start of libnetpbm integration

funcs/fimg-libpnm.c

@@ -0,0 +1,52 @@
+/*
+ *		interface FloatImg <-> libpnm(3)
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include  <pam.h>        
+
+#include "../floatimg.h"
+
+extern int		verbosity;
+
+/* --------------------------------------------------------------------- */
+static void print_struct_pam(struct pam *ppam, char *txt)
+{
+
+printf("size                %d\n", ppam->size);
+
+printf("format              %d\n", ppam->format);
+printf("plainformat         %d\n", ppam->plainformat);
+printf("width & height      %d %d\n", ppam->width, ppam->height);
+printf("depth               %d\n", ppam->depth);
+printf("maxval              %lu\n", ppam->maxval);
+
+}
+/* --------------------------------------------------------------------- */
+
+int fimg_pnm_infos(char *fname)
+{
+struct pam		inpam;
+FILE			*fp;
+
+#if DEBUG_LEVEL
+fprintf(stderr, ">>> %s ( '%s' )\n", __func__, fname);
+#endif
+
+if (NULL==(fp=fopen(fname, "r"))) {
+	perror(fname);
+	exit(1);
+	}
+
+pnm_readpaminit(fp, &inpam, sizeof(inpam));
+
+print_struct_pam(&inpam, fname);
+
+fclose(fp);
+
+return 0;
+}
+/* --------------------------------------------------------------------- */