spu: irq adjustments according to MiSTer

[pcsx_rearmed.git] / plugins / dfsound / spu.c

diff --git a/plugins/dfsound/spu.c b/plugins/dfsound/spu.c
index f4426ab..7f8ab1d 100644 (file)
--- a/plugins/dfsound/spu.c
+++ b/plugins/dfsound/spu.c
@@ -212,7 +212,7 @@ static void do_irq(void)
 
 static int check_irq(int ch, unsigned char *pos)
 {
- if((spu.spuCtrl & CTRL_IRQ) && pos == spu.pSpuIrq)
+ if((spu.spuCtrl & (CTRL_ON|CTRL_IRQ)) == (CTRL_ON|CTRL_IRQ) && pos == spu.pSpuIrq)
  {
   //printf("ch%d irq %04x\n", ch, pos - spu.spuMemC);
   do_irq();
@@ -221,6 +221,17 @@ static int check_irq(int ch, unsigned char *pos)
  return 0;
 }
 
+void check_irq_io(unsigned int addr)
+{
+ unsigned int irq_addr = regAreaGet(H_SPUirqAddr) << 3;
+ //addr &= ~7; // ?
+ if((spu.spuCtrl & (CTRL_ON|CTRL_IRQ)) == (CTRL_ON|CTRL_IRQ) && addr == irq_addr)
+ {
+  //printf("io   irq %04x\n", irq_addr);
+  do_irq();
+ }
+}
+
 ////////////////////////////////////////////////////////////////////////
 // START SOUND... called by main thread to setup a new sound on a channel
 ////////////////////////////////////////////////////////////////////////
@@ -251,8 +262,7 @@ static void StartSoundMain(int ch)
 
  spu.dwNewChannel&=~(1<<ch);                           // clear new channel bit
  spu.dwChannelDead&=~(1<<ch);
- if (s_chan->iRawPitch)
-  spu.dwChannelsAudible|=1<<ch;
+ spu.dwChannelsAudible|=1<<ch;
 }
 
 static void StartSound(int ch)
@@ -348,11 +358,11 @@ INLINE int iGetInterpolationVal(int *SB, int sinc, int spos, int fmod_freq)
      int vl, vr;int gpos;
      vl = (spos >> 6) & ~3;
      gpos = SB[28];
-     vr=(gauss[vl]*(int)gval0)&~2047;
-     vr+=(gauss[vl+1]*gval(1))&~2047;
-     vr+=(gauss[vl+2]*gval(2))&~2047;
-     vr+=(gauss[vl+3]*gval(3))&~2047;
-     fa = vr>>11;
+     vr=(gauss[vl]*(int)gval0) >> 15;
+     vr+=(gauss[vl+1]*gval(1)) >> 15;
+     vr+=(gauss[vl+2]*gval(2)) >> 15;
+     vr+=(gauss[vl+3]*gval(3)) >> 15;
+     fa = vr;
     } break;
    //--------------------------------------------------//
    case 1:                                             // simple interpolation
@@ -950,6 +960,7 @@ static void queue_channel_work(int ns_to, unsigned int silentch)
    d = SkipADSR(&s_chan->ADSRX, d);
    if (d < ns_to) {
     spu.dwChannelsAudible &= ~(1 << ch);
+    s_chan->ADSRX.State = ADSR_RELEASE;
     s_chan->ADSRX.EnvelopeVol = 0;
    }
   }
@@ -1136,6 +1147,7 @@ void do_samples(unsigned int cycles_to, int do_direct)
       do_irq();
      }
    }
+  check_irq_io(spu.spuAddr);
 
   if (unlikely(spu.rvb->dirty))
    REVERBPrep();
@@ -1193,13 +1205,13 @@ static void do_samples_finish(int *SSumLR, int ns_to,
   for (ns = 0; ns < ns_to * 2; )
    {
     d = SSumLR[ns]; SSumLR[ns] = 0;
-    d = d * vol_l >> 15;
+    d = d * vol_l >> 14;
     ssat32_to_16(d);
     *spu.pS++ = d;
     ns++;
 
     d = SSumLR[ns]; SSumLR[ns] = 0;
-    d = d * vol_r >> 15;
+    d = d * vol_r >> 14;
     ssat32_to_16(d);
     *spu.pS++ = d;
     ns++;