gd_compositor.h

#ifndef GD_COMPOSITOR_H
#define GD_COMPOSITOR_H
 
#include "gd_vector2d_private.h"
#include <stddef.h>
#include <stdint.h>
 
typedef struct {
    float r, g, b, a;
} gdPremulPixelF;
 
int gdCompositeOperatorIsValid(gdCompositeOperator op);
int gdCompositeOperatorIsUnbounded(gdCompositeOperator op);
gdPremulPixelF gdCompositePixel(gdCompositeOperator op, gdPremulPixelF src, gdPremulPixelF dst,
                                float coverage);
void gdCompositeSpan(gdCompositeOperator op, const gdPremulPixelF *src, ptrdiff_t src_stride,
                     gdPremulPixelF *dst, const float *coverage, size_t n);
gdPremulPixelF gdCompositePixelFromArgb32(uint32_t pixel);
uint32_t gdCompositePixelToArgb32(gdPremulPixelF pixel);
gdPremulPixelF gdCompositePixelFromGd(int pixel);
int gdCompositePixelToGd(gdPremulPixelF pixel);
 
#endif