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/*
Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Her Majesty the
Queen in Right of Canada (Communications Research Center Canada)
Copyright (C) 2017
Matthias P. Braendli, matthias.braendli@mpb.li
http://opendigitalradio.org
*/
/*
This file is part of ODR-DabMod.
ODR-DabMod 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 of the
License, or (at your option) any later version.
ODR-DabMod 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 ODR-DabMod. If not, see <http://www.gnu.org/licenses/>.
*/
#include <queue>
#include <iostream>
#include <fstream>
#include <string>
#include <sys/types.h>
#include "PcDebug.h"
#include "TimestampDecoder.h"
#include "Eti.h"
#include "Log.h"
//#define MDEBUG(fmt, args...) fprintf (LOG, "*****" fmt , ## args)
#define MDEBUG(fmt, args...) PDEBUG(fmt, ## args)
TimestampDecoder::TimestampDecoder(double& offset_s) :
RemoteControllable("tist"),
timestamp_offset(offset_s)
{
// Properly initialise temp_time
memset(&temp_time, 0, sizeof(temp_time));
const time_t timep = 0;
gmtime_r(&timep, &temp_time);
RC_ADD_PARAMETER(offset, "TIST offset [s]");
RC_ADD_PARAMETER(timestamp, "FCT and timestamp [s]");
etiLog.level(info) << "Setting up timestamp decoder with " <<
timestamp_offset << " offset";
}
std::shared_ptr<frame_timestamp> TimestampDecoder::getTimestamp()
{
std::shared_ptr<frame_timestamp> ts =
std::make_shared<frame_timestamp>();
/* Push new timestamp into queue */
ts->timestamp_valid = full_timestamp_received;
ts->timestamp_sec = time_secs;
ts->timestamp_pps = time_pps;
ts->fct = latestFCT;
ts->fp = latestFP;
ts->timestamp_refresh = offset_changed;
offset_changed = false;
MDEBUG("time_secs=%d, time_pps=%f\n", time_secs,
(double)time_pps / 16384000.0);
*ts += timestamp_offset;
return ts;
}
void TimestampDecoder::pushMNSCData(uint8_t framephase, uint16_t mnsc)
{
struct eti_MNSC_TIME_0 *mnsc0;
struct eti_MNSC_TIME_1 *mnsc1;
struct eti_MNSC_TIME_2 *mnsc2;
struct eti_MNSC_TIME_3 *mnsc3;
switch (framephase)
{
case 0:
mnsc0 = (struct eti_MNSC_TIME_0*)&mnsc;
enableDecode = (mnsc0->type == 0) &&
(mnsc0->identifier == 0);
{
const time_t timep = 0;
gmtime_r(&timep, &temp_time);
}
break;
case 1:
mnsc1 = (struct eti_MNSC_TIME_1*)&mnsc;
temp_time.tm_sec = mnsc1->second_tens * 10 + mnsc1->second_unit;
temp_time.tm_min = mnsc1->minute_tens * 10 + mnsc1->minute_unit;
if (!mnsc1->sync_to_frame)
{
enableDecode = false;
PDEBUG("TimestampDecoder: MNSC time info is not synchronised to frame\n");
}
break;
case 2:
mnsc2 = (struct eti_MNSC_TIME_2*)&mnsc;
temp_time.tm_hour = mnsc2->hour_tens * 10 + mnsc2->hour_unit;
temp_time.tm_mday = mnsc2->day_tens * 10 + mnsc2->day_unit;
break;
case 3:
mnsc3 = (struct eti_MNSC_TIME_3*)&mnsc;
temp_time.tm_mon = (mnsc3->month_tens * 10 + mnsc3->month_unit) - 1;
temp_time.tm_year = (mnsc3->year_tens * 10 + mnsc3->year_unit) + 100;
if (enableDecode)
{
full_timestamp_received = true;
updateTimestampSeconds(mktime(&temp_time));
}
break;
}
MDEBUG("TimestampDecoder::pushMNSCData(%d, 0x%x)\n", framephase, mnsc);
MDEBUG(" -> %s\n", asctime(&temp_time));
MDEBUG(" -> %zu\n", mktime(&temp_time));
}
void TimestampDecoder::updateTimestampSeconds(uint32_t secs)
{
if (inhibit_second_update > 0)
{
MDEBUG("TimestampDecoder::updateTimestampSeconds(%d) inhibit\n", secs);
inhibit_second_update--;
}
else
{
MDEBUG("TimestampDecoder::updateTimestampSeconds(%d) apply\n", secs);
time_secs = secs;
}
}
void TimestampDecoder::updateTimestampPPS(uint32_t pps)
{
MDEBUG("TimestampDecoder::updateTimestampPPS(%f)\n", (double)pps / 16384000.0);
if (time_pps > pps) // Second boundary crossed
{
MDEBUG("TimestampDecoder::updateTimestampPPS crossed second\n");
// The second for the next eight frames will not
// be defined by the MNSC
inhibit_second_update = 2;
time_secs += 1;
}
time_pps = pps;
}
void TimestampDecoder::updateTimestampEti(
uint8_t framephase,
uint16_t mnsc,
uint32_t pps, // In units of 1/16384000 s
int32_t fct)
{
updateTimestampPPS(pps);
pushMNSCData(framephase, mnsc);
latestFCT = fct;
latestFP = framephase;
}
void TimestampDecoder::updateTimestampEdi(
uint32_t seconds_utc,
uint32_t pps, // In units of 1/16384000 s
int32_t fct,
uint8_t framephase)
{
time_secs = seconds_utc;
time_pps = pps;
latestFCT = fct;
latestFP = framephase;
full_timestamp_received = true;
}
void TimestampDecoder::set_parameter(
const std::string& parameter,
const std::string& value)
{
using namespace std;
stringstream ss(value);
ss.exceptions ( stringstream::failbit | stringstream::badbit );
if (parameter == "offset") {
ss >> timestamp_offset;
offset_changed = true;
}
else if (parameter == "timestamp") {
throw ParameterError("timestamp is read-only");
}
else {
stringstream ss_err;
ss_err << "Parameter '" << parameter
<< "' is not exported by controllable " << get_rc_name();
throw ParameterError(ss_err.str());
}
}
const std::string TimestampDecoder::get_parameter(
const std::string& parameter) const
{
using namespace std;
stringstream ss;
if (parameter == "offset") {
ss << timestamp_offset;
}
else if (parameter == "timestamp") {
if (full_timestamp_received) {
ss.setf(std::ios_base::fixed, std::ios_base::floatfield);
ss << time_secs + ((double)time_pps / 16384000.0) <<
" for frame FCT " << latestFCT;
}
else {
throw ParameterError("Not available yet");
}
}
else {
ss << "Parameter '" << parameter <<
"' is not exported by controllable " << get_rc_name();
throw ParameterError(ss.str());
}
return ss.str();
}
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