X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=plugins%2Fdfsound%2Fspu.c;h=7d3f1a0efc2a479d48a41fafb0ae76424ada29eb;hb=2b30c1291db9d9801d51cf85f71f40fe54958898;hp=b89ab1af8c120ba4a25a379a5da9a94f110e8bef;hpb=ee9afdbd4d9e0aee75dd9e17878c76f1c7236d04;p=pcsx_rearmed.git

diff --git a/plugins/dfsound/spu.c b/plugins/dfsound/spu.c
index b89ab1af..7d3f1a0e 100644
--- a/plugins/dfsound/spu.c
+++ b/plugins/dfsound/spu.c
@@ -692,7 +692,7 @@ static void noinline do_decode_bufs(int which, int start, int count)
 static int do_samples(int forced_updates)
 {
  int volmult = iVolume;
- int ns,ns_from,ns_to;
+ int ns,ns_from,ns_to,ns_len;
  int ch,d,silentch;
  int bIRQReturn=0;
 
@@ -707,8 +707,6 @@ static int do_samples(int forced_updates)
 
  while(!bIRQReturn)
   {
-   cycles_since_update = 0;
-
    ns_from=0;
    ns_to=NSSIZE;
    ch=0;
@@ -742,21 +740,22 @@ static int do_samples(int forced_updates)
          lastch=ch; 
          lastns=ns_to=d;
         }
+       ns_len = ns_to - ns_from;
 
        MixADSR(ch, ns_from, ns_to);
 
        if(ch==1 || ch==3)
         {
-         do_decode_bufs(ch/2, ns_from, ns_to-ns_from);
+         do_decode_bufs(ch/2, ns_from, ns_len);
          decode_dirty_ch |= 1<<ch;
         }
 
        if(s_chan[ch].bFMod==2)                         // fmod freq channel
-        memcpy(iFMod, ChanBuf, sizeof(iFMod));
-       else if(s_chan[ch].bRVBActive)
-        mix_chan_rvb(ns_from,ns_to-ns_from,s_chan[ch].iLeftVolume,s_chan[ch].iRightVolume);
+        memcpy(&iFMod[ns_from], &ChanBuf[ns_from], ns_len * sizeof(iFMod[0]));
+       if(s_chan[ch].bRVBActive)
+        mix_chan_rvb(ns_from, ns_len, s_chan[ch].iLeftVolume, s_chan[ch].iRightVolume);
        else
-        mix_chan(ns_from,ns_to-ns_from,s_chan[ch].iLeftVolume,s_chan[ch].iRightVolume);
+        mix_chan(ns_from, ns_len, s_chan[ch].iLeftVolume, s_chan[ch].iRightVolume);
       }
     }
 
@@ -837,6 +836,8 @@ static int do_samples(int forced_updates)
     ns++;
    }
 
+   cycles_since_update -= PSXCLK / 44100 * NSSIZE;
+
   //////////////////////////////////////////////////////                   
   // special irq handling in the decode buffers (0x0000-0x1000)
   // we know: 
@@ -888,8 +889,15 @@ static int do_samples(int forced_updates)
     if(forced_updates == 0 && out_current->busy())
      break;
    }
+
+  if(cycles_since_update <= -PSXCLK/60 / 4)
+   break;
  }
 
+ // this may cause desync, but help audio when the emu can't keep up..
+ if(cycles_since_update < 0)
+  cycles_since_update = 0;
+
  return 0;
 }
 
@@ -900,7 +908,6 @@ static int do_samples(int forced_updates)
 
 void CALLBACK SPUasync(unsigned long cycle)
 {
- static int old_ctrl;
  int forced_updates = 0;
  int do_update = 0;
 
@@ -915,17 +922,9 @@ void CALLBACK SPUasync(unsigned long cycle)
    had_dma = 0;
   }
 
- if((spuCtrl&CTRL_IRQ) && (((spuCtrl^old_ctrl)&CTRL_IRQ) // irq was enabled
-    || cycles_since_update > PSXCLK/60 / 4)) {
-  do_update = 1;
-  forced_updates = cycles_since_update / (PSXCLK/44100) / NSSIZE;
- }
- // with no irqs, once per frame should be fine (using a bit more because of BIAS)
- else if(cycles_since_update > PSXCLK/60 * 5/4)
+ if(cycles_since_update > PSXCLK/60 * 5/4)
   do_update = 1;
 
- old_ctrl = spuCtrl;
-
  if(do_update)
   do_samples(forced_updates);
 }
@@ -1122,6 +1121,10 @@ void CALLBACK SPUregisterCDDAVolume(void (CALLBACK *CDDAVcallback)(unsigned shor
  cddavCallback = CDDAVcallback;
 }
 
+void CALLBACK SPUregisterScheduleCb(void (CALLBACK *callback)(unsigned int))
+{
+}
+
 // COMMON PLUGIN INFO FUNCS
 /*
 char * CALLBACK PSEgetLibName(void)