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FFTSPT.C
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1995-02-23
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8KB
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/*
YUV変換→YをFFT→μνデータ表示→フィルタ→逆FFT
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winb.h>
#include <te.h>
#include <fntb.h>
#include <gui.h>
#include <egb.h>
#include <math.h>
#include "tetujin.h"
#include "g_eff.h"
#include "fft.h"
#include "fftspt.h"
#define NOERR 0 /* no error */
static fftFlg = 0 ; /* g_fft2実行後:1, g_fft2_inv実行後:2,
g_fft2_clr実行後:0 */
// ワーク & バッファ
static char *buffer ;
static double *aReal, *aImag ;
static double *bReal, *bImag ;
static char *work ;
static char *cb, *cr ;
static int *a_mul ;
static int exp2 = 0, length ;
static int mx ;
static int aSen ;
static int mSen ;
static int cMax ;
static int aMax ;
static int x1 ;
static int y1 ;
static int x2 ;
static int y2 ;
static int (*read1)() ;
static int (*write)() ;
static int (*mask)() ;
g_fft2_readFlg()
{
return fftFlg ;
}
g_fft2( BASICPARA *para, int ex )
{
mx = para->mix ;
aSen = para->alphaSen ;
mSen = para->maskSen ;
cMax = para->colorMax ;
aMax = para->alphaMax ;
x1 = para->lupx ;
y1 = para->lupy ;
// x2 = para->rdwx ;
// y2 = para->rdwy ;
read1 = para->read1 ;
write = para->write ;
mask = para->mask ;
int i, j, size ;
length = 1 << ex ;
exp2 = ex ;
if( fftFlg )
TL_free( buffer ) ;
fftFlg = 0 ;
size = length*length*sizeof( double )* 4 + sizeof( double )*length*3
+ length*length * 2 + length*length*sizeof( int ) ;
if( (buffer = (char *)TL_malloc( size )) == NULL )
return OUT_OF_MEMORY ;
aReal = (double *)buffer ;
aImag = aReal + length*length ;
bReal = aImag + length*length ;
bImag = bReal + length*length ;
work = (char *)(bImag + length*length) ;
cb = work + sizeof( double )*length*3 ;
cr = cb + length*length ;
a_mul = (int *)( cr + length*length) ;
fftFlg = 1 ;
for( i=0 ; i<length ; i++ )
{
for( j=0 ; j<length ; j++ )
{
char a[4] ;
int y0, u0, v0 ;
read1( x1+j, y1+i, a ) ;
rgbToYuv( a[0], a[1], a[2], &y0, &u0, &v0, cMax ) ;
aReal[ j + i*length ] = (double)y0 ;
aImag[ j + i*length ] = 0 ;
cb[ j + i*length ] = u0 ;
cr[ j + i*length ] = v0 ;
a_mul[ j + i*length ] = 0x10000 ;
}
}
fft_2( work, aReal, aImag, ex, 1 ) ;
fdsp() ;
return NOERR ;
}
g_fft2_mul( BASICPARA *para, int rate )
{
mx = para->mix ;
aSen = para->alphaSen ;
mSen = para->maskSen ;
cMax = para->colorMax ;
aMax = para->alphaMax ;
// x1 = para->lupx ;
// y1 = para->lupy ;
// x2 = para->rdwx ;
// y2 = para->rdwy ;
read1 = para->read1 ;
write = para->write ;
mask = para->mask ;
int i, j, ex ;
if( fftFlg == 0 )return NOERR ;
ex = exp2 ;
if( ex == 0 )return NOERR ;
for( i=0 ; i<length ; i++ )
{
for( j=0 ; j<length ; j++ )
{
int i2, j2 ;
char a[4] ;
read1( x1+j, y1+i, a ) ;
if( a[3] )
{
a_mul[ j + i*length ] = 0x10000 * rate / 256 ;
i2 = length - i ;
j2 = length - j ;
if( ( i2<length ) && ( j2<length ) )
a_mul[ j2 + i2*length ] = a_mul[ j + i*length ] ;
}
}
}
fdsp() ;
fftFlg = 1 ;
return NOERR ;
}
g_fft2_fix( BASICPARA *para )
{
mx = para->mix ;
aSen = para->alphaSen ;
mSen = para->maskSen ;
cMax = para->colorMax ;
aMax = para->alphaMax ;
// x1 = para->lupx ;
// y1 = para->lupy ;
// x2 = para->rdwx ;
// y2 = para->rdwy ;
read1 = para->read1 ;
write = para->write ;
mask = para->mask ;
int i, j, ex ;
if( fftFlg == 0 )return NOERR ;
ex = exp2 ;
if( ex == 0 )return NOERR ;
for( i=0 ; i<length ; i++ )
{
for( j=0 ; j<length ; j++ )
{
aReal[ j + i*length ]
= aReal[ j + i*length ] * a_mul[ j + i*length ] / 0x10000 ;
aImag[ j + i*length ]
= aImag[ j + i*length ] * a_mul[ j + i*length ] / 0x10000 ;
a_mul[ j + i*length ] = 0x10000 ;
}
}
fdsp() ;
fftFlg = 1 ;
return NOERR ;
}
g_fft2_can( BASICPARA *para )
{
mx = para->mix ;
aSen = para->alphaSen ;
mSen = para->maskSen ;
cMax = para->colorMax ;
aMax = para->alphaMax ;
// x1 = para->lupx ;
// y1 = para->lupy ;
// x2 = para->rdwx ;
// y2 = para->rdwy ;
read1 = para->read1 ;
write = para->write ;
mask = para->mask ;
int i, j, ex ;
if( fftFlg == 0 )return NOERR ;
ex = exp2 ;
if( ex == 0 )return NOERR ;
for( i=0 ; i<length ; i++ )
{
for( j=0 ; j<length ; j++ )
{
a_mul[ j + i*length ] = 0x10000 ;
}
}
fdsp() ;
fftFlg = 1 ;
return NOERR ;
}
g_fft2_inv( BASICPARA *para )
{
mx = para->mix ;
aSen = para->alphaSen ;
mSen = para->maskSen ;
cMax = para->colorMax ;
aMax = para->alphaMax ;
// x1 = para->lupx ;
// y1 = para->lupy ;
// x2 = para->rdwx ;
// y2 = para->rdwy ;
read1 = para->read1 ;
write = para->write ;
mask = para->mask ;
int i, j, ex ;
if( fftFlg != 1 )return NOERR ;
ex = exp2 ;
if( ex == 0 )return NOERR ;
for( i=0 ; i<length ; i++ )
{
for( j=0 ; j<length ; j++ )
{
bReal[ j + i*length ]
= aReal[ j + i*length ] * a_mul[ j + i*length ] / 0x10000 ;
bImag[ j + i*length ]
= aImag[ j + i*length ] * a_mul[ j + i*length ] / 0x10000 ;
}
}
fft_2( work, bReal, bImag, ex, -1 ) ;
for( i=0 ; i<length ; i++ )
{
for( j=0 ; j<length ; j++ )
{
char a[4] ;
int y0, r0, g0, b0 ;
y0 = bReal[ j + i*length ] ;
yuvToRgb( y0, cb[ j + i*length ], cr[ j + i*length ],
&r0, &g0, &b0, cMax ) ;
a[0] = r0 ;
a[1] = g0 ;
a[2] = b0 ;
a[3] = 0 ;
write( x1+j, y1+i, a ) ;
}
}
fftFlg = 2 ;
return NOERR ;
}
g_fft2_dsp( BASICPARA *para )
{
mx = para->mix ;
aSen = para->alphaSen ;
mSen = para->maskSen ;
cMax = para->colorMax ;
aMax = para->alphaMax ;
// x1 = para->lupx ;
// y1 = para->lupy ;
// x2 = para->rdwx ;
// y2 = para->rdwy ;
read1 = para->read1 ;
write = para->write ;
mask = para->mask ;
if( fftFlg != 2 )return NOERR ;
fdsp() ;
fftFlg = 1 ;
return NOERR ;
}
g_fft2_clr()
{
if( fftFlg )
TL_free( buffer ) ;
fftFlg = 0 ;
return NOERR ;
}
static int fdsp()
{
int i, j ;
for( i=0 ; i<length ; i++ )
{
for( j=0 ; j<length ; j++ )
{
char a[4] ;
double abs ;
abs = aReal[ j + i*length ]*aReal[ j + i*length ]
+ aImag[ j + i*length ]*aImag[ j + i*length ] ;
abs = sqrt( abs ) * a_mul[ j + i*length ] / 0x10000 ;
abs = log( abs ) * 255 / log( 255.0 ) ;
if( abs > 255 )abs = 255 ;
if( abs < 0 )abs = 0 ;
a[0] = abs ;
a[1] = abs ;
a[2] = abs ;
write( x1+j, y1+i, a ) ;
}
}
return NOERR ;
}
static rgbToYuv( int r0, int g0, int b0, int *y0, int *u0, int *v0, int max )
{
int y, cb, cr ;
y = 19595*r0 + 38470*g0 + 7471*b0 ;
cb = -11049*r0 - 21699*g0 + 32748*b0 ;
cr = 32755*r0 -27427*g0 -5328*b0 ;
*y0 = ( ((y/max)*219) >> 16 ) + 16 ;
*u0 = ( ((cb/max)*224) >> 16 ) + 128 ;
*v0 = ( ((cr/max)*224) >> 16 ) + 128 ;
if( *y0 < 0 )*y0 = 0 ;
if( *y0 > 255 )*y0 = 255 ;
if( *u0 < 0 )*u0 = 0 ;
if( *u0 > 255 )*u0 = 255 ;
if( *v0 < 0 )*v0 = 0 ;
if( *v0 > 255 )*v0 = 255 ;
return NOERR ;
}
static yuvToRgb( int y0, int u0, int v0, int *r0, int *g0, int *b0, int max )
{
y0 = (( y0 - 16 ) * max )/219 ;
u0 = (( u0 -128 ) * max )/224 ;
v0 = (( v0 -128 ) * max )/224 ;
*r0 = ( 65536*y0 + 4*u0 + 91920*v0 ) >> 16 ;
*g0 = ( 65536*y0 - 22569*u0 - 46819*v0 ) >> 16 ;
*b0 = ( 65536*y0 + 116198*u0 - 9*v0 ) >> 16 ;
if( *r0 < 0 )*r0 = 0 ;
if( *r0 > max )*r0 = max ;
if( *g0 < 0 )*g0 = 0 ;
if( *g0 > max )*g0 = max ;
if( *b0 < 0 )*b0 = 0 ;
if( *b0 > max )*b0 = max ;
return NOERR ;
}