X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=filter098.c;fp=filter098.c;h=0000000000000000000000000000000000000000;hb=778873069e1caaf3afbe7e99b9cefa4f770959c0;hp=795208c0770255926029116dae7b8371bd304391;hpb=a384bf449483e62637ce05a60ff4b06730a19934;p=fceu.git

diff --git a/filter098.c b/filter098.c
deleted file mode 100644
index 795208c..0000000
--- a/filter098.c
+++ /dev/null
@@ -1,217 +0,0 @@
-#include <math.h>
-#include <stdio.h>
-#include "types.h"
-
-#include "sound.h"
-#include "x6502.h"
-#include "fce.h"
-#include "filter098.h"
-#include "svga.h"
-
-#include "fcoeffs098.h"
-
-static uint32 mrindex;
-static uint32 mrratio;
-
-#if 0
-void SexyFilter2(int32 *in, int32 count)
-{
- #ifdef moo
- static int64 acc=0;
- double x,p;
- int64 c;
-
- x=2*M_PI*6000/FSettings.SndRate;
- p=((double)2-cos(x)) - sqrt(pow((double)2-cos(x),2) -1 );
-
- c=p*0x100000;
- //printf("%f\n",(double)c/0x100000);
- #endif
- static int64 acc=0;
-
- while(count--)
- {
-  int64 dropcurrent;
-  dropcurrent=((*in<<16)-acc)>>3;
-
-  acc+=dropcurrent;
-  *in=acc>>16;
-  in++;
-  //acc=((int64)0x100000-c)* *in + ((c*acc)>>20);
-  //*in=acc>>20;
-  //in++;
- }
-}
-#endif
-
-void SexyFilter(int32 *in, int16 *out, int32 count)
-{
- static int64 acc1=0,acc2=0;
- int32 mul1,mul2,vmul;
-
- mul1=(94<<16)/FSettings.SndRate;
- mul2=(24<<16)/FSettings.SndRate;
- vmul=(FSettings.SoundVolume<<16)*3/4/100;
-
-#if 0
- if(FSettings.soundq) vmul/=4;
- else
-#endif
-  vmul*=2;			/* TODO:  Increase volume in low quality sound rendering code itself */
-
- while(count)
- {
-  int64 ino=(int64)*in*vmul;
-  acc1+=((ino-acc1)*mul1)>>16;
-  acc2+=((ino-acc1-acc2)*mul2)>>16;
-  //printf("%d ",*in);
-  *in=0;
-  {
-   int32 t=(acc1-ino+acc2)>>16;
-   //if(t>32767 || t<-32768) printf("Flow: %d\n",t);
-   if(t>32767) t=32767;
-   if(t<-32768) t=-32768;
-   *out=t;
-  }
-  in++;
-  out++;
-  count--;
- }
-}
-
-/* Returns number of samples written to out. */
-/* leftover is set to the number of samples that need to be copied
-   from the end of in to the beginning of in.
-*/
-
-//static uint32 mva=1000;
-
-/* This filtering code assumes that almost all input values stay below 32767.
-   Do not adjust the volume in the wlookup tables and the expansion sound
-   code to be higher, or you *might* overflow the FIR code.
-*/
-
-#if 0
-int32 NeoFilterSound(int32 *in, int32 *out, uint32 inlen, int32 *leftover)
-{
-	uint32 x;
-	uint32 max;
-	int32 *outsave=out;
-	int32 count=0;
-
-//	for(x=0;x<inlen;x++)
-//	{
-//	 if(in[x]>mva){ mva=in[x]; printf("%ld\n",in[x]);}
-//	}
-        max=(inlen-1)<<16;
-
-	if(FSettings.soundq==2)
-         for(x=mrindex;x<max;x+=mrratio)
-         {
-          int32 acc=0,acc2=0;
-          unsigned int c;
-          int32 *S,*D;
-
-          for(c=SQ2NCOEFFS,S=&in[(x>>16)-SQ2NCOEFFS],D=sq2coeffs;c;c--,D++)
-          {
-           acc+=(S[c]**D)>>6;
-           acc2+=(S[1+c]**D)>>6;
-          }
-
-          acc=((int64)acc*(65536-(x&65535))+(int64)acc2*(x&65535))>>(16+11);
-          *out=acc;
-          out++;
-          count++;
-         }
-	else
-         for(x=mrindex;x<max;x+=mrratio)
-         {
-          int32 acc=0,acc2=0;
-          unsigned int c;
-          int32 *S,*D;
-
-          for(c=NCOEFFS,S=&in[(x>>16)-NCOEFFS],D=coeffs;c;c--,D++)
- 	  {
- 	   acc+=(S[c]**D)>>6;
- 	   acc2+=(S[1+c]**D)>>6;
- 	  }
-
-          acc=((int64)acc*(65536-(x&65535))+(int64)acc2*(x&65535))>>(16+11);
-          *out=acc;
-          out++;
-          count++;
-         }
-
-        mrindex=x-max;
-
-	if(FSettings.soundq==2)
-	{
-         mrindex+=SQ2NCOEFFS*65536;
-         *leftover=SQ2NCOEFFS+1;
-	}
-	else
-	{
-         mrindex+=NCOEFFS*65536;
-         *leftover=NCOEFFS+1;
-	}
-
-	if(GameExpSound.NeoFill)
-	 GameExpSound.NeoFill(outsave,count);
-
-	SexyFilter(outsave,outsave,count);
-	if(FSettings.lowpass)
-	 SexyFilter2(outsave,count);
-	return(count);
-}
-#endif
-
-void MakeFilters(int32 rate)
-{
- int32 *tabs[6]={C44100NTSC,C44100PAL,C48000NTSC,C48000PAL,C96000NTSC,
-        C96000PAL};
-#if 0
- int32 *sq2tabs[6]={SQ2C44100NTSC,SQ2C44100PAL,SQ2C48000NTSC,SQ2C48000PAL,
-	SQ2C96000NTSC,SQ2C96000PAL};
-#endif
-
- int32 *tmp;
- int32 x;
- uint32 nco;
-
-#if 0
- if(FSettings.soundq==2)
-  nco=SQ2NCOEFFS;
- else
-#endif
-  nco=NCOEFFS;
-
- mrindex=(nco+1)<<16;
- mrratio=(PAL?(int64)(PAL_CPU*65536):(int64)(NTSC_CPU*65536))/rate;
-
-#if 0
- if(FSettings.soundq==2)
-  tmp=sq2tabs[(PAL?1:0)|(rate==48000?2:0)|(rate==96000?4:0)];
- else
-#endif
-  tmp=tabs[(PAL?1:0)|(rate==48000?2:0)|(rate==96000?4:0)];
-
-#if 0
- if(FSettings.soundq==2)
-  for(x=0;x<SQ2NCOEFFS>>1;x++)
-   sq2coeffs[x]=sq2coeffs[SQ2NCOEFFS-1-x]=tmp[x];
- else
-#endif
-  for(x=0;x<NCOEFFS>>1;x++)
-   coeffs[x]=coeffs[NCOEFFS-1-x]=tmp[x];
-
- #ifdef MOO
- /* Some tests involving precision and error. */
- {
-  static int64 acc=0;
-  int x;
-  for(x=0;x<SQ2NCOEFFS;x++)
-   acc+=(int64)32767*sq2coeffs[x];
-  printf("Foo: %lld\n",acc);
- }
- #endif
-}