1 /***************************************************************************
4 begin : Wed May 15 2002
5 copyright : (C) 2002 by Pete Bernert
6 email : BlackDove@addcom.de
7 ***************************************************************************/
8 /***************************************************************************
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. *
16 ***************************************************************************/
23 // will be included from spu.c
26 ////////////////////////////////////////////////////////////////////////
28 ////////////////////////////////////////////////////////////////////////
30 static int gauss_ptr = 0;
31 static int gauss_window[8] = {0, 0, 0, 0, 0, 0, 0, 0};
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)]
38 ////////////////////////////////////////////////////////////////////////
40 ////////////////////////////////////////////////////////////////////////
42 INLINE void MixXA(int *SSumLR, int *RVB, int ns_to, int decode_pos)
44 int cursor = decode_pos;
47 uint32_t v = spu.XALastVal;
49 if(spu.XAPlay != spu.XAFeed || spu.XARepeat > 0)
51 if(spu.XAPlay == spu.XAFeed)
54 for(ns = 0; ns < ns_to*2; ns += 2)
56 if(spu.XAPlay != spu.XAFeed) v=*spu.XAPlay++;
57 if(spu.XAPlay == spu.XAEnd) spu.XAPlay=spu.XAStart;
59 l = ((int)(short)v * spu.iLeftXAVol) >> 15;
60 r = ((int)(short)(v >> 16) * spu.iLeftXAVol) >> 15;
61 if (spu.spuCtrl & CTRL_CD)
66 if (unlikely(spu.spuCtrl & CTRL_CDREVERB))
72 spu.spuMem[cursor] = HTOLE16(v);
73 spu.spuMem[cursor + 0x400/2] = HTOLE16(v >> 16);
74 cursor = (cursor + 1) & 0x1ff;
78 // occasionally CDDAFeed underflows by a few samples due to poor timing,
79 // hence this 'ns_to < 8'
80 else if(spu.CDDAPlay != spu.CDDAFeed || ns_to < 8)
82 for(ns = 0; ns < ns_to*2; ns += 2)
84 if(spu.CDDAPlay != spu.CDDAFeed) v=*spu.CDDAPlay++;
85 if(spu.CDDAPlay == spu.CDDAEnd) spu.CDDAPlay=spu.CDDAStart;
87 l = ((int)(short)v * spu.iLeftXAVol) >> 15;
88 r = ((int)(short)(v >> 16) * spu.iLeftXAVol) >> 15;
89 if (spu.spuCtrl & CTRL_CD)
94 if (unlikely(spu.spuCtrl & CTRL_CDREVERB))
100 spu.spuMem[cursor] = HTOLE16(v);
101 spu.spuMem[cursor + 0x400/2] = HTOLE16(v >> 16);
102 cursor = (cursor + 1) & 0x1ff;
110 ////////////////////////////////////////////////////////////////////////
111 // small linux time helper... only used for watchdog
112 ////////////////////////////////////////////////////////////////////////
115 static unsigned long timeGetTime_spu()
119 #elif defined(_WIN32)
120 return GetTickCount();
123 gettimeofday(&tv, 0); // well, maybe there are better ways
124 return tv.tv_sec * 1000 + tv.tv_usec/1000; // to do that, but at least it works
129 ////////////////////////////////////////////////////////////////////////
131 ////////////////////////////////////////////////////////////////////////
133 void FeedXA(const xa_decode_t *xap)
135 int sinc,spos,i,iSize,iPlace,vl,vr;
137 if(!spu.bSPUIsOpen) return;
139 spu.XARepeat = 3; // set up repeat
142 iSize=((45500*xap->nsamples)/xap->freq); // get size
144 iSize=((44100*xap->nsamples)/xap->freq); // get size
146 if(!iSize) return; // none? bye
148 if(spu.XAFeed<spu.XAPlay) iPlace=spu.XAPlay-spu.XAFeed; // how much space in my buf?
149 else iPlace=(spu.XAEnd-spu.XAFeed) + (spu.XAPlay-spu.XAStart);
151 if(iPlace==0) return; // no place at all
153 //----------------------------------------------------//
155 if(spu_config.iXAPitch) // pitch change option?
158 static DWORD dwFPS=0;
159 static int iFPSCnt=0;
160 static int iLastSize=0;
162 DWORD dw=timeGetTime_spu(),dw1,dw2;
166 dwFPS+=dw-dwLT;iFPSCnt++;
174 if(dw1>=(dwL1-100) && dw1<=(dwL1+100)) dw1=dwL1;
176 dw2=(xap->freq*100/xap->nsamples);
177 if((!dw1)||((dw2+100)>=dw1)) iLastSize=0;
180 iLastSize=iSize*dw2/dw1;
181 if(iLastSize>iPlace) iLastSize=iPlace;
188 if(iLastSize) iSize=iLastSize;
192 //----------------------------------------------------//
195 sinc = (xap->nsamples << 16) / iSize; // calc freq by num / size
199 uint32_t * pS=(uint32_t *)xap->pcm;
203 if(spu_config.iXAPitch)
205 int32_t l1,l2;short s;
208 if(spu_config.iUseInterpolation==2)
210 while(spos>=0x10000L)
213 gauss_window[gauss_ptr] = (short)LOWORD(l);
214 gauss_window[4+gauss_ptr] = (short)HIWORD(l);
215 gauss_ptr = (gauss_ptr+1) & 3;
218 vl = (spos >> 6) & ~3;
219 vr=(gauss[vl]*gvall0) >> 15;
220 vr+=(gauss[vl+1]*gvall(1)) >> 15;
221 vr+=(gauss[vl+2]*gvall(2)) >> 15;
222 vr+=(gauss[vl+3]*gvall(3)) >> 15;
224 vr=(gauss[vl]*gvalr0) >> 15;
225 vr+=(gauss[vl+1]*gvalr(1)) >> 15;
226 vr+=(gauss[vl+2]*gvalr(2)) >> 15;
227 vr+=(gauss[vl+3]*gvalr(3)) >> 15;
232 while(spos>=0x10000L)
241 l1=(l1*iPlace)/iSize;
245 l2=(l2*iPlace)/iSize;
247 l=(l1&0xffff)|(l2<<16);
251 if(spu.XAFeed==spu.XAEnd) spu.XAFeed=spu.XAStart;
252 if(spu.XAFeed==spu.XAPlay)
254 if(spu.XAPlay!=spu.XAStart) spu.XAFeed=spu.XAPlay-1;
266 if(spu_config.iUseInterpolation==2)
268 while(spos>=0x10000L)
271 gauss_window[gauss_ptr] = (short)LOWORD(l);
272 gauss_window[4+gauss_ptr] = (short)HIWORD(l);
273 gauss_ptr = (gauss_ptr+1) & 3;
276 vl = (spos >> 6) & ~3;
277 vr=(gauss[vl]*gvall0) >> 15;
278 vr+=(gauss[vl+1]*gvall(1)) >> 15;
279 vr+=(gauss[vl+2]*gvall(2)) >> 15;
280 vr+=(gauss[vl+3]*gvall(3)) >> 15;
282 vr=(gauss[vl]*gvalr0) >> 15;
283 vr+=(gauss[vl+1]*gvalr(1)) >> 15;
284 vr+=(gauss[vl+2]*gvalr(2)) >> 15;
285 vr+=(gauss[vl+3]*gvalr(3)) >> 15;
290 while(spos>=0x10000L)
299 if(spu.XAFeed==spu.XAEnd) spu.XAFeed=spu.XAStart;
300 if(spu.XAFeed==spu.XAPlay)
302 if(spu.XAPlay!=spu.XAStart) spu.XAFeed=spu.XAPlay-1;
312 unsigned short * pS=(unsigned short *)xap->pcm;
313 uint32_t l;short s=0;
316 if(spu_config.iXAPitch)
321 if(spu_config.iUseInterpolation==2)
323 while(spos>=0x10000L)
325 gauss_window[gauss_ptr] = (short)*pS++;
326 gauss_ptr = (gauss_ptr+1) & 3;
329 vl = (spos >> 6) & ~3;
330 vr=(gauss[vl]*gvall0) >> 15;
331 vr+=(gauss[vl+1]*gvall(1)) >> 15;
332 vr+=(gauss[vl+2]*gvall(2)) >> 15;
333 vr+=(gauss[vl+3]*gvall(3)) >> 15;
339 while(spos>=0x10000L)
347 l1=(l1*iPlace)/iSize;
349 l=(l1&0xffff)|(l1<<16);
352 if(spu.XAFeed==spu.XAEnd) spu.XAFeed=spu.XAStart;
353 if(spu.XAFeed==spu.XAPlay)
355 if(spu.XAPlay!=spu.XAStart) spu.XAFeed=spu.XAPlay-1;
367 if(spu_config.iUseInterpolation==2)
369 while(spos>=0x10000L)
371 gauss_window[gauss_ptr] = (short)*pS++;
372 gauss_ptr = (gauss_ptr+1) & 3;
375 vl = (spos >> 6) & ~3;
376 vr=(gauss[vl]*gvall0) >> 15;
377 vr+=(gauss[vl+1]*gvall(1)) >> 15;
378 vr+=(gauss[vl+2]*gvall(2)) >> 15;
379 vr+=(gauss[vl+3]*gvall(3)) >> 15;
384 while(spos>=0x10000L)
393 *spu.XAFeed++=(l|(l<<16));
395 if(spu.XAFeed==spu.XAEnd) spu.XAFeed=spu.XAStart;
396 if(spu.XAFeed==spu.XAPlay)
398 if(spu.XAPlay!=spu.XAStart) spu.XAFeed=spu.XAPlay-1;
408 ////////////////////////////////////////////////////////////////////////
410 ////////////////////////////////////////////////////////////////////////
412 void FeedCDDA(unsigned char *pcm, int nBytes)
415 space=(spu.CDDAPlay-spu.CDDAFeed-1)*4 & (CDDA_BUFFER_SIZE - 1);
421 if(spu.CDDAFeed==spu.CDDAEnd) spu.CDDAFeed=spu.CDDAStart;
422 space=(spu.CDDAPlay-spu.CDDAFeed-1)*4 & (CDDA_BUFFER_SIZE - 1);
423 if(spu.CDDAFeed+space/4>spu.CDDAEnd)
424 space=(spu.CDDAEnd-spu.CDDAFeed)*4;
428 memcpy(spu.CDDAFeed,pcm,space);
429 spu.CDDAFeed+=space/4;
436 // vim:shiftwidth=1:expandtab