/*
 *		crapulator.c
 */

#include  <stdio.h>
#include  <stdlib.h>

#include  <floatimg.h>

#include  "fonctions.h"
#include  "crapulator.h"
#include  "glitches.h"
#include  "sfx.h"

/* -------------------------------------------------------------- */
static int effect_3(FloatImg *image)
{
float		value;
int		foo;

value = fimg_get_maxvalue(image);
fimg_mul_cste(image, -1.0);
fimg_add_cste(image, value);
foo = fimg_count_negativ(image);
if (foo) {
	fimg_dump_to_file(image, "err.fimg", 0);
	fprintf(stderr, "%s negativ %d\n",
				__func__, foo);
	return -78;
	}
return 0;
}
/* -------------------------------------------------------------- */
static int insitu_ctr2x2(FloatImg *pimg)
{
FloatImg		img;
int 			retval;

fimg_clone(pimg, &img, 0);
retval = fimg_contour_2x2(pimg, &img, 0);
if (retval) {
	fprintf(stderr, "%s : err contour %d\n",
			__func__, retval);
	exit(1);
	}
fimg_copy_data(&img, pimg);
fimg_destroy(&img);

return 0;
}
/* -------------------------------------------------------------- */
static int insitu_filtre3x3(FloatImg *pimg)
{
FloatImg		img;
int 			retval;

FimgFilter3x3	filtre = {
		{
		1.0,	2.0,	1.0,
		2.0,	4.0,	2.0,
		1.0,	2.0,	1.0,
		},
	16.0,	0.0
	};

fimg_clone(pimg, &img, 0);
retval = fimg_filter_3x3(pimg, &img, &filtre);
if (retval) {
	fprintf(stderr, "%s error %d on filter\n", __func__, retval);
	exit(1);
	}
fimg_killborders(&img);		/* XXX WTF OMG */
fimg_copy_data(&img, pimg);
fimg_destroy(&img);

return retval;
}
/* -------------------------------------------------------------- */
static int desaturate(FloatImg *pimg)
{
FloatImg		img;
int 			retval;
fimg_clone(pimg, &img, 0);
retval = fimg_desaturate(pimg, &img, 0);
if (retval) {
	fprintf(stderr, "%s : err desaturate %d\n",
			__func__, retval);
	exit(1);
	}
fimg_copy_data(&img, pimg);
fimg_destroy(&img);

return 0;
}
/* -------------------------------------------------------------- */
/*
 *	This is the main filter engine used both for input and
 *	output processing. It can be called by the filterstack
 *	processor.
 */

#define DEBUG_THIS_CRAP		0

int crapulator(FloatImg *image, int idFx, float fval)
{
int			retval;
// FloatImg		imgtmp;

#if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( %p %d %f )\n", __func__,
				image, idFx, fval);
#endif

retval = 0;

#if DEBUG_THIS_CRAP
static int		count = 0;
int			flag_debug = 0;
if (666==count) {
	flag_debug = 1;
	fprintf(stderr, "DEBUG PT 1 in %s:%d\n", __func__, __LINE__);
	fimg_save_as_png(image, "crap_before.png", 0);
	}
#endif

switch (idFx) {
	case 0:		/* DO NOTHING */
		retval = 0;			break;
	case 1:
		fimg_cos_01(image, image,
				fimg_get_maxvalue(image));
		break;
	case 2:
		fimg_cos_010(image, image,
				fimg_get_maxvalue(image));
		break;
	case 3:
		retval = effect_3(image);
		break;
	case 4:
		brotche_rand48_a(image, 0.20,
				fimg_get_maxvalue(image));
		break;
	case 5:
		brotche_rand48_b(image, 0.10,
				fimg_get_maxvalue(image)*0.8);
		break;
	case 6:
		retval = fimg_killcolors_a(image, 0.0);
		break;
	case 7:
		retval = fimg_colors_mixer_a(image, 2.0);
		break;
	case 8:
		retval = insitu_ctr2x2(image);
		break;
	case 9:
		retval = fimg_classif_trial(image, image, 0.37, 0);
		break;
	case 10:
		retval = binarize(image, 0);
		break;
	case 11:
		retval = trinarize(image, 0);
		break;
	case 12:
		retval = fimg_lissage_2x2(image);
		(void)fimg_killborders(image);
		break;
	case 13:
		retval = insitu_filtre3x3(image);
		break;
	case 14:
		retval = desaturate(image);
		break;
	case 15:
		retval = kill_a_few_lines(image, fval,
						image->height/20);
		break;
	case 16:
		retval = bouger_les_pixels(image, 8);
		break;
	case 17:
		retval = mirror_split(image, 0);
		break;
	case 18:
		retval = upside_down(image);
		break;

	/* here are the glitches */
	case 24:			/* experiment ! */
		retval = des_bords_sombres_a(image, 160);
		break;
	case 25:
		/* please make this function more tweakable */
		retval = vertical_singlitch(image, 290+rand()%45,
							fval, 0.19, 0);
		break;
	default :
		fprintf(stderr, "%s : effect #%d invalid\n", 
				__func__, idFx);
		return -77;
	}

#if DEBUG_THIS_CRAP
if (flag_debug) {
	fprintf(stderr, "DEBUG PT 2 in %s:%d\n", __func__, __LINE__);
	fimg_save_as_png(image, "crap_after.png", 0);
	flag_debug = 0;
	}
count++;
#endif

return retval;
}
/* -------------------------------------------------------------- */
char * crap_name_from_number(int num)
{
switch (num) {
	case 0:		return "none";
	case 8:		return "ctr2x2";
	case 13:	return "fltr3x3";
	case 18:	return "updown";
	}

return "???";
}
/* -------------------------------------------------------------- */
int crap_number_from_name(char *name)
{

return -1;
}
/* -------------------------------------------------------------- */