spu: check buffer state less often

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

diff --git a/plugins/dfsound/spu.c b/plugins/dfsound/spu.c
index bf02946..1456a21 100644 (file)
--- a/plugins/dfsound/spu.c
+++ b/plugins/dfsound/spu.c
@@ -24,7 +24,8 @@
 
 #include "externals.h"
 #include "registers.h"
-#include "dsoundoss.h"
+#include "out.h"
+#include "arm_features.h"
 
 #ifdef ENABLE_NLS
 #include <libintl.h>
@@ -243,7 +244,7 @@ INLINE void InterpolateDown(int ch)
 // helpers for gauss interpolation
 
 #define gval0 (((short*)(&s_chan[ch].SB[29]))[gpos])
-#define gval(x) (((short*)(&s_chan[ch].SB[29]))[(gpos+x)&3])
+#define gval(x) ((int)((short*)(&s_chan[ch].SB[29]))[(gpos+x)&3])
 
 #include "gauss_i.h"
 
@@ -296,8 +297,6 @@ INLINE void StartSound(int ch)
       {s_chan[ch].spos=0x30000L;s_chan[ch].SB[28]=0;}  // -> start with more decoding
  else {s_chan[ch].spos=0x10000L;s_chan[ch].SB[31]=0;}  // -> no/simple interpolation starts with one 44100 decoding
 
- check_irq(ch, s_chan[ch].pCurr);                      // just in case
-
  dwNewChannel&=~(1<<ch);                               // clear new channel bit
 }
 
@@ -388,7 +387,7 @@ INLINE int iGetInterpolationVal(int ch, int spos)
      int vl, vr;int gpos;
      vl = (spos >> 6) & ~3;
      gpos = s_chan[ch].SB[28];
-     vr=(gauss[vl]*gval0)&~2047;
+     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;
@@ -460,6 +459,8 @@ static int decode_block(int ch)
 
   start = s_chan[ch].pLoop;
  }
+ else
+  ret = check_irq(ch, start);              // hack, see check_irq below..
 
  predict_nr=(int)start[0];
  shift_factor=predict_nr&0xf;
@@ -473,14 +474,14 @@ static int decode_block(int ch)
 
  start+=16;
 
- if(flags&1)                               // 1: stop/loop
+ if(flags&1) {                             // 1: stop/loop
   start = s_chan[ch].pLoop;
+  ret |= check_irq(ch, start);             // hack.. :(
+ }
 
  if (start - spuMemC >= 0x80000)
   start = spuMemC;
 
- ret = check_irq(ch, start);
-
  s_chan[ch].pCurr = start;                 // store values for next cycle
  s_chan[ch].prevflags = flags;
 
@@ -492,6 +493,7 @@ static int skip_block(int ch)
 {
  unsigned char *start = s_chan[ch].pCurr;
  int flags = start[1];
+ int ret = check_irq(ch, start);
 
  if(s_chan[ch].prevflags & 1)
   start = s_chan[ch].pLoop;
@@ -507,7 +509,7 @@ static int skip_block(int ch)
  s_chan[ch].pCurr = start;
  s_chan[ch].prevflags = flags;
 
- return check_irq(ch, start);
+ return ret;
 }
 
 #define make_do_samples(name, fmod_code, interp_start, interp1_code, interp2_code, interp_end) \
@@ -532,10 +534,7 @@ static int do_samples_##name(int ch, int ns, int ns_to) \
     sbpos = 0;                               \
     d = decode_block(ch);                    \
     if(d)                                    \
-    {                                        \
-     ret = ns;                               \
-     goto out;                               \
-    }                                        \
+     ret = ns_to = ns + 1;                   \
    }                                         \
                                              \
    fa = SB[sbpos++];                         \
@@ -547,7 +546,6 @@ static int do_samples_##name(int ch, int ns, int ns_to) \
   spos += sinc;                              \
  }                                           \
                                              \
-out:                                         \
  s_chan[ch].sinc = sinc;                     \
  s_chan[ch].spos = spos;                     \
  s_chan[ch].iSBPos = sbpos;                  \
@@ -584,11 +582,14 @@ make_do_samples(simple, , ,
 static int do_samples_noise(int ch, int ns, int ns_to)
 {
  int level, shift, bit;
+ int ret = -1, d;
 
  s_chan[ch].spos += s_chan[ch].sinc * (ns_to - ns);
  while (s_chan[ch].spos >= 28*0x10000)
  {
-  skip_block(ch);
+  d = skip_block(ch);
+  if (d)
+   ret = ns_to;
   s_chan[ch].spos -= 28*0x10000;
  }
 
@@ -612,10 +613,10 @@ static int do_samples_noise(int ch, int ns, int ns_to)
   ChanBuf[ns] = (signed short)dwNoiseVal;
  }
 
- return -1;
+ return ret;
 }
 
-#ifdef __arm__
+#ifdef HAVE_ARMV5
 // asm code; lv and rv must be 0-3fff
 extern void mix_chan(int start, int count, int lv, int rv);
 extern void mix_chan_rvb(int start, int count, int lv, int rv);
@@ -688,25 +689,18 @@ static int do_samples(int forced_updates)
  int ch,d,silentch;
  int bIRQReturn=0;
 
- while(1)
-  {
-   // ok, at the beginning we are looking if there is
-   // enuff free place in the dsound/oss buffer to
-   // fill in new data, or if there is a new channel to start.
-   // if not, we wait (thread) or return (timer/spuasync)
-   // until enuff free place is available/a new channel gets
-   // started
-
-   if(!forced_updates && SoundGetBytesBuffered())      // still enuff data in sound buffer?
-    {
-     return 0;
-    }
+ // ok, at the beginning we are looking if there is
+ // enuff free place in the dsound/oss buffer to
+ // fill in new data, or if there is a new channel to start.
+ // if not, we return until enuff free place is available
+ // /a new channel gets started
 
-   cycles_since_update = 0;
-   if(forced_updates > 0)
-    forced_updates--;
+ if(!forced_updates && out_current->busy())            // still enuff data in sound buffer?
+  return 0;
 
-   //--------------------------------------------------// continue from irq handling in timer mode? 
+ while(!bIRQReturn)
+  {
+   cycles_since_update = 0;
 
    ns_from=0;
    ns_to=NSSIZE;
@@ -740,8 +734,6 @@ static int do_samples(int forced_updates)
          bIRQReturn=1;
          lastch=ch; 
          lastns=ns_to=d;
-         if(d==0)
-          break;
         }
 
        MixADSR(ch, ns_from, ns_to);
@@ -864,6 +856,7 @@ static int do_samples(int forced_updates)
      {
       //printf("decoder irq %x\n", decode_pos);
       do_irq();
+      bIRQReturn = 1;
      }
    }
   decode_pos = (decode_pos + NSSIZE) & 0x1ff;
@@ -872,12 +865,21 @@ static int do_samples(int forced_updates)
 
   // feed the sound
   // wanna have around 1/60 sec (16.666 ms) updates
-  if (iCycle++ > 16/FRAG_MSECS)
+  if (iCycle++ >= 16/FRAG_MSECS)
    {
-    SoundFeedStreamData((unsigned char *)pSpuBuffer,
-                        ((unsigned char *)pS) - ((unsigned char *)pSpuBuffer));
+    out_current->feed(pSpuBuffer, (unsigned char *)pS - pSpuBuffer);
     pS = (short *)pSpuBuffer;
     iCycle = 0;
+
+    if(!forced_updates && out_current->busy())
+     break;
+   }
+
+  if(forced_updates > 0)
+   {
+    forced_updates--;
+    if(forced_updates == 0 && out_current->busy())
+     break;
    }
  }
 
@@ -1058,7 +1060,7 @@ long CALLBACK SPUclose(void)
 
  bSPUIsOpen = 0;                                       // no more open
 
- RemoveSound();                                        // no more sound handling
+ out_current->finish();                                // no more sound handling
 
  return 0;
 }