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/*
* nit.c: NIT section filter
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: nit.c 1.1 2004/01/11 15:42:51 kls Exp $
*/
#include "nit.h"
#include <linux/dvb/frontend.h>
#include "channels.h"
#include "eitscan.h"
#include "libsi/section.h"
#include "libsi/descriptor.h"
#include "tools.h"
cNitFilter::cNitFilter(void)
{
Set(0x10, 0x40); // NIT
}
void cNitFilter::SetStatus(bool On)
{
cFilter::SetStatus(On);
sectionSyncer.Reset();
}
void cNitFilter::Process(u_short Pid, u_char Tid, const u_char *Data, int Length)
{
SI::NIT nit(Data, false);
if (!nit.CheckCRCAndParse())
return;
if (!sectionSyncer.Sync(nit.getVersionNumber(), nit.getSectionNumber(), nit.getLastSectionNumber()))
return;
if (!Channels.Lock(true, 10))
return;
for (SI::Loop::Iterator it; nit.transportStreamLoop.hasNext(it); ) {
SI::NIT::TransportStream ts = nit.transportStreamLoop.getNext(it);
SI::Descriptor *d;
for (SI::Loop::Iterator it2; (d = ts.transportStreamDescriptors.getNext(it2)); ) {
switch (d->getDescriptorTag()) {
case SI::SatelliteDeliverySystemDescriptorTag: {
SI::SatelliteDeliverySystemDescriptor *sd = (SI::SatelliteDeliverySystemDescriptor *)d;
int Source = cSource::FromData(cSource::stSat, BCD2INT(sd->getOrbitalPosition()), sd->getWestEastFlag());
int Frequency = BCD2INT(sd->getFrequency()) / 100;
static char Polarizations[] = { 'h', 'v', 'l', 'r' };
char Polarization = Polarizations[sd->getPolarization()];
static int CodeRates[] = { FEC_NONE, FEC_1_2, FEC_2_3, FEC_3_4, FEC_5_6, FEC_7_8, FEC_NONE, FEC_NONE, FEC_NONE, FEC_NONE, FEC_NONE, FEC_NONE, FEC_NONE, FEC_NONE, FEC_NONE, FEC_NONE };
int CodeRate = CodeRates[sd->getFecInner()];
int SymbolRate = BCD2INT(sd->getSymbolRate()) / 10;
bool found = false;
for (cChannel *Channel = Channels.First(); Channel; Channel = Channels.Next(Channel)) {
if (!Channel->GroupSep() && Channel->Source() == Source && Channel->Nid() == ts.getOriginalNetworkId() && Channel->Tid() == ts.getTransportStreamId()) {
if (Setup.UpdateChannels >= 4)
Channel->SetSatTransponderData(Source, Frequency, Polarization, SymbolRate, CodeRate);
found = true;
}
}
if (!found && Setup.UpdateChannels >= 4) {
cChannel *Channel = new cChannel;
Channel->SetId(ts.getOriginalNetworkId(), ts.getTransportStreamId(), 0, 0, false);
if (Channel->SetSatTransponderData(Source, Frequency, Polarization, SymbolRate, CodeRate, false))
EITScanner.AddTransponder(Channel);
else
delete Channel;
}
}
break;
case SI::CableDeliverySystemDescriptorTag: {
SI::CableDeliverySystemDescriptor *sd = (SI::CableDeliverySystemDescriptor *)d;
int Source = cSource::FromData(cSource::stCable);
int Frequency = BCD2INT(sd->getFrequency()) / 10;
//XXX FEC_outer???
static int CodeRates[] = { FEC_NONE, FEC_1_2, FEC_2_3, FEC_3_4, FEC_5_6, FEC_7_8, FEC_NONE, FEC_NONE, FEC_NONE, FEC_NONE, FEC_NONE, FEC_NONE, FEC_NONE, FEC_NONE, FEC_NONE, FEC_NONE };
int CodeRate = CodeRates[sd->getFecInner()];
static int Modulations[] = { QPSK, QAM_16, QAM_32, QAM_64, QAM_128, QAM_256 };
int Modulation = Modulations[sd->getModulation()];
int SymbolRate = BCD2INT(sd->getSymbolRate()) / 10;
bool found = false;
for (cChannel *Channel = Channels.First(); Channel; Channel = Channels.Next(Channel)) {
if (!Channel->GroupSep() && Channel->Source() == Source && Channel->Nid() == ts.getOriginalNetworkId() && Channel->Tid() == ts.getTransportStreamId()) {
if (Setup.UpdateChannels >= 4)
Channel->SetCableTransponderData(Source, Frequency, Modulation, SymbolRate, CodeRate);
found = true;
}
}
if (!found && Setup.UpdateChannels >= 4) {
cChannel *Channel = new cChannel;
Channel->SetId(ts.getOriginalNetworkId(), ts.getTransportStreamId(), 0, 0, false);
if (Channel->SetCableTransponderData(Source, Frequency, Modulation, SymbolRate, CodeRate, false))
EITScanner.AddTransponder(Channel);
else
delete Channel;
}
}
break;
case SI::TerrestrialDeliverySystemDescriptorTag: {
SI::TerrestrialDeliverySystemDescriptor *sd = (SI::TerrestrialDeliverySystemDescriptor *)d;
int Source = cSource::FromData(cSource::stCable);
int Frequency = sd->getFrequency() * 10;
static int Bandwidths[] = { BANDWIDTH_6_MHZ, BANDWIDTH_7_MHZ, BANDWIDTH_8_MHZ, BANDWIDTH_AUTO, BANDWIDTH_AUTO, BANDWIDTH_AUTO, BANDWIDTH_AUTO, BANDWIDTH_AUTO };
int Bandwidth = Bandwidths[sd->getBandwidth()];
static int Constellations[] = { QPSK, QAM_16, QAM_64, QAM_AUTO };
int Constellation = Constellations[sd->getConstellation()];
static int Hierarchies[] = { HIERARCHY_NONE, HIERARCHY_1, HIERARCHY_2, HIERARCHY_4 };
int Hierarchy = Hierarchies[sd->getHierarchy()];
static int CodeRates[] = { FEC_1_2, FEC_2_3, FEC_3_4, FEC_5_6, FEC_7_8, FEC_NONE, FEC_NONE, FEC_NONE };
int CodeRateHP = CodeRates[sd->getCodeRateHP()];
int CodeRateLP = CodeRates[sd->getCodeRateLP()];
static int GuardIntervals[] = { GUARD_INTERVAL_1_4, GUARD_INTERVAL_1_8, GUARD_INTERVAL_1_16, GUARD_INTERVAL_1_32 };
int GuardInterval = GuardIntervals[sd->getGuardInterval()];
static int TransmissionModes[] = { TRANSMISSION_MODE_2K, TRANSMISSION_MODE_8K, TRANSMISSION_MODE_AUTO, TRANSMISSION_MODE_AUTO };
int TransmissionMode = TransmissionModes[sd->getTransmissionMode()];
bool found = false;
for (cChannel *Channel = Channels.First(); Channel; Channel = Channels.Next(Channel)) {
if (!Channel->GroupSep() && Channel->Source() == Source && Channel->Nid() == ts.getOriginalNetworkId() && Channel->Tid() == ts.getTransportStreamId()) {
if (Setup.UpdateChannels >= 4)
Channel->SetTerrTransponderData(Source, Frequency, Bandwidth, Constellation, Hierarchy, CodeRateHP, CodeRateLP, GuardInterval, TransmissionMode);
found = true;
}
}
if (!found && Setup.UpdateChannels >= 4) {
cChannel *Channel = new cChannel;
Channel->SetId(ts.getOriginalNetworkId(), ts.getTransportStreamId(), 0, 0, false);
if (Channel->SetTerrTransponderData(Source, Frequency, Bandwidth, Constellation, Hierarchy, CodeRateHP, CodeRateLP, GuardInterval, TransmissionMode, false))
EITScanner.AddTransponder(Channel);
else
delete Channel;
}
}
break;
default: ;
}
delete d;
}
}
Channels.Unlock();
}
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