#ifndef FEComposite_h
#define FEComposite_h
#include "platform/graphics/filters/Filter.h"
#include "platform/graphics/filters/FilterEffect.h"
#include "wtf/text/WTFString.h"
namespace WebCore {
enum CompositeOperationType {
FECOMPOSITE_OPERATOR_UNKNOWN = 0,
FECOMPOSITE_OPERATOR_OVER = 1,
FECOMPOSITE_OPERATOR_IN = 2,
FECOMPOSITE_OPERATOR_OUT = 3,
FECOMPOSITE_OPERATOR_ATOP = 4,
FECOMPOSITE_OPERATOR_XOR = 5,
FECOMPOSITE_OPERATOR_ARITHMETIC = 6
};
class PLATFORM_EXPORT FEComposite : public FilterEffect {
public:
static PassRefPtr<FEComposite> create(Filter*, const CompositeOperationType&, float, float, float, float);
CompositeOperationType operation() const;
bool setOperation(CompositeOperationType);
float k1() const;
bool setK1(float);
float k2() const;
bool setK2(float);
float k3() const;
bool setK3(float);
float k4() const;
bool setK4(float);
virtual void correctFilterResultIfNeeded() OVERRIDE;
virtual FloatRect determineAbsolutePaintRect(const FloatRect& requestedRect) OVERRIDE;
virtual TextStream& externalRepresentation(TextStream&, int indention) const OVERRIDE;
virtual PassRefPtr<SkImageFilter> createImageFilter(SkiaImageFilterBuilder*) OVERRIDE;
protected:
virtual bool requiresValidPreMultipliedPixels() OVERRIDE { return m_type != FECOMPOSITE_OPERATOR_ARITHMETIC; }
private:
FEComposite(Filter*, const CompositeOperationType&, float, float, float, float);
virtual void applySoftware() OVERRIDE;
inline void platformArithmeticSoftware(Uint8ClampedArray* source, Uint8ClampedArray* destination,
float k1, float k2, float k3, float k4);
template <int b1, int b4>
static inline void computeArithmeticPixelsNeon(unsigned char* source, unsigned char* destination,
unsigned pixelArrayLength, float k1, float k2, float k3, float k4);
static inline void platformArithmeticNeon(unsigned char* source, unsigned char* destination,
unsigned pixelArrayLength, float k1, float k2, float k3, float k4);
CompositeOperationType m_type;
float m_k1;
float m_k2;
float m_k3;
float m_k4;
};
}
#endif