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

4 files changed, 165 insertions, 88 deletions

diff --git a/HISTORY b/HISTORY
index 7b8b197c..f646d2ff 100644
--- a/HISTORY
+++ b/HISTORY
@@ -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.
diff --git a/dvbdevice.c b/dvbdevice.c
index d69a1340..c93328f5 100644
--- 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
diff --git a/dvbdevice.h b/dvbdevice.h
index 2072ab20..eb1054d0 100644
--- 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;
diff --git a/nit.c b/nit.c
index 0603e249..e9e91fe4 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 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;