Added support for devices with more than one delivery system per frontend

2023-10-10 13:36:52 +02:00 · 2012-01-08 09:27:59 +01:00 · 2012-01-08 09:27:59 +01:00 · e197b04e4d
commit e197b04e4d
parent 76b6ae2cab
4 changed files with 165 additions and 88 deletions
--- a/6
+++ b/6
@ -6781,7 +6781,7 @@ Video Disk Recorder Revision History
 - Replaced all calls to sleep() with cCondWait::SleepMs() (thanks to Rolf Ahrenberg).
 - Fixed a crash with malformed SI data (patch from vdr-portal).

-2011-12-10: Version 1.7.23
+2012-01-07: Version 1.7.23

 - Removed the '.pl' suffix from svdrpsend.pl (sorry, I missed that one).
 - Fixed bonding more than two devices.
@ -6796,3 +6796,7 @@ Video Disk Recorder Revision History
  (triggered by Ville Skyttä pointing out that the variable HasSnr was unused).
 - Updated the Finnish OSD texts (thanks to Rolf Ahrenberg).
 - Added support for HbbTV to libsi (thanks to Christoph Haubrich).
+- Added support for devices with more than one delivery system per frontend.
+  This requires a DVB driver with version 5.5 or higher that can handle the
+  DTV_ENUM_DELSYS call. With older drivers it will fall back to one delivery
+  system per frontend.
--- a/dvbdevice.c
+++ b/dvbdevice.c
@ -4,7 +4,7 @@
 * See the main source file 'vdr.c' for copyright information and
 * how to reach the author.
 *
- * $Id: dvbdevice.c 2.50 2011/12/10 14:59:34 kls Exp $
+ * $Id: dvbdevice.c 2.51 2012/01/07 10:42:47 kls Exp $
 */

 #include "dvbdevice.h"
@ -81,9 +81,18 @@ const tDvbParameterMap ModulationValues[] = {
  {  -1, 0, NULL }
  };

-const tDvbParameterMap SystemValues[] = {
-  {   0, SYS_DVBS,  "DVB-S" },
-  {   1, SYS_DVBS2, "DVB-S2" },
+#define DVB_SYSTEM_1 0 // see also nit.c
+#define DVB_SYSTEM_2 1
+
+const tDvbParameterMap SystemValuesSat[] = {
+  {   0, DVB_SYSTEM_1, "DVB-S" },
+  {   1, DVB_SYSTEM_2, "DVB-S2" },
+  {  -1, 0, NULL }
+  };
+
+const tDvbParameterMap SystemValuesTerr[] = {
+  {   0, DVB_SYSTEM_1, "DVB-T" },
+  {   1, DVB_SYSTEM_2, "DVB-T2" },
  {  -1, 0, NULL }
  };

@ -179,7 +188,7 @@ cDvbTransponderParameters::cDvbTransponderParameters(const char *Parameters)
  coderateH    = FEC_AUTO;
  coderateL    = FEC_AUTO;
  modulation   = QPSK;
-  system       = SYS_DVBS;
+  system       = DVB_SYSTEM_1;
  transmission = TRANSMISSION_MODE_AUTO;
  guard        = GUARD_INTERVAL_AUTO;
  hierarchy    = HIERARCHY_AUTO;
@ -206,7 +215,7 @@ cString cDvbTransponderParameters::ToString(char Type) const
  ST("ACST")  q += PrintParameter(q, 'I', MapToUser(inversion, InversionValues));
  ST("ACST")  q += PrintParameter(q, 'M', MapToUser(modulation, ModulationValues));
  ST("  S ")  q += PrintParameter(q, 'O', MapToUser(rollOff, RollOffValues));
-  ST("  S ")  q += PrintParameter(q, 'S', MapToUser(system, SystemValues));
+  ST("  S ")  q += PrintParameter(q, 'S', MapToUser(system, SystemValuesSat)); // we only need the numerical value, so Sat or Terr doesn't matter
  ST("   T")  q += PrintParameter(q, 'T', MapToUser(transmission, TransmissionValues));
  ST("   T")  q += PrintParameter(q, 'Y', MapToUser(hierarchy, HierarchyValues));
  return buffer;
@ -242,7 +251,7 @@ bool cDvbTransponderParameters::Parse(const char *s)
          case 'M': s = ParseParameter(s, modulation, ModulationValues); break;
          case 'O': s = ParseParameter(s, rollOff, RollOffValues); break;
          case 'R': polarization = *s++; break;
-          case 'S': s = ParseParameter(s, system, SystemValues); break;
+          case 'S': s = ParseParameter(s, system, SystemValuesSat); break; // we only need the numerical value, so Sat or Terr doesn't matter
          case 'T': s = ParseParameter(s, transmission, TransmissionValues); break;
          case 'V': polarization = *s++; break;
          case 'Y': s = ParseParameter(s, hierarchy, HierarchyValues); break;
@ -268,10 +277,10 @@ private:
  int tuneTimeout;
  int lockTimeout;
  time_t lastTimeoutReport;
-  fe_delivery_system frontendType;
  cChannel channel;
  const cDiseqc *lastDiseqc;
  const cScr *scr;
+  bool lnbPowerTurnedOn;
  eTunerStatus tunerStatus;
  cMutex mutex;
  cCondVar locked;
@ -279,6 +288,7 @@ private:
  cDvbTuner *bondedTuner;
  bool bondedMaster;
  bool bondedMasterFailed;
+  bool SetFrontendType(const cChannel *Channel);
  cString GetBondingParams(const cChannel *Channel = NULL) const;
  void ClearEventQueue(void) const;
  bool GetFrontendStatus(fe_status_t &Status) const;
@ -287,7 +297,7 @@ private:
  bool SetFrontend(void);
  virtual void Action(void);
 public:
-  cDvbTuner(const cDvbDevice *Device, int Fd_Frontend, int Adapter, int Frontend, fe_delivery_system FrontendType);
+  cDvbTuner(const cDvbDevice *Device, int Fd_Frontend, int Adapter, int Frontend);
  virtual ~cDvbTuner();
  bool Bond(cDvbTuner *Tuner);
  void UnBond(void);
@ -304,25 +314,23 @@ public:

 cMutex cDvbTuner::bondMutex;

-cDvbTuner::cDvbTuner(const cDvbDevice *Device, int Fd_Frontend, int Adapter, int Frontend, fe_delivery_system FrontendType)
+cDvbTuner::cDvbTuner(const cDvbDevice *Device, int Fd_Frontend, int Adapter, int Frontend)
 {
  device = Device;
  fd_frontend = Fd_Frontend;
  adapter = Adapter;
  frontend = Frontend;
-  frontendType = FrontendType;
  subsystemId = cDvbDeviceProbe::GetSubsystemId(adapter, frontend);
  tuneTimeout = 0;
  lockTimeout = 0;
  lastTimeoutReport = 0;
  lastDiseqc = NULL;
  scr = NULL;
+  lnbPowerTurnedOn = false;
  tunerStatus = tsIdle;
  bondedTuner = NULL;
  bondedMaster = false;
  bondedMasterFailed = false;
-  if (frontendType == SYS_DVBS || frontendType == SYS_DVBS2)
-     ResetToneAndVoltage(); // must explicitly turn on LNB power
  SetDescription("tuner on frontend %d/%d", adapter, frontend);
  Start();
 }
@ -346,16 +354,12 @@ bool cDvbTuner::Bond(cDvbTuner *Tuner)
 {
  cMutexLock MutexLock(&bondMutex);
  if (!bondedTuner) {
-     if ((frontendType == SYS_DVBS || frontendType == SYS_DVBS2) && (Tuner->frontendType == SYS_DVBS || Tuner->frontendType == SYS_DVBS2)) {
-        ResetToneAndVoltage();
-        bondedMaster = false; // makes sure we don't disturb an existing master
-        bondedTuner = Tuner->bondedTuner ? Tuner->bondedTuner : Tuner;
-        Tuner->bondedTuner = this;
-        dsyslog("tuner %d/%d bonded with tuner %d/%d", adapter, frontend, bondedTuner->adapter, bondedTuner->frontend);
-        return true;
-        }
-     else
-        esyslog("ERROR: can't bond tuner %d/%d with tuner %d/%d (only DVB-S(2) tuners can be bonded)", adapter, frontend, Tuner->adapter, Tuner->frontend);
+     ResetToneAndVoltage();
+     bondedMaster = false; // makes sure we don't disturb an existing master
+     bondedTuner = Tuner->bondedTuner ? Tuner->bondedTuner : Tuner;
+     Tuner->bondedTuner = this;
+     dsyslog("tuner %d/%d bonded with tuner %d/%d", adapter, frontend, bondedTuner->adapter, bondedTuner->frontend);
+     return true;
     }
  else
     esyslog("ERROR: tuner %d/%d already bonded with tuner %d/%d, can't bond with tuner %d/%d", adapter, frontend, bondedTuner->adapter, bondedTuner->frontend, Tuner->adapter, Tuner->frontend);
@ -634,6 +638,10 @@ static unsigned int FrequencyToHz(unsigned int f)

 void cDvbTuner::ExecuteDiseqc(const cDiseqc *Diseqc, unsigned int *Frequency)
 {
+  if (!lnbPowerTurnedOn) {
+     CHECK(ioctl(fd_frontend, FE_SET_VOLTAGE, SEC_VOLTAGE_13)); // must explicitly turn on LNB power
+     lnbPowerTurnedOn = true;
+     }
  struct dvb_diseqc_master_cmd cmd;
  const char *CurrentAction = NULL;
  for (;;) {
@ -662,6 +670,22 @@ void cDvbTuner::ResetToneAndVoltage(void)
  CHECK(ioctl(fd_frontend, FE_SET_TONE, SEC_TONE_OFF));
 }

+static int GetRequiredDeliverySystem(const cChannel *Channel, const cDvbTransponderParameters *Dtp)
+{
+  int ds = SYS_UNDEFINED;
+  if (Channel->IsAtsc())
+     ds = SYS_ATSC;
+  else if (Channel->IsCable())
+     ds = SYS_DVBC_ANNEX_AC;
+  else if (Channel->IsSat())
+     ds = Dtp->System() == DVB_SYSTEM_1 ? SYS_DVBS : SYS_DVBS2;
+  else if (Channel->IsTerr())
+     ds = Dtp->System() == DVB_SYSTEM_1 ? SYS_DVBT : SYS_DVBT2;
+  else
+     esyslog("ERROR: can't determine frontend type for channel %d", Channel->Number());
+  return ds;
+}
+
 bool cDvbTuner::SetFrontend(void)
 {
 #define MAXFRONTENDCMDS 16
@ -686,6 +710,12 @@ bool cDvbTuner::SetFrontend(void)

  cDvbTransponderParameters dtp(channel.Parameters());

+  // Determine the required frontend type:
+  int frontendType = GetRequiredDeliverySystem(&channel, &dtp);
+  if (frontendType == SYS_UNDEFINED)
+     return false;
+
+  SETCMD(DTV_DELIVERY_SYSTEM, frontendType);
  if (frontendType == SYS_DVBS || frontendType == SYS_DVBS2) {
     unsigned int frequency = channel.Frequency();
     if (Setup.DiSEqC) {
@ -728,22 +758,15 @@ bool cDvbTuner::SetFrontend(void)
     frequency = abs(frequency); // Allow for C-band, where the frequency is less than the LOF

     // DVB-S/DVB-S2 (common parts)
-     SETCMD(DTV_DELIVERY_SYSTEM, dtp.System());
     SETCMD(DTV_FREQUENCY, frequency * 1000UL);
     SETCMD(DTV_MODULATION, dtp.Modulation());
     SETCMD(DTV_SYMBOL_RATE, channel.Srate() * 1000UL);
     SETCMD(DTV_INNER_FEC, dtp.CoderateH());
     SETCMD(DTV_INVERSION, dtp.Inversion());
-     if (dtp.System() == SYS_DVBS2) {
-        if (frontendType == SYS_DVBS2) {
-           // DVB-S2
-           SETCMD(DTV_PILOT, PILOT_AUTO);
-           SETCMD(DTV_ROLLOFF, dtp.RollOff());
-           }
-        else {
-           esyslog("ERROR: frontend %d/%d doesn't provide DVB-S2", adapter, frontend);
-           return false;
-           }
+     if (frontendType == SYS_DVBS2) {
+        // DVB-S2
+        SETCMD(DTV_PILOT, PILOT_AUTO);
+        SETCMD(DTV_ROLLOFF, dtp.RollOff());
        }
     else {
        // DVB-S
@ -755,7 +778,6 @@ bool cDvbTuner::SetFrontend(void)
     }
  else if (frontendType == SYS_DVBC_ANNEX_AC || frontendType == SYS_DVBC_ANNEX_B) {
     // DVB-C
-     SETCMD(DTV_DELIVERY_SYSTEM, frontendType);
     SETCMD(DTV_FREQUENCY, FrequencyToHz(channel.Frequency()));
     SETCMD(DTV_INVERSION, dtp.Inversion());
     SETCMD(DTV_SYMBOL_RATE, channel.Srate() * 1000UL);
@ -767,7 +789,6 @@ bool cDvbTuner::SetFrontend(void)
     }
  else if (frontendType == SYS_DVBT) {
     // DVB-T
-     SETCMD(DTV_DELIVERY_SYSTEM, frontendType);
     SETCMD(DTV_FREQUENCY, FrequencyToHz(channel.Frequency()));
     SETCMD(DTV_INVERSION, dtp.Inversion());
     SETCMD(DTV_BANDWIDTH_HZ, dtp.Bandwidth());
@ -783,7 +804,6 @@ bool cDvbTuner::SetFrontend(void)
     }
  else if (frontendType == SYS_ATSC) {
     // ATSC
-     SETCMD(DTV_DELIVERY_SYSTEM, frontendType);
     SETCMD(DTV_FREQUENCY, FrequencyToHz(channel.Frequency()));
     SETCMD(DTV_INVERSION, dtp.Inversion());
     SETCMD(DTV_MODULATION, dtp.Modulation());
@ -903,6 +923,7 @@ void cDvbSourceParam::GetData(cChannel *Channel)
 cOsdItem *cDvbSourceParam::GetOsdItem(void)
 {
  char type = Source();
+  const tDvbParameterMap *SystemValues = type == 'S' ? SystemValuesSat : SystemValuesTerr;
 #undef ST
 #define ST(s) if (strchr(s, type))
  switch (param++) {
@ -928,7 +949,7 @@ cOsdItem *cDvbSourceParam::GetOsdItem(void)
 int cDvbDevice::setTransferModeForDolbyDigital = 1;
 cMutex cDvbDevice::bondMutex;

-const char *DeliverySystems[] = {
+const char *DeliverySystemNames[] = {
  "UNDEFINED",
  "DVB-C",
  "DVB-C",
@ -945,6 +966,8 @@ const char *DeliverySystems[] = {
  "DMBTH",
  "CMMB",
  "DAB",
+  "DVB-T2",
+  "TURBO",
  NULL
  };

@ -954,8 +977,8 @@ cDvbDevice::cDvbDevice(int Adapter, int Frontend)
  frontend = Frontend;
  ciAdapter = NULL;
  dvbTuner = NULL;
-  frontendType = SYS_UNDEFINED;
-  numProvidedSystems = 0;
+  numDeliverySystems = 0;
+  numModulations = 0;
  bondedDevice = NULL;
  needsDetachBondedReceivers = false;

@ -976,39 +999,8 @@ cDvbDevice::cDvbDevice(int Adapter, int Frontend)
  // We only check the devices that must be present - the others will be checked before accessing them://XXX

  if (fd_frontend >= 0) {
-     if (ioctl(fd_frontend, FE_GET_INFO, &frontendInfo) >= 0) {
-        switch (frontendInfo.type) {
-          case FE_QPSK: frontendType = (frontendInfo.caps & FE_CAN_2G_MODULATION) ? SYS_DVBS2 : SYS_DVBS; break;
-          case FE_OFDM: frontendType = SYS_DVBT; break;
-          case FE_QAM:  frontendType = SYS_DVBC_ANNEX_AC; break;
-          case FE_ATSC: frontendType = SYS_ATSC; break;
-          default: esyslog("ERROR: unknown frontend type %d on frontend %d/%d", frontendInfo.type, adapter, frontend);
-          }
-        }
-     else
-        LOG_ERROR;
-     if (frontendType != SYS_UNDEFINED) {
-        numProvidedSystems++;
-        if (frontendType == SYS_DVBS2)
-           numProvidedSystems++;
-        char Modulations[64];
-        char *p = Modulations;
-        if (frontendInfo.caps & FE_CAN_QPSK)    { numProvidedSystems++; p += sprintf(p, ",%s", MapToUserString(QPSK, ModulationValues)); }
-        if (frontendInfo.caps & FE_CAN_QAM_16)  { numProvidedSystems++; p += sprintf(p, ",%s", MapToUserString(QAM_16, ModulationValues)); }
-        if (frontendInfo.caps & FE_CAN_QAM_32)  { numProvidedSystems++; p += sprintf(p, ",%s", MapToUserString(QAM_32, ModulationValues)); }
-        if (frontendInfo.caps & FE_CAN_QAM_64)  { numProvidedSystems++; p += sprintf(p, ",%s", MapToUserString(QAM_64, ModulationValues)); }
-        if (frontendInfo.caps & FE_CAN_QAM_128) { numProvidedSystems++; p += sprintf(p, ",%s", MapToUserString(QAM_128, ModulationValues)); }
-        if (frontendInfo.caps & FE_CAN_QAM_256) { numProvidedSystems++; p += sprintf(p, ",%s", MapToUserString(QAM_256, ModulationValues)); }
-        if (frontendInfo.caps & FE_CAN_8VSB)    { numProvidedSystems++; p += sprintf(p, ",%s", MapToUserString(VSB_8, ModulationValues)); }
-        if (frontendInfo.caps & FE_CAN_16VSB)   { numProvidedSystems++; p += sprintf(p, ",%s", MapToUserString(VSB_16, ModulationValues)); }
-        if (frontendInfo.caps & FE_CAN_TURBO_FEC){numProvidedSystems++; p += sprintf(p, ",%s", "TURBO_FEC"); }
-        if (p != Modulations)
-           p = Modulations + 1; // skips first ','
-        else
-           p = (char *)"unknown modulations";
-        isyslog("frontend %d/%d provides %s with %s (\"%s\")", adapter, frontend, DeliverySystems[frontendType], p, frontendInfo.name);
-        dvbTuner = new cDvbTuner(this, fd_frontend, adapter, frontend, frontendType);
-        }
+     if (QueryDeliverySystems(fd_frontend))
+        dvbTuner = new cDvbTuner(this, fd_frontend, adapter, frontend);
     }
  else
     esyslog("ERROR: can't open DVB device %d/%d", adapter, frontend);
@ -1106,6 +1098,71 @@ LastAdapter:
  return Found > 0;
 }

+bool cDvbDevice::QueryDeliverySystems(int fd_frontend)
+{
+  numDeliverySystems = 0;
+  if (ioctl(fd_frontend, FE_GET_INFO, &frontendInfo) < 0) {
+     LOG_ERROR;
+     return false;
+     }
+#if DVB_API_VERSION > 5 || DVB_API_VERSION_MINOR >= 5
+  dtv_property Frontend[1];
+  memset(&Frontend, 0, sizeof(Frontend));
+  dtv_properties CmdSeq;
+  memset(&CmdSeq, 0, sizeof(CmdSeq));
+  CmdSeq.props = Frontend;
+  SETCMD(DTV_ENUM_DELSYS, 0);
+  int Result = ioctl(fd_frontend, FE_GET_PROPERTY, &CmdSeq);
+  if (Result == 0) {
+     for (uint i = 0; i < Frontend[0].u.buffer.len; i++) {
+         if (numDeliverySystems >= MAXDELIVERYSYSTEMS) {
+            esyslog("ERROR: too many delivery systems on frontend %d/%d", adapter, frontend);
+            break;
+            }
+         deliverySystems[numDeliverySystems++] = Frontend[0].u.buffer.data[i];
+         }
+     }
+  else {
+     esyslog("ERROR: can't query delivery systems on frontend %d/%d - falling back to legacy mode", adapter, frontend);
+#else
+     {
+#endif
+     // Legacy mode (DVB-API < 5.5):
+     switch (frontendInfo.type) {
+       case FE_QPSK: deliverySystems[numDeliverySystems++] = SYS_DVBS;
+                     if (frontendInfo.caps & FE_CAN_2G_MODULATION)
+                        deliverySystems[numDeliverySystems++] = SYS_DVBS2;
+                     break;
+       case FE_OFDM: deliverySystems[numDeliverySystems++] = SYS_DVBT; break;
+       case FE_QAM:  deliverySystems[numDeliverySystems++] = SYS_DVBC_ANNEX_AC; break;
+       case FE_ATSC: deliverySystems[numDeliverySystems++] = SYS_ATSC; break;
+       default: esyslog("ERROR: unknown frontend type %d on frontend %d/%d", frontendInfo.type, adapter, frontend);
+       }
+     }
+  if (numDeliverySystems > 0) {
+     cString ds("");
+     for (int i = 0; i < numDeliverySystems; i++)
+         ds = cString::sprintf("%s%s%s", *ds, i ? "," : "", DeliverySystemNames[deliverySystems[i]]);
+     cString ms("");
+     if (frontendInfo.caps & FE_CAN_QPSK)      { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QPSK, ModulationValues)); }
+     if (frontendInfo.caps & FE_CAN_QAM_16)    { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QAM_16, ModulationValues)); }
+     if (frontendInfo.caps & FE_CAN_QAM_32)    { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QAM_32, ModulationValues)); }
+     if (frontendInfo.caps & FE_CAN_QAM_64)    { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QAM_64, ModulationValues)); }
+     if (frontendInfo.caps & FE_CAN_QAM_128)   { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QAM_128, ModulationValues)); }
+     if (frontendInfo.caps & FE_CAN_QAM_256)   { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(QAM_256, ModulationValues)); }
+     if (frontendInfo.caps & FE_CAN_8VSB)      { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(VSB_8, ModulationValues)); }
+     if (frontendInfo.caps & FE_CAN_16VSB)     { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", MapToUserString(VSB_16, ModulationValues)); }
+     if (frontendInfo.caps & FE_CAN_TURBO_FEC) { numModulations++; ms = cString::sprintf("%s%s%s", *ms, **ms ? "," : "", "TURBO_FEC"); }
+     if (!**ms)
+        ms = "unknown modulations";
+     isyslog("frontend %d/%d provides %s with %s (\"%s\")", adapter, frontend, *ds, *ms, frontendInfo.name);
+     return true;
+     }
+  else
+     esyslog("ERROR: frontend %d/%d doesn't provide any delivery systems", adapter, frontend);
+  return false;
+}
+
 bool cDvbDevice::Ready(void)
 {
  if (ciAdapter)
@ -1167,7 +1224,7 @@ bool cDvbDevice::Bond(cDvbDevice *Device)
  cMutexLock MutexLock(&bondMutex);
  if (!bondedDevice) {
     if (Device != this) {
-        if ((frontendType == SYS_DVBS || frontendType == SYS_DVBS2) && (Device->frontendType == SYS_DVBS || Device->frontendType == SYS_DVBS2)) {
+        if ((ProvidesDeliverySystem(SYS_DVBS) || ProvidesDeliverySystem(SYS_DVBS2)) && (Device->ProvidesDeliverySystem(SYS_DVBS) || Device->ProvidesDeliverySystem(SYS_DVBS2))) {
           if (dvbTuner && Device->dvbTuner && dvbTuner->Bond(Device->dvbTuner)) {
              bondedDevice = Device->bondedDevice ? Device->bondedDevice : Device;
              Device->bondedDevice = this;
@ -1285,14 +1342,23 @@ void cDvbDevice::CloseFilter(int Handle)
  close(Handle);
 }

+bool cDvbDevice::ProvidesDeliverySystem(int DeliverySystem) const
+{
+  for (int i = 0; i < numDeliverySystems; i++) {
+      if (deliverySystems[i] == DeliverySystem)
+         return true;
+      }
+  return false;
+}
+
 bool cDvbDevice::ProvidesSource(int Source) const
 {
  int type = Source & cSource::st_Mask;
  return type == cSource::stNone
-      || type == cSource::stAtsc  && (frontendType == SYS_ATSC)
-      || type == cSource::stCable && (frontendType == SYS_DVBC_ANNEX_AC || frontendType == SYS_DVBC_ANNEX_B)
-      || type == cSource::stSat   && (frontendType == SYS_DVBS || frontendType == SYS_DVBS2)
-      || type == cSource::stTerr  && (frontendType == SYS_DVBT);
+      || type == cSource::stAtsc  && ProvidesDeliverySystem(SYS_ATSC)
+      || type == cSource::stCable && (ProvidesDeliverySystem(SYS_DVBC_ANNEX_AC) || ProvidesDeliverySystem(SYS_DVBC_ANNEX_B))
+      || type == cSource::stSat   && (ProvidesDeliverySystem(SYS_DVBS) || ProvidesDeliverySystem(SYS_DVBS2))
+      || type == cSource::stTerr  && ProvidesDeliverySystem(SYS_DVBT);
 }

 bool cDvbDevice::ProvidesTransponder(const cChannel *Channel) const
@ -1300,7 +1366,7 @@ bool cDvbDevice::ProvidesTransponder(const cChannel *Channel) const
  if (!ProvidesSource(Channel->Source()))
     return false; // doesn't provide source
  cDvbTransponderParameters dtp(Channel->Parameters());
-  if (dtp.System() == SYS_DVBS2 && frontendType == SYS_DVBS ||
+  if (!ProvidesDeliverySystem(GetRequiredDeliverySystem(Channel, &dtp)) ||
     dtp.Modulation() == QPSK     && !(frontendInfo.caps & FE_CAN_QPSK) ||
     dtp.Modulation() == QAM_16   && !(frontendInfo.caps & FE_CAN_QAM_16) ||
     dtp.Modulation() == QAM_32   && !(frontendInfo.caps & FE_CAN_QAM_32) ||
@ -1375,7 +1441,7 @@ bool cDvbDevice::ProvidesEIT(void) const

 int cDvbDevice::NumProvidedSystems(void) const
 {
-  return numProvidedSystems;
+  return numDeliverySystems + numModulations;
 }

 int cDvbDevice::SignalStrength(void) const
--- a/dvbdevice.h
+++ b/dvbdevice.h
@ -4,13 +4,12 @@
 * See the main source file 'vdr.c' for copyright information and
 * how to reach the author.
 *
- * $Id: dvbdevice.h 2.18 2011/12/04 13:38:17 kls Exp $
+ * $Id: dvbdevice.h 2.19 2012/01/06 13:29:46 kls Exp $
 */

 #ifndef __DVBDEVICE_H
 #define __DVBDEVICE_H

-#include <sys/mman.h> // FIXME: workaround for broken linux-dvb header files
 #include <linux/dvb/frontend.h>
 #include <linux/dvb/version.h>
 #include "device.h"
@ -20,6 +19,7 @@
 #endif

 #define MAXDVBDEVICES  8
+#define MAXDELIVERYSYSTEMS 8

 #define DEV_VIDEO         "/dev/video"
 #define DEV_DVB_ADAPTER   "/dev/dvb/adapter"
@ -47,7 +47,8 @@ extern const tDvbParameterMap InversionValues[];
 extern const tDvbParameterMap BandwidthValues[];
 extern const tDvbParameterMap CoderateValues[];
 extern const tDvbParameterMap ModulationValues[];
-extern const tDvbParameterMap SystemValues[];
+extern const tDvbParameterMap SystemValuesSat[];
+extern const tDvbParameterMap SystemValuesTerr[];
 extern const tDvbParameterMap TransmissionValues[];
 extern const tDvbParameterMap GuardValues[];
 extern const tDvbParameterMap HierarchyValues[];
@ -119,12 +120,14 @@ protected:
  int adapter, frontend;
 private:
  dvb_frontend_info frontendInfo;
-  int numProvidedSystems;
-  fe_delivery_system frontendType;
+  int deliverySystems[MAXDELIVERYSYSTEMS];
+  int numDeliverySystems;
+  int numModulations;
  int fd_dvr, fd_ca;
  static cMutex bondMutex;
  cDvbDevice *bondedDevice;
  mutable bool needsDetachBondedReceivers;
+  bool QueryDeliverySystems(int fd_frontend);
 public:
  cDvbDevice(int Adapter, int Frontend);
  virtual ~cDvbDevice();
@ -167,6 +170,7 @@ private:
 private:
  cDvbTuner *dvbTuner;
 public:
+  virtual bool ProvidesDeliverySystem(int DeliverySystem) const;
  virtual bool ProvidesSource(int Source) const;
  virtual bool ProvidesTransponder(const cChannel *Channel) const;
  virtual bool ProvidesChannel(const cChannel *Channel, int Priority = -1, bool *NeedsDetachReceivers = NULL) const;
--- 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 2.6 2011/08/12 14:27:31 kls Exp $
+ * $Id: nit.c 2.7 2012/01/06 12:45:39 kls Exp $
 */

 #include "nit.h"
@ -16,6 +16,9 @@
 #include "libsi/descriptor.h"
 #include "tools.h"

+#define DVB_SYSTEM_1 0 // see also dvbdevice.c
+#define DVB_SYSTEM_2 1
+
 cNitFilter::cNitFilter(void)
 {
  numNits = 0;
@ -134,7 +137,7 @@ void cNitFilter::Process(u_short Pid, u_char Tid, const u_char *Data, int Length
                 dtp.SetCoderateH(CodeRates[sd->getFecInner()]);
                 static int Modulations[] = { QAM_AUTO, QPSK, PSK_8, QAM_16 };
                 dtp.SetModulation(Modulations[sd->getModulationType()]);
-                 dtp.SetSystem(sd->getModulationSystem() ? SYS_DVBS2 : SYS_DVBS);
+                 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;