start on device list, don't crash when list is empty

[enigma2.git] / lib / dvb / scan.cpp

diff --git a/lib/dvb/scan.cpp b/lib/dvb/scan.cpp
index 8aa41dfadfa012f1ec596ab1cc3a828451baf0ac..8b895dc9f8a42a59ea959604e162a033bb2f0a30 100644 (file)
--- a/lib/dvb/scan.cpp
+++ b/lib/dvb/scan.cpp
@@ -283,14 +283,33 @@ void eDVBScan::addChannelToScan(const eDVBChannelID &chid, iDVBFrontendParameter
        }
        }
 
+       int found_count=0;
                /* ... in the list of channels to scan */
-       for (std::list<ePtr<iDVBFrontendParameters> >::iterator i(m_ch_toScan.begin()); i != m_ch_toScan.end(); ++i)
+       for (std::list<ePtr<iDVBFrontendParameters> >::iterator i(m_ch_toScan.begin()); i != m_ch_toScan.end();)
+       {
                if (sameChannel(*i, feparm))
                {
-                       *i = feparm;  // update
-                       eDebug("update");
-                       return;
+                       if (!found_count)
+                       {
+                               *i = feparm;  // update
+                               eDebug("update");
+                       }
+                       else
+                       {
+                               eDebug("remove dupe");
+                               m_ch_toScan.erase(i++);
+                               continue;
+                       }
+                       ++found_count;
                }
+               ++i;
+       }
+
+       if (found_count > 0)
+       {
+               eDebug("already in todo list");
+               return;
+       }
 
                /* ... in the list of successfully scanned channels */
        for (std::list<ePtr<iDVBFrontendParameters> >::const_iterator i(m_ch_scanned.begin()); i != m_ch_scanned.end(); ++i)
@@ -356,7 +375,14 @@ void eDVBScan::channelDone()
        
        if (m_ready & validNIT)
        {
+               int system;
+               m_ch_current->getSystem(system);
                SCAN_eDebug("dumping NIT");
+               if (m_flags & clearToScanOnFirstNIT)
+               {
+                       m_ch_toScan.clear();
+                       m_flags &= ~clearToScanOnFirstNIT;
+               }
                std::vector<NetworkInformationSection*>::const_iterator i;
                for (i = m_NIT->getSections().begin(); i != m_NIT->getSections().end(); ++i)
                {
@@ -378,6 +404,8 @@ void eDVBScan::channelDone()
                                        {
                                        case CABLE_DELIVERY_SYSTEM_DESCRIPTOR:
                                        {
+                                               if (system != iDVBFrontend::feCable)
+                                                       break; // when current locked transponder is no cable transponder ignore this descriptor
                                                CableDeliverySystemDescriptor &d = (CableDeliverySystemDescriptor&)**desc;
                                                ePtr<eDVBFrontendParameters> feparm = new eDVBFrontendParameters;
                                                eDVBFrontendParametersCable cable;
@@ -395,6 +423,8 @@ void eDVBScan::channelDone()
                                        }
                                        case TERRESTRIAL_DELIVERY_SYSTEM_DESCRIPTOR:
                                        {
+                                               if (system != iDVBFrontend::feTerrestrial)
+                                                       break; // when current locked transponder is no terrestrial transponder ignore this descriptor
                                                TerrestrialDeliverySystemDescriptor &d = (TerrestrialDeliverySystemDescriptor&)**desc;
                                                ePtr<eDVBFrontendParameters> feparm = new eDVBFrontendParameters;
                                                eDVBFrontendParametersTerrestrial terr;
@@ -412,6 +442,9 @@ void eDVBScan::channelDone()
                                        }
                                        case SATELLITE_DELIVERY_SYSTEM_DESCRIPTOR:
                                        {
+                                               if (system != iDVBFrontend::feSatellite)
+                                                       break; // when current locked transponder is no satellite transponder ignore this descriptor
+
                                                SatelliteDeliverySystemDescriptor &d = (SatelliteDeliverySystemDescriptor&)**desc;
                                                if (d.getFrequency() < 10000)
                                                        break;
@@ -475,9 +508,23 @@ void eDVBScan::channelDone()
        if (!m_chid_current)
                eWarning("SCAN: the current channel's ID was not corrected - not adding channel.");
        else
+       {
                addKnownGoodChannel(m_chid_current, m_ch_current);
        
-       m_ch_scanned.push_back(m_ch_current);
+               m_ch_scanned.push_back(m_ch_current);
+
+               for (std::list<ePtr<iDVBFrontendParameters> >::iterator i(m_ch_toScan.begin()); i != m_ch_toScan.end();)
+               {
+                       if (sameChannel(*i, m_ch_current))
+                       {
+                               eDebug("remove dupe 2");
+                               m_ch_toScan.erase(i++);
+                               continue;
+                       }
+                       ++i;
+               }
+       }
+
        nextChannel();
 }
 
@@ -496,7 +543,7 @@ void eDVBScan::start(const eSmartPtrList<iDVBFrontendParameters> &known_transpon
                bool exist=false;
                for (std::list<ePtr<iDVBFrontendParameters> >::const_iterator ii(m_ch_toScan.begin()); ii != m_ch_toScan.end(); ++ii)
                {
-                       if (sameChannel(*i, *ii))
+                       if (sameChannel(*i, *ii, true))
                        {
                                exist=true;
                                break;