Example #1
0
        /// <summary>
        /// Enumerate all tvcard devices and add them to the list
        /// </summary>
        private void DetectCards()
        {
            ITunerCap _providerType;
            bool      genericNP = false;

            //SkyStar 2 & IP Streaming
            DsDevice[] devices = DsDevice.GetDevicesOfCat(FilterCategory.LegacyAmFilterCategory);
            for (int i = 0; i < devices.Length; ++i)
            {
                if (String.Compare(devices[i].Name, "B2C2 MPEG-2 Source", true) == 0)
                {
                    Log.Log.WriteFile("Detected SkyStar 2 card");
                    TvCardDvbSS2 card = new TvCardDvbSS2(_epgEvents, devices[i]);
                    _cards.Add(card);
                    //break;  maybe more than one B2C2 card ?
                }
                else if (String.Compare(devices[i].Name, "Elecard NWSource-Plus", true) == 0)
                {
                    TvBusinessLayer layer = new TvBusinessLayer();
                    Setting         setting;
                    setting = layer.GetSetting("iptvCardCount", "1");
                    int iptvCardCount = Convert.ToInt32(setting.Value);
                    for (int cardNum = 0; cardNum < iptvCardCount; cardNum++)
                    {
                        Log.Log.WriteFile("Detected IP TV Card " + cardNum);
                        TvCardDVBIP card = new TvCardDVBIPElecard(_epgEvents, devices[i], cardNum);
                        _cards.Add(card);
                    }
                }
                else if (String.Compare(devices[i].Name, "MediaPortal IPTV Source Filter", true) == 0)
                {
                    TvBusinessLayer layer = new TvBusinessLayer();
                    Setting         setting;
                    setting = layer.GetSetting("iptvCardCount", "1");
                    int iptvCardCount = Convert.ToInt32(setting.Value);
                    for (int cardNum = 0; cardNum < iptvCardCount; cardNum++)
                    {
                        Log.Log.WriteFile("Detected IP TV Card " + cardNum);
                        TvCardDVBIP card = new TvCardDVBIPBuiltIn(_epgEvents, devices[i], cardNum);
                        _cards.Add(card);
                    }
                }
            }
            //Hauppauge HD PVR & Colossus
            devices = DsDevice.GetDevicesOfCat(FilterCategory.AMKSCrossbar);
            for (int i = 0; i < devices.Length; ++i)
            {
                if (devices[i].Name == null)
                {
                    continue;
                }
                if (devices[i].Name.Equals("Hauppauge HD PVR Crossbar"))
                {
                    Log.Log.WriteFile("Detected Hauppauge HD PVR");
                    TvCardHDPVR card = new TvCardHDPVR(devices[i]);
                    _cards.Add(card);
                }
                else if (devices[i].Name.Contains("Hauppauge Colossus Crossbar"))
                {
                    Log.Log.WriteFile("Detected Hauppauge Colossus");
                    TvCardHDPVR card = new TvCardHDPVR(devices[i]);
                    _cards.Add(card);
                }
            }
            //BDA TV devices
            devices = DsDevice.GetDevicesOfCat(FilterCategory.BDASourceFiltersCategory);
            if (devices.Length > 0)
            {
                IFilterGraph2 graphBuilder = (IFilterGraph2) new FilterGraph();
                DsROTEntry    rotEntry     = new DsROTEntry(graphBuilder);

                Guid networkProviderClsId = new Guid("{D7D42E5C-EB36-4aad-933B-B4C419429C98}");
                if (FilterGraphTools.IsThisComObjectInstalled(networkProviderClsId))
                {
                    handleInternalNetworkProviderFilter(devices, graphBuilder, networkProviderClsId, rotEntry);
                }
                else
                {
                    ITuningSpace tuningSpace = null;
                    ILocator     locator     = null;

                    //DVBT
                    IBaseFilter networkDVBT = null;
                    try
                    {
                        networkProviderClsId = typeof(DVBTNetworkProvider).GUID;
                        networkDVBT          = FilterGraphTools.AddFilterFromClsid(graphBuilder, networkProviderClsId,
                                                                                   "DVBT Network Provider");
                        tuningSpace = (ITuningSpace) new DVBTuningSpace();
                        tuningSpace.put_UniqueName("DVBT TuningSpace");
                        tuningSpace.put_FriendlyName("DVBT TuningSpace");
                        tuningSpace.put__NetworkType(typeof(DVBTNetworkProvider).GUID);
                        ((IDVBTuningSpace)tuningSpace).put_SystemType(DVBSystemType.Terrestrial);
                        locator = (ILocator) new DVBTLocator();
                        locator.put_CarrierFrequency(-1);
                        locator.put_InnerFEC(FECMethod.MethodNotSet);
                        locator.put_InnerFECRate(BinaryConvolutionCodeRate.RateNotSet);
                        locator.put_Modulation(ModulationType.ModNotSet);
                        locator.put_OuterFEC(FECMethod.MethodNotSet);
                        locator.put_OuterFECRate(BinaryConvolutionCodeRate.RateNotSet);
                        locator.put_SymbolRate(-1);
                        tuningSpace.put_DefaultLocator(locator);
                        ((ITuner)networkDVBT).put_TuningSpace(tuningSpace);
                    }
                    catch (Exception ex)
                    {
                        Log.Log.Error("DVBT card detection error: {0}", ex.ToString());
                    }

                    //DVBS
                    networkProviderClsId = typeof(DVBSNetworkProvider).GUID;
                    IBaseFilter networkDVBS = FilterGraphTools.AddFilterFromClsid(graphBuilder, networkProviderClsId,
                                                                                  "DVBS Network Provider");
                    tuningSpace = (ITuningSpace) new DVBSTuningSpace();
                    tuningSpace.put_UniqueName("DVBS TuningSpace");
                    tuningSpace.put_FriendlyName("DVBS TuningSpace");
                    tuningSpace.put__NetworkType(typeof(DVBSNetworkProvider).GUID);
                    ((IDVBSTuningSpace)tuningSpace).put_SystemType(DVBSystemType.Satellite);
                    locator = (ILocator) new DVBTLocator();
                    locator.put_CarrierFrequency(-1);
                    locator.put_InnerFEC(FECMethod.MethodNotSet);
                    locator.put_InnerFECRate(BinaryConvolutionCodeRate.RateNotSet);
                    locator.put_Modulation(ModulationType.ModNotSet);
                    locator.put_OuterFEC(FECMethod.MethodNotSet);
                    locator.put_OuterFECRate(BinaryConvolutionCodeRate.RateNotSet);
                    locator.put_SymbolRate(-1);
                    tuningSpace.put_DefaultLocator(locator);
                    ((ITuner)networkDVBS).put_TuningSpace(tuningSpace);

                    //ATSC
                    networkProviderClsId = typeof(ATSCNetworkProvider).GUID;
                    IBaseFilter networkATSC = FilterGraphTools.AddFilterFromClsid(graphBuilder, networkProviderClsId,
                                                                                  "ATSC Network Provider");
                    tuningSpace = (ITuningSpace) new ATSCTuningSpace();
                    tuningSpace.put_UniqueName("ATSC TuningSpace");
                    tuningSpace.put_FriendlyName("ATSC TuningSpace");
                    ((IATSCTuningSpace)tuningSpace).put_MaxChannel(10000);
                    ((IATSCTuningSpace)tuningSpace).put_MaxMinorChannel(10000);
                    ((IATSCTuningSpace)tuningSpace).put_MinChannel(0);
                    ((IATSCTuningSpace)tuningSpace).put_MinMinorChannel(0);
                    ((IATSCTuningSpace)tuningSpace).put_MinPhysicalChannel(0);
                    ((IATSCTuningSpace)tuningSpace).put_InputType(TunerInputType.Antenna);
                    locator = (IATSCLocator) new ATSCLocator();
                    locator.put_CarrierFrequency(-1);
                    locator.put_InnerFEC(FECMethod.MethodNotSet);
                    locator.put_InnerFECRate(BinaryConvolutionCodeRate.RateNotSet);
                    locator.put_Modulation(ModulationType.ModNotSet);
                    locator.put_OuterFEC(FECMethod.MethodNotSet);
                    locator.put_OuterFECRate(BinaryConvolutionCodeRate.RateNotSet);
                    locator.put_SymbolRate(-1);
                    locator.put_CarrierFrequency(-1);
                    ((IATSCLocator)locator).put_PhysicalChannel(-1);
                    ((IATSCLocator)locator).put_TSID(-1);
                    tuningSpace.put_DefaultLocator(locator);
                    ((ITuner)networkATSC).put_TuningSpace(tuningSpace);

                    //DVBC
                    networkProviderClsId = typeof(DVBCNetworkProvider).GUID;
                    IBaseFilter networkDVBC = FilterGraphTools.AddFilterFromClsid(graphBuilder, networkProviderClsId,
                                                                                  "DVBC Network Provider");
                    tuningSpace = (ITuningSpace) new DVBTuningSpace();
                    tuningSpace.put_UniqueName("DVBC TuningSpace");
                    tuningSpace.put_FriendlyName("DVBC TuningSpace");
                    tuningSpace.put__NetworkType(typeof(DVBCNetworkProvider).GUID);
                    ((IDVBTuningSpace)tuningSpace).put_SystemType(DVBSystemType.Cable);
                    locator = (ILocator) new DVBCLocator();
                    locator.put_CarrierFrequency(-1);
                    locator.put_InnerFEC(FECMethod.MethodNotSet);
                    locator.put_InnerFECRate(BinaryConvolutionCodeRate.RateNotSet);
                    locator.put_Modulation(ModulationType.ModNotSet);
                    locator.put_OuterFEC(FECMethod.MethodNotSet);
                    locator.put_OuterFECRate(BinaryConvolutionCodeRate.RateNotSet);
                    locator.put_SymbolRate(-1);
                    tuningSpace.put_DefaultLocator(locator);
                    ((ITuner)networkDVBC).put_TuningSpace(tuningSpace);

                    //MS Network Provider - MCE Roll-up 2 or better
                    networkProviderClsId = typeof(NetworkProvider).GUID;
                    // First test if the Generic Network Provider is available (only on MCE 2005 + Update Rollup 2)
                    if (FilterGraphTools.IsThisComObjectInstalled(networkProviderClsId))
                    {
                        genericNP = true;
                    }
                    for (int i = 0; i < devices.Length; i++)
                    {
                        bool   connected        = false;
                        bool   isCablePreferred = false;
                        string name             = devices[i].Name ?? "unknown";
                        name = name.ToLowerInvariant();
                        Log.Log.WriteFile("Found card:{0}", name);
                        //silicondust work-around for dvb type detection issue. generic provider would always use dvb-t
                        if (name.Contains("silicondust hdhomerun tuner"))
                        {
                            isCablePreferred = CheckHDHomerunCablePrefered(name);
                            Log.Log.WriteFile("silicondust hdhomerun detected - prefer cable mode: {0}", isCablePreferred);
                        }
                        IBaseFilter tmp;
                        try
                        {
                            graphBuilder.AddSourceFilterForMoniker(devices[i].Mon, null, name, out tmp);
                        }
                        catch (InvalidComObjectException)
                        {
                            //ignore bad card
                            Log.Log.WriteFile("cannot add filter {0} to graph", devices[i].Name);
                            continue;
                        }
                        //Use the Microsoft Network Provider method first but only if available
                        if (genericNP)
                        {
                            IBaseFilter networkDVB = FilterGraphTools.AddFilterFromClsid(graphBuilder, networkProviderClsId,
                                                                                         "Microsoft Network Provider");
                            if (ConnectFilter(graphBuilder, networkDVB, tmp))
                            {
                                Log.Log.WriteFile("Detected DVB card:{0}", name);
                                // determine the DVB card supported GUIDs here!
                                _providerType = networkDVB as ITunerCap;
                                int    ulcNetworkTypesMax = 5;
                                int    pulcNetworkTypes;
                                Guid[] pguidNetworkTypes = new Guid[ulcNetworkTypesMax];
                                int    hr = _providerType.get_SupportedNetworkTypes(ulcNetworkTypesMax, out pulcNetworkTypes,
                                                                                    pguidNetworkTypes);
                                for (int n = 0; n < pulcNetworkTypes; n++)
                                {
                                    Log.Log.Debug("Detecting type by MSNP {0}: {1}", n, pguidNetworkTypes[n]);
                                    //test the first found guid to determine the DVB card type
                                    if (pguidNetworkTypes[n] == (typeof(DVBTNetworkProvider).GUID) && !isCablePreferred)
                                    {
                                        Log.Log.WriteFile("Detected DVB-T* card:{0}", name);
                                        TvCardDVBT dvbtCard = new TvCardDVBT(_epgEvents, devices[i]);
                                        _cards.Add(dvbtCard);
                                        connected = true;
                                    }
                                    else if (pguidNetworkTypes[n] == (typeof(DVBSNetworkProvider).GUID) && !isCablePreferred)
                                    {
                                        Log.Log.WriteFile("Detected DVB-S* card:{0}", name);
                                        TvCardDVBS dvbsCard = new TvCardDVBS(_epgEvents, devices[i]);
                                        _cards.Add(dvbsCard);
                                        connected = true;
                                    }
                                    else if (pguidNetworkTypes[n] == (typeof(DVBCNetworkProvider).GUID))
                                    {
                                        Log.Log.WriteFile("Detected DVB-C* card:{0}", name);
                                        TvCardDVBC dvbcCard = new TvCardDVBC(_epgEvents, devices[i]);
                                        _cards.Add(dvbcCard);
                                        connected = true;
                                    }
                                    else if (pguidNetworkTypes[n] == (typeof(ATSCNetworkProvider).GUID))
                                    {
                                        Log.Log.WriteFile("Detected ATSC* card:{0}", name);
                                        TvCardATSC dvbsCard = new TvCardATSC(_epgEvents, devices[i]);
                                        _cards.Add(dvbsCard);
                                        connected = true;
                                    }
                                    if (connected)
                                    {
                                        graphBuilder.RemoveFilter(tmp);
                                        Release.ComObject("tmp filter", tmp);
                                        break; // already found one, no need to continue
                                    }
                                    else if (n == (pulcNetworkTypes - 1))
                                    {
                                        Log.Log.WriteFile("Connected with generic MS Network Provider however network types don't match, using the original method");
                                    }
                                }
                            }
                            else
                            {
                                Log.Log.WriteFile("Not connected with generic MS Network Provider, using the original method");
                                connected = false;
                            }
                            graphBuilder.RemoveFilter(networkDVB);
                            Release.ComObject("ms provider", networkDVB);
                        }
                        if (!genericNP || !connected)
                        {
                            if (ConnectFilter(graphBuilder, networkDVBT, tmp))
                            {
                                Log.Log.WriteFile("Detected DVB-T card:{0}", name);
                                TvCardDVBT dvbtCard = new TvCardDVBT(_epgEvents, devices[i]);
                                _cards.Add(dvbtCard);
                            }
                            else if (ConnectFilter(graphBuilder, networkDVBC, tmp))
                            {
                                Log.Log.WriteFile("Detected DVB-C card:{0}", name);
                                TvCardDVBC dvbcCard = new TvCardDVBC(_epgEvents, devices[i]);
                                _cards.Add(dvbcCard);
                            }
                            else if (ConnectFilter(graphBuilder, networkDVBS, tmp))
                            {
                                Log.Log.WriteFile("Detected DVB-S card:{0}", name);
                                TvCardDVBS dvbsCard = new TvCardDVBS(_epgEvents, devices[i]);
                                _cards.Add(dvbsCard);
                            }
                            else if (ConnectFilter(graphBuilder, networkATSC, tmp))
                            {
                                Log.Log.WriteFile("Detected ATSC card:{0}", name);
                                TvCardATSC dvbsCard = new TvCardATSC(_epgEvents, devices[i]);
                                _cards.Add(dvbsCard);
                            }
                            graphBuilder.RemoveFilter(tmp);
                            Release.ComObject("tmp filter", tmp);
                        }
                    }
                    FilterGraphTools.RemoveAllFilters(graphBuilder);
                    Release.ComObject("dvbc provider", networkDVBC);
                    Release.ComObject("atsc provider", networkATSC);
                    Release.ComObject("dvbs provider", networkDVBS);
                    Release.ComObject("dvbt provider", networkDVBT);
                    rotEntry.Dispose();
                    Release.ComObject("graph builder", graphBuilder);
                }
            }
            //Analogue TV devices
            devices = DsDevice.GetDevicesOfCat(FilterCategory.AMKSTVTuner);
            for (int i = 0; i < devices.Length; i++)
            {
                string name = devices[i].Name ?? "unknown";
                name = name.ToLowerInvariant();
                Log.Log.WriteFile("Detected analog card:{0}", name);
                TvCardAnalog analogCard = new TvCardAnalog(devices[i]);
                _cards.Add(analogCard);
            }
            _cards.Add(new RadioWebStreamCard());
        }
Example #2
0
        private void DetectSupportedBdaSourceDevices(ref HashSet <string> previouslyKnownDevices, ref HashSet <string> knownDevices)
        {
            Log.Log.Debug("Detect BDA source devices");

            // MS generic, MCE 2005 roll-up 2 or better
            bool isMsGenericNpAvailable = FilterGraphTools.IsThisComObjectInstalled(typeof(NetworkProvider).GUID);

            DsDevice[] connectedDevices = DsDevice.GetDevicesOfCat(FilterCategory.BDASourceFiltersCategory);
            foreach (DsDevice connectedDevice in connectedDevices)
            {
                string name       = connectedDevice.Name;
                string devicePath = connectedDevice.DevicePath;
                if (string.IsNullOrEmpty(name) || string.IsNullOrEmpty(devicePath))
                {
                    continue;
                }
                if (previouslyKnownDevices.Contains(devicePath))
                {
                    knownDevices.Add(devicePath);
                    continue;
                }

                // North American CableCARD tuners [PBDA].
                if (name.StartsWith("HDHomeRun Prime") || name.StartsWith("Ceton InfiniTV"))
                {
                    Log.Log.Info("Detected new PBDA CableCARD tuner device {0} {1}", name, devicePath);
                    TunerPbdaCableCard cableCardTuner = new TunerPbdaCableCard(connectedDevice);
                    knownDevices.Add(devicePath);
                    _deviceEventListener.OnDeviceAdded(cableCardTuner);
                    continue;
                }

                IBaseFilter tmpDeviceFilter;
                try
                {
                    _graphBuilder.AddSourceFilterForMoniker(connectedDevice.Mon, null, name, out tmpDeviceFilter);
                }
                catch (Exception ex)
                {
                    Log.Log.Error("Failed to add filter to detect device type for {0}!\r\n{1}", name, ex);
                    continue;
                }

                try
                {
                    // Silicondust regular (non-CableCARD) HDHomeRun. Workaround for tuner type
                    // detection issue. The MS generic provider would always detect DVB-T.
                    bool isCablePreferred = false;
                    if (name.StartsWith("Silicondust HDHomeRun Tuner"))
                    {
                        isCablePreferred = GetHdHomeRunSourceType(name).Equals("Digital Cable");
                    }

                    Log.Log.Info("Detected new digital BDA tuner device {0} {1}", name, devicePath);

                    // Try the MediaPortal network provider first.
                    ITVCard deviceToAdd = null;
                    if (_mpNp != null)
                    {
                        Log.Log.Debug("  check type with MP NP");
                        IDvbNetworkProvider interfaceNetworkProvider = (IDvbNetworkProvider)_mpNp;
                        string hash = GetHash(devicePath);
                        interfaceNetworkProvider.ConfigureLogging(GetFileName(devicePath), hash, LogLevelOption.Debug);
                        if (ConnectFilter(_graphBuilder, _mpNp, tmpDeviceFilter))
                        {
                            TuningType tuningTypes;
                            interfaceNetworkProvider.GetAvailableTuningTypes(out tuningTypes);
                            Log.Log.Debug("  tuning types = {0}, hash = {1}", tuningTypes, hash);
                            if ((tuningTypes & TuningType.DvbT) != 0 && !isCablePreferred)
                            {
                                deviceToAdd = new TvCardDVBT(connectedDevice);
                            }
                            else if ((tuningTypes & TuningType.DvbS) != 0 && !isCablePreferred)
                            {
                                deviceToAdd = new TvCardDVBS(connectedDevice);
                            }
                            else if ((tuningTypes & TuningType.DvbC) != 0)
                            {
                                deviceToAdd = new TvCardDVBC(connectedDevice);
                            }
                            else if ((tuningTypes & TuningType.Atsc) != 0)
                            {
                                deviceToAdd = new TvCardATSC(connectedDevice);
                            }
                            else
                            {
                                Log.Log.Debug("  connected to MP NP but type not recognised");
                            }
                        }
                        else
                        {
                            Log.Log.Debug("  failed to connect to MP NP");
                        }
                    }
                    // Try the Microsoft network provider next if the MP NP
                    // failed and the MS generic NP is available.
                    if (deviceToAdd == null && isMsGenericNpAvailable)
                    {
                        // Note: the MS NP must be added/removed to/from the graph for each
                        // device that is checked. If you don't do this, the networkTypes
                        // list gets longer and longer and longer.
                        Log.Log.Debug("  check type with MS NP");
                        IBaseFilter genericNp = null;
                        try
                        {
                            genericNp = FilterGraphTools.AddFilterFromClsid(_graphBuilder, typeof(NetworkProvider).GUID, "Microsoft Network Provider");
                        }
                        catch
                        {
                            genericNp = null;
                        }
                        if (genericNp == null)
                        {
                            Log.Log.Error(" failed to add MS NP to graph");
                        }
                        else
                        {
                            if (ConnectFilter(_graphBuilder, genericNp, tmpDeviceFilter))
                            {
                                int    networkTypesMax = 5;
                                int    networkTypeCount;
                                Guid[] networkTypes = new Guid[networkTypesMax];
                                int    hr           = (genericNp as ITunerCap).get_SupportedNetworkTypes(networkTypesMax, out networkTypeCount, networkTypes);
                                Log.Log.Debug("  network type count = {0}", networkTypeCount);
                                for (int n = 0; n < networkTypeCount; n++)
                                {
                                    Log.Log.Debug("  network type {0} = {1}", n, networkTypes[n]);
                                }
                                for (int n = 0; n < networkTypeCount; n++)
                                {
                                    if (networkTypes[n] == typeof(DVBTNetworkProvider).GUID && !isCablePreferred)
                                    {
                                        deviceToAdd = new TvCardDVBT(connectedDevice);
                                    }
                                    else if (networkTypes[n] == typeof(DVBSNetworkProvider).GUID && !isCablePreferred)
                                    {
                                        deviceToAdd = new TvCardDVBS(connectedDevice);
                                    }
                                    else if (networkTypes[n] == typeof(DVBCNetworkProvider).GUID)
                                    {
                                        deviceToAdd = new TvCardDVBC(connectedDevice);
                                    }
                                    else if (networkTypes[n] == typeof(ATSCNetworkProvider).GUID)
                                    {
                                        deviceToAdd = new TvCardATSC(connectedDevice);
                                    }
                                    if (deviceToAdd != null)
                                    {
                                        break;
                                    }
                                    else if (n == (networkTypeCount - 1))
                                    {
                                        Log.Log.Debug(" connected to MS NP but type not recognised");
                                    }
                                }
                            }
                            else
                            {
                                Log.Log.Debug("  failed to connect to MS NP");
                            }

                            _graphBuilder.RemoveFilter(genericNp);
                            Release.ComObject("device detection generic network provider", genericNp);
                            genericNp = null;
                        }
                    }
                    // Last shot is the old style Microsoft network providers.
                    if (deviceToAdd == null)
                    {
                        Log.Log.Debug("  check type with specific NPs");
                        if (ConnectFilter(_graphBuilder, _dvbtNp, tmpDeviceFilter))
                        {
                            deviceToAdd = new TvCardDVBT(connectedDevice);
                        }
                        else if (ConnectFilter(_graphBuilder, _dvbcNp, tmpDeviceFilter))
                        {
                            deviceToAdd = new TvCardDVBC(connectedDevice);
                        }
                        else if (ConnectFilter(_graphBuilder, _dvbsNp, tmpDeviceFilter))
                        {
                            deviceToAdd = new TvCardDVBS(connectedDevice);
                        }
                        else if (ConnectFilter(_graphBuilder, _atscNp, tmpDeviceFilter))
                        {
                            deviceToAdd = new TvCardATSC(connectedDevice);
                        }
                        else
                        {
                            Log.Log.Debug("  failed to connect to specific NP");
                        }
                    }

                    if (deviceToAdd != null)
                    {
                        Log.Log.Info("  tuner type = {0}", deviceToAdd.CardType);
                        knownDevices.Add(devicePath);
                        _deviceEventListener.OnDeviceAdded(deviceToAdd);
                    }
                }
                finally
                {
                    _graphBuilder.RemoveFilter(tmpDeviceFilter);
                    Release.ComObject("device detection device filter", tmpDeviceFilter);
                }
            }
        }
Example #3
0
        private void handleInternalNetworkProviderFilter(DsDevice[] devices, IFilterGraph2 graphBuilder,
                                                         Guid networkProviderClsId, DsROTEntry rotEntry)
        {
            IDvbNetworkProvider interfaceNetworkProvider;
            TuningType          tuningTypes;

            for (int i = 0; i < devices.Length; i++)
            {
                bool   isCablePreferred = false;
                string name             = devices[i].Name ?? "unknown";
                name = name.ToLowerInvariant();
                Log.Log.WriteFile("Found card:{0}", name);
                //silicondust work-around for dvb type detection issue. generic provider would always use dvb-t
                if (name.Contains("silicondust hdhomerun tuner"))
                {
                    isCablePreferred = CheckHDHomerunCablePrefered(name);
                    Log.Log.WriteFile("silicondust hdhomerun detected - prefer cable mode: {0}", isCablePreferred);
                }
                IBaseFilter tmp;
                graphBuilder.AddSourceFilterForMoniker(devices[i].Mon, null, name, out tmp);
                //Use the Microsoft Network Provider method first but only if available
                IBaseFilter networkDVB = FilterGraphTools.AddFilterFromClsid(graphBuilder, networkProviderClsId,
                                                                             "MediaPortal Network Provider");
                interfaceNetworkProvider = (IDvbNetworkProvider)networkDVB;
                string hash = GetHash(devices[i].DevicePath);
                interfaceNetworkProvider.ConfigureLogging(GetFileName(devices[i].DevicePath), hash, LogLevelOption.Debug);
                if (ConnectFilter(graphBuilder, networkDVB, tmp))
                {
                    Log.Log.WriteFile("Detected DVB card:{0}- Hash: {1}", name, hash);
                    interfaceNetworkProvider.GetAvailableTuningTypes(out tuningTypes);
                    Log.Log.WriteFile("TuningTypes: " + tuningTypes);
                    // determine the DVB card supported GUIDs here!
                    if ((tuningTypes & TuningType.DvbT) != 0 && !isCablePreferred)
                    {
                        Log.Log.WriteFile("Detected DVB-T* card:{0}", name);
                        TvCardDVBT dvbtCard = new TvCardDVBT(_epgEvents, devices[i]);
                        _cards.Add(dvbtCard);
                    }
                    if ((tuningTypes & TuningType.DvbS) != 0 && !isCablePreferred)
                    {
                        Log.Log.WriteFile("Detected DVB-S* card:{0}", name);
                        TvCardDVBS dvbsCard = new TvCardDVBS(_epgEvents, devices[i]);
                        _cards.Add(dvbsCard);
                    }
                    if ((tuningTypes & TuningType.DvbC) != 0)
                    {
                        Log.Log.WriteFile("Detected DVB-C* card:{0}", name);
                        TvCardDVBC dvbcCard = new TvCardDVBC(_epgEvents, devices[i]);
                        _cards.Add(dvbcCard);
                    }
                    if ((tuningTypes & TuningType.Atsc) != 0 && !isCablePreferred)
                    {
                        Log.Log.WriteFile("Detected ATSC* card:{0}", name);
                        TvCardATSC dvbsCard = new TvCardATSC(_epgEvents, devices[i]);
                        _cards.Add(dvbsCard);
                    }
                }
                graphBuilder.RemoveFilter(tmp);
                Release.ComObject("tmp filter", tmp);
                graphBuilder.RemoveFilter(networkDVB);
                Release.ComObject("ms provider", networkDVB);
            }
            FilterGraphTools.RemoveAllFilters(graphBuilder);
            rotEntry.Dispose();
            Release.ComObject("graph builder", graphBuilder);
        }