]=data; |
| 1203 | for (i = 0; i < 6; i++) |
| 1204 | { |
| 1205 | if(opll->patch_number[i] == 0) |
| 1206 | { |
| 1207 | setInstrument(opll, i, 0); |
| 1208 | UPDATE_EG(CAR(opll,i)); |
| 1209 | } |
| 1210 | } |
| 1211 | break; |
| 1212 | |
| 1213 | case 0x06: |
| 1214 | opll->CustInst[6]=data; |
| 1215 | for (i = 0; i < 6; i++) |
| 1216 | { |
| 1217 | if(opll->patch_number[i] == 0) |
| 1218 | { |
| 1219 | setInstrument(opll, i, 0); |
| 1220 | UPDATE_EG (MOD(opll,i)); |
| 1221 | } |
| 1222 | } |
| 1223 | break; |
| 1224 | |
| 1225 | case 0x07: |
| 1226 | opll->CustInst[7]=data; |
| 1227 | for (i = 0; i < 6; i++) |
| 1228 | { |
| 1229 | if(opll->patch_number[i] == 0) |
| 1230 | { |
| 1231 | setInstrument(opll, i, 0); |
| 1232 | UPDATE_EG (CAR(opll,i)); |
| 1233 | } |
| 1234 | } |
| 1235 | break; |
| 1236 | |
| 1237 | case 0x10: |
| 1238 | case 0x11: |
| 1239 | case 0x12: |
| 1240 | case 0x13: |
| 1241 | case 0x14: |
| 1242 | case 0x15: |
| 1243 | ch = reg - 0x10; |
| 1244 | opll->LowFreq[ch]=data; |
| 1245 | setFnumber (opll, ch, data + ((opll->HiFreq[ch] & 1) << 8)); |
| 1246 | UPDATE_ALL (MOD(opll,ch)); |
| 1247 | UPDATE_ALL (CAR(opll,ch)); |
| 1248 | break; |
| 1249 | |
| 1250 | case 0x20: |
| 1251 | case 0x21: |
| 1252 | case 0x22: |
| 1253 | case 0x23: |
| 1254 | case 0x24: |
| 1255 | case 0x25: |
| 1256 | ch = reg - 0x20; |
| 1257 | opll->HiFreq[ch]=data; |
| 1258 | |
| 1259 | setFnumber (opll, ch, ((data & 1) << 8) + opll->LowFreq[ch]); |
| 1260 | setBlock (opll, ch, (data >> 1) & 7); |
| 1261 | setSustine (opll, ch, (data >> 5) & 1); |
| 1262 | if(data & 0x10) |
| 1263 | keyOn (opll, ch); |
| 1264 | else |
| 1265 | keyOff (opll, ch); |
| 1266 | UPDATE_ALL (MOD(opll,ch)); |
| 1267 | UPDATE_ALL (CAR(opll,ch)); |
| 1268 | update_key_status (opll); |
| 1269 | break; |
| 1270 | |
| 1271 | case 0x30: |
| 1272 | case 0x31: |
| 1273 | case 0x32: |
| 1274 | case 0x33: |
| 1275 | case 0x34: |
| 1276 | case 0x35: |
| 1277 | opll->InstVol[reg-0x30]=data; |
| 1278 | i = (data >> 4) & 15; |
| 1279 | v = data & 15; |
| 1280 | setInstrument(opll, reg-0x30, i); |
| 1281 | setVolume (opll, reg - 0x30, v << 2); |
| 1282 | UPDATE_ALL (MOD(opll,reg - 0x30)); |
| 1283 | UPDATE_ALL (CAR(opll,reg - 0x30)); |
| 1284 | break; |
| 1285 | |
| 1286 | default: |
| 1287 | break; |
| 1288 | |
| 1289 | } |
| 1290 | } |
| 1291 | |
| 1292 | void |
| 1293 | OPLL_writeIO (OPLL * opll, e_uint32 adr, e_uint32 val) |
| 1294 | { |
| 1295 | if(adr & 1) |
| 1296 | OPLL_writeReg (opll, opll->adr, val); |
| 1297 | else |
| 1298 | opll->adr = val; |
| 1299 | } |
| 1300 | |