1 files changed, 99 insertions, 0 deletions
diff --git a/util/dvbscan/dvbscan_structutils.c b/util/dvbscan/dvbscan_structutils.c
new file mode 100644
index 0000000..6fe3124
--- /dev/null
+++ b/util/dvbscan/dvbscan_structutils.c
@@ -0,0 +1,99 @@
+/*
+	dvbscan utility
+
+	Copyright (C) 2006 Andrew de Quincey (adq_dvb@lidskialf.net)
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the Free Software
+	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "dvbscan.h"
+
+void append_transponder(struct transponder *t, struct transponder **tlist, struct transponder **tlist_end)
+{
+	if (*tlist_end == NULL) {
+		*tlist = t;
+	} else {
+		(*tlist_end)->next = t;
+	}
+	*tlist_end = t;
+	t->next = NULL;
+}
+
+struct transponder *new_transponder(void)
+{
+	struct transponder *t = (struct transponder *) malloc(sizeof(struct transponder));
+	if (t == NULL) {
+		fprintf(stderr, "Out of memory\n");
+		exit(1);
+	}
+	memset(t, 0, sizeof(struct transponder));
+
+	return t;
+}
+
+void free_transponder(struct transponder *t)
+{
+	if (t->frequencies)
+		free(t->frequencies);
+	// FIXME: free services
+	free(t);
+}
+
+int seen_transponder(struct transponder *t, struct transponder *checklist)
+{
+	uint32_t i;
+
+	struct transponder *cur_check = checklist;
+	while(cur_check) {
+		uint32_t freq1 = cur_check->params.frequency / 2000;
+		for(i=0; i < t->frequency_count; i++) {
+			uint32_t freq2 = t->frequencies[i] / 2000;
+			if (freq1 == freq2) {
+				return 1;
+			}
+		}
+		cur_check = cur_check->next;
+	}
+
+	return 0;
+}
+
+void add_frequency(struct transponder *t, uint32_t frequency)
+{
+	uint32_t *tmp;
+
+	tmp = (uint32_t*) realloc(t->frequencies, sizeof(uint32_t) * (t->frequency_count + 1));
+	if (tmp == NULL) {
+		fprintf(stderr, "Out of memory\n");
+		exit(1);
+	}
+	tmp[t->frequency_count++] = frequency;
+	t->frequencies = tmp;
+}
+
+struct transponder *first_transponder(struct transponder **tlist, struct transponder **tlist_end)
+{
+	struct transponder *t = *tlist;
+
+	*tlist = t->next;
+	if (*tlist == NULL)
+		*tlist_end = NULL;
+
+	return t;
+}