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vdr/nit.c
Klaus Schmidinger 4ee983a294 Version 2.1.8 
VDR developer version 2.1.8 is now available at

       ftp://ftp.tvdr.de/vdr/Developer/vdr-2.1.8.tar.bz2

A 'diff' against the previous version is available at

       ftp://ftp.tvdr.de/vdr/Developer/vdr-2.1.7-2.1.8.diff

MD5 checksums:

1d2751e87def9b18b448513f24e635e9  vdr-2.1.8.tar.bz2
0487e037278f6f6684a7933674910f05  vdr-2.1.7-2.1.8.diff

WARNING:
========

This is a *developer* version. Even though *I* use it in my productive
environment, I strongly recommend that you only use it under controlled
conditions and for testing and debugging.

From the HISTORY file:
- Updated the Italian OSD texts (thanks to Diego Pierotto).
- Fixed "warning: invalid suffix on literal" with GCC 4.8 and C++11 (thanks to Joerg
  Bornkessel).
- Fixed the link to "svdrpsend (1)" in the vdr.1 man page (thanks to Chris Mayo).
- Updated the Finnish OSD texts (thanks to Rolf Ahrenberg).
- Updated the Romanian OSD texts (thanks to Lucian Muresan).
- Added functionality based on the "jumpplay" patch from Torsten Kunkel and Thomas
  Günther:
  + The new option "Setup/Replay/Pause replay when jumping to a mark" can be used to
    turn off pausing replay when jumping to an editing mark with the '9' key.
  + The new option "Setup/Replay/Skip edited parts" can be used to automatically skip
    the edited parts of a recording during replay, without the need to actually cut
    the recording.
  + The new option "Setup/Replay/Pause replay at last mark" can be used to make replay
    go into Pause mode when it has reached the last "end" mark.
  + The '8' key for testing an edited sequence now also jumps to the next *end*
    mark if "Setup/Replay/Skip edited parts" is active. This allows for testing edits
    in recordings that have actually been cut, as well as recordings that have not
    been cut, in case "Skip edited parts" is enabled.
- Added support for "Satellite Channel Routing" (SCR) according to EN50607, also
  known as "JESS" (thanks to Manfred Völkel and Frank Neumann).
- The keys '1' and '3' can now be used in replay mode to position an editing mark
  in "binary" mode (based on a patch from Rolf Ahrenberg, with modifications by Helmut
  Auer). See MANUAL, section "Editing a Recording".
- The Yellow button in the "Setup/CAM" menu can now be used to put the selected
  CAM into a mode where it remains assigned to a device that is tuned to the current
  channel until the smart card it contains is activated and the CAM thus starts to
  descramble (see MANUAL, section "Setup/CAM" for details).
- Updated the Estonian OSD texts (thanks to Arthur Konovalov).
- Added ARGSDIR to the ONEDIR section of Make.config.template (suggested by Derek
  Kelly).
- Made cRecording::GetResume() public (suggested by Stefan Braun).
- Fixed setting the read index in cDvbPlayer::Goto() in case Still is false.
- The function cDvbPlayer::Goto() now automatically calls Play() if Still is false.
- Added support for LCN (Logical Channel Numbers), which plugins may use to sort
  channels (thanks to Rolf Ahrenberg).
2015-02-01 16:58:18 +01:00

401 lines
22 KiB
C
Raw Blame History

/*
* nit.c: NIT section filter
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: nit.c 3.4 2015/02/01 13:46:00 kls Exp $
*/
#include "nit.h"
#include <linux/dvb/frontend.h>
#include "channels.h"
#include "dvbdevice.h"
#include "eitscan.h"
#include "libsi/section.h"
#include "libsi/descriptor.h"
#include "tools.h"
#define DVB_SYSTEM_1 0 // see also dvbdevice.c
#define DVB_SYSTEM_2 1
cNitFilter::cNitFilter(cSdtFilter *SdtFilter)
{
sdtFilter = SdtFilter;
numNits = 0;
networkId = 0;
Set(0x10, 0x40); // NIT
}
void cNitFilter::SetStatus(bool On)
{
cFilter::SetStatus(On);
numNits = 0;
networkId = 0;
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;
// Some broadcasters send more than one NIT, with no apparent way of telling which
// one is the right one to use. This is an attempt to find the NIT that contains
// the transponder it was transmitted on and use only that one:
int ThisNIT = -1;
if (!networkId) {
for (int i = 0; i < numNits; i++) {
if (nits[i].networkId == nit.getNetworkId()) {
if (nit.getSectionNumber() == 0) {
// all NITs have passed by
for (int j = 0; j < numNits; j++) {
if (nits[j].hasTransponder) {
networkId = nits[j].networkId;
//printf("taking NIT with network ID %d\n", networkId);
//XXX what if more than one NIT contains this transponder???
break;
}
}
if (!networkId) {
//printf("none of the NITs contains transponder %d\n", Transponder());
return;
}
}
else {
ThisNIT = i;
break;
}
}
}
if (!networkId && ThisNIT < 0 && numNits < MAXNITS) {
if (nit.getSectionNumber() == 0) {
*nits[numNits].name = 0;
SI::Descriptor *d;
for (SI::Loop::Iterator it; (d = nit.commonDescriptors.getNext(it)); ) {
switch (d->getDescriptorTag()) {
case SI::NetworkNameDescriptorTag: {
SI::NetworkNameDescriptor *nnd = (SI::NetworkNameDescriptor *)d;
nnd->name.getText(nits[numNits].name, MAXNETWORKNAME);
}
break;
default: ;
}
delete d;
}
nits[numNits].networkId = nit.getNetworkId();
nits[numNits].hasTransponder = false;
//printf("NIT[%d] %5d '%s'\n", numNits, nits[numNits].networkId, nits[numNits].name);
ThisNIT = numNits;
numNits++;
}
}
}
else if (networkId != nit.getNetworkId())
return; // ignore all other NITs
else if (!sectionSyncer.Sync(nit.getVersionNumber(), nit.getSectionNumber(), nit.getLastSectionNumber()))
return;
if (!Channels.Lock(true, 10))
return;
SI::NIT::TransportStream ts;
for (SI::Loop::Iterator it; nit.transportStreamLoop.getNext(ts, it); ) {
SI::Descriptor *d;
SI::Loop::Iterator it2;
SI::FrequencyListDescriptor *fld = (SI::FrequencyListDescriptor *)ts.transportStreamDescriptors.getNext(it2, SI::FrequencyListDescriptorTag);
int NumFrequencies = fld ? fld->frequencies.getCount() + 1 : 1;
int Frequencies[NumFrequencies];
if (fld) {
int ct = fld->getCodingType();
if (ct > 0) {
int n = 1;
for (SI::Loop::Iterator it3; fld->frequencies.hasNext(it3); ) {
int f = fld->frequencies.getNext(it3);
switch (ct) {
case 1: f = BCD2INT(f) / 100; break;
case 2: f = BCD2INT(f) / 10; break;
case 3: f = f * 10; break;
default: ;
}
Frequencies[n++] = f;
}
}
else
NumFrequencies = 1;
}
delete fld;
for (SI::Loop::Iterator it2; (d = ts.transportStreamDescriptors.getNext(it2)); ) {
switch (d->getDescriptorTag()) {
case SI::SatelliteDeliverySystemDescriptorTag: {
SI::SatelliteDeliverySystemDescriptor *sd = (SI::SatelliteDeliverySystemDescriptor *)d;
cDvbTransponderParameters dtp;
int Source = cSource::FromData(cSource::stSat, BCD2INT(sd->getOrbitalPosition()), sd->getWestEastFlag());
int Frequency = Frequencies[0] = BCD2INT(sd->getFrequency()) / 100;
static char Polarizations[] = { 'H', 'V', 'L', 'R' };
dtp.SetPolarization(Polarizations[sd->getPolarization()]);
static int CodeRates[] = { FEC_NONE, FEC_1_2, FEC_2_3, FEC_3_4, FEC_5_6, FEC_7_8, FEC_8_9, FEC_3_5, FEC_4_5, FEC_9_10, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_NONE };
dtp.SetCoderateH(CodeRates[sd->getFecInner()]);
static int Modulations[] = { QAM_AUTO, QPSK, PSK_8, QAM_16 };
dtp.SetModulation(Modulations[sd->getModulationType()]);
dtp.SetSystem(sd->getModulationSystem() ? DVB_SYSTEM_2 : DVB_SYSTEM_1);
static int RollOffs[] = { ROLLOFF_35, ROLLOFF_25, ROLLOFF_20, ROLLOFF_AUTO };
dtp.SetRollOff(sd->getModulationSystem() ? RollOffs[sd->getRollOff()] : ROLLOFF_AUTO);
int SymbolRate = BCD2INT(sd->getSymbolRate()) / 10;
if (ThisNIT >= 0) {
for (int n = 0; n < NumFrequencies; n++) {
if (ISTRANSPONDER(cChannel::Transponder(Frequencies[n], dtp.Polarization()), Transponder())) {
nits[ThisNIT].hasTransponder = true;
//printf("has transponder %d\n", Transponder());
break;
}
}
break;
}
if (Setup.UpdateChannels >= 5) {
bool found = false;
bool forceTransponderUpdate = 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()) {
int transponder = Channel->Transponder();
found = true;
if (!ISTRANSPONDER(cChannel::Transponder(Frequency, dtp.Polarization()), transponder)) {
for (int n = 0; n < NumFrequencies; n++) {
if (ISTRANSPONDER(cChannel::Transponder(Frequencies[n], dtp.Polarization()), transponder)) {
Frequency = Frequencies[n];
break;
}
}
}
if (ISTRANSPONDER(cChannel::Transponder(Frequency, dtp.Polarization()), Transponder())) // only modify channels if we're actually receiving this transponder
Channel->SetTransponderData(Source, Frequency, SymbolRate, dtp.ToString('S'));
else if (Channel->Srate() != SymbolRate || strcmp(Channel->Parameters(), dtp.ToString('S')))
forceTransponderUpdate = true; // get us receiving this transponder
}
}
if (!found || forceTransponderUpdate) {
for (int n = 0; n < NumFrequencies; n++) {
cChannel *Channel = new cChannel;
Channel->SetId(ts.getOriginalNetworkId(), ts.getTransportStreamId(), 0, 0);
if (Channel->SetTransponderData(Source, Frequencies[n], SymbolRate, dtp.ToString('S')))
EITScanner.AddTransponder(Channel);
else
delete Channel;
}
}
}
sdtFilter->Trigger(Source);
}
break;
case SI::S2SatelliteDeliverySystemDescriptorTag: {
if (Setup.UpdateChannels >= 5) {
for (cChannel *Channel = Channels.First(); Channel; Channel = Channels.Next(Channel)) {
if (!Channel->GroupSep() && cSource::IsSat(Channel->Source()) && Channel->Nid() == ts.getOriginalNetworkId() && Channel->Tid() == ts.getTransportStreamId()) {
SI::S2SatelliteDeliverySystemDescriptor *sd = (SI::S2SatelliteDeliverySystemDescriptor *)d;
cDvbTransponderParameters dtp(Channel->Parameters());
dtp.SetSystem(DVB_SYSTEM_2);
dtp.SetStreamId(sd->getInputStreamIdentifier());
Channel->SetTransponderData(Channel->Source(), Channel->Frequency(), Channel->Srate(), dtp.ToString('S'));
break;
}
}
}
}
break;
case SI::CableDeliverySystemDescriptorTag: {
SI::CableDeliverySystemDescriptor *sd = (SI::CableDeliverySystemDescriptor *)d;
cDvbTransponderParameters dtp;
int Source = cSource::FromData(cSource::stCable);
int Frequency = Frequencies[0] = 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_8_9, FEC_3_5, FEC_4_5, FEC_9_10, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_NONE };
dtp.SetCoderateH(CodeRates[sd->getFecInner()]);
static int Modulations[] = { QPSK, QAM_16, QAM_32, QAM_64, QAM_128, QAM_256, QAM_AUTO };
dtp.SetModulation(Modulations[min(sd->getModulation(), 6)]);
int SymbolRate = BCD2INT(sd->getSymbolRate()) / 10;
if (ThisNIT >= 0) {
for (int n = 0; n < NumFrequencies; n++) {
if (ISTRANSPONDER(Frequencies[n] / 1000, Transponder())) {
nits[ThisNIT].hasTransponder = true;
//printf("has transponder %d\n", Transponder());
break;
}
}
break;
}
if (Setup.UpdateChannels >= 5) {
bool found = false;
bool forceTransponderUpdate = 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()) {
int transponder = Channel->Transponder();
found = true;
if (!ISTRANSPONDER(Frequency / 1000, transponder)) {
for (int n = 0; n < NumFrequencies; n++) {
if (ISTRANSPONDER(Frequencies[n] / 1000, transponder)) {
Frequency = Frequencies[n];
break;
}
}
}
if (ISTRANSPONDER(Frequency / 1000, Transponder())) // only modify channels if we're actually receiving this transponder
Channel->SetTransponderData(Source, Frequency, SymbolRate, dtp.ToString('C'));
else if (Channel->Srate() != SymbolRate || strcmp(Channel->Parameters(), dtp.ToString('C')))
forceTransponderUpdate = true; // get us receiving this transponder
}
}
if (!found || forceTransponderUpdate) {
for (int n = 0; n < NumFrequencies; n++) {
cChannel *Channel = new cChannel;
Channel->SetId(ts.getOriginalNetworkId(), ts.getTransportStreamId(), 0, 0);
if (Channel->SetTransponderData(Source, Frequencies[n], SymbolRate, dtp.ToString('C')))
EITScanner.AddTransponder(Channel);
else
delete Channel;
}
}
}
sdtFilter->Trigger(Source);
}
break;
case SI::TerrestrialDeliverySystemDescriptorTag: {
SI::TerrestrialDeliverySystemDescriptor *sd = (SI::TerrestrialDeliverySystemDescriptor *)d;
cDvbTransponderParameters dtp;
int Source = cSource::FromData(cSource::stTerr);
int Frequency = Frequencies[0] = sd->getFrequency() * 10;
static int Bandwidths[] = { 8000000, 7000000, 6000000, 5000000, 0, 0, 0, 0 };
dtp.SetBandwidth(Bandwidths[sd->getBandwidth()]);
static int Constellations[] = { QPSK, QAM_16, QAM_64, QAM_AUTO };
dtp.SetModulation(Constellations[sd->getConstellation()]);
dtp.SetSystem(DVB_SYSTEM_1);
static int Hierarchies[] = { HIERARCHY_NONE, HIERARCHY_1, HIERARCHY_2, HIERARCHY_4, HIERARCHY_AUTO, HIERARCHY_AUTO, HIERARCHY_AUTO, HIERARCHY_AUTO };
dtp.SetHierarchy(Hierarchies[sd->getHierarchy()]);
static int CodeRates[] = { FEC_1_2, FEC_2_3, FEC_3_4, FEC_5_6, FEC_7_8, FEC_AUTO, FEC_AUTO, FEC_AUTO };
dtp.SetCoderateH(CodeRates[sd->getCodeRateHP()]);
dtp.SetCoderateL(CodeRates[sd->getCodeRateLP()]);
static int GuardIntervals[] = { GUARD_INTERVAL_1_32, GUARD_INTERVAL_1_16, GUARD_INTERVAL_1_8, GUARD_INTERVAL_1_4 };
dtp.SetGuard(GuardIntervals[sd->getGuardInterval()]);
static int TransmissionModes[] = { TRANSMISSION_MODE_2K, TRANSMISSION_MODE_8K, TRANSMISSION_MODE_4K, TRANSMISSION_MODE_AUTO };
dtp.SetTransmission(TransmissionModes[sd->getTransmissionMode()]);
if (ThisNIT >= 0) {
for (int n = 0; n < NumFrequencies; n++) {
if (ISTRANSPONDER(Frequencies[n] / 1000000, Transponder())) {
nits[ThisNIT].hasTransponder = true;
//printf("has transponder %d\n", Transponder());
break;
}
}
break;
}
if (Setup.UpdateChannels >= 5) {
bool found = false;
bool forceTransponderUpdate = 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()) {
int transponder = Channel->Transponder();
found = true;
if (!ISTRANSPONDER(Frequency / 1000000, transponder)) {
for (int n = 0; n < NumFrequencies; n++) {
if (ISTRANSPONDER(Frequencies[n] / 1000000, transponder)) {
Frequency = Frequencies[n];
break;
}
}
}
if (ISTRANSPONDER(Frequency / 1000000, Transponder())) // only modify channels if we're actually receiving this transponder
Channel->SetTransponderData(Source, Frequency, 0, dtp.ToString('T'));
else if (strcmp(Channel->Parameters(), dtp.ToString('T')))
forceTransponderUpdate = true; // get us receiving this transponder
}
}
if (!found || forceTransponderUpdate) {
for (int n = 0; n < NumFrequencies; n++) {
cChannel *Channel = new cChannel;
Channel->SetId(ts.getOriginalNetworkId(), ts.getTransportStreamId(), 0, 0);
if (Channel->SetTransponderData(Source, Frequencies[n], 0, dtp.ToString('T')))
EITScanner.AddTransponder(Channel);
else
delete Channel;
}
}
}
sdtFilter->Trigger(Source);
}
break;
case SI::ExtensionDescriptorTag: {
SI::ExtensionDescriptor *sd = (SI::ExtensionDescriptor *)d;
switch (sd->getExtensionDescriptorTag()) {
case SI::T2DeliverySystemDescriptorTag: {
if (Setup.UpdateChannels >= 5) {
for (cChannel *Channel = Channels.First(); Channel; Channel = Channels.Next(Channel)) {
int Source = cSource::FromData(cSource::stTerr);
if (!Channel->GroupSep() && Channel->Source() == Source && Channel->Nid() == ts.getOriginalNetworkId() && Channel->Tid() == ts.getTransportStreamId()) {
SI::T2DeliverySystemDescriptor *td = (SI::T2DeliverySystemDescriptor *)d;
int Frequency = Channel->Frequency();
int SymbolRate = Channel->Srate();
cDvbTransponderParameters dtp(Channel->Parameters());
dtp.SetSystem(DVB_SYSTEM_2);
dtp.SetStreamId(td->getPlpId());
dtp.SetT2SystemId(td->getT2SystemId());
if (td->getExtendedDataFlag()) {
dtp.SetSisoMiso(td->getSisoMiso());
static int T2Bandwidths[] = { 8000000, 7000000, 6000000, 5000000, 10000000, 1712000, 0, 0 };
dtp.SetBandwidth(T2Bandwidths[td->getBandwidth()]);
static int T2GuardIntervals[] = { GUARD_INTERVAL_1_32, GUARD_INTERVAL_1_16, GUARD_INTERVAL_1_8, GUARD_INTERVAL_1_4, GUARD_INTERVAL_1_128, GUARD_INTERVAL_19_128, GUARD_INTERVAL_19_256, 0 };
dtp.SetGuard(T2GuardIntervals[td->getGuardInterval()]);
static int T2TransmissionModes[] = { TRANSMISSION_MODE_2K, TRANSMISSION_MODE_8K, TRANSMISSION_MODE_4K, TRANSMISSION_MODE_1K, TRANSMISSION_MODE_16K, TRANSMISSION_MODE_32K, TRANSMISSION_MODE_AUTO, TRANSMISSION_MODE_AUTO };
dtp.SetTransmission(T2TransmissionModes[td->getTransmissionMode()]);
//TODO add parsing of frequencies
}
Channel->SetTransponderData(Source, Frequency, SymbolRate, dtp.ToString('T'));
}
}
}
}
break;
default: ;
}
}
break;
case SI::LogicalChannelDescriptorTag: {
SI::LogicalChannelDescriptor *lcd = (SI::LogicalChannelDescriptor *)d;
SI::LogicalChannelDescriptor::LogicalChannel LogicalChannel;
for (SI::Loop::Iterator it4; lcd->logicalChannelLoop.getNext(LogicalChannel, it4); ) {
int lcn = LogicalChannel.getLogicalChannelNumber();
int sid = LogicalChannel.getServiceId();
if (LogicalChannel.getVisibleServiceFlag()) {
for (cChannel *Channel = Channels.First(); Channel; Channel = Channels.Next(Channel)) {
if (!Channel->GroupSep() && Channel->Sid() == sid && Channel->Nid() == ts.getOriginalNetworkId() && Channel->Tid() == ts.getTransportStreamId()) {
Channel->SetLcn(lcn);
break;
}
}
}
}
}
break;
case SI::HdSimulcastLogicalChannelDescriptorTag: {
SI::HdSimulcastLogicalChannelDescriptor *lcd = (SI::HdSimulcastLogicalChannelDescriptor *)d;
SI::HdSimulcastLogicalChannelDescriptor::HdSimulcastLogicalChannel HdSimulcastLogicalChannel;
for (SI::Loop::Iterator it4; lcd->hdSimulcastLogicalChannelLoop.getNext(HdSimulcastLogicalChannel, it4); ) {
int lcn = HdSimulcastLogicalChannel.getLogicalChannelNumber();
int sid = HdSimulcastLogicalChannel.getServiceId();
if (HdSimulcastLogicalChannel.getVisibleServiceFlag()) {
for (cChannel *Channel = Channels.First(); Channel; Channel = Channels.Next(Channel)) {
if (!Channel->GroupSep() && Channel->Sid() == sid && Channel->Nid() == ts.getOriginalNetworkId() && Channel->Tid() == ts.getTransportStreamId()) {
Channel->SetLcn(lcn);
break;
}
}
}
}
}
break;
default: ;
}
delete d;
}
}
Channels.Unlock();
}
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