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-rw-r--r--nit.c99
1 files changed, 88 insertions, 11 deletions
diff --git a/nit.c b/nit.c
index 1ac731c..f388716 100644
--- a/nit.c
+++ b/nit.c
@@ -4,7 +4,7 @@
* 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 $
+ * $Id: nit.c 1.5 2004/01/18 16:32:45 kls Exp $
*/
#include "nit.h"
@@ -17,12 +17,16 @@
cNitFilter::cNitFilter(void)
{
+ numNits = 0;
+ networkId = 0;
Set(0x10, 0x40); // NIT
}
void cNitFilter::SetStatus(bool On)
{
cFilter::SetStatus(On);
+ numNits = 0;
+ networkId = 0;
sectionSyncer.Reset();
}
@@ -31,7 +35,59 @@ 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()))
+ // 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 contaisn 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);
+ }
+ break;
+ default: ;
+ }
+ }
+ 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;
@@ -46,9 +102,16 @@ void cNitFilter::Process(u_short Pid, u_char Tid, const u_char *Data, int Length
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 };
+ static int CodeRates[] = { FEC_NONE, FEC_1_2, FEC_2_3, FEC_3_4, FEC_5_6, FEC_7_8, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_NONE };
int CodeRate = CodeRates[sd->getFecInner()];
int SymbolRate = BCD2INT(sd->getSymbolRate()) / 10;
+ if (ThisNIT >= 0) {
+ if (ISTRANSPONDER(Frequency, Transponder())) {
+ nits[ThisNIT].hasTransponder = true;
+ //printf("has transponder %d\n", Transponder());
+ }
+ break;
+ }
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()) {
@@ -72,11 +135,18 @@ void cNitFilter::Process(u_short Pid, u_char Tid, const u_char *Data, int Length
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 };
+ static int CodeRates[] = { FEC_NONE, FEC_1_2, FEC_2_3, FEC_3_4, FEC_5_6, FEC_7_8, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, FEC_AUTO, 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()];
+ static int Modulations[] = { QPSK, QAM_16, QAM_32, QAM_64, QAM_128, QAM_256, QAM_AUTO };
+ int Modulation = Modulations[min(sd->getModulation(), 6)];
int SymbolRate = BCD2INT(sd->getSymbolRate()) / 10;
+ if (ThisNIT >= 0) {
+ if (ISTRANSPONDER(Frequency / 1000, Transponder())) {
+ nits[ThisNIT].hasTransponder = true;
+ //printf("has transponder %d\n", Transponder());
+ }
+ break;
+ }
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()) {
@@ -97,21 +167,28 @@ void cNitFilter::Process(u_short Pid, u_char Tid, const u_char *Data, int Length
break;
case SI::TerrestrialDeliverySystemDescriptorTag: {
SI::TerrestrialDeliverySystemDescriptor *sd = (SI::TerrestrialDeliverySystemDescriptor *)d;
- int Source = cSource::FromData(cSource::stCable);
+ int Source = cSource::FromData(cSource::stTerr);
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 };
+ static int Bandwidths[] = { BANDWIDTH_8_MHZ, BANDWIDTH_7_MHZ, BANDWIDTH_6_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 };
+ static int Hierarchies[] = { HIERARCHY_NONE, HIERARCHY_1, HIERARCHY_2, HIERARCHY_4, HIERARCHY_AUTO, HIERARCHY_AUTO, HIERARCHY_AUTO, HIERARCHY_AUTO };
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 };
+ static int CodeRates[] = { FEC_1_2, FEC_2_3, FEC_3_4, FEC_5_6, FEC_7_8, FEC_AUTO, FEC_AUTO, FEC_AUTO };
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 };
+ static int GuardIntervals[] = { GUARD_INTERVAL_1_32, GUARD_INTERVAL_1_16, GUARD_INTERVAL_1_8, GUARD_INTERVAL_1_4 };
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()];
+ if (ThisNIT >= 0) {
+ if (ISTRANSPONDER(Frequency / 1000000, Transponder())) {
+ nits[ThisNIT].hasTransponder = true;
+ //printf("has transponder %d\n", Transponder());
+ }
+ break;
+ }
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()) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-21 17:27:16 +0000