include/convolve.h

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/*
 * Copyright (c) 2011, Tom Distler (http://tdistler.com)
 * All rights reserved.
 *
 * The BSD License
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 *   this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright notice,
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#ifndef _CONVOLVE_H_
#define _CONVOLVE_H_

typedef float (*_iqa_get_pixel)(const float *img, int w, int h, int x, int y, float bnd_const);

float KBND_SYMMETRIC(const float *img, int w, int h, int x, int y, float bnd_const);
float KBND_REPLICATE(const float *img, int w, int h, int x, int y, float bnd_const);
float KBND_CONSTANT(const float *img, int w, int h, int x, int y, float bnd_const);


struct _kernel {
    float *kernel;          
    int w;                  
    int h;                  
    int normalized;         
    _iqa_get_pixel bnd_opt; 
    float bnd_const;        
};

void _iqa_convolve(float *img, int w, int h, const struct _kernel *k, float *result, int *rw, int *rh);

int _iqa_img_filter(float *img, int w, int h, const struct _kernel *k, float *result);

float _iqa_filter_pixel(const float *img, int w, int h, int x, int y, const struct _kernel *k, const float kscale);


#endif /*_CONVOLVE_H_*/