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standalone: allow scaler to cut off the letterbox
[pcsx_rearmed.git] / plugins / dfsound / registers.c
CommitLineData
ef79bbde
P		 1/***************************************************************************\r
2 registers.c - description\r
3 -------------------\r
4 begin : Wed May 15 2002\r
5 copyright : (C) 2002 by Pete Bernert\r
6 email : BlackDove@addcom.de\r
7 ***************************************************************************/\r
8/***************************************************************************\r
9 * *\r
10 * This program is free software; you can redistribute it and/or modify *\r
11 * it under the terms of the GNU General Public License as published by *\r
12 * the Free Software Foundation; either version 2 of the License, or *\r
13 * (at your option) any later version. See also the license.txt file for *\r
14 * additional informations. *\r
15 * *\r
16 ***************************************************************************/\r
17\r
18#include "stdafx.h"\r
19\r
20#define _IN_REGISTERS\r
21\r
22#include "externals.h"\r
23#include "registers.h"\r
3154bfab 24#include "spu_config.h"\r
b71a957f 25#include "spu.h"\r
ef79bbde 26\r
7e44d49d 27static void SoundOn(int start,int end,unsigned short val);\r
28static void SoundOff(int start,int end,unsigned short val);\r
29static void FModOn(int start,int end,unsigned short val);\r
30static void NoiseOn(int start,int end,unsigned short val);\r
31static void SetVolumeL(unsigned char ch,short vol);\r
32static void SetVolumeR(unsigned char ch,short vol);\r
33static void SetPitch(int ch,unsigned short val);\r
34static void ReverbOn(int start,int end,unsigned short val);\r
35\r
ef79bbde
P		 36////////////////////////////////////////////////////////////////////////\r
37// WRITE REGISTERS: called by main emu\r
38////////////////////////////////////////////////////////////////////////\r
39\r
3fc2a418 40static const uint32_t ignore_dupe[16] = {\r
650adfd2 41 // ch 0-15 c40 c80 cc0\r
42 0x7f7f7f7f, 0x7f7f7f7f, 0x7f7f7f7f, 0x7f7f7f7f,\r
43 // ch 16-24 d40 control reverb\r
3fc2a418 44 0x7f7f7f7f, 0x7f7f7f7f, 0xff05ff0f, 0xffffffff,\r
45 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff,\r
46 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff\r
650adfd2 47};\r
48\r
49void CALLBACK SPUwriteRegister(unsigned long reg, unsigned short val,\r
50 unsigned int cycles)\r
ef79bbde 51{\r
3fc2a418 52 int r = reg & 0xffe;\r
650adfd2 53 int rofs = (r - 0xc00) >> 1;\r
3154bfab 54 int changed = spu.regArea[rofs] != val;\r
55 spu.regArea[rofs] = val;\r
650adfd2 56\r
57 if (!changed && (ignore_dupe[rofs >> 5] & (1 << (rofs & 0x1f))))\r
58 return;\r
59 // zero keyon/keyoff?\r
60 if (val == 0 && (r & 0xff8) == 0xd88)\r
61 return;\r
62\r
6183ddf9 63 do_samples_if_needed(cycles, 0, 16);\r
ef79bbde
P		 64\r
65 if(r>=0x0c00 && r<0x0d80) // some channel info?\r
66 {\r
67 int ch=(r>>4)-0xc0; // calc channel\r
68 switch(r&0x0f)\r
69 {\r
70 //------------------------------------------------// r volume\r
71 case 0: \r
72 SetVolumeL((unsigned char)ch,val);\r
73 break;\r
74 //------------------------------------------------// l volume\r
75 case 2: \r
76 SetVolumeR((unsigned char)ch,val);\r
77 break;\r
78 //------------------------------------------------// pitch\r
79 case 4: \r
80 SetPitch(ch,val);\r
650adfd2 81 goto upd_irq;\r
ef79bbde
P		 82 //------------------------------------------------// start\r
83 case 6: \r
7e44d49d 84 // taken from regArea later\r
ef79bbde
P		 85 break;\r
86 //------------------------------------------------// level with pre-calcs\r
87 case 8:\r
88 {\r
6d866bb7 89 const unsigned long lval=val;\r
ef79bbde 90 //---------------------------------------------//\r
5514a050 91 spu.s_chan[ch].ADSRX.AttackModeExp=(lval&0x8000)?1:0;\r
92 spu.s_chan[ch].ADSRX.AttackRate=(lval>>8) & 0x007f;\r
93 spu.s_chan[ch].ADSRX.DecayRate=(lval>>4) & 0x000f;\r
94 spu.s_chan[ch].ADSRX.SustainLevel=lval & 0x000f;\r
ef79bbde 95 //---------------------------------------------//\r
ef79bbde
P		 96 }\r
97 break;\r
98 //------------------------------------------------// adsr times with pre-calcs\r
99 case 10:\r
100 {\r
6d866bb7 101 const unsigned long lval=val;\r
ef79bbde
P		 102\r
103 //----------------------------------------------//\r
5514a050 104 spu.s_chan[ch].ADSRX.SustainModeExp = (lval&0x8000)?1:0;\r
105 spu.s_chan[ch].ADSRX.SustainIncrease= (lval&0x4000)?0:1;\r
106 spu.s_chan[ch].ADSRX.SustainRate = (lval>>6) & 0x007f;\r
107 spu.s_chan[ch].ADSRX.ReleaseModeExp = (lval&0x0020)?1:0;\r
108 spu.s_chan[ch].ADSRX.ReleaseRate = lval & 0x001f;\r
ef79bbde 109 //----------------------------------------------//\r
ef79bbde
P		 110 }\r
111 break;\r
112 //------------------------------------------------// adsr volume... mmm have to investigate this\r
113 case 12:\r
114 break;\r
115 //------------------------------------------------//\r
116 case 14: // loop?\r
5514a050 117 spu.s_chan[ch].pLoop=spu.spuMemC+((val&~1)<<3);\r
9601ca6d 118 spu.s_chan[ch].bIgnoreLoop = 1;\r
650adfd2 119 goto upd_irq;\r
ef79bbde
P		 120 //------------------------------------------------//\r
121 }\r
ef79bbde
P		 122 return;\r
123 }\r
3fc2a418 124 else if (0x0e00 <= r && r < 0x0e60)\r
125 {\r
126 int ch = (r >> 2) & 0x1f;\r
127 log_unhandled("c%02d w %cvol %04x\n", ch, (r & 2) ? 'r' : 'l', val);\r
128 spu.s_chan[ch].iVolume[(r >> 1) & 1] = (signed short)val >> 1;\r
129 }\r
ef79bbde
P		 130\r
131 switch(r)\r
132 {\r
133 //-------------------------------------------------//\r
134 case H_SPUaddr:\r
5fa59798 135 spu.spuAddr = (unsigned int)val << 3;\r
56e500f3 136 //check_irq_io(spu.spuAddr);\r
ef79bbde
P		 137 break;\r
138 //-------------------------------------------------//\r
139 case H_SPUdata:\r
b71a957f 140 *(unsigned short *)(spu.spuMemC + spu.spuAddr) = HTOLE16(val);\r
5514a050 141 spu.spuAddr += 2;\r
142 spu.spuAddr &= 0x7fffe;\r
56e500f3 143 check_irq_io(spu.spuAddr);\r
ef79bbde
P		 144 break;\r
145 //-------------------------------------------------//\r
146 case H_SPUctrl:\r
6109649c 147 spu.spuStat = (spu.spuStat & ~0x3f) | (val & 0x3f);\r
5fa59798 148 spu.spuStat &= ~STAT_IRQ | val;\r
3154bfab 149 if (!(spu.spuCtrl & CTRL_IRQ)) {\r
650adfd2 150 if (val & CTRL_IRQ)\r
151 schedule_next_irq();\r
152 }\r
3154bfab 153 spu.spuCtrl=val;\r
ef79bbde
P		 154 break;\r
155 //-------------------------------------------------//\r
156 case H_SPUstat:\r
5fa59798 157 //spu.spuStat=val&0xf800;\r
ef79bbde
P		 158 break;\r
159 //-------------------------------------------------//\r
160 case H_SPUReverbAddr:\r
650adfd2 161 goto rvbd;\r
ef79bbde
P		 162 //-------------------------------------------------//\r
163 case H_SPUirqAddr:\r
54604e03 164 //if (val & 1)\r
165 // log_unhandled("w irq with lsb: %08lx %04x\n", reg, val);\r
56e500f3 166 spu.pSpuIrq = spu.spuMemC + (((int)val << 3) & ~0xf);\r
167 //check_irq_io(spu.spuAddr);\r
650adfd2 168 goto upd_irq;\r
ef79bbde
P		 169 //-------------------------------------------------//\r
170 case H_SPUrvolL:\r
986293e0 171 spu.rvb->VolLeft = (int16_t)val;\r
ef79bbde
P		 172 break;\r
173 //-------------------------------------------------//\r
174 case H_SPUrvolR:\r
986293e0 175 spu.rvb->VolRight = (int16_t)val;\r
ef79bbde
P		 176 break;\r
177 //-------------------------------------------------//\r
178\r
7df2c03c 179 case H_SPUmvolL:\r
180 case H_SPUmvolR:\r
181 if (val & 0x8000)\r
182 log_unhandled("w master sweep: %08lx %04x\n", reg, val);\r
183 break;\r
184\r
185 case 0x0dac:\r
186 if (val != 4)\r
187 log_unhandled("1f801dac %04x\n", val);\r
188 break;\r
189\r
ef79bbde
P		 190/*\r
191 case H_ExtLeft:\r
192 //auxprintf("EL %d\n",val);\r
193 break;\r
194 //-------------------------------------------------//\r
195 case H_ExtRight:\r
196 //auxprintf("ER %d\n",val);\r
197 break;\r
198 //-------------------------------------------------//\r
199 case H_SPUmvolL:\r
200 //auxprintf("ML %d\n",val);\r
201 break;\r
202 //-------------------------------------------------//\r
203 case H_SPUmvolR:\r
204 //auxprintf("MR %d\n",val);\r
205 break;\r
206 //-------------------------------------------------//\r
207 case H_SPUMute1:\r
208 //auxprintf("M0 %04x\n",val);\r
209 break;\r
210 //-------------------------------------------------//\r
211 case H_SPUMute2:\r
212 //auxprintf("M1 %04x\n",val);\r
213 break;\r
214*/\r
215 //-------------------------------------------------//\r
216 case H_SPUon1:\r
fcb93a4f 217 spu.last_keyon_cycles = cycles;\r
6183ddf9 218 do_samples_if_needed(cycles, 0, 2);\r
ef79bbde
P		 219 SoundOn(0,16,val);\r
220 break;\r
221 //-------------------------------------------------//\r
6183ddf9 222 case H_SPUon2:\r
fcb93a4f 223 spu.last_keyon_cycles = cycles;\r
6183ddf9 224 do_samples_if_needed(cycles, 0, 2);\r
ef79bbde
P		 225 SoundOn(16,24,val);\r
226 break;\r
227 //-------------------------------------------------//\r
228 case H_SPUoff1:\r
fcb93a4f 229 if (cycles - spu.last_keyon_cycles < 786u) {\r
230 if (val & regAreaGet(H_SPUon1))\r
231 log_unhandled("koff1 %04x %d\n", val, cycles - spu.last_keyon_cycles);\r
232 val &= ~regAreaGet(H_SPUon1);\r
233 }\r
df5f713b 234 do_samples_if_needed(cycles, 0, 2);\r
ef79bbde
P		 235 SoundOff(0,16,val);\r
236 break;\r
237 //-------------------------------------------------//\r
238 case H_SPUoff2:\r
fcb93a4f 239 if (cycles - spu.last_keyon_cycles < 786u) {\r
240 if (val & regAreaGet(H_SPUon1))\r
241 log_unhandled("koff2 %04x %d\n", val, cycles - spu.last_keyon_cycles);\r
242 val &= ~regAreaGet(H_SPUon2);\r
243 }\r
df5f713b 244 do_samples_if_needed(cycles, 0, 2);\r
ef79bbde
P		 245 SoundOff(16,24,val);\r
246 break;\r
247 //-------------------------------------------------//\r
248 case H_CDLeft:\r
7d6997de 249 spu.iLeftXAVol=(int16_t)val;\r
60073003 250 //if(spu.cddavCallback) spu.cddavCallback(0,(int16_t)val);\r
ef79bbde
P		 251 break;\r
252 case H_CDRight:\r
7d6997de 253 spu.iRightXAVol=(int16_t)val;\r
60073003 254 //if(spu.cddavCallback) spu.cddavCallback(1,(int16_t)val);\r
ef79bbde
P		 255 break;\r
256 //-------------------------------------------------//\r
257 case H_FMod1:\r
258 FModOn(0,16,val);\r
259 break;\r
260 //-------------------------------------------------//\r
261 case H_FMod2:\r
262 FModOn(16,24,val);\r
263 break;\r
264 //-------------------------------------------------//\r
265 case H_Noise1:\r
266 NoiseOn(0,16,val);\r
267 break;\r
268 //-------------------------------------------------//\r
269 case H_Noise2:\r
270 NoiseOn(16,24,val);\r
271 break;\r
272 //-------------------------------------------------//\r
273 case H_RVBon1:\r
274 ReverbOn(0,16,val);\r
275 break;\r
276 //-------------------------------------------------//\r
277 case H_RVBon2:\r
278 ReverbOn(16,24,val);\r
279 break;\r
280 //-------------------------------------------------//\r
7b2c4897 281 case H_Reverb+0 : goto rvbd;\r
282 case H_Reverb+2 : goto rvbd;\r
283 case H_Reverb+4 : spu.rvb->IIR_ALPHA=(short)val; break;\r
284 case H_Reverb+6 : spu.rvb->ACC_COEF_A=(short)val; break;\r
285 case H_Reverb+8 : spu.rvb->ACC_COEF_B=(short)val; break;\r
286 case H_Reverb+10 : spu.rvb->ACC_COEF_C=(short)val; break;\r
287 case H_Reverb+12 : spu.rvb->ACC_COEF_D=(short)val; break;\r
288 case H_Reverb+14 : spu.rvb->IIR_COEF=(short)val; break;\r
289 case H_Reverb+16 : spu.rvb->FB_ALPHA=(short)val; break;\r
290 case H_Reverb+18 : spu.rvb->FB_X=(short)val; break;\r
291 case H_Reverb+20 : goto rvbd;\r
292 case H_Reverb+22 : goto rvbd;\r
293 case H_Reverb+24 : goto rvbd;\r
294 case H_Reverb+26 : goto rvbd;\r
295 case H_Reverb+28 : goto rvbd;\r
296 case H_Reverb+30 : goto rvbd;\r
297 case H_Reverb+32 : goto rvbd;\r
298 case H_Reverb+34 : goto rvbd;\r
299 case H_Reverb+36 : goto rvbd;\r
300 case H_Reverb+38 : goto rvbd;\r
301 case H_Reverb+40 : goto rvbd;\r
302 case H_Reverb+42 : goto rvbd;\r
303 case H_Reverb+44 : goto rvbd;\r
304 case H_Reverb+46 : goto rvbd;\r
305 case H_Reverb+48 : goto rvbd;\r
306 case H_Reverb+50 : goto rvbd;\r
307 case H_Reverb+52 : goto rvbd;\r
308 case H_Reverb+54 : goto rvbd;\r
309 case H_Reverb+56 : goto rvbd;\r
310 case H_Reverb+58 : goto rvbd;\r
311 case H_Reverb+60 : spu.rvb->IN_COEF_L=(short)val; break;\r
312 case H_Reverb+62 : spu.rvb->IN_COEF_R=(short)val; break;\r
ef79bbde 313 }\r
650adfd2 314 return;\r
315\r
316upd_irq:\r
3154bfab 317 if (spu.spuCtrl & CTRL_IRQ)\r
650adfd2 318 schedule_next_irq();\r
319 return;\r
ef79bbde 320\r
650adfd2 321rvbd:\r
05c7cec7 322 spu.rvb->dirty = 1; // recalculate on next update\r
ef79bbde
P		 323}\r
324\r
325////////////////////////////////////////////////////////////////////////\r
326// READ REGISTER: called by main emu\r
327////////////////////////////////////////////////////////////////////////\r
328\r
6183ddf9 329unsigned short CALLBACK SPUreadRegister(unsigned long reg, unsigned int cycles)\r
ef79bbde 330{\r
3fc2a418 331 const unsigned long r = reg & 0xffe;\r
ef79bbde 332 \r
ef79bbde
P		 333 if(r>=0x0c00 && r<0x0d80)\r
334 {\r
335 switch(r&0x0f)\r
336 {\r
337 case 12: // get adsr vol\r
338 {\r
6183ddf9 339 // this used to return 1 immediately after keyon to deal with\r
340 // some poor timing, but that causes Rayman 2 to lose track of\r
341 // it's channels on busy scenes and start looping some of them forever\r
342 const int ch = (r>>4) - 0xc0;\r
343 if (spu.s_chan[ch].bStarting)\r
344 do_samples_if_needed(cycles, 0, 2);\r
345 return (unsigned short)(spu.s_chan[ch].ADSRX.EnvelopeVol >> 16);\r
ef79bbde
P		 346 }\r
347\r
348 case 14: // get loop address\r
349 {\r
350 const int ch=(r>>4)-0xc0;\r
5514a050 351 return (unsigned short)((spu.s_chan[ch].pLoop-spu.spuMemC)>>3);\r
ef79bbde
P		 352 }\r
353 }\r
354 }\r
3fc2a418 355 else if (0x0e00 <= r && r < 0x0e60)\r
356 {\r
357 int ch = (r >> 2) & 0x1f;\r
358 int v = spu.s_chan[ch].iVolume[(r >> 1) & 1] << 1;\r
359 log_unhandled("c%02d r %cvol %04x\n", ch, (r & 2) ? 'r' : 'l', v);\r
360 return v;\r
361 }\r
ef79bbde
P		 362\r
363 switch(r)\r
364 {\r
365 case H_SPUctrl:\r
3154bfab 366 return spu.spuCtrl;\r
ef79bbde
P		 367\r
368 case H_SPUstat:\r
6109649c 369 return spu.spuStat;\r
ef79bbde
P		 370 \r
371 case H_SPUaddr:\r
3154bfab 372 return (unsigned short)(spu.spuAddr>>3);\r
ef79bbde 373\r
56e500f3 374 // this reportedly doesn't work on real hw\r
ef79bbde
P		 375 case H_SPUdata:\r
376 {\r
b71a957f 377 unsigned short s = LE16TOH(*(unsigned short *)(spu.spuMemC + spu.spuAddr));\r
5514a050 378 spu.spuAddr += 2;\r
379 spu.spuAddr &= 0x7fffe;\r
56e500f3 380 //check_irq_io(spu.spuAddr);\r
ef79bbde
P		 381 return s;\r
382 }\r
383\r
ef79bbde
P		 384 //case H_SPUIsOn1:\r
385 // return IsSoundOn(0,16);\r
386\r
387 //case H_SPUIsOn2:\r
388 // return IsSoundOn(16,24);\r
389 \r
7df2c03c 390 case H_SPUMute1:\r
391 case H_SPUMute2:\r
392 log_unhandled("r isOn: %08lx\n", reg);\r
393 break;\r
380cbc61 394\r
395 case 0x0dac:\r
396 case H_SPUirqAddr:\r
397 case H_CDLeft:\r
398 case H_CDRight:\r
399 case H_ExtLeft:\r
400 case H_ExtRight:\r
401 break;\r
402\r
403 default:\r
404 if (r >= 0xda0)\r
405 log_unhandled("spu r %08lx\n", reg);\r
406 break;\r
ef79bbde
P		 407 }\r
408\r
3154bfab 409 return spu.regArea[(r-0xc00)>>1];\r
ef79bbde
P		 410}\r
411 \r
412////////////////////////////////////////////////////////////////////////\r
413// SOUND ON register write\r
414////////////////////////////////////////////////////////////////////////\r
415\r
7e44d49d 416static void SoundOn(int start,int end,unsigned short val)\r
ef79bbde
P		 417{\r
418 int ch;\r
419\r
420 for(ch=start;ch<end;ch++,val>>=1) // loop channels\r
421 {\r
a0d4a8f5 422 if((val&1) && regAreaGetCh(ch, 6)) // mmm... start has to be set before key on !?!\r
ef79bbde 423 {\r
9601ca6d 424 spu.s_chan[ch].bIgnoreLoop = 0;\r
6183ddf9 425 spu.s_chan[ch].bStarting = 1;\r
3154bfab 426 spu.dwNewChannel|=(1<<ch);\r
ef79bbde
P		 427 }\r
428 }\r
429}\r
430\r
431////////////////////////////////////////////////////////////////////////\r
432// SOUND OFF register write\r
433////////////////////////////////////////////////////////////////////////\r
434\r
7e44d49d 435static void SoundOff(int start,int end,unsigned short val)\r
ef79bbde
P		 436{\r
437 int ch;\r
fcb93a4f 438 for (ch = start; val && ch < end; ch++, val >>= 1) // loop channels\r
ef79bbde 439 {\r
9ad8abfa 440 if(val&1)\r
ef79bbde 441 {\r
5514a050 442 spu.s_chan[ch].ADSRX.State = ADSR_RELEASE;\r
b00afb77 443\r
444 // Jungle Book - Rhythm 'n Groove\r
445 // - turns off buzzing sound (loop hangs)\r
3154bfab 446 spu.dwNewChannel &= ~(1<<ch);\r
ef79bbde
P		 447 } \r
448 }\r
449}\r
450\r
451////////////////////////////////////////////////////////////////////////\r
452// FMOD register write\r
453////////////////////////////////////////////////////////////////////////\r
454\r
7e44d49d 455static void FModOn(int start,int end,unsigned short val)\r
ef79bbde
P		 456{\r
457 int ch;\r
458\r
459 for(ch=start;ch<end;ch++,val>>=1) // loop channels\r
460 {\r
461 if(val&1) // -> fmod on/off\r
462 {\r
463 if(ch>0) \r
464 {\r
5514a050 465 spu.s_chan[ch].bFMod=1; // --> sound channel\r
466 spu.s_chan[ch-1].bFMod=2; // --> freq channel\r
ef79bbde
P		 467 }\r
468 }\r
469 else\r
470 {\r
5514a050 471 spu.s_chan[ch].bFMod=0; // --> turn off fmod\r
472 if(ch>0&&spu.s_chan[ch-1].bFMod==2)\r
473 spu.s_chan[ch-1].bFMod=0;\r
ef79bbde
P		 474 }\r
475 }\r
476}\r
477\r
478////////////////////////////////////////////////////////////////////////\r
479// NOISE register write\r
480////////////////////////////////////////////////////////////////////////\r
481\r
7e44d49d 482static void NoiseOn(int start,int end,unsigned short val)\r
ef79bbde
P		 483{\r
484 int ch;\r
485\r
486 for(ch=start;ch<end;ch++,val>>=1) // loop channels\r
487 {\r
5514a050 488 spu.s_chan[ch].bNoise=val&1; // -> noise on/off\r
ef79bbde
P		 489 }\r
490}\r
491\r
492////////////////////////////////////////////////////////////////////////\r
493// LEFT VOLUME register write\r
494////////////////////////////////////////////////////////////////////////\r
495\r
496// please note: sweep and phase invert are wrong... but I've never seen\r
497// them used\r
498\r
7e44d49d 499static void SetVolumeL(unsigned char ch,short vol) // LEFT VOLUME\r
ef79bbde 500{\r
ef79bbde
P		 501 if(vol&0x8000) // sweep?\r
502 {\r
503 short sInc=1; // -> sweep up?\r
7df2c03c 504 log_unhandled("ch%d sweepl %04x\n", ch, vol);\r
ef79bbde
P		 505 if(vol&0x2000) sInc=-1; // -> or down?\r
506 if(vol&0x1000) vol^=0xffff; // -> mmm... phase inverted? have to investigate this\r
507 vol=((vol&0x7f)+1)/2; // -> sweep: 0..127 -> 0..64\r
508 vol+=vol/(2*sInc); // -> HACK: we don't sweep right now, so we just raise/lower the volume by the half!\r
509 vol*=128;\r
510 }\r
511 else // no sweep:\r
512 {\r
513 if(vol&0x4000) // -> mmm... phase inverted? have to investigate this\r
514 //vol^=0xffff;\r
515 vol=0x3fff-(vol&0x3fff);\r
516 }\r
517\r
518 vol&=0x3fff;\r
5514a050 519 spu.s_chan[ch].iLeftVolume=vol; // store volume\r
3fc2a418 520 //spu.regArea[(0xe00-0xc00)/2 + ch*2 + 0] = vol << 1;\r
ef79bbde
P		 521}\r
522\r
523////////////////////////////////////////////////////////////////////////\r
524// RIGHT VOLUME register write\r
525////////////////////////////////////////////////////////////////////////\r
526\r
7e44d49d 527static void SetVolumeR(unsigned char ch,short vol) // RIGHT VOLUME\r
ef79bbde 528{\r
ef79bbde
P		 529 if(vol&0x8000) // comments... see above :)\r
530 {\r
531 short sInc=1;\r
7df2c03c 532 log_unhandled("ch%d sweepr %04x\n", ch, vol);\r
ef79bbde
P		 533 if(vol&0x2000) sInc=-1;\r
534 if(vol&0x1000) vol^=0xffff;\r
535 vol=((vol&0x7f)+1)/2; \r
536 vol+=vol/(2*sInc);\r
537 vol*=128;\r
538 }\r
539 else \r
540 {\r
541 if(vol&0x4000) //vol=vol^=0xffff;\r
542 vol=0x3fff-(vol&0x3fff);\r
543 }\r
544\r
545 vol&=0x3fff;\r
546\r
5514a050 547 spu.s_chan[ch].iRightVolume=vol;\r
3fc2a418 548 //spu.regArea[(0xe00-0xc00)/2 + ch*2 + 1] = vol << 1;\r
ef79bbde
P		 549}\r
550\r
551////////////////////////////////////////////////////////////////////////\r
552// PITCH register write\r
553////////////////////////////////////////////////////////////////////////\r
554\r
7e44d49d 555static void SetPitch(int ch,unsigned short val) // SET PITCH\r
ef79bbde
P		 556{\r
557 int NP;\r
558 if(val>0x3fff) NP=0x3fff; // get pitch val\r
559 else NP=val;\r
560\r
4f9efe54 561 spu.s_chan[ch].iRawPitch = NP;\r
562 spu.s_chan[ch].sinc = NP << 4;\r
563 spu.s_chan[ch].sinc_inv = 0;\r
df68316d 564\r
565 // don't mess spu.dwChannelsAudible as adsr runs independently\r
ef79bbde
P		 566}\r
567\r
568////////////////////////////////////////////////////////////////////////\r
569// REVERB register write\r
570////////////////////////////////////////////////////////////////////////\r
571\r
7e44d49d 572static void ReverbOn(int start,int end,unsigned short val)\r
ef79bbde
P		 573{\r
574 int ch;\r
575\r
576 for(ch=start;ch<end;ch++,val>>=1) // loop channels\r
577 {\r
5514a050 578 spu.s_chan[ch].bReverb=val&1; // -> reverb on/off\r
ef79bbde
P		 579 }\r
580}\r
fcb93a4f 581\r
582// vim:shiftwidth=1:expandtab\r
ARM optimized PCSX fork