mirror of https://github.com/VDR4Arch/vdr.git
140 lines
7.7 KiB
C
140 lines
7.7 KiB
C
/*
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* nit.c: NIT section filter
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*
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
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*
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* $Id: nit.c 1.1 2004/01/11 15:42:51 kls Exp $
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*/
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#include "nit.h"
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#include <linux/dvb/frontend.h>
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#include "channels.h"
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#include "eitscan.h"
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#include "libsi/section.h"
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#include "libsi/descriptor.h"
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#include "tools.h"
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cNitFilter::cNitFilter(void)
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{
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Set(0x10, 0x40); // NIT
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}
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void cNitFilter::SetStatus(bool On)
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{
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cFilter::SetStatus(On);
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sectionSyncer.Reset();
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}
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void cNitFilter::Process(u_short Pid, u_char Tid, const u_char *Data, int Length)
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{
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SI::NIT nit(Data, false);
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if (!nit.CheckCRCAndParse())
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return;
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if (!sectionSyncer.Sync(nit.getVersionNumber(), nit.getSectionNumber(), nit.getLastSectionNumber()))
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return;
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if (!Channels.Lock(true, 10))
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return;
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for (SI::Loop::Iterator it; nit.transportStreamLoop.hasNext(it); ) {
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SI::NIT::TransportStream ts = nit.transportStreamLoop.getNext(it);
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SI::Descriptor *d;
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for (SI::Loop::Iterator it2; (d = ts.transportStreamDescriptors.getNext(it2)); ) {
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switch (d->getDescriptorTag()) {
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case SI::SatelliteDeliverySystemDescriptorTag: {
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SI::SatelliteDeliverySystemDescriptor *sd = (SI::SatelliteDeliverySystemDescriptor *)d;
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int Source = cSource::FromData(cSource::stSat, BCD2INT(sd->getOrbitalPosition()), sd->getWestEastFlag());
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int Frequency = BCD2INT(sd->getFrequency()) / 100;
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static char Polarizations[] = { 'h', 'v', 'l', 'r' };
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char Polarization = Polarizations[sd->getPolarization()];
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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 };
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int CodeRate = CodeRates[sd->getFecInner()];
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int SymbolRate = BCD2INT(sd->getSymbolRate()) / 10;
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bool found = false;
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for (cChannel *Channel = Channels.First(); Channel; Channel = Channels.Next(Channel)) {
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if (!Channel->GroupSep() && Channel->Source() == Source && Channel->Nid() == ts.getOriginalNetworkId() && Channel->Tid() == ts.getTransportStreamId()) {
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if (Setup.UpdateChannels >= 4)
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Channel->SetSatTransponderData(Source, Frequency, Polarization, SymbolRate, CodeRate);
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found = true;
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}
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}
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if (!found && Setup.UpdateChannels >= 4) {
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cChannel *Channel = new cChannel;
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Channel->SetId(ts.getOriginalNetworkId(), ts.getTransportStreamId(), 0, 0, false);
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if (Channel->SetSatTransponderData(Source, Frequency, Polarization, SymbolRate, CodeRate, false))
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EITScanner.AddTransponder(Channel);
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else
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delete Channel;
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}
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}
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break;
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case SI::CableDeliverySystemDescriptorTag: {
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SI::CableDeliverySystemDescriptor *sd = (SI::CableDeliverySystemDescriptor *)d;
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int Source = cSource::FromData(cSource::stCable);
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int Frequency = BCD2INT(sd->getFrequency()) / 10;
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//XXX FEC_outer???
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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 };
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int CodeRate = CodeRates[sd->getFecInner()];
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static int Modulations[] = { QPSK, QAM_16, QAM_32, QAM_64, QAM_128, QAM_256 };
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int Modulation = Modulations[sd->getModulation()];
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int SymbolRate = BCD2INT(sd->getSymbolRate()) / 10;
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bool found = false;
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for (cChannel *Channel = Channels.First(); Channel; Channel = Channels.Next(Channel)) {
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if (!Channel->GroupSep() && Channel->Source() == Source && Channel->Nid() == ts.getOriginalNetworkId() && Channel->Tid() == ts.getTransportStreamId()) {
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if (Setup.UpdateChannels >= 4)
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Channel->SetCableTransponderData(Source, Frequency, Modulation, SymbolRate, CodeRate);
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found = true;
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}
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}
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if (!found && Setup.UpdateChannels >= 4) {
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cChannel *Channel = new cChannel;
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Channel->SetId(ts.getOriginalNetworkId(), ts.getTransportStreamId(), 0, 0, false);
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if (Channel->SetCableTransponderData(Source, Frequency, Modulation, SymbolRate, CodeRate, false))
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EITScanner.AddTransponder(Channel);
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else
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delete Channel;
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}
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}
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break;
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case SI::TerrestrialDeliverySystemDescriptorTag: {
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SI::TerrestrialDeliverySystemDescriptor *sd = (SI::TerrestrialDeliverySystemDescriptor *)d;
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int Source = cSource::FromData(cSource::stCable);
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int Frequency = sd->getFrequency() * 10;
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static int Bandwidths[] = { BANDWIDTH_6_MHZ, BANDWIDTH_7_MHZ, BANDWIDTH_8_MHZ, BANDWIDTH_AUTO, BANDWIDTH_AUTO, BANDWIDTH_AUTO, BANDWIDTH_AUTO, BANDWIDTH_AUTO };
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int Bandwidth = Bandwidths[sd->getBandwidth()];
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static int Constellations[] = { QPSK, QAM_16, QAM_64, QAM_AUTO };
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int Constellation = Constellations[sd->getConstellation()];
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static int Hierarchies[] = { HIERARCHY_NONE, HIERARCHY_1, HIERARCHY_2, HIERARCHY_4 };
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int Hierarchy = Hierarchies[sd->getHierarchy()];
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static int CodeRates[] = { FEC_1_2, FEC_2_3, FEC_3_4, FEC_5_6, FEC_7_8, FEC_NONE, FEC_NONE, FEC_NONE };
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int CodeRateHP = CodeRates[sd->getCodeRateHP()];
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int CodeRateLP = CodeRates[sd->getCodeRateLP()];
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static int GuardIntervals[] = { GUARD_INTERVAL_1_4, GUARD_INTERVAL_1_8, GUARD_INTERVAL_1_16, GUARD_INTERVAL_1_32 };
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int GuardInterval = GuardIntervals[sd->getGuardInterval()];
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static int TransmissionModes[] = { TRANSMISSION_MODE_2K, TRANSMISSION_MODE_8K, TRANSMISSION_MODE_AUTO, TRANSMISSION_MODE_AUTO };
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int TransmissionMode = TransmissionModes[sd->getTransmissionMode()];
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bool found = false;
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for (cChannel *Channel = Channels.First(); Channel; Channel = Channels.Next(Channel)) {
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if (!Channel->GroupSep() && Channel->Source() == Source && Channel->Nid() == ts.getOriginalNetworkId() && Channel->Tid() == ts.getTransportStreamId()) {
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if (Setup.UpdateChannels >= 4)
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Channel->SetTerrTransponderData(Source, Frequency, Bandwidth, Constellation, Hierarchy, CodeRateHP, CodeRateLP, GuardInterval, TransmissionMode);
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found = true;
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}
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}
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if (!found && Setup.UpdateChannels >= 4) {
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cChannel *Channel = new cChannel;
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Channel->SetId(ts.getOriginalNetworkId(), ts.getTransportStreamId(), 0, 0, false);
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if (Channel->SetTerrTransponderData(Source, Frequency, Bandwidth, Constellation, Hierarchy, CodeRateHP, CodeRateLP, GuardInterval, TransmissionMode, false))
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EITScanner.AddTransponder(Channel);
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else
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delete Channel;
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}
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}
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break;
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default: ;
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}
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delete d;
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}
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}
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Channels.Unlock();
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}
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