diff options
Diffstat (limited to 'plugins')
| -rw-r--r-- | plugins/dfsound/spu.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/plugins/dfsound/spu.c b/plugins/dfsound/spu.c index f9c13d4..780b091 100644 --- a/plugins/dfsound/spu.c +++ b/plugins/dfsound/spu.c @@ -656,6 +656,53 @@ ENDX: ; } } + // advance "stopped" channels that can cause irqs + // (all chans are always playing on the real thing..) + if(!bIRQReturn && (spuCtrl&CTRL_IRQ)) + for(ch=0;ch<MAXCHAN;ch++) + { + if(dwChannelOn&(1<<ch)) continue; // already handled + if(s_chan[ch].pCurr == (unsigned char *)-1) + continue; + if(s_chan[ch].pCurr > pSpuIrq && s_chan[ch].pLoop > pSpuIrq) + continue; + + if(s_chan[ch].iActFreq!=s_chan[ch].iUsedFreq) // new psx frequency? + VoiceChangeFrequency(ch); + + s_chan[ch].spos += s_chan[ch].sinc * NSSIZE; + while(s_chan[ch].spos >= 28 * 0x10000) + { + unsigned char *start=s_chan[ch].pCurr; + int flags = start[1]; + + // Tron Bonne hack, probably wrong (could be wrong memory contents..) + if(flags & ~7) flags = 0; + + if(start == pSpuIrq) + { + do_irq(); + bIRQReturn = 1; + } + else if((flags & 1) && start == s_chan[ch].pLoop) + { + // looping on self + s_chan[ch].pCurr=(unsigned char *)-1; + break; + } + + if((flags&4) && !s_chan[ch].bIgnoreLoop) + s_chan[ch].pLoop=start; + + s_chan[ch].pCurr += 16; + + if(flags & 1) + s_chan[ch].pCurr = s_chan[ch].pLoop; + + s_chan[ch].spos -= 28 * 0x10000; + } + } + if(bIRQReturn && iSPUIRQWait) // special return for "spu irq - wait for cpu action" { iSpuAsyncWait=1; |