working on lowpass filter

tools/fimgfilters.c

@@ -0,0 +1,78 @@
+/*
+			FIMGFILTERS
+			===========
+ new: Sun Oct  8 05:51:05 UTC 2023
+*/
+
+#include  <stdio.h>
+#include  <string.h>
+#include  <stdint.h>
+#include  <stdlib.h>
+#include  <unistd.h>
+#include  <time.h>
+
+#include  "../floatimg.h"
+
+int		verbosity;
+
+/* --------------------------------------------------------------------- */
+int filtre_image(char *infname, char *outfname)
+{
+FloatImg	src, dst;
+int		foo;
+
+static FimgFilter3x3   filtre = {
+                {
+                2.0,    3.0,    2.0,
+                3.0,    4.0,    3.0,
+                2.0,    3.0,    2.0,
+                },
+        1.0/24.0,   0.0
+        };
+
+fprintf(stderr, ">>> %s ( '%s' '%s' )\n", __func__, infname, outfname);
+
+fimg_show_filter(NULL, &filtre);
+
+if ((foo = fimg_create_from_dump(infname, &src))) {
+	fprintf(stderr, "read error on '%s' is %d\n", infname, foo);
+	exit(2);
+	}
+if ((foo = fimg_clone(&src, &dst, 0))) {
+	fprintf(stderr, "clone error on %p is %d\n", &src, foo);
+	exit(3);
+	}
+
+foo = fimg_filter_3x3(&src, &dst, &filtre);
+if (foo) {
+	fprintf(stderr, "%s: filtre -> %d\n", __func__, foo);
+	exit(4);
+	}
+
+foo = fimg_dump_to_file(&dst, outfname, 0);
+if (foo) {
+	fprintf(stderr, "dumping to file give us a %d\n", foo);
+	}
+
+return -12;
+}
+/* --------------------------------------------------------------------- */
+
+int main(int argc, char *argv[])
+{
+int		foo;
+
+if (3 != argc) {
+	fprintf(stderr, "usage: %s in.fimg out.fimg\n", argv[0]);
+	exit(1);
+	}
+
+fprintf(stderr, "    +++ %s +++\n", argv[0]);
+
+foo = filtre_image(argv[1], argv[2]);
+fprintf(stderr, "    filtrage -> %d\n", foo);
+
+return 0;
+}
+/* --------------------------------------------------------------------- */
+