contour 2x2 -> fimgfx

tools/essai.sh

@@ -27,7 +27,6 @@ function essai_cmixa
 {
 ./mkfimg -vv -t tpat0 $TMPF 800 600
 ./fimgfx -vv cmixa $TMPF bar.fimg
-
 }
 #  -----------------------------------------------------
 function essai_cumulator
@@ -42,7 +41,13 @@ D=" 800 600 "
 	hdeg.fimg pat0.fimg rand.fimg vdeg.fimg
 }
 #  -----------------------------------------------------
+function essai_contour
+{
+./mkfimg -vv -t tpat0 $TMPF 800 600
+./fimgfx -vv ctr2x2 $TMPF bar.fimg
+}
+#  -----------------------------------------------------
 
-essai_cumulator
+essai_contour
 
 #  -----------------------------------------------------

tools/fimgfx.c

@@ -21,7 +21,7 @@ typedef struct {
 	} Fx;
 
 enum fxid { Fx_cos01=5, Fx_cos010, Fx_pow2, Fx_sqrt, Fx_gray0, Fx_halfsz0,
-		Fx_rot90, Fx_cmixa, Fx_Desat,
+		Fx_rot90, Fx_cmixa, Fx_desat, Fx_ctr2x2,
 		Fx_xper };
 
 Fx fx_list[] = {
@@ -34,7 +34,8 @@ Fx fx_list[] = {
 	{ "rot90",		Fx_rot90,	0,	0 },
 	{ "cmixa",		Fx_cmixa,	0,	1 },
 	{ "xper",		Fx_xper,	0,	1 },
-	{ "desat",		Fx_Desat,	0,	1 },
+	{ "desat",		Fx_desat,	0,	1 },
+	{ "ctr2x2",		Fx_ctr2x2,	0,	1 },
 	{ NULL,			0,	0 }
 	};
 
@@ -170,11 +171,15 @@ switch (action) {
 		fprintf(stderr, "halfsize was not implemented\n");
 		return -3;
 
-	case Fx_Desat:
+	case Fx_desat:
 		fimg_copy_data(&src, &dest);
 		foo = fimg_mix_rgb_gray(&dest, global_fvalue);
 		break;
 
+	case Fx_ctr2x2:
+		foo = fimg_contour_2x2(&src, &dest, 0);
+		break;
+
 	default:
 		fprintf(stderr, "%s %s : %d is bad action\n",
 					__FILE__, __func__, action);