Imported Upstream version 1.1.1+rev1207upstream/1.1.1+rev1207

6 files changed, 875 insertions, 0 deletions

diff --git a/util/zap/Makefile b/util/zap/Makefile
new file mode 100644
index 0000000..35e0c6d
--- /dev/null
+++ b/util/zap/Makefile
@@ -0,0 +1,20 @@
+# Makefile for linuxtv.org dvb-apps/util/zap
+
+objects  = zap_ca.o  \
+           zap_dvb.o
+
+binaries = zap
+
+inst_bin = $(binaries)
+
+CPPFLAGS += -I../../lib
+LDFLAGS  += -L../../lib/libdvbapi -L../../lib/libdvbsec  -L../../lib/libdvbcfg -L../../lib/libdvben50221 -L../../lib/libucsi
+LDLIBS   += -ldvbcfg -ldvben50221 -ldvbsec -ldvbapi -lucsi -lpthread
+
+.PHONY: all
+
+all: $(binaries)
+
+$(binaries): $(objects)
+
+include ../../Make.rules
diff --git a/util/zap/zap.c b/util/zap/zap.c
new file mode 100644
index 0000000..6f3df33
--- /dev/null
+++ b/util/zap/zap.c
@@ -0,0 +1,226 @@
+/*
+	ZAP utility
+
+	Copyright (C) 2004, 2005 Manu Abraham <abraham.manu@gmail.com>
+	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 Lesser General Public License as
+	published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public
+	License along with this library; if not, write to the Free Software
+	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+*/
+
+#include <stdio.h>
+#include <unistd.h>
+#include <limits.h>
+#include <string.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <pthread.h>
+#include <sys/poll.h>
+#include <libdvbapi/dvbdemux.h>
+#include <libdvbapi/dvbaudio.h>
+#include <libdvbsec/dvbsec_cfg.h>
+#include <libucsi/mpeg/section.h>
+#include "zap_dvb.h"
+#include "zap_ca.h"
+
+
+static void signal_handler(int _signal);
+
+static int quit_app = 0;
+
+void usage(void)
+{
+	static const char *_usage = "\n"
+		" ZAP: A zapping application\n"
+		" Copyright (C) 2004, 2005, 2006 Manu Abraham (manu@kromtek.com)\n"
+		" Copyright (C) 2006 Andrew de Quincey (adq_dvb@lidskialf.net)\n\n"
+		" usage: zap <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"
+		" -caslotnum <id>	ca slot number to use (default 0)\n"
+		" -channels <filename>	channels.conf file.\n"
+		" -secfile <filename>	Optional sec.conf file.\n"
+		" -secid <secid>	ID of the SEC configuration to use, one of:\n"
+		" -nomoveca		Do not attempt to move CA descriptors from stream to programme level\n"
+		" <channel name>\n";
+	fprintf(stderr, "%s\n", _usage);
+
+	exit(1);
+}
+
+int find_channel(struct dvbcfg_zapchannel *channel, void *private_data)
+{
+	struct dvbcfg_zapchannel *tmpchannel = private_data;
+
+	if (strcmp(channel->name, tmpchannel->name) == 0) {
+		memcpy(tmpchannel, channel, sizeof(struct dvbcfg_zapchannel));
+		return 1;
+	}
+
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	int adapter_id = 0;
+	int frontend_id = 0;
+	int demux_id = 0;
+	int caslot_num = 0;
+	char *chanfile = "/etc/channels.conf";
+	char *secfile = NULL;
+	char *secid = NULL;
+	char *channel_name = NULL;
+	int moveca = 1;
+	int argpos = 1;
+	struct zap_dvb_params zap_dvb_params;
+	struct zap_ca_params zap_ca_params;
+
+	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], "-caslotnum")) {
+			if ((argc - argpos) < 2)
+				usage();
+			if (sscanf(argv[argpos+1], "%i", &caslot_num) != 1)
+				usage();
+			argpos+=2;
+		} else if (!strcmp(argv[argpos], "-channels")) {
+			if ((argc - argpos) < 2)
+				usage();
+			chanfile = argv[argpos+1];
+			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], "-nomoveca")) {
+			moveca = 0;
+			argpos++;
+		} else {
+			if ((argc - argpos) != 1)
+				usage();
+			channel_name = argv[argpos];
+			argpos++;
+		}
+	}
+
+	// the user didn't select anything!
+	if (channel_name == NULL)
+		usage();
+
+	// setup any signals
+	signal(SIGINT, signal_handler);
+	signal(SIGPIPE, SIG_IGN);
+
+	// start the CA stuff
+	zap_ca_params.adapter_id = adapter_id;
+	zap_ca_params.caslot_num = caslot_num;
+	zap_ca_params.moveca = moveca;
+	zap_ca_start(&zap_ca_params);
+
+	// find the requested channel
+	if (strlen(channel_name) >= sizeof(zap_dvb_params.channel.name)) {
+		fprintf(stderr, "Channel name is too long %s\n", channel_name);
+		exit(1);
+	}
+	FILE *channel_file = fopen(chanfile, "r");
+	if (channel_file == NULL) {
+		fprintf(stderr, "Could open channel file %s\n", chanfile);
+		exit(1);
+	}
+	memcpy(zap_dvb_params.channel.name, channel_name, strlen(channel_name) + 1);
+	if (dvbcfg_zapchannel_parse(channel_file, find_channel, &zap_dvb_params.channel) != 1) {
+		fprintf(stderr, "Unable to find requested channel %s\n", channel_name);
+		exit(1);
+	}
+	fclose(channel_file);
+
+	// default SEC with a DVBS card
+	if ((secid == NULL) && (zap_dvb_params.channel.fe_type == DVBFE_TYPE_DVBS))
+		secid = "UNIVERSAL";
+
+	// look it up if one were supplied
+	zap_dvb_params.valid_sec = 0;
+	if (secid != NULL) {
+		if (dvbsec_cfg_find(secfile, secid,
+				&zap_dvb_params.sec)) {
+			fprintf(stderr, "Unable to find suitable sec/lnb configuration for channel\n");
+			exit(1);
+		}
+		zap_dvb_params.valid_sec = 1;
+	}
+
+	// open the frontend
+	zap_dvb_params.fe = dvbfe_open(adapter_id, frontend_id, 0);
+	if (zap_dvb_params.fe == NULL) {
+		fprintf(stderr, "Failed to open frontend\n");
+		exit(1);
+	}
+
+	// start the DVB stuff
+	zap_dvb_params.adapter_id = adapter_id;
+	zap_dvb_params.frontend_id = frontend_id;
+	zap_dvb_params.demux_id = demux_id;
+	zap_dvb_start(&zap_dvb_params);
+
+	// the UI
+	while(!quit_app) {
+		sleep(1);
+	}
+
+	// shutdown DVB stuff
+	if (channel_name != NULL)
+		zap_dvb_stop();
+
+	// shutdown CA stuff
+	zap_ca_stop();
+
+	// done
+	exit(0);
+}
+
+static void signal_handler(int _signal)
+{
+	(void) _signal;
+
+	if (!quit_app) {
+		quit_app = 1;
+	}
+}
diff --git a/util/zap/zap_ca.c b/util/zap/zap_ca.c
new file mode 100644
index 0000000..b78fdcf
--- /dev/null
+++ b/util/zap/zap_ca.c
@@ -0,0 +1,198 @@
+/*
+	ZAP utility CA functions
+
+	Copyright (C) 2004, 2005 Manu Abraham <abraham.manu@gmail.com>
+	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 Lesser General Public License as
+	published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public
+	License along with this library; if not, write to the Free Software
+	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/poll.h>
+#include <pthread.h>
+#include <libdvben50221/en50221_stdcam.h>
+#include "zap_ca.h"
+
+
+static int zap_ca_info_callback(void *arg, uint8_t slot_id, uint16_t session_number, uint32_t ca_id_count, uint16_t *ca_ids);
+static int zap_ai_callback(void *arg, uint8_t slot_id, uint16_t session_number,
+			     uint8_t application_type, uint16_t application_manufacturer,
+			     uint16_t manufacturer_code, uint8_t menu_string_length,
+			     uint8_t *menu_string);
+static void *camthread_func(void* arg);
+
+static struct en50221_transport_layer *tl = NULL;
+static struct en50221_session_layer *sl = NULL;
+static struct en50221_stdcam *stdcam = NULL;
+
+static int ca_resource_connected = 0;
+
+static int camthread_shutdown = 0;
+static pthread_t camthread;
+static int seenpmt = 0;
+static int moveca = 0;
+
+void zap_ca_start(struct zap_ca_params *params)
+{
+	// create transport layer
+	tl = en50221_tl_create(1, 16);
+	if (tl == NULL) {
+		fprintf(stderr, "Failed to create transport layer\n");
+		return;
+	}
+
+	// create session layer
+	sl = en50221_sl_create(tl, 16);
+	if (sl == NULL) {
+		fprintf(stderr, "Failed to create session layer\n");
+		en50221_tl_destroy(tl);
+		return;
+	}
+
+	// create the stdcam instance
+	stdcam = en50221_stdcam_create(params->adapter_id, params->caslot_num, tl, sl);
+	if (stdcam == NULL) {
+		en50221_sl_destroy(sl);
+		en50221_tl_destroy(tl);
+		return;
+	}
+
+	// hook up the AI callbacks
+	if (stdcam->ai_resource) {
+		en50221_app_ai_register_callback(stdcam->ai_resource, zap_ai_callback, stdcam);
+	}
+
+	// hook up the CA callbacks
+	if (stdcam->ca_resource) {
+		en50221_app_ca_register_info_callback(stdcam->ca_resource, zap_ca_info_callback, stdcam);
+	}
+
+	// any other stuff
+	moveca = params->moveca;
+
+	// start the cam thread
+	pthread_create(&camthread, NULL, camthread_func, NULL);
+}
+
+void zap_ca_stop(void)
+{
+	if (stdcam == NULL)
+		return;
+
+	// shutdown the cam thread
+	camthread_shutdown = 1;
+	pthread_join(camthread, NULL);
+
+	// destroy session layer
+	en50221_sl_destroy(sl);
+
+	// destroy transport layer
+	en50221_tl_destroy(tl);
+
+	// destroy the stdcam
+	if (stdcam->destroy)
+		stdcam->destroy(stdcam, 1);
+}
+
+int zap_ca_new_pmt(struct mpeg_pmt_section *pmt)
+{
+	uint8_t capmt[4096];
+	int size;
+
+	if (stdcam == NULL)
+		return -1;
+
+	if (ca_resource_connected) {
+		fprintf(stderr, "Received new PMT - sending to CAM...\n");
+
+		// translate it into a CA PMT
+		int listmgmt = CA_LIST_MANAGEMENT_ONLY;
+		if (seenpmt) {
+			listmgmt = CA_LIST_MANAGEMENT_UPDATE;
+		}
+		seenpmt = 1;
+
+		if ((size = en50221_ca_format_pmt(pmt, capmt, sizeof(capmt), moveca, listmgmt,
+						  CA_PMT_CMD_ID_OK_DESCRAMBLING)) < 0) {
+			fprintf(stderr, "Failed to format PMT\n");
+			return -1;
+		}
+
+		// set it
+		if (en50221_app_ca_pmt(stdcam->ca_resource, stdcam->ca_session_number, capmt, size)) {
+			fprintf(stderr, "Failed to send PMT\n");
+			return -1;
+		}
+
+		// we've seen this PMT
+		return 1;
+	}
+
+	return 0;
+}
+
+void zap_ca_new_dvbtime(time_t dvb_time)
+{
+	if (stdcam == NULL)
+		return;
+
+	if (stdcam->dvbtime)
+		stdcam->dvbtime(stdcam, dvb_time);
+}
+
+static void *camthread_func(void* arg)
+{
+	(void) arg;
+
+	while(!camthread_shutdown) {
+		stdcam->poll(stdcam);
+	}
+
+	return 0;
+}
+
+static int zap_ai_callback(void *arg, uint8_t slot_id, uint16_t session_number,
+			     uint8_t application_type, uint16_t application_manufacturer,
+			     uint16_t manufacturer_code, uint8_t menu_string_length,
+			     uint8_t *menu_string)
+{
+	(void) arg;
+	(void) slot_id;
+	(void) session_number;
+
+	printf("CAM Application type: %02x\n", application_type);
+	printf("CAM Application manufacturer: %04x\n", application_manufacturer);
+	printf("CAM Manufacturer code: %04x\n", manufacturer_code);
+	printf("CAM Menu string: %.*s\n", menu_string_length, menu_string);
+
+	return 0;
+}
+
+static int zap_ca_info_callback(void *arg, uint8_t slot_id, uint16_t session_number, uint32_t ca_id_count, uint16_t *ca_ids)
+{
+	(void) arg;
+	(void) slot_id;
+	(void) session_number;
+
+	printf("CAM supports the following ca system ids:\n");
+	uint32_t i;
+	for(i=0; i< ca_id_count; i++) {
+		printf("  0x%04x\n", ca_ids[i]);
+	}
+	ca_resource_connected = 1;
+	return 0;
+}
diff --git a/util/zap/zap_ca.h b/util/zap/zap_ca.h
new file mode 100644
index 0000000..5df45fd
--- /dev/null
+++ b/util/zap/zap_ca.h
@@ -0,0 +1,37 @@
+/*
+	ZAP utility CA functions
+
+	Copyright (C) 2004, 2005 Manu Abraham <abraham.manu@gmail.com>
+	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 Lesser General Public License as
+	published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public
+	License along with this library; if not, write to the Free Software
+	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+*/
+
+#ifndef ZAP_CA_H
+#define ZAP_CA_H 1
+
+struct zap_ca_params {
+	int adapter_id;
+	int caslot_num;
+	int moveca;
+};
+
+extern void zap_ca_start(struct zap_ca_params *params);
+extern void zap_ca_stop(void);
+
+extern int zap_ca_new_pmt(struct mpeg_pmt_section *pmt);
+extern void zap_ca_new_dvbtime(time_t dvb_time);
+
+#endif
diff --git a/util/zap/zap_dvb.c b/util/zap/zap_dvb.c
new file mode 100644
index 0000000..677e05e
--- /dev/null
+++ b/util/zap/zap_dvb.c
@@ -0,0 +1,353 @@
+/*
+	ZAP utility DVB functions
+
+	Copyright (C) 2004, 2005 Manu Abraham <abraham.manu@gmail.com>
+	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 Lesser General Public License as
+	published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public
+	License along with this library; if not, write to the Free Software
+	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+*/
+
+#include <stdio.h>
+#include <unistd.h>
+#include <limits.h>
+#include <string.h>
+#include <signal.h>
+#include <pthread.h>
+#include <sys/poll.h>
+#include <libdvbapi/dvbdemux.h>
+#include <libucsi/section.h>
+#include <libucsi/mpeg/section.h>
+#include <libucsi/dvb/section.h>
+#include "zap_dvb.h"
+#include "zap_ca.h"
+
+#define FE_STATUS_PARAMS (DVBFE_INFO_LOCKSTATUS|DVBFE_INFO_SIGNAL_STRENGTH|DVBFE_INFO_BER|DVBFE_INFO_SNR|DVBFE_INFO_UNCORRECTED_BLOCKS)
+
+static int dvbthread_shutdown = 0;
+static pthread_t dvbthread;
+
+static int pat_version = -1;
+static int ca_pmt_version = -1;
+
+static void *dvbthread_func(void* arg);
+
+static void process_pat(int pat_fd, struct zap_dvb_params *params, int *pmt_fd, struct pollfd *pollfd);
+static void process_tdt(int tdt_fd);
+static void process_pmt(int pmt_fd, struct zap_dvb_params *params);
+static int create_section_filter(int adapter, int demux, uint16_t pid, uint8_t table_id);
+
+
+int zap_dvb_start(struct zap_dvb_params *params)
+{
+	pthread_create(&dvbthread, NULL, dvbthread_func, (void*) params);
+	return 0;
+}
+
+void zap_dvb_stop(void)
+{
+	dvbthread_shutdown = 1;
+	pthread_join(dvbthread, NULL);
+}
+
+static void *dvbthread_func(void* arg)
+{
+	int tune_state = 0;
+	int pat_fd = -1;
+	int pmt_fd = -1;
+	int tdt_fd = -1;
+	struct pollfd pollfds[3];
+
+	struct zap_dvb_params *params = (struct zap_dvb_params *) arg;
+
+	// create PAT filter
+	if ((pat_fd = create_section_filter(params->adapter_id, params->demux_id,
+	     TRANSPORT_PAT_PID, stag_mpeg_program_association)) < 0) {
+		fprintf(stderr, "Failed to create PAT section filter\n");
+		exit(1);
+	}
+	pollfds[0].fd = pat_fd;
+	pollfds[0].events = POLLIN|POLLPRI|POLLERR;
+
+	// create TDT filter
+	if ((tdt_fd = create_section_filter(params->adapter_id, params->demux_id, TRANSPORT_TDT_PID, stag_dvb_time_date)) < 0) {
+		fprintf(stderr, "Failed to create TDT section filter\n");
+		exit(1);
+	}
+	pollfds[1].fd = tdt_fd;
+	pollfds[1].events = POLLIN|POLLPRI|POLLERR;
+
+	// zero PMT filter
+	pollfds[2].fd = 0;
+	pollfds[2].events = 0;
+
+	// the DVB loop
+	while(!dvbthread_shutdown) {
+		// tune frontend + monitor lock status
+		if (tune_state == 0) {
+			// get the type of frontend
+			struct dvbfe_info result;
+			char *types;
+			memset(&result, 0, sizeof(result));
+			dvbfe_get_info(params->fe, 0, &result, DVBFE_INFO_QUERYTYPE_IMMEDIATE, 0);
+			switch(result.type) {
+			case DVBFE_TYPE_DVBS:
+				types = "DVB-S";
+				break;
+			case DVBFE_TYPE_DVBC:
+				types = "DVB-C";
+				break;
+			case DVBFE_TYPE_DVBT:
+				types = "DVB-T";
+				break;
+			case DVBFE_TYPE_ATSC:
+				types = "ATSC";
+				break;
+			default:
+				types = "Unknown";
+			}
+			fprintf(stderr, "Using frontend \"%s\", type %s\n", result.name, types);
+
+			// do we have a valid SEC configuration?
+			struct dvbsec_config *sec = NULL;
+			if (params->valid_sec)
+				sec = &params->sec;
+
+			// tune!
+			if (dvbsec_set(params->fe,
+			    		  sec,
+					  params->channel.polarization,
+					  (params->channel.diseqc_switch & 0x01) ? DISEQC_SWITCH_B : DISEQC_SWITCH_A,
+					  (params->channel.diseqc_switch & 0x02) ? DISEQC_SWITCH_B : DISEQC_SWITCH_A,
+					  &params->channel.fe_params,
+					  0)) {
+				fprintf(stderr, "Failed to set frontend\n");
+				exit(1);
+			}
+
+			tune_state++;
+		} else if (tune_state == 1) {
+			struct dvbfe_info result;
+			memset(&result, 0, sizeof(result));
+			if (dvbfe_get_info(params->fe,
+					   FE_STATUS_PARAMS,
+			    		   &result,
+			    		   DVBFE_INFO_QUERYTYPE_IMMEDIATE,
+			    		   0) != FE_STATUS_PARAMS) {
+				fprintf(stderr, "Problem retrieving frontend information: %m\n");
+			}
+
+			fprintf(stderr, "status %c%c%c%c%c | signal %04x | snr %04x | ber %08x | unc %08x | %s\r",
+				result.signal ? 'S' : ' ',
+				result.carrier ? 'C' : ' ',
+				result.viterbi ? 'V' : ' ',
+				result.sync ? 'Y' : ' ',
+				result.lock ? 'L' : ' ',
+				result.signal_strength,
+				result.snr,
+				result.ber,
+				result.ucblocks,
+				result.lock ? "FE_HAS_LOCK" : "");
+			fflush(stderr);
+
+			if (result.lock) {
+				tune_state++;
+				fprintf(stderr, "\n");
+				fflush(stderr);
+			} else {
+				usleep(500000);
+			}
+		}
+
+		// is there SI data?
+		int count = poll(pollfds, 3, 100);
+		if (count < 0) {
+			fprintf(stderr, "Poll error\n");
+			break;
+		}
+		if (count == 0) {
+			continue;
+		}
+
+		// PAT
+		if (pollfds[0].revents & (POLLIN|POLLPRI)) {
+			process_pat(pat_fd, params, &pmt_fd, &pollfds[2]);
+		}
+
+		// TDT
+		if (pollfds[1].revents & (POLLIN|POLLPRI)) {
+			process_tdt(tdt_fd);
+		}
+
+		//  PMT
+		if (pollfds[2].revents & (POLLIN|POLLPRI)) {
+			process_pmt(pmt_fd, params);
+		}
+	}
+
+	// close demuxers
+	if (pat_fd != -1)
+		close(pat_fd);
+	if (pmt_fd != -1)
+		close(pmt_fd);
+	if (tdt_fd != -1)
+		close(tdt_fd);
+
+	return 0;
+}
+
+static void process_pat(int pat_fd, struct zap_dvb_params *params, int *pmt_fd, struct pollfd *pollfd)
+{
+	int size;
+	uint8_t sibuf[4096];
+
+	// read the section
+	if ((size = read(pat_fd, sibuf, sizeof(sibuf))) < 0) {
+		return;
+	}
+
+	// parse section
+	struct section *section = section_codec(sibuf, size);
+	if (section == NULL) {
+		return;
+	}
+
+	// parse section_ext
+	struct section_ext *section_ext = section_ext_decode(section, 0);
+	if (section_ext == NULL) {
+		return;
+	}
+	if (pat_version == section_ext->version_number) {
+		return;
+	}
+
+	// parse PAT
+	struct mpeg_pat_section *pat = mpeg_pat_section_codec(section_ext);
+	if (pat == NULL) {
+		return;
+	}
+
+	// try and find the requested program
+	struct mpeg_pat_program *cur_program;
+	mpeg_pat_section_programs_for_each(pat, cur_program) {
+		if (cur_program->program_number == params->channel.service_id) {
+			// close old PMT fd
+			if (*pmt_fd != -1)
+				close(*pmt_fd);
+
+			// create PMT filter
+			if ((*pmt_fd = create_section_filter(params->adapter_id, params->demux_id,
+							     cur_program->pid, stag_mpeg_program_map)) < 0) {
+				return;
+			}
+			pollfd->fd = *pmt_fd;
+			pollfd->events = POLLIN|POLLPRI|POLLERR;
+
+			// we have a new PMT pid
+			ca_pmt_version = -1;
+			break;
+		}
+	}
+
+	// remember the PAT version
+	pat_version = section_ext->version_number;
+}
+
+static void process_tdt(int tdt_fd)
+{
+	int size;
+	uint8_t sibuf[4096];
+
+	// read the section
+	if ((size = read(tdt_fd, sibuf, sizeof(sibuf))) < 0) {
+		return;
+	}
+
+	// parse section
+	struct section *section = section_codec(sibuf, size);
+	if (section == NULL) {
+		return;
+	}
+
+	// parse TDT
+	struct dvb_tdt_section *tdt = dvb_tdt_section_codec(section);
+	if (tdt == NULL) {
+		return;
+	}
+
+	// done
+	zap_ca_new_dvbtime(dvbdate_to_unixtime(tdt->utc_time));
+}
+
+static void process_pmt(int pmt_fd, struct zap_dvb_params *params)
+{
+	int size;
+	uint8_t sibuf[4096];
+
+	// read the section
+	if ((size = read(pmt_fd, sibuf, sizeof(sibuf))) < 0) {
+		return;
+	}
+
+	// parse section
+	struct section *section = section_codec(sibuf, size);
+	if (section == NULL) {
+		return;
+	}
+
+	// parse section_ext
+	struct section_ext *section_ext = section_ext_decode(section, 0);
+	if (section_ext == NULL) {
+		return;
+	}
+	if ((section_ext->table_id_ext != params->channel.service_id) ||
+	    (section_ext->version_number == ca_pmt_version)) {
+		return;
+	}
+
+	// parse PMT
+	struct mpeg_pmt_section *pmt = mpeg_pmt_section_codec(section_ext);
+	if (pmt == NULL) {
+		return;
+	}
+
+	// do ca handling
+	if (zap_ca_new_pmt(pmt) == 1)
+		ca_pmt_version = pmt->head.version_number;
+}
+
+static 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/zap/zap_dvb.h b/util/zap/zap_dvb.h
new file mode 100644
index 0000000..d2a219a
--- /dev/null
+++ b/util/zap/zap_dvb.h
@@ -0,0 +1,41 @@
+/*
+	ZAP utility DVB functions
+
+	Copyright (C) 2004, 2005 Manu Abraham <abraham.manu@gmail.com>
+	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 Lesser General Public License as
+	published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public
+	License along with this library; if not, write to the Free Software
+	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+*/
+
+#ifndef ZAP_DVB_H
+#define ZAP_DVB_H 1
+
+#include <libdvbcfg/dvbcfg_zapchannel.h>
+#include <libdvbsec/dvbsec_api.h>
+
+struct zap_dvb_params {
+	int adapter_id;
+	int frontend_id;
+	int demux_id;
+	struct dvbcfg_zapchannel channel;
+	struct dvbsec_config sec;
+	int valid_sec;
+	struct dvbfe_handle *fe;
+};
+
+extern int zap_dvb_start(struct zap_dvb_params *params);
+extern void zap_dvb_stop(void);
+
+#endif