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authorMark Purcell <msp@debian.org>2008-06-22 11:00:40 +1000
committeretobi <git@e-tobi.net>2013-09-03 09:48:42 +0200
commit891c51ff368ed700dec6025eeb47ce4d96f76418 (patch)
tree3729664829e4faa691d403274f38eb10890b533c /util/dvbscan
parent1c6e1f28f54ec2606c23936c1d8689f2be55a86c (diff)
parentab959d7b4194715870128e616b8e29d4a101e488 (diff)
downloadlinux-dvb-apps-891c51ff368ed700dec6025eeb47ce4d96f76418.tar.gz
Imported Debian patch 1.1.1+rev1207-1debian/1.1.1+rev1207-1
Diffstat (limited to 'util/dvbscan')
-rw-r--r--util/dvbscan/Makefile22
-rw-r--r--util/dvbscan/dvbscan.c370
-rw-r--r--util/dvbscan/dvbscan.h136
-rw-r--r--util/dvbscan/dvbscan_atsc.c30
-rw-r--r--util/dvbscan/dvbscan_dvb.c30
-rw-r--r--util/dvbscan/dvbscan_structutils.c99
6 files changed, 687 insertions, 0 deletions
diff --git a/util/dvbscan/Makefile b/util/dvbscan/Makefile
new file mode 100644
index 0000000..d7e5de5
--- /dev/null
+++ b/util/dvbscan/Makefile
@@ -0,0 +1,22 @@
+# Makefile for linuxtv.org dvb-apps/util/dvbscan
+
+objects = dvbscan.o \
+ dvbscan_structutils.o \
+ dvbscan_dvb.o \
+ dvbscan_atsc.o
+
+binaries = dvbscan
+
+inst_bin = $(binaries)
+
+CPPFLAGS += -I../../lib
+LDFLAGS += -L../../lib/libdvbapi -L../../lib/libdvbcfg -L../../lib/libdvbsec -L../../lib/libucsi
+LDLIBS += -ldvbcfg -lucsi -ldvbsec -ldvbapi -lpthread
+
+.PHONY: all
+
+all: $(binaries)
+
+$(binaries): $(objects)
+
+include ../../Make.rules
diff --git a/util/dvbscan/dvbscan.c b/util/dvbscan/dvbscan.c
new file mode 100644
index 0000000..c6f9ea8
--- /dev/null
+++ b/util/dvbscan/dvbscan.c
@@ -0,0 +1,370 @@
+/*
+ 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 <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <libdvbsec/dvbsec_cfg.h>
+#include <libdvbcfg/dvbcfg_scanfile.h>
+#include <libdvbapi/dvbdemux.h>
+#include "dvbscan.h"
+
+
+#define OUTPUT_TYPE_RAW 1
+#define OUTPUT_TYPE_CHANNELS 2
+#define OUTPUT_TYPE_VDR12 3
+#define OUTPUT_TYPE_VDR13 4
+
+#define SERVICE_FILTER_TV 1
+#define SERVICE_FILTER_RADIO 2
+#define SERVICE_FILTER_OTHER 4
+#define SERVICE_FILTER_ENCRYPTED 8
+
+#define TIMEOUT_WAIT_LOCK 2
+
+
+// transponders we have yet to scan
+static struct transponder *toscan = NULL;
+static struct transponder *toscan_end = NULL;
+
+// transponders we have scanned
+static struct transponder *scanned = NULL;
+static struct transponder *scanned_end = NULL;
+
+
+static void usage(void)
+{
+ static const char *_usage = "\n"
+ " dvbscan: A digital tv channel scanning utility\n"
+ " Copyright (C) 2006 Andrew de Quincey (adq_dvb@lidskialf.net)\n\n"
+ " usage: dvbscan <options> as follows:\n"
+ " -h help\n"
+ " -adapter <id> adapter to use (default 0)\n"
+ " -frontend <id> frontend to use (default 0)\n"
+ " -demux <id> demux to use (default 0)\n"
+ " -secfile <filename> Optional sec.conf file.\n"
+ " -secid <secid> ID of the SEC configuration to use, one of:\n"
+ " * UNIVERSAL (default) - Europe, 10800 to 11800 MHz and 11600 to 12700 Mhz,\n"
+ " Dual LO, loband 9750, hiband 10600 MHz.\n"
+ " * DBS - Expressvu, North America, 12200 to 12700 MHz, Single LO, 11250 MHz.\n"
+ " * STANDARD - 10945 to 11450 Mhz, Single LO, 10000 Mhz.\n"
+ " * ENHANCED - Astra, 10700 to 11700 MHz, Single LO, 9750 MHz.\n"
+ " * C-BAND - Big Dish, 3700 to 4200 MHz, Single LO, 5150 Mhz.\n"
+ " * C-MULTI - Big Dish - Multipoint LNBf, 3700 to 4200 MHz,\n"
+ " Dual LO, H:5150MHz, V:5750MHz.\n"
+ " * One of the sec definitions from the secfile if supplied\n"
+ " -satpos <position> Specify DISEQC switch position for DVB-S.\n"
+ " -inversion <on|off|auto> Specify inversion (default: auto).\n"
+ " -uk-ordering Use UK DVB-T channel ordering if present.\n"
+ " -timeout <secs> Specify filter timeout to use (standard specced values will be used by default)\n"
+ " -filter <filter> Specify service filter, a comma seperated list of the following tokens:\n"
+ " (If no filter is supplied, all services will be output)\n"
+ " * tv - Output TV channels\n"
+ " * radio - Output radio channels\n"
+ " * other - Output other channels\n"
+ " * encrypted - Output encrypted channels\n"
+ " -out raw <filename>|- Output in raw format to <filename> or stdout\n"
+ " channels <filename>|- Output in channels.conf format to <filename> or stdout.\n"
+ " vdr12 <filename>|- Output in vdr 1.2.x format to <filename> or stdout.\n"
+ " vdr13 <filename>|- Output in vdr 1.3.x format to <filename> or stdout.\n"
+ " <initial scan file>\n";
+ fprintf(stderr, "%s\n", _usage);
+
+ exit(1);
+}
+
+
+static int scan_load_callback(struct dvbcfg_scanfile *channel, void *private_data)
+{
+ struct dvbfe_info *feinfo = (struct dvbfe_info *) private_data;
+
+ if (channel->fe_type != feinfo->type)
+ return 0;
+
+ struct transponder *t = new_transponder();
+ append_transponder(t, &toscan, &toscan_end);
+ memcpy(&t->params, &channel->fe_params, sizeof(struct dvbfe_parameters));
+
+ add_frequency(t, t->params.frequency);
+ t->params.frequency = 0;
+
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ uint32_t i;
+ int argpos = 1;
+ int adapter_id = 0;
+ int frontend_id = 0;
+ int demux_id = 0;
+ char *secfile = NULL;
+ char *secid = NULL;
+ int satpos = 0;
+ enum dvbfe_spectral_inversion inversion = DVBFE_INVERSION_AUTO;
+ int service_filter = -1;
+ int uk_ordering = 0;
+ int timeout = 5;
+ int output_type = OUTPUT_TYPE_RAW;
+ char *output_filename = NULL;
+ char *scan_filename = NULL;
+ struct dvbsec_config sec;
+ int valid_sec = 0;
+
+ while(argpos != argc) {
+ if (!strcmp(argv[argpos], "-h")) {
+ usage();
+ } else if (!strcmp(argv[argpos], "-adapter")) {
+ if ((argc - argpos) < 2)
+ usage();
+ if (sscanf(argv[argpos+1], "%i", &adapter_id) != 1)
+ usage();
+ argpos+=2;
+ } else if (!strcmp(argv[argpos], "-frontend")) {
+ if ((argc - argpos) < 2)
+ usage();
+ if (sscanf(argv[argpos+1], "%i", &frontend_id) != 1)
+ usage();
+ argpos+=2;
+ } else if (!strcmp(argv[argpos], "-demux")) {
+ if ((argc - argpos) < 2)
+ usage();
+ if (sscanf(argv[argpos+1], "%i", &demux_id) != 1)
+ usage();
+ argpos+=2;
+ } else if (!strcmp(argv[argpos], "-secfile")) {
+ if ((argc - argpos) < 2)
+ usage();
+ secfile = argv[argpos+1];
+ argpos+=2;
+ } else if (!strcmp(argv[argpos], "-secid")) {
+ if ((argc - argpos) < 2)
+ usage();
+ secid = argv[argpos+1];
+ argpos+=2;
+ } else if (!strcmp(argv[argpos], "-satpos")) {
+ if ((argc - argpos) < 2)
+ usage();
+ if (sscanf(argv[argpos+1], "%i", &satpos) != 1)
+ usage();
+ argpos+=2;
+ } else if (!strcmp(argv[argpos], "-inversion")) {
+ if ((argc - argpos) < 2)
+ usage();
+ if (!strcmp(argv[argpos+1], "off")) {
+ inversion = DVBFE_INVERSION_OFF;
+ } else if (!strcmp(argv[argpos+1], "on")) {
+ inversion = DVBFE_INVERSION_ON;
+ } else if (!strcmp(argv[argpos+1], "auto")) {
+ inversion = DVBFE_INVERSION_AUTO;
+ } else {
+ usage();
+ }
+ argpos+=2;
+ } else if (!strcmp(argv[argpos], "-uk-ordering")) {
+ if ((argc - argpos) < 1)
+ usage();
+ uk_ordering = 1;
+ } else if (!strcmp(argv[argpos], "-timeout")) {
+ if ((argc - argpos) < 2)
+ usage();
+ if (sscanf(argv[argpos+1], "%i", &timeout) != 1)
+ usage();
+ argpos+=2;
+ } else if (!strcmp(argv[argpos], "-filter")) {
+ if ((argc - argpos) < 2)
+ usage();
+ service_filter = 0;
+ if (!strstr(argv[argpos+1], "tv")) {
+ service_filter |= SERVICE_FILTER_TV;
+ }
+ if (!strstr(argv[argpos+1], "radio")) {
+ service_filter |= SERVICE_FILTER_RADIO;
+ }
+ if (!strstr(argv[argpos+1], "other")) {
+ service_filter |= SERVICE_FILTER_OTHER;
+ }
+ if (!strstr(argv[argpos+1], "encrypted")) {
+ service_filter |= SERVICE_FILTER_ENCRYPTED;
+ }
+ argpos+=2;
+ } else if (!strcmp(argv[argpos], "-out")) {
+ if ((argc - argpos) < 3)
+ usage();
+ if (!strcmp(argv[argpos+1], "raw")) {
+ output_type = OUTPUT_TYPE_RAW;
+ } else if (!strcmp(argv[argpos+1], "channels")) {
+ output_type = OUTPUT_TYPE_CHANNELS;
+ } else if (!strcmp(argv[argpos+1], "vdr12")) {
+ output_type = OUTPUT_TYPE_VDR12;
+ } else if (!strcmp(argv[argpos+1], "vdr13")) {
+ output_type = OUTPUT_TYPE_VDR13;
+ } else {
+ usage();
+ }
+ output_filename = argv[argpos+2];
+ if (!strcmp(output_filename, "-"))
+ output_filename = NULL;
+ } else {
+ if ((argc - argpos) != 1)
+ usage();
+ scan_filename = argv[argpos];
+ argpos++;
+ }
+ }
+
+ // open the frontend & get its type
+ struct dvbfe_handle *fe = dvbfe_open(adapter_id, frontend_id, 0);
+ if (fe == NULL) {
+ fprintf(stderr, "Failed to open frontend\n");
+ exit(1);
+ }
+ struct dvbfe_info feinfo;
+ if (dvbfe_get_info(fe, 0, &feinfo, DVBFE_INFO_QUERYTYPE_IMMEDIATE, 0) != 0) {
+ fprintf(stderr, "Failed to query frontend\n");
+ exit(1);
+ }
+
+ // default SEC with a DVBS card
+ if ((secid == NULL) && (feinfo.type == DVBFE_TYPE_DVBS))
+ secid = "UNIVERSAL";
+
+ // look up SECID if one was supplied
+ if (secid != NULL) {
+ if (dvbsec_cfg_find(secfile, secid, &sec)) {
+ fprintf(stderr, "Unable to find suitable sec/lnb configuration for channel\n");
+ exit(1);
+ }
+ valid_sec = 1;
+ }
+
+ // load the initial scan file
+ FILE *scan_file = fopen(scan_filename, "r");
+ if (scan_file == NULL) {
+ fprintf(stderr, "Could not open scan file %s\n", scan_filename);
+ exit(1);
+ }
+ if (dvbcfg_scanfile_parse(scan_file, scan_load_callback, &feinfo) < 0) {
+ fprintf(stderr, "Could not parse scan file %s\n", scan_filename);
+ exit(1);
+ }
+ fclose(scan_file);
+
+ // main scan loop
+ while(toscan) {
+ // get the first item on the toscan list
+ struct transponder *tmp = first_transponder(&toscan, &toscan_end);
+
+ // have we already seen this transponder?
+ if (seen_transponder(tmp, scanned)) {
+ free_transponder(tmp);
+ continue;
+ }
+
+ // do we have a valid SEC configuration?
+ struct dvbsec_config *psec = NULL;
+ if (valid_sec)
+ psec = &sec;
+
+ // tune it
+ int tuned_ok = 0;
+ for(i=0; i < tmp->frequency_count; i++) {
+ tmp->params.frequency = tmp->frequencies[i];
+ if (dvbsec_set(fe,
+ psec,
+ tmp->polarization,
+ (satpos & 0x01) ? DISEQC_SWITCH_B : DISEQC_SWITCH_A,
+ (satpos & 0x02) ? DISEQC_SWITCH_B : DISEQC_SWITCH_A,
+ &tmp->params,
+ 0)) {
+ fprintf(stderr, "Failed to set frontend\n");
+ exit(1);
+ }
+
+ // wait for lock
+ time_t starttime = time(NULL);
+ while((time(NULL) - starttime) < TIMEOUT_WAIT_LOCK) {
+ if (dvbfe_get_info(fe, DVBFE_INFO_LOCKSTATUS, &feinfo,
+ DVBFE_INFO_QUERYTYPE_IMMEDIATE, 0) !=
+ DVBFE_INFO_QUERYTYPE_IMMEDIATE) {
+ fprintf(stderr, "Unable to query frontend status\n");
+ exit(1);
+ }
+ if (feinfo.lock) {
+ tuned_ok = 1;
+ break;
+ }
+ usleep(100000);
+ }
+ }
+ if (!tuned_ok) {
+ free_transponder(tmp);
+ continue;
+ }
+
+ // scan it
+ switch(feinfo.type) {
+ case DVBFE_TYPE_DVBS:
+ case DVBFE_TYPE_DVBC:
+ case DVBFE_TYPE_DVBT:
+ dvbscan_scan_dvb(fe);
+ break;
+
+ case DVBFE_TYPE_ATSC:
+ dvbscan_scan_atsc(fe);
+ break;
+ }
+
+ // add to scanned list.
+ append_transponder(tmp, &scanned, &scanned_end);
+ }
+
+ // FIXME: output the data
+
+ return 0;
+}
+
+int create_section_filter(int adapter, int demux, uint16_t pid, uint8_t table_id)
+{
+ int demux_fd = -1;
+ uint8_t filter[18];
+ uint8_t mask[18];
+
+ // open the demuxer
+ if ((demux_fd = dvbdemux_open_demux(adapter, demux, 0)) < 0) {
+ return -1;
+ }
+
+ // create a section filter
+ memset(filter, 0, sizeof(filter));
+ memset(mask, 0, sizeof(mask));
+ filter[0] = table_id;
+ mask[0] = 0xFF;
+ if (dvbdemux_set_section_filter(demux_fd, pid, filter, mask, 1, 1)) {
+ close(demux_fd);
+ return -1;
+ }
+
+ // done
+ return demux_fd;
+}
diff --git a/util/dvbscan/dvbscan.h b/util/dvbscan/dvbscan.h
new file mode 100644
index 0000000..ddf61cf
--- /dev/null
+++ b/util/dvbscan/dvbscan.h
@@ -0,0 +1,136 @@
+/*
+ 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.
+*/
+
+#ifndef DVBSCAN_H
+#define DVBSCAN_H 1
+
+#include <libdvbapi/dvbfe.h>
+#include <libdvbsec/dvbsec_api.h>
+#include <libucsi/types.h>
+
+/**
+ * A stream which is part of a service.
+ */
+struct stream
+{
+ uint8_t stream_type;
+ iso639lang_t language;
+
+ struct stream *next;
+};
+
+/**
+ * A service (programme) which is part of a transponder.
+ */
+struct service
+{
+ /**
+ * Service identification stuff. Strings are in UTF-8.
+ */
+ uint16_t service_id;
+ char *provider_name;
+ char *service_name;
+
+ /**
+ * Pids common to the whole service.
+ */
+ uint16_t pmt_pid;
+ uint16_t pcr_pid;
+
+ /**
+ * CA stuff.
+ */
+ uint16_t *ca_ids;
+ uint32_t ca_ids_count;
+ uint8_t is_scrambled;
+
+ /**
+ * BBC channel number (-1 if unknown).
+ */
+ int bbc_channel_number;
+
+ /**
+ * Streams composing this service.
+ */
+ struct stream *streams;
+ struct stream *streams_end;
+
+ /**
+ * Next service in list.
+ */
+ struct service *next;
+};
+
+/**
+ * A collection of multiplexed services.
+ */
+struct transponder
+{
+ /**
+ * we need to have a seperate list of frequencies since the
+ * DVB standard allows a frequency list descriptor of alternate
+ * frequencies to be supplied.
+ */
+ uint32_t *frequencies;
+ uint32_t frequency_count;
+
+ /**
+ * The rest of the tuning parameters.
+ */
+ struct dvbfe_parameters params;
+
+ /**
+ * DVBS specific parameters
+ */
+ enum dvbsec_diseqc_polarization polarization;
+ int oribital_position;
+
+ /**
+ * Numerical IDs
+ */
+ uint16_t network_id;
+ uint16_t original_network_id;
+ uint16_t transport_stream_id;
+
+ /**
+ * Services detected on this transponder.
+ */
+ struct service *services;
+ struct service *services_end;
+
+ /**
+ * Next item in list.
+ */
+ struct transponder *next;
+};
+
+extern void append_transponder(struct transponder *t, struct transponder **tlist, struct transponder **tlist_end);
+extern struct transponder *new_transponder(void);
+extern void free_transponder(struct transponder *t);
+extern int seen_transponder(struct transponder *t, struct transponder *checklist);
+extern void add_frequency(struct transponder *t, uint32_t frequency);
+extern struct transponder *first_transponder(struct transponder **tlist, struct transponder **tlist_end);
+
+extern int create_section_filter(int adapter, int demux, uint16_t pid, uint8_t table_id);
+extern void dvbscan_scan_dvb(struct dvbfe_handle *fe);
+extern void dvbscan_scan_atsc(struct dvbfe_handle *fe);
+
+#endif
diff --git a/util/dvbscan/dvbscan_atsc.c b/util/dvbscan/dvbscan_atsc.c
new file mode 100644
index 0000000..b346f78
--- /dev/null
+++ b/util/dvbscan/dvbscan_atsc.c
@@ -0,0 +1,30 @@
+/*
+ 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 dvbscan_scan_atsc(struct dvbfe_handle *fe)
+{
+ // FIXME
+}
diff --git a/util/dvbscan/dvbscan_dvb.c b/util/dvbscan/dvbscan_dvb.c
new file mode 100644
index 0000000..c76d072
--- /dev/null
+++ b/util/dvbscan/dvbscan_dvb.c
@@ -0,0 +1,30 @@
+/*
+ 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 dvbscan_scan_dvb(struct dvbfe_handle *fe)
+{
+ // FIXME
+}
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;
+}