// will be included from spu.c
#ifdef _IN_SPU
-#define XA_HACK
-
////////////////////////////////////////////////////////////////////////
// XA GLOBALS
////////////////////////////////////////////////////////////////////////
INLINE void MixXA(void)
{
int ns;
- uint32_t l;
-
- for(ns=0;ns<NSSIZE*2 && XAPlay!=XAFeed;)
- {
- XALastVal=*XAPlay++;
- if(XAPlay==XAEnd) XAPlay=XAStart;
-#ifdef XA_HACK
- SSumLR[ns++]+=(((short)(XALastVal&0xffff)) * iLeftXAVol)/32768;
- SSumLR[ns++]+=(((short)((XALastVal>>16)&0xffff)) * iRightXAVol)/32768;
-#else
- SSumLR[ns++]+=(((short)(XALastVal&0xffff)) * iLeftXAVol)/32767;
- SSumLR[ns++]+=(((short)((XALastVal>>16)&0xffff)) * iRightXAVol)/32767;
-#endif
- }
+ short l, r;
+ uint32_t v;
+ int cursor = decode_pos;
- if(XAPlay==XAFeed && XARepeat)
- {
+ if(XAPlay != XAFeed || XARepeat > 0)
+ {
+ if(XAPlay == XAFeed)
XARepeat--;
- for(;ns<NSSIZE*2;)
- {
-#ifdef XA_HACK
- SSumLR[ns++]+=(((short)(XALastVal&0xffff)) * iLeftXAVol)/32768;
- SSumLR[ns++]+=(((short)((XALastVal>>16)&0xffff)) * iRightXAVol)/32768;
-#else
- SSumLR[ns++]+=(((short)(XALastVal&0xffff)) * iLeftXAVol)/32767;
- SSumLR[ns++]+=(((short)((XALastVal>>16)&0xffff)) * iRightXAVol)/32767;
-#endif
- }
- }
+
+ v = XALastVal;
+ for(ns=0;ns<NSSIZE*2;)
+ {
+ if(XAPlay != XAFeed) v=*XAPlay++;
+ if(XAPlay == XAEnd) XAPlay=XAStart;
+
+ l = ((int)(short)v * iLeftXAVol) >> 15;
+ r = ((int)(short)(v >> 16) * iLeftXAVol) >> 15;
+ SSumLR[ns++] += l;
+ SSumLR[ns++] += r;
+
+ spuMem[cursor] = v;
+ spuMem[cursor + 0x400/2] = v >> 16;
+ cursor = (cursor + 1) & 0x1ff;
+ }
+ XALastVal = v;
+ }
for(ns=0;ns<NSSIZE*2 && CDDAPlay!=CDDAFeed && (CDDAPlay!=CDDAEnd-1||CDDAFeed!=CDDAStart);)
{
- l=*CDDAPlay++;
+ v=*CDDAPlay++;
if(CDDAPlay==CDDAEnd) CDDAPlay=CDDAStart;
- SSumLR[ns++]+=(((short)(l&0xffff)) * iLeftXAVol) >> 15;
- SSumLR[ns++]+=(((short)((l>>16)&0xffff)) * iRightXAVol) >> 15;
+
+ l = ((int)(short)v * iLeftXAVol) >> 15;
+ r = ((int)(short)(v >> 16) * iLeftXAVol) >> 15;
+ SSumLR[ns++] += l;
+ SSumLR[ns++] += r;
+
+ spuMem[cursor] = v;
+ spuMem[cursor + 0x400/2] = v >> 16;
+ cursor = (cursor + 1) & 0x1ff;
}
}
// small linux time helper... only used for watchdog
////////////////////////////////////////////////////////////////////////
-unsigned long timeGetTime_spu()
+static unsigned long timeGetTime_spu()
{
struct timeval tv;
gettimeofday(&tv, 0); // well, maybe there are better ways
// FEED CDDA
////////////////////////////////////////////////////////////////////////
-INLINE void FeedCDDA(unsigned char *pcm, int nBytes)
+INLINE int FeedCDDA(unsigned char *pcm, int nBytes)
{
+ int space;
+ space=(CDDAPlay-CDDAFeed-1)*4 & (CDDA_BUFFER_SIZE - 1);
+ if(space<nBytes)
+ return 0x7761; // rearmed_wait
+
while(nBytes>0)
{
if(CDDAFeed==CDDAEnd) CDDAFeed=CDDAStart;
- while(CDDAFeed==CDDAPlay-1||
- (CDDAFeed==CDDAEnd-1&&CDDAPlay==CDDAStart))
- {
- if (!iUseTimer) usleep(1000);
- else return;
- }
- *CDDAFeed++=(*pcm | (*(pcm+1)<<8) | (*(pcm+2)<<16) | (*(pcm+3)<<24));
- nBytes-=4;
- pcm+=4;
+ space=(CDDAPlay-CDDAFeed-1)*4 & (CDDA_BUFFER_SIZE - 1);
+ if(CDDAFeed+space/4>CDDAEnd)
+ space=(CDDAEnd-CDDAFeed)*4;
+ if(space>nBytes)
+ space=nBytes;
+
+ memcpy(CDDAFeed,pcm,space);
+ CDDAFeed+=space/4;
+ nBytes-=space;
+ pcm+=space;
}
+
+ return 0x676f; // rearmed_go
}
#endif