forked from mia/Aegisub
93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
// This file is part of FexGenericFilter and (C) 2006 by Hajo Krabbenhöft (tentacle)
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// All rights reserved but the aegisub project is allowed to use it.
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#include "StdAfx.h"
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#include "FexGenericFilter_Include.h"
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void BaseFloatImage_Filter( float* in, int inSx, int inSy, FexFilter* filter, float* out, int outSx, int outSy )
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{
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#define FilterWidth (filter->Width)
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#define FilterWeight(t) (filter->Filter(t))
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float* tmp = new float[outSx*inSy];
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#include "FexGenericFilter_BaseFloatImageApply.h"
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delete []tmp;
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#undef FilterWidth
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#undef FilterWeight
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}
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void BaseFloatImage_FilterSeperate( float* in, int inSx, int inSy, FexFilter* filterX, FexFilter* filterY, float* out, int outSx, int outSy )
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{
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float* tmp = new float[outSx*inSy];
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#define FilterWidth (filterX->Width)
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#define FilterWeight(t) (filterX->Filter(t))
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#define FILTER_NO_Y
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#include "FexGenericFilter_BaseFloatImageApply.h"
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#undef FilterWidth
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#undef FilterWeight
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#undef FILTER_NO_Y
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#define FilterWidth (filterY->Width)
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#define FilterWeight(t) (filterY->Filter(t))
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#define FILTER_NO_X
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#include "FexGenericFilter_BaseFloatImageApply.h"
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#undef FilterWidth
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#undef FilterWeight
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#undef FILTER_NO_X
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delete []tmp;
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}
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void BaseFloatImage_GaussEdgeDetect( float* Img, int sizx, int sizy, float sigma, float* GradX, float* GradY )
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{
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FexFilter_Gauss gauss (sigma);
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FexFilter_GaussDerivation gaussDeriv (sigma);
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BaseFloatImage_FilterSeperate( Img, sizx, sizy, &gaussDeriv, &gauss, GradX, sizx, sizy );
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BaseFloatImage_FilterSeperate( Img, sizx, sizy, &gauss, &gaussDeriv, GradY, sizx, sizy );
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}
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void BaseFloatImage_GaussSmooth( float* Img, int sizx, int sizy, float sigma, float* Out )
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{
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FexFilter_Gauss gauss (sigma);
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BaseFloatImage_Filter( Img, sizx,sizy, &gauss, Out, sizx, sizy );
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}
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#include <math.h>
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inline double sinc( double x )
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{
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x *= 3.1415;
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if( x != 0 )
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return( sin(x) / x );
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return( 1.0 );
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}
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inline double RescaleFilter( double t )
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{
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if( t < 0 )
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t = -t;
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if( t < 3.0 )
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return( sinc(t) * sinc(t/3.0) );
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return( 0.0 );
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}
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void BaseFloatImage_LanczosRescale( float* in, int inSx, int inSy, float* out, int outSx, int outSy )
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{
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#define FilterWidth (3)
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#define FilterWeight(t) (RescaleFilter(t))
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float* tmp = new float[outSx*inSy];
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#include "FexGenericFilter_BaseFloatImageApply.h"
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delete []tmp;
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#undef FilterWidth
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#undef FilterWeight
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}
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