compat hacks for this old version of fceu

[fceu.git] / sound.c

diff --git a/sound.c b/sound.c
index f6e6a34..70ce2d4 100644 (file)
--- a/sound.c
+++ b/sound.c
@@ -40,6 +40,7 @@
 #include "sound.h"
 
 uint32 Wave[2048+512];
+int32 WaveHi[40000]; // unused
 int16 WaveFinalMono[2048+512];
 
 EXPSOUND GameExpSound={0,0,0,0,0,0};
@@ -877,6 +878,8 @@ static int32 flt_acc=0, flt_acc2=0;
 static void FilterSound(uint32 *in, int16 *outMono, int count)
 {
 // static int min=0, max=0;
+ int sh=2;
+ if (soundvol < 5) sh += 5 - soundvol;
 
  for(;count;count--,in++,outMono++)
  {
@@ -888,7 +891,7 @@ static void FilterSound(uint32 *in, int16 *outMono, int count)
   flt_acc2+= (int32) (((int64)((diff-flt_acc2)*lowp))>>16);
   *in=0;
 
-  *outMono = flt_acc2*7 >> 2; // * 1.75
+  *outMono = flt_acc2*7 >> sh; // * 7 >> 2 = * 1.75
 //  if (acc2 < min) { printf("min: %i %04x\n", acc2, acc2); min = acc2; }
 //  if (acc2 > max) { printf("max: %i %04x\n", acc2, acc2); max = acc2; }
  }