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/*
FLAM3 - cosmic recursive fractal flames
Copyright (C) 1992-2009 Spotworks LLC
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef filters_included
#define filters_included
#include "private.h"
#define DE_THRESH 100
/* Spatial filter kernels */
#define flam3_gaussian_kernel 0
#define flam3_hermite_kernel 1
#define flam3_box_kernel 2
#define flam3_triangle_kernel 3
#define flam3_bell_kernel 4
#define flam3_b_spline_kernel 5
#define flam3_lanczos3_kernel 6
#define flam3_lanczos2_kernel 7
#define flam3_mitchell_kernel 8
#define flam3_blackman_kernel 9
#define flam3_catrom_kernel 10
#define flam3_hamming_kernel 11
#define flam3_hanning_kernel 12
#define flam3_quadratic_kernel 13
/* Temporal filters */
#define flam3_temporal_box 0
#define flam3_temporal_gaussian 1
#define flam3_temporal_exp 2
typedef struct {
int max_filtered_counts;
int max_filter_index;
int kernel_size;
double *filter_widths;
double *filter_coefs;
} flam3_de_helper;
extern double flam3_spatial_support[flam3_num_spatialfilters];
double flam3_spatial_filter(int knum, double x);
int flam3_create_spatial_filter(flam3_frame *spec, int field, double **filter);
flam3_de_helper flam3_create_de_filters(double max_rad, double min_rad, double curve, int ss);
double flam3_create_temporal_filter(int numsteps, int filter_type, double filter_exp, double filter_width,
double **temporal_filter, double **temporal_deltas);
#endif
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