#ifndef FEGaussianBlur_h
#define FEGaussianBlur_h
#if ENABLE(FILTERS)
#include "FilterEffect.h"
#include "Filter.h"
namespace WebCore {
class FEGaussianBlur : public FilterEffect {
public:
static PassRefPtr<FEGaussianBlur> create(Filter*, float, float);
float stdDeviationX() const;
void setStdDeviationX(float);
float stdDeviationY() const;
void setStdDeviationY(float);
static float calculateStdDeviation(float);
virtual void apply();
virtual void dump();
virtual void determineAbsolutePaintRect();
virtual TextStream& externalRepresentation(TextStream&, int indention) const;
static void calculateKernelSize(Filter*, unsigned& kernelSizeX, unsigned& kernelSizeY, float stdX, float stdY);
static inline void kernelPosition(int boxBlur, unsigned& std, int& dLeft, int& dRight);
inline void platformApply(ByteArray* srcPixelArray, ByteArray* tmpPixelArray, unsigned kernelSizeX, unsigned kernelSizeY, IntSize& paintSize);
inline void platformApplyGeneric(ByteArray* srcPixelArray, ByteArray* tmpPixelArray, unsigned kernelSizeX, unsigned kernelSizeY, IntSize& paintSize);
inline void platformApplyNeon(ByteArray* srcPixelArray, ByteArray* tmpPixelArray, unsigned kernelSizeX, unsigned kernelSizeY, IntSize& paintSize);
private:
FEGaussianBlur(Filter*, float, float);
float m_stdX;
float m_stdY;
};
inline void FEGaussianBlur::kernelPosition(int boxBlur, unsigned& std, int& dLeft, int& dRight)
{
switch (boxBlur) {
case 0:
if (!(std % 2)) {
dLeft = std / 2 - 1;
dRight = std - dLeft;
} else {
dLeft = std / 2;
dRight = std - dLeft;
}
break;
case 1:
if (!(std % 2)) {
dLeft++;
dRight--;
}
break;
case 2:
if (!(std % 2)) {
dRight++;
std++;
}
break;
}
}
}
#endif // ENABLE(FILTERS)
#endif // FEGaussianBlur_h