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/* -*- c++ -*- */
/*
* Copyright belongs to Andreas Mueller
* Modified 2017 by Moritz Luca Schmid, Communications Engineering Lab (CEL) / Karlsruhe Institute of Technology (KIT).
*
* This 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 3, or (at your option)
* any later version.
*
* This software 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 software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <gnuradio/io_signature.h>
#include "fib_sink_vb_impl.h"
#include <stdexcept>
#include <stdio.h>
#include <sstream>
#include <string>
#include <boost/format.hpp>
#include "crc16.h"
#include "FIC.h"
using namespace boost;
namespace gr {
namespace dab {
fib_sink_vb::sptr
fib_sink_vb::make()
{
return gnuradio::get_initial_sptr
(new fib_sink_vb_impl());
}
fib_sink_vb_impl::fib_sink_vb_impl()
: gr::sync_block("fib_sink_vb",
gr::io_signature::make(1, 1, sizeof(char) * 32),
gr::io_signature::make(0, 0, 0))
{
d_service_info_written_trigger = -1;
d_service_labels_written_trigger = -1;
d_subch_info_written_trigger = -1;
d_programme_type_written_trigger = -1;
d_crc_passed = false;
d_print_channel_info = false;
}
void
fib_sink_vb_impl::set_print_channel_info(bool val)
{
d_print_channel_info = val;
}
int
fib_sink_vb_impl::process_fib(const char *fib)
{
uint8_t type, length, pos;
if (crc16(fib, FIB_LENGTH, FIB_CRC_POLY, FIB_CRC_INITSTATE) != 0) {
GR_LOG_DEBUG(d_logger, "FIB CRC error");
d_crc_passed = false;
return 1;
}
GR_LOG_DEBUG(d_logger, "FIB correct");
d_crc_passed = true;
pos = 0;
while (pos < FIB_LENGTH - FIB_CRC_LENGTH && (uint8_t) fib[pos] != FIB_ENDMARKER &&
(uint8_t) fib[pos] != 0) { //TODO correct?
type = fib[pos] >> 5;
length = fib[pos] & 0x1f;
assert(pos + length <= FIB_LENGTH - FIB_CRC_LENGTH);
assert(length != 0);
process_fig(type, &fib[pos], length);
pos += length + 1;
}
return 0;
}
int
fib_sink_vb_impl::process_fig(uint8_t type, const char *data, uint8_t length)
{
uint8_t cn, oe, pd, extension;
switch (type) {
case FIB_FIG_TYPE_MCI:
GR_LOG_DEBUG(d_logger, "FIG type 0");
extension = (uint8_t)(data[1] & 0x1f);
cn = (uint8_t)(data[1] & 0x80);
if (cn == 1) GR_LOG_DEBUG(d_logger, "[WARNING, INFO FOR FUTURE CONFIGURATION]: ");
oe = (uint8_t)(data[1] & 0x40);
if (cn == 1) GR_LOG_DEBUG(d_logger, "[WARNING, INFO FOR OTHER ENSEMBLE]");
pd = (uint8_t)(data[1] & 0x20);
if (pd == 1) GR_LOG_DEBUG(d_logger, "[WARNING, LONG IDENTIFIER");
switch (extension) {
case FIB_MCI_EXTENSION_ENSEMBLE_INFO: {
uint8_t country_ID = (uint8_t)((data[2] & 0xf0) >> 4);
uint16_t ensemble_reference = (uint16_t)(data[2] & 0x0f) << 8 | (uint8_t) data[3];
uint8_t change_flag = (uint8_t)((data[4] & 0xc0) >> 6);
uint8_t occurrence_change = data[6];
if (change_flag != 0)
d_logger->debug(", [CHANGE OF SUBCHANNEL OR SERVICE ORGA ({})](at CIF {}) ",(int) change_flag,(int) occurrence_change);
uint8_t alarm_flag = (uint8_t)((data[4] & 0x20) >> 5);
if (alarm_flag == 1) GR_LOG_DEBUG(d_logger, ", [ALARM MESSAGE ACCESSIBLE] ");
uint16_t CIF_counter = (uint16_t)((data[4] & 0x1f) * 250 + (data[5]));
d_logger->debug("ensemble info: reference {}, country ID {}, CIF counter = {}",ensemble_reference,(int) country_ID,CIF_counter);
break;
}
case FIB_MCI_EXTENSION_SUBCHANNEL_ORGA: {
uint8_t subch_counter = 0;
GR_LOG_DEBUG(d_logger, "subchannel orga: ");
do {
uint8_t subchID = (uint8_t)((data[2 + subch_counter] & 0xfc) >> 2);
uint16_t start_address = (uint16_t)((data[2 + subch_counter] & 0x03) << 8) |
(uint8_t)(data[3 + subch_counter]);
uint8_t sl_form = (uint8_t)(data[4] & 0x80);
if (sl_form == 0) {
uint8_t table_switch = (uint8_t)(data[4 + subch_counter] & 0x40);
if (table_switch != 0) GR_LOG_DEBUG(d_logger, " [WARNING: OTHER TABLE USED] ");
uint8_t table_index = (uint8_t)(data[4 + subch_counter] & 0x3f);
d_logger->debug("subchID = {} , start address = {}, index {}",(int) subchID,(int) start_address,(int) table_index);
subch_counter += 3;
} else {
uint8_t option = (uint8_t)(data[4 + subch_counter] & 0x70);
uint8_t protect_level = (uint8_t)((data[4 + subch_counter] & 0x0c) >> 2);
uint16_t subch_size = (uint16_t)((data[4 + subch_counter] & 0x03) << 8) |
(uint8_t)(data[5 + subch_counter]);
d_logger->debug("subchID = {} , start address = {}, option {}, protect level {}, subch size {}",(int) subchID,
(int) start_address,(int) option,(int) protect_level,(int) subch_size);
subch_counter += 4;
// write sub-channel info to json
if (d_subch_info_written_trigger < 0) {
d_subch_info_written_trigger = (int) subchID;
} else {
std::stringstream ss;
ss << d_subch_info_current << ",{" << "\"ID\":" << (int) subchID << ",\"address\":"
<< (int) start_address << ",\"protection\":" << (int) protect_level << ",\"size\":"
<< (int) subch_size << "}\0";
d_subch_info_current = ss.str();
if ((int) subchID == d_subch_info_written_trigger) {
std::stringstream ss_json;
ss_json << d_subch_info_current << "]" << "\0";
d_subch_info_current = "\0";
d_json_subch_info = ss_json.str();
d_json_subch_info[0] = '[';
d_subch_info_written_trigger = -1;
int my_conv_table[4] = { 128, 8, 6, 5};
char protect_string[4][3] = {"A1", "A2", "A3", "A4"};
if (d_print_channel_info) {
if (protect_level <= 4) {
int bit_rate = subch_size * 8 / (my_conv_table[protect_level]);
char *protect_level_string = protect_string[protect_level];
printf("{\"bit_rate\" : \"%d\", \"address\" : \"%d\", \"subch_size\" : \"%d\", \"protect_level\" : \"%s (%d)\"}\n", bit_rate, start_address, subch_size, protect_level_string, protect_level);
}
}
}
}
}
} while (1 + subch_counter < length);
break;
}
case FIB_MCI_EXTENSION_SERVICE_ORGA: {
uint8_t service_counter = 1;
do { //iterate over services
uint16_t service_reference = (uint16_t)(data[service_counter + 1] & 0x0f) << 8 |
(uint8_t) data[service_counter + 2];
d_logger->debug("service orga: reference {} ",service_reference);
uint8_t local_flag = (uint8_t)((data[service_counter + 3] & 0x80) >> 7);
if (local_flag == 1) GR_LOG_DEBUG(d_logger, "[LOCAL FLAG SET] ");
uint8_t ca = (uint8_t)((data[service_counter + 3] & 0x70) >> 4);
if (ca != 0) GR_LOG_DEBUG(d_logger, "[CONDITIONAL ACCESS USED] ");
uint8_t num_service_comps = (uint8_t)(data[service_counter + 3] & 0x0f);
d_logger->debug("({} components):",num_service_comps);
for (int i = 0; i < num_service_comps; i++) { //iterate over service components
uint8_t TMID = (uint8_t)((data[service_counter + 4 + i * 2] & 0xc0) >> 6);
uint8_t comp_type = (uint8_t)(data[service_counter + 4 + i * 2] & 0x3f);
uint8_t subchID = (uint8_t)((data[service_counter + 5 + i * 2] & 0xfc) >> 2);
uint8_t ps = (uint8_t)((data[service_counter + 5 + i * 2 + 1] & 0x02) >> 1);
if (TMID == 0) {
d_logger->debug("(audio stream, type {}, subchID {}, primary {})",(int) comp_type,
(int) subchID,(int) ps);
// write service info from specififc subchannel to json
if (d_service_info_written_trigger < 0) {
d_service_info_written_trigger = (int) subchID;
} else {
std::stringstream ss;
ss << d_service_info_current << ",{" << "\"reference\":" << (int) service_reference << ",\"ID\":"
<< (int) subchID << ",\"primary\":" << ((ps == 1) ? "true" : "false") << ",\"DAB+\":"
<< (((int) comp_type == 63) ? "true" : "false") << "}\0";
d_service_info_current = ss.str();
if ((int) subchID == d_service_info_written_trigger) {
std::stringstream ss_json;
ss_json << d_service_info_current << "]" << "\0";
d_service_info_current = "\0";
d_json_service_info = ss_json.str();
d_json_service_info[0] = '[';
d_service_info_written_trigger = -1;
}
}
} else if (TMID == 1) {
d_logger->debug("(data stream, type {}, subchID {}, primary {})",(int) comp_type,
(int) subchID,(int) ps);
} else if (TMID == 2) {
d_logger->debug("(FIDC, type {}, subchID {}, primary {})",(int) comp_type,(int) subchID,
(int) ps);
} else {
GR_LOG_DEBUG(d_logger, "[packed data]");
}
}
service_counter += 3 + 2 * num_service_comps;
} while (service_counter < length);
break;
}
case FIB_MCI_EXTENSION_SERVICE_ORGA_PACKET_MODE:
GR_LOG_DEBUG(d_logger, "service orga packet mode");
break;
case FIB_MCI_EXTENSION_SERVICE_ORGA_CA:
GR_LOG_DEBUG(d_logger, "service orga conditional access");
break;
case FIB_SI_EXTENSION_SERVICE_COMP_LANGUAGE:
GR_LOG_DEBUG(d_logger, "service comp language");
break;
case FIB_MCI_EXTENSION_SERVICE_COMP_GLOBAL_DEFINITION: {
uint8_t service_comp_counter = 0;
do {
uint16_t service_reference = (uint16_t)(data[service_comp_counter + 2] & 0x0f) << 8 |
(uint8_t) data[service_comp_counter + 3];
uint8_t SCIdS = (uint8_t)(data[service_comp_counter + 4] & 0x0f);
if ((data[service_comp_counter + 5] & 0x80) == 0) {
uint8_t subchID = (uint8_t)(data[service_comp_counter + 5] & 0x3f);
d_logger->debug("service component global definition: reference {}, SCIdS {}, subchID {}",
service_reference,(int) SCIdS,(int) subchID);
service_comp_counter += 5;
} else {
uint16_t subchID = (uint16_t)(data[service_comp_counter + 5] & 0x0f) << 8 |
(uint8_t) data[service_comp_counter + 6];
d_logger->debug("service component global definition: reference {}, SCIdS {}, subchID {}",
service_reference,(int) SCIdS,(int) subchID);
service_comp_counter += 6;
}
} while (1 + service_comp_counter < length);
break;
}
case FIB_SI_EXTENSION_COUNTRY_LTO:
GR_LOG_DEBUG(d_logger, "country LTO");
break;
case FIB_SI_EXTENSION_USER_APPLICATION_INFO:
GR_LOG_DEBUG(d_logger, "user application info");
break;
case FIB_MCI_EXTENSION_SUBCHANNEL_PACKET_MODE_FEC:
GR_LOG_DEBUG(d_logger, "subchannel orga packet mode fec");
break;
case FIB_SI_EXTENSION_PROGRAMME_NUMBER:
GR_LOG_DEBUG(d_logger, "programme number");
break;
case FIB_SI_EXTENSION_PROGRAMME_TYPE: {
d_logger->debug("programme type, {} components",((length-1)/4));
for(int i = 0; i < (length-1)/4; i++) {
uint8_t programme_type = (uint8_t)(data[2 + i*4 + 3] & 0x1f);
uint16_t service_reference = (uint16_t)(data[2 + i*4] & 0x0f) << 8 |
(uint8_t) data[2 + i*4 + 1];
d_logger->debug("reference {}, type: {}",service_reference,(int)programme_type);
// write programme type to json
if (d_programme_type_written_trigger < 0) {
d_programme_type_written_trigger = (int) service_reference;
} else {
std::stringstream ss;
ss << d_programme_type_current << ",{" << "\"reference\":" << (int) service_reference << ",\"programme_type\":"
<< (int) programme_type << "}\0";
d_programme_type_current = ss.str();
if ((int) service_reference == d_programme_type_written_trigger) {
std::stringstream ss_json;
ss_json << d_programme_type_current << "]" << "\0";
d_programme_type_current = "\0";
d_json_programme_type = ss_json.str();
d_json_programme_type[0] = '[';
d_programme_type_written_trigger = -1;
}
}
}
break;
}
case FIB_SI_EXTENSION_ANNOUNCEMENT_SUPPORT:
GR_LOG_DEBUG(d_logger, "announcement support");
break;
case FIB_SI_EXTENSION_ANNOUNCEMENT_SWITCHING:
GR_LOG_DEBUG(d_logger, "announcement switching");
break;
default:
d_logger->debug("unsupported extension ({})",(int) extension);
break;
}
break;
case FIB_FIG_TYPE_LABEL1:
case FIB_FIG_TYPE_LABEL2: {
GR_LOG_DEBUG(d_logger, "FIG type 2");
char label[17];
label[16] = '\0';
extension = (uint8_t)(data[1] & 0x07);
switch (extension) {
case FIB_SI_EXTENSION_ENSEMBLE_LABEL: {
uint8_t country_ID = (uint8_t)((data[2] & 0xf0) >> 4);
memcpy(label, &data[4], 16);
d_logger->debug("[ensemble label]({}): {}",(int) country_ID,label);
// write json for ensemble label and country ID
std::stringstream ss;
ss << "{" << "\"" << label << "\":{" << "\"country_ID\":" << (int) country_ID << "}}";
d_json_ensemble_info = ss.str();
break;
}
case FIB_SI_EXTENSION_PROGRAMME_SERVICE_LABEL: {
uint16_t service_reference = (uint16_t)(data[2] & 0x0f) << 8 | (uint8_t) data[3];
memcpy(label, &data[4], 16);
for (int i=0;i<16;i++) {
if ((label[i] >= 'A' && label[i] <= 'Z') || (label[i] >= 'a' && label[i] <= 'z') || (label[i] >= '0' && label[i] <= '9') || label[i] == ' ') { }
else label[i] = '.'; // Temporarily replacing invalid characters with . to avoid encoding problems in Python FIXME
}
d_logger->debug("[programme service label] (reference {}): {}",service_reference,label);
// write service labels from services to json
if (d_service_labels_written_trigger < 0) {
d_service_labels_written_trigger = (int) service_reference;
} else {
std::stringstream ss;
ss << d_service_labels_current << ",{" << "\"label\":\"" << label << "\",\"reference\":"
<< (int) service_reference << "}\0";
d_service_labels_current = ss.str();
if ((int) service_reference == d_service_labels_written_trigger) {
std::stringstream ss_json;
ss_json << d_service_labels_current << "]" << "\0";
d_service_labels_current = "\0";
d_json_service_labels = ss_json.str();
d_json_service_labels[0] = '[';
d_service_labels_written_trigger = -1;
}
}
break;
}
case FIB_SI_EXTENSION_SERVICE_COMP_LABEL:
memcpy(label, &data[5], 16);
d_logger->debug("[service component label] {}",label);
break;
case FIB_SI_EXTENSION_DATA_SERVICE_LABEL:
memcpy(label, &data[5], 16);
d_logger->debug("[data service label]: {}",label);
break;
default:
d_logger->debug("[unknown extension ({})",(int) extension);
break;
}
break;
}
case FIB_FIG_TYPE_FIDC:
GR_LOG_DEBUG(d_logger, "FIG type 5");
extension = (uint8_t)(data[1] & 0x07);
switch (extension) {
case FIB_FIDC_EXTENSION_PAGING:
GR_LOG_DEBUG(d_logger, "paging - not supported yet");
break;
case FIB_FIDC_EXTENSION_TMC:
GR_LOG_DEBUG(d_logger, "TMC (traffic message channel) - not supported yet");
break;
case FIB_FIDC_EXTENSION_EWS:
GR_LOG_DEBUG(d_logger, "EWS (emergency warning service) - not supported yet");
break;
default:
d_logger->debug("unsupported extension ({})",(int) extension);
}
break;
case FIB_FIG_TYPE_CA:
GR_LOG_DEBUG(d_logger, "FIB type CA (conditional access) not supported yet");
break;
default:
GR_LOG_DEBUG(d_logger, "unsupported FIG type");
break;
}
return 0;
}
int
fib_sink_vb_impl::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
const char *in = (const char *) input_items[0];
for (int i = 0; i < noutput_items; i++) {
process_fib(in);
in += 32;
}
return noutput_items;
}
}
}
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