1 files changed, 101 insertions, 0 deletions
diff --git a/util/szap/lnb.c b/util/szap/lnb.c
new file mode 100644
index 0000000..9052d1c
--- /dev/null
+++ b/util/szap/lnb.c
@@ -0,0 +1,101 @@
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include "lnb.h"
+
+static char *univ_desc[] = {
+		"Europe",
+		"10800 to 11800 MHz and 11600 to 12700 Mhz",
+		"Dual LO, loband 9750, hiband 10600 MHz",
+		(char *)NULL };
+
+static char *dbs_desc[] = {
+		"Expressvu, North America",
+		"12200 to 12700 MHz",
+		"Single LO, 11250 MHz",
+		(char *)NULL };
+
+static char *standard_desc[] = {
+		"10945 to 11450 Mhz",
+		"Single LO, 10000 Mhz",
+		(char *)NULL };
+
+static char *enhan_desc[] = {
+		"Astra",
+		"10700 to 11700 MHz",
+		"Single LO, 9750 MHz",
+		(char *)NULL };
+
+static char *cband_desc[] = {
+		"Big Dish",
+		"3700 to 4200 MHz",
+		"Single LO, 5150 Mhz",
+		(char *)NULL };
+
+static struct lnb_types_st lnbs[] = {
+	{"UNIVERSAL",	univ_desc,		9750, 10600, 11700 },
+ 	{"DBS",		dbs_desc, 		11250, 0, 0 },
+	{"STANDARD",	standard_desc,		10000, 0, 0 },
+	{"ENHANCED",	enhan_desc,		9750, 0, 0 },
+	{"C-BAND",	cband_desc,		5150, 0, 0 }
+};
+
+/* Enumerate through standard types of LNB's until NULL returned.
+ * Increment curno each time
+ */
+
+struct lnb_types_st *
+lnb_enum(int curno)
+{
+	if (curno >= (int) (sizeof(lnbs) / sizeof(lnbs[0])))
+		return (struct lnb_types_st *)NULL;
+	return &lnbs[curno];
+}
+
+/* Decode an lnb type, for example given on a command line
+ * If alpha and standard type, e.g. "Universal" then match that
+ * otherwise low[,high[,switch]]
+ */
+
+int
+lnb_decode(char *str, struct lnb_types_st *lnbp)
+{
+int i;
+char *cp, *np;
+
+	memset(lnbp, 0, sizeof(*lnbp));
+	cp = str;
+	while(*cp && isspace(*cp))
+		cp++;
+	if (isalpha(*cp)) {
+		for (i = 0; i < (int)(sizeof(lnbs) / sizeof(lnbs[0])); i++) {
+			if (!strcasecmp(lnbs[i].name, cp)) {
+				*lnbp = lnbs[i];
+				return 1;
+			}
+		}
+		return -1;
+	}
+	if (*cp == '\0' || !isdigit(*cp))
+		return -1;
+	lnbp->low_val = strtoul(cp, &np, 0);
+	if (lnbp->low_val == 0)
+		return -1;
+	cp = np;
+	while(*cp && (isspace(*cp) || *cp == ','))
+		cp++;
+	if (*cp == '\0')
+		return 1;
+	if (!isdigit(*cp))
+		return -1;
+	lnbp->high_val = strtoul(cp, &np, 0);
+	cp = np;
+	while(*cp && (isspace(*cp) || *cp == ','))
+		cp++;
+	if (*cp == '\0')
+		return 1;
+	if (!isdigit(*cp))
+		return -1;
+	lnbp->switch_val = strtoul(cp, NULL, 0);
+	return 1;
+}