| 1 | /*************************************************************************** |
| 2 | xa.c - description |
| 3 | ------------------- |
| 4 | begin : Wed May 15 2002 |
| 5 | copyright : (C) 2002 by Pete Bernert |
| 6 | email : BlackDove@addcom.de |
| 7 | ***************************************************************************/ |
| 8 | /*************************************************************************** |
| 9 | * * |
| 10 | * This program is free software; you can redistribute it and/or modify * |
| 11 | * it under the terms of the GNU General Public License as published by * |
| 12 | * the Free Software Foundation; either version 2 of the License, or * |
| 13 | * (at your option) any later version. See also the license.txt file for * |
| 14 | * additional informations. * |
| 15 | * * |
| 16 | ***************************************************************************/ |
| 17 | |
| 18 | #include "stdafx.h" |
| 19 | #include "spu.h" |
| 20 | #define _IN_XA |
| 21 | #include <stdint.h> |
| 22 | |
| 23 | // will be included from spu.c |
| 24 | #ifdef _IN_SPU |
| 25 | |
| 26 | //////////////////////////////////////////////////////////////////////// |
| 27 | // XA GLOBALS |
| 28 | //////////////////////////////////////////////////////////////////////// |
| 29 | |
| 30 | static int gauss_ptr = 0; |
| 31 | static int gauss_window[8] = {0, 0, 0, 0, 0, 0, 0, 0}; |
| 32 | |
| 33 | #define gvall0 gauss_window[gauss_ptr] |
| 34 | #define gvall(x) gauss_window[(gauss_ptr+x)&3] |
| 35 | #define gvalr0 gauss_window[4+gauss_ptr] |
| 36 | #define gvalr(x) gauss_window[4+((gauss_ptr+x)&3)] |
| 37 | |
| 38 | //////////////////////////////////////////////////////////////////////// |
| 39 | // MIX XA & CDDA |
| 40 | //////////////////////////////////////////////////////////////////////// |
| 41 | |
| 42 | INLINE void MixXA(int *SSumLR, int ns_to, int decode_pos) |
| 43 | { |
| 44 | int cursor = decode_pos; |
| 45 | int ns; |
| 46 | short l, r; |
| 47 | uint32_t v = spu.XALastVal; |
| 48 | |
| 49 | if(spu.XAPlay != spu.XAFeed || spu.XARepeat > 0) |
| 50 | { |
| 51 | if(spu.XAPlay == spu.XAFeed) |
| 52 | spu.XARepeat--; |
| 53 | |
| 54 | for(ns = 0; ns < ns_to*2; ) |
| 55 | { |
| 56 | if(spu.XAPlay != spu.XAFeed) v=*spu.XAPlay++; |
| 57 | if(spu.XAPlay == spu.XAEnd) spu.XAPlay=spu.XAStart; |
| 58 | |
| 59 | l = ((int)(short)v * spu.iLeftXAVol) >> 15; |
| 60 | r = ((int)(short)(v >> 16) * spu.iLeftXAVol) >> 15; |
| 61 | SSumLR[ns++] += l; |
| 62 | SSumLR[ns++] += r; |
| 63 | |
| 64 | spu.spuMem[cursor] = HTOLE16(v); |
| 65 | spu.spuMem[cursor + 0x400/2] = HTOLE16(v >> 16); |
| 66 | cursor = (cursor + 1) & 0x1ff; |
| 67 | } |
| 68 | spu.XALastVal = v; |
| 69 | } |
| 70 | // occasionally CDDAFeed underflows by a few samples due to poor timing, |
| 71 | // hence this 'ns_to < 8' |
| 72 | else if(spu.CDDAPlay != spu.CDDAFeed || ns_to < 8) |
| 73 | { |
| 74 | for(ns = 0; ns < ns_to*2; ) |
| 75 | { |
| 76 | if(spu.CDDAPlay != spu.CDDAFeed) v=*spu.CDDAPlay++; |
| 77 | if(spu.CDDAPlay == spu.CDDAEnd) spu.CDDAPlay=spu.CDDAStart; |
| 78 | |
| 79 | l = ((int)(short)v * spu.iLeftXAVol) >> 15; |
| 80 | r = ((int)(short)(v >> 16) * spu.iLeftXAVol) >> 15; |
| 81 | SSumLR[ns++] += l; |
| 82 | SSumLR[ns++] += r; |
| 83 | |
| 84 | spu.spuMem[cursor] = HTOLE16(v); |
| 85 | spu.spuMem[cursor + 0x400/2] = HTOLE16(v >> 16); |
| 86 | cursor = (cursor + 1) & 0x1ff; |
| 87 | } |
| 88 | spu.XALastVal = v; |
| 89 | } |
| 90 | else |
| 91 | spu.XALastVal = 0; |
| 92 | } |
| 93 | |
| 94 | //////////////////////////////////////////////////////////////////////// |
| 95 | // small linux time helper... only used for watchdog |
| 96 | //////////////////////////////////////////////////////////////////////// |
| 97 | |
| 98 | #if 0 |
| 99 | static unsigned long timeGetTime_spu() |
| 100 | { |
| 101 | #if defined(NO_OS) |
| 102 | return 0; |
| 103 | #elif defined(_WIN32) |
| 104 | return GetTickCount(); |
| 105 | #else |
| 106 | struct timeval tv; |
| 107 | gettimeofday(&tv, 0); // well, maybe there are better ways |
| 108 | return tv.tv_sec * 1000 + tv.tv_usec/1000; // to do that, but at least it works |
| 109 | #endif |
| 110 | } |
| 111 | #endif |
| 112 | |
| 113 | //////////////////////////////////////////////////////////////////////// |
| 114 | // FEED XA |
| 115 | //////////////////////////////////////////////////////////////////////// |
| 116 | |
| 117 | INLINE void FeedXA(xa_decode_t *xap) |
| 118 | { |
| 119 | int sinc,spos,i,iSize,iPlace,vl,vr; |
| 120 | |
| 121 | if(!spu.bSPUIsOpen) return; |
| 122 | |
| 123 | spu.xapGlobal = xap; // store info for save states |
| 124 | spu.XARepeat = 3; // set up repeat |
| 125 | |
| 126 | #if 0//def XA_HACK |
| 127 | iSize=((45500*xap->nsamples)/xap->freq); // get size |
| 128 | #else |
| 129 | iSize=((44100*xap->nsamples)/xap->freq); // get size |
| 130 | #endif |
| 131 | if(!iSize) return; // none? bye |
| 132 | |
| 133 | if(spu.XAFeed<spu.XAPlay) iPlace=spu.XAPlay-spu.XAFeed; // how much space in my buf? |
| 134 | else iPlace=(spu.XAEnd-spu.XAFeed) + (spu.XAPlay-spu.XAStart); |
| 135 | |
| 136 | if(iPlace==0) return; // no place at all |
| 137 | |
| 138 | //----------------------------------------------------// |
| 139 | #if 0 |
| 140 | if(spu_config.iXAPitch) // pitch change option? |
| 141 | { |
| 142 | static DWORD dwLT=0; |
| 143 | static DWORD dwFPS=0; |
| 144 | static int iFPSCnt=0; |
| 145 | static int iLastSize=0; |
| 146 | static DWORD dwL1=0; |
| 147 | DWORD dw=timeGetTime_spu(),dw1,dw2; |
| 148 | |
| 149 | iPlace=iSize; |
| 150 | |
| 151 | dwFPS+=dw-dwLT;iFPSCnt++; |
| 152 | |
| 153 | dwLT=dw; |
| 154 | |
| 155 | if(iFPSCnt>=10) |
| 156 | { |
| 157 | if(!dwFPS) dwFPS=1; |
| 158 | dw1=1000000/dwFPS; |
| 159 | if(dw1>=(dwL1-100) && dw1<=(dwL1+100)) dw1=dwL1; |
| 160 | else dwL1=dw1; |
| 161 | dw2=(xap->freq*100/xap->nsamples); |
| 162 | if((!dw1)||((dw2+100)>=dw1)) iLastSize=0; |
| 163 | else |
| 164 | { |
| 165 | iLastSize=iSize*dw2/dw1; |
| 166 | if(iLastSize>iPlace) iLastSize=iPlace; |
| 167 | iSize=iLastSize; |
| 168 | } |
| 169 | iFPSCnt=0;dwFPS=0; |
| 170 | } |
| 171 | else |
| 172 | { |
| 173 | if(iLastSize) iSize=iLastSize; |
| 174 | } |
| 175 | } |
| 176 | #endif |
| 177 | //----------------------------------------------------// |
| 178 | |
| 179 | spos=0x10000L; |
| 180 | sinc = (xap->nsamples << 16) / iSize; // calc freq by num / size |
| 181 | |
| 182 | if(xap->stereo) |
| 183 | { |
| 184 | uint32_t * pS=(uint32_t *)xap->pcm; |
| 185 | uint32_t l=0; |
| 186 | |
| 187 | #if 0 |
| 188 | if(spu_config.iXAPitch) |
| 189 | { |
| 190 | int32_t l1,l2;short s; |
| 191 | for(i=0;i<iSize;i++) |
| 192 | { |
| 193 | if(spu_config.iUseInterpolation==2) |
| 194 | { |
| 195 | while(spos>=0x10000L) |
| 196 | { |
| 197 | l = *pS++; |
| 198 | gauss_window[gauss_ptr] = (short)LOWORD(l); |
| 199 | gauss_window[4+gauss_ptr] = (short)HIWORD(l); |
| 200 | gauss_ptr = (gauss_ptr+1) & 3; |
| 201 | spos -= 0x10000L; |
| 202 | } |
| 203 | vl = (spos >> 6) & ~3; |
| 204 | vr=(gauss[vl]*gvall0) >> 15; |
| 205 | vr+=(gauss[vl+1]*gvall(1)) >> 15; |
| 206 | vr+=(gauss[vl+2]*gvall(2)) >> 15; |
| 207 | vr+=(gauss[vl+3]*gvall(3)) >> 15; |
| 208 | l= vr & 0xffff; |
| 209 | vr=(gauss[vl]*gvalr0) >> 15; |
| 210 | vr+=(gauss[vl+1]*gvalr(1)) >> 15; |
| 211 | vr+=(gauss[vl+2]*gvalr(2)) >> 15; |
| 212 | vr+=(gauss[vl+3]*gvalr(3)) >> 15; |
| 213 | l |= vr << 16; |
| 214 | } |
| 215 | else |
| 216 | { |
| 217 | while(spos>=0x10000L) |
| 218 | { |
| 219 | l = *pS++; |
| 220 | spos -= 0x10000L; |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | s=(short)LOWORD(l); |
| 225 | l1=s; |
| 226 | l1=(l1*iPlace)/iSize; |
| 227 | ssat32_to_16(l1); |
| 228 | s=(short)HIWORD(l); |
| 229 | l2=s; |
| 230 | l2=(l2*iPlace)/iSize; |
| 231 | ssat32_to_16(l2); |
| 232 | l=(l1&0xffff)|(l2<<16); |
| 233 | |
| 234 | *spu.XAFeed++=l; |
| 235 | |
| 236 | if(spu.XAFeed==spu.XAEnd) spu.XAFeed=spu.XAStart; |
| 237 | if(spu.XAFeed==spu.XAPlay) |
| 238 | { |
| 239 | if(spu.XAPlay!=spu.XAStart) spu.XAFeed=spu.XAPlay-1; |
| 240 | break; |
| 241 | } |
| 242 | |
| 243 | spos += sinc; |
| 244 | } |
| 245 | } |
| 246 | else |
| 247 | #endif |
| 248 | { |
| 249 | for(i=0;i<iSize;i++) |
| 250 | { |
| 251 | if(spu_config.iUseInterpolation==2) |
| 252 | { |
| 253 | while(spos>=0x10000L) |
| 254 | { |
| 255 | l = *pS++; |
| 256 | gauss_window[gauss_ptr] = (short)LOWORD(l); |
| 257 | gauss_window[4+gauss_ptr] = (short)HIWORD(l); |
| 258 | gauss_ptr = (gauss_ptr+1) & 3; |
| 259 | spos -= 0x10000L; |
| 260 | } |
| 261 | vl = (spos >> 6) & ~3; |
| 262 | vr=(gauss[vl]*gvall0) >> 15; |
| 263 | vr+=(gauss[vl+1]*gvall(1)) >> 15; |
| 264 | vr+=(gauss[vl+2]*gvall(2)) >> 15; |
| 265 | vr+=(gauss[vl+3]*gvall(3)) >> 15; |
| 266 | l= vr & 0xffff; |
| 267 | vr=(gauss[vl]*gvalr0) >> 15; |
| 268 | vr+=(gauss[vl+1]*gvalr(1)) >> 15; |
| 269 | vr+=(gauss[vl+2]*gvalr(2)) >> 15; |
| 270 | vr+=(gauss[vl+3]*gvalr(3)) >> 15; |
| 271 | l |= vr << 16; |
| 272 | } |
| 273 | else |
| 274 | { |
| 275 | while(spos>=0x10000L) |
| 276 | { |
| 277 | l = *pS++; |
| 278 | spos -= 0x10000L; |
| 279 | } |
| 280 | } |
| 281 | |
| 282 | *spu.XAFeed++=l; |
| 283 | |
| 284 | if(spu.XAFeed==spu.XAEnd) spu.XAFeed=spu.XAStart; |
| 285 | if(spu.XAFeed==spu.XAPlay) |
| 286 | { |
| 287 | if(spu.XAPlay!=spu.XAStart) spu.XAFeed=spu.XAPlay-1; |
| 288 | break; |
| 289 | } |
| 290 | |
| 291 | spos += sinc; |
| 292 | } |
| 293 | } |
| 294 | } |
| 295 | else |
| 296 | { |
| 297 | unsigned short * pS=(unsigned short *)xap->pcm; |
| 298 | uint32_t l;short s=0; |
| 299 | |
| 300 | #if 0 |
| 301 | if(spu_config.iXAPitch) |
| 302 | { |
| 303 | int32_t l1; |
| 304 | for(i=0;i<iSize;i++) |
| 305 | { |
| 306 | if(spu_config.iUseInterpolation==2) |
| 307 | { |
| 308 | while(spos>=0x10000L) |
| 309 | { |
| 310 | gauss_window[gauss_ptr] = (short)*pS++; |
| 311 | gauss_ptr = (gauss_ptr+1) & 3; |
| 312 | spos -= 0x10000L; |
| 313 | } |
| 314 | vl = (spos >> 6) & ~3; |
| 315 | vr=(gauss[vl]*gvall0) >> 15; |
| 316 | vr+=(gauss[vl+1]*gvall(1)) >> 15; |
| 317 | vr+=(gauss[vl+2]*gvall(2)) >> 15; |
| 318 | vr+=(gauss[vl+3]*gvall(3)) >> 15; |
| 319 | l1=s= vr; |
| 320 | l1 &= 0xffff; |
| 321 | } |
| 322 | else |
| 323 | { |
| 324 | while(spos>=0x10000L) |
| 325 | { |
| 326 | s = *pS++; |
| 327 | spos -= 0x10000L; |
| 328 | } |
| 329 | l1=s; |
| 330 | } |
| 331 | |
| 332 | l1=(l1*iPlace)/iSize; |
| 333 | ssat32_to_16(l1); |
| 334 | l=(l1&0xffff)|(l1<<16); |
| 335 | *spu.XAFeed++=l; |
| 336 | |
| 337 | if(spu.XAFeed==spu.XAEnd) spu.XAFeed=spu.XAStart; |
| 338 | if(spu.XAFeed==spu.XAPlay) |
| 339 | { |
| 340 | if(spu.XAPlay!=spu.XAStart) spu.XAFeed=spu.XAPlay-1; |
| 341 | break; |
| 342 | } |
| 343 | |
| 344 | spos += sinc; |
| 345 | } |
| 346 | } |
| 347 | else |
| 348 | #endif |
| 349 | { |
| 350 | for(i=0;i<iSize;i++) |
| 351 | { |
| 352 | if(spu_config.iUseInterpolation==2) |
| 353 | { |
| 354 | while(spos>=0x10000L) |
| 355 | { |
| 356 | gauss_window[gauss_ptr] = (short)*pS++; |
| 357 | gauss_ptr = (gauss_ptr+1) & 3; |
| 358 | spos -= 0x10000L; |
| 359 | } |
| 360 | vl = (spos >> 6) & ~3; |
| 361 | vr=(gauss[vl]*gvall0) >> 15; |
| 362 | vr+=(gauss[vl+1]*gvall(1)) >> 15; |
| 363 | vr+=(gauss[vl+2]*gvall(2)) >> 15; |
| 364 | vr+=(gauss[vl+3]*gvall(3)) >> 15; |
| 365 | l=s= vr; |
| 366 | } |
| 367 | else |
| 368 | { |
| 369 | while(spos>=0x10000L) |
| 370 | { |
| 371 | s = *pS++; |
| 372 | spos -= 0x10000L; |
| 373 | } |
| 374 | l=s; |
| 375 | } |
| 376 | |
| 377 | l &= 0xffff; |
| 378 | *spu.XAFeed++=(l|(l<<16)); |
| 379 | |
| 380 | if(spu.XAFeed==spu.XAEnd) spu.XAFeed=spu.XAStart; |
| 381 | if(spu.XAFeed==spu.XAPlay) |
| 382 | { |
| 383 | if(spu.XAPlay!=spu.XAStart) spu.XAFeed=spu.XAPlay-1; |
| 384 | break; |
| 385 | } |
| 386 | |
| 387 | spos += sinc; |
| 388 | } |
| 389 | } |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | //////////////////////////////////////////////////////////////////////// |
| 394 | // FEED CDDA |
| 395 | //////////////////////////////////////////////////////////////////////// |
| 396 | |
| 397 | INLINE int FeedCDDA(unsigned char *pcm, int nBytes) |
| 398 | { |
| 399 | int space; |
| 400 | space=(spu.CDDAPlay-spu.CDDAFeed-1)*4 & (CDDA_BUFFER_SIZE - 1); |
| 401 | if(space<nBytes) |
| 402 | return 0x7761; // rearmed_wait |
| 403 | |
| 404 | while(nBytes>0) |
| 405 | { |
| 406 | if(spu.CDDAFeed==spu.CDDAEnd) spu.CDDAFeed=spu.CDDAStart; |
| 407 | space=(spu.CDDAPlay-spu.CDDAFeed-1)*4 & (CDDA_BUFFER_SIZE - 1); |
| 408 | if(spu.CDDAFeed+space/4>spu.CDDAEnd) |
| 409 | space=(spu.CDDAEnd-spu.CDDAFeed)*4; |
| 410 | if(space>nBytes) |
| 411 | space=nBytes; |
| 412 | |
| 413 | memcpy(spu.CDDAFeed,pcm,space); |
| 414 | spu.CDDAFeed+=space/4; |
| 415 | nBytes-=space; |
| 416 | pcm+=space; |
| 417 | } |
| 418 | |
| 419 | return 0x676f; // rearmed_go |
| 420 | } |
| 421 | |
| 422 | #endif |