/// <summary>
/// Creates the Graph instance which represents an analog graph
/// </summary>
/// <param name="xmlNode">The graph xml node</param>
/// <returns>Graph instance</returns>
public static Graph CreateInstance(XmlNode xmlNode)
{
Graph graph = new Graph();
XmlNode tunerNode = null;
XmlNode tvAudioNode = null;
XmlNode crossbarNode = null;
XmlNode captureNode = null;
XmlNode teletextNode = null;
if (xmlNode != null)
{
tunerNode = xmlNode.SelectSingleNode("tuner");
tvAudioNode = xmlNode.SelectSingleNode("tvAudio");
crossbarNode = xmlNode.SelectSingleNode("crossbar");
captureNode = xmlNode.SelectSingleNode("capture");
teletextNode = xmlNode.SelectSingleNode("teletext");
}
graph.Tuner = Tuner.CreateInstance(tunerNode);
graph.TvAudio = TvAudio.CreateInstance(tvAudioNode);
graph.Crossbar = Crossbar.CreateInstance(crossbarNode);
graph.Capture = Capture.CreateInstance(captureNode);
graph.Teletext = Teletext.CreateInstance(teletextNode);
return graph;
}
/// <summary>
/// Detects the capabilities of the tv audio device
/// </summary>
private void CheckCapabilities(Graph graph)
{
TVAudioMode availableAudioModes;
_tvAudioTunerInterface.GetHardwareSupportedTVAudioModes(out availableAudioModes);
graph.TvAudio.AudioModes = availableAudioModes;
if ((availableAudioModes & (TVAudioMode.Stereo)) != 0)
{
AnalogAudioStream stream = new AnalogAudioStream();
stream.AudioMode = TVAudioMode.Stereo;
stream.Language = "Stereo";
streams.Add(stream);
}
if ((availableAudioModes & (TVAudioMode.Mono)) != 0)
{
AnalogAudioStream stream = new AnalogAudioStream();
stream.AudioMode = TVAudioMode.Mono;
stream.Language = "Mono";
streams.Add(stream);
}
if ((availableAudioModes & (TVAudioMode.LangA)) != 0)
{
AnalogAudioStream stream = new AnalogAudioStream();
stream.AudioMode = TVAudioMode.LangA;
stream.Language = "LangA";
streams.Add(stream);
}
if ((availableAudioModes & (TVAudioMode.LangB)) != 0)
{
AnalogAudioStream stream = new AnalogAudioStream();
stream.AudioMode = TVAudioMode.LangB;
stream.Language = "LangB";
streams.Add(stream);
}
if ((availableAudioModes & (TVAudioMode.LangC)) != 0)
{
AnalogAudioStream stream = new AnalogAudioStream();
stream.AudioMode = TVAudioMode.LangC;
stream.Language = "LangC";
streams.Add(stream);
}
}
/// <summary>
/// Creates the filter by trying to detect it
/// </summary>
/// <param name="crossbar">The crossbar componen</param>
/// <param name="tuner">The tuner component</param>
/// <param name="graph">The stored graph</param>
/// <param name="graphBuilder">The graphBuilder</param>
/// <returns>true, if the graph building was successful</returns>
private bool CreateAutomaticFilterInstance(Graph graph, Tuner tuner, Crossbar crossbar, IFilterGraph2 graphBuilder)
{
//get all tv audio tuner devices on this system
DsDevice[] devices = null;
try
{
devices = DsDevice.GetDevicesOfCat(FilterCategory.AMKSTVAudio);
devices = DeviceSorter.Sort(devices, tuner.TunerName, crossbar.CrossBarName);
}
catch (Exception)
{
Log.Log.WriteFile("analog: AddTvAudioFilter no tv audio devices found - Trying TvTuner filter");
}
if (devices != null && devices.Length > 0)
{
// try each tv audio tuner
for (int i = 0; i < devices.Length; i++)
{
IBaseFilter tmp;
Log.Log.WriteFile("analog: AddTvAudioFilter try:{0} {1}", devices[i].Name, i);
//if tv audio tuner is currently in use we can skip it
if (DevicesInUse.Instance.IsUsed(devices[i]))
continue;
int hr;
try
{
//add tv audio tuner to graph
hr = graphBuilder.AddSourceFilterForMoniker(devices[i].Mon, null, devices[i].Name, out tmp);
}
catch (Exception)
{
Log.Log.WriteFile("analog: cannot add filter to graph");
continue;
}
if (hr != 0)
{
//failed to add tv audio tuner to graph, continue with the next one
if (tmp != null)
{
graphBuilder.RemoveFilter(tmp);
Release.ComObject("tvAudioFilter filter", tmp);
}
continue;
}
// try connecting the tv tuner-> tv audio tuner
if (FilterGraphTools.ConnectPin(graphBuilder, tuner.AudioPin, tmp, 0))
{
// Got it !
// Connect tv audio tuner to the crossbar
IPin pin = DsFindPin.ByDirection(tmp, PinDirection.Output, 0);
hr = graphBuilder.Connect(pin, crossbar.AudioTunerIn);
if (hr < 0)
{
//failed
graphBuilder.RemoveFilter(tmp);
Release.ComObject("audiotuner pinin", pin);
Release.ComObject("audiotuner filter", tmp);
}
else
{
//succeeded. we're done
Log.Log.WriteFile("analog: AddTvAudioFilter succeeded:{0}", devices[i].Name);
Release.ComObject("audiotuner pinin", pin);
_filterTvAudioTuner = tmp;
_audioDevice = devices[i];
DevicesInUse.Instance.Add(_audioDevice);
_tvAudioTunerInterface = tuner.Filter as IAMTVAudio;
break;
}
}
else
{
// cannot connect tv tuner-> tv audio tuner, try next one...
graphBuilder.RemoveFilter(tmp);
Release.ComObject("audiotuner filter", tmp);
}
}
}
if (_filterTvAudioTuner == null)
{
Log.Log.WriteFile("analog: AddTvAudioFilter no tv audio devices found - Trying TvTuner filter");
int hr = graphBuilder.Connect(tuner.AudioPin, crossbar.AudioTunerIn);
if (hr != 0)
{
Log.Log.Error("analog: unable to add TvAudioTuner to graph - even TvTuner as TvAudio fails");
mode = TvAudioVariant.Unavailable;
}
else
{
Log.Log.WriteFile("analog: AddTvAudioFilter connected TvTuner with Crossbar directly succeeded!");
mode = TvAudioVariant.TvTunerConnection;
_tvAudioTunerInterface = tuner.Filter as IAMTVAudio;
if (_tvAudioTunerInterface != null)
{
Log.Log.WriteFile("analog: AddTvAudioFilter succeeded - TvTuner is also TvAudio");
_filterTvAudioTuner = tuner.Filter;
mode = TvAudioVariant.TvTuner;
}
}
graph.TvAudio.Mode = mode;
}
else
{
mode = TvAudioVariant.Normal;
graph.TvAudio.Name = _audioDevice.Name;
}
if (mode != TvAudioVariant.Unavailable && mode != TvAudioVariant.TvTunerConnection &&
_tvAudioTunerInterface != null)
{
CheckCapabilities(graph);
}
return true;
}
/// <summary>
/// Adds the tv audio tuner to the graph and connects it to the crossbar.
/// At the end of this method the graph looks like:
/// [ ] ------------------------->[ ]
/// [ tvtuner ] [ crossbar ]
/// [ ]----[ ]-------->[ ]
/// [ tvaudio ]
/// [ tuner ]
/// </summary>
/// <param name="crossbar">The crossbar componen</param>
/// <param name="tuner">The tuner component</param>
/// <param name="graph">The stored graph</param>
/// <param name="graphBuilder">The graphBuilder</param>
/// <returns>true, if the graph building was successful</returns>
public bool CreateFilterInstance(Graph graph, IFilterGraph2 graphBuilder, Tuner tuner, Crossbar crossbar)
{
streams = new List<IAudioStream>();
if (!string.IsNullOrEmpty(graph.TvAudio.Name) && graph.TvAudio.Mode != TvAudioVariant.Unavailable)
{
Log.Log.WriteFile("analog: Using TvAudio configuration from stored graph");
if (CreateConfigurationBasedFilterInstance(graph, tuner, crossbar, graphBuilder))
{
Log.Log.WriteFile("analog: Using TvAudio configuration from stored graph succeeded");
return true;
}
}
if (tuner.AudioPin == null)
{
Log.Log.WriteFile("analog: AddTvAudioFilter no tv audio device needed!");
mode = TvAudioVariant.Unavailable;
return true;
}
Log.Log.WriteFile("analog: No stored graph for TvAudio component - Trying to detect");
return CreateAutomaticFilterInstance(graph, tuner, crossbar, graphBuilder);
}
/// <summary>
/// Creates the filter by trying to detect it
/// </summary>
/// <param name="tuner">The tuner component</param>
/// <param name="graph">The stored graph</param>
/// <param name="graphBuilder">The graphBuilder</param>
/// <returns>true, if the graph building was successful</returns>
private bool CreateAutomaticFilterInstance(Graph graph, IFilterGraph2 graphBuilder, Tuner tuner)
{
_audioTunerIn = null;
DsDevice[] devices;
//get list of all crossbar devices installed on this system
try
{
devices = DsDevice.GetDevicesOfCat(FilterCategory.AMKSCrossbar);
devices = DeviceSorter.Sort(devices, graph.Tuner.Name);
}
catch (Exception)
{
Log.Log.WriteFile("analog: AddCrossBarFilter no crossbar devices found");
return false;
}
if (devices == null || devices.Length == 0)
{
Log.Log.WriteFile("analog: AddCrossBarFilter no crossbar devices found");
return false;
}
//try each crossbar
for (int i = 0; i < devices.Length; i++)
{
IBaseFilter tmp;
Log.Log.WriteFile("analog: AddCrossBarFilter try:{0} {1}", devices[i].Name, i);
//if crossbar is already in use then we can skip it
if (DevicesInUse.Instance.IsUsed(devices[i]))
continue;
int hr;
try
{
//add the crossbar to the graph
hr = graphBuilder.AddSourceFilterForMoniker(devices[i].Mon, null, devices[i].Name, out tmp);
}
catch (Exception)
{
Log.Log.WriteFile("analog: cannot add filter to graph");
continue;
}
if (hr != 0)
{
//failed. try next crossbar
if (tmp != null)
{
graphBuilder.RemoveFilter(tmp);
Release.ComObject("CrossBarFilter", tmp);
}
continue;
}
_crossBarFilter = (IAMCrossbar)tmp;
CheckCapabilities();
if (_videoOutPinIndex == -1)
{
Log.Log.WriteFile("analog: AddCrossbarFilter no video output found");
graphBuilder.RemoveFilter(tmp);
_crossBarFilter = null;
Release.ComObject("CrossBarFilter", tmp);
continue;
}
// Check that the crossbar has a tuner video input pin.
IPin pinIn = null;
if (_videoPinMap.ContainsKey(AnalogChannel.VideoInputType.Tuner))
{
pinIn = DsFindPin.ByDirection(tmp, PinDirection.Input, _videoPinMap[AnalogChannel.VideoInputType.Tuner]);
}
if (pinIn == null)
{
// no pin found, continue with next crossbar
Log.Log.WriteFile("analog: AddCrossBarFilter no video tuner input pin detected");
if (tmp != null)
{
graphBuilder.RemoveFilter(tmp);
_crossBarFilter = null;
Release.ComObject("CrossBarFilter", tmp);
}
continue;
}
//connect tv tuner->crossbar
int tempVideoPinIndex;
if (FilterGraphTools.ConnectFilter(graphBuilder, tuner.Filter, pinIn, out tempVideoPinIndex))
{
// Got it, we're done
_filterCrossBar = tmp;
_crossBarDevice = devices[i];
DevicesInUse.Instance.Add(_crossBarDevice);
if (_audioTunerIn == null)
{
_audioTunerIn = DsFindPin.ByDirection(_filterCrossBar, PinDirection.Input,
_audioPinMap[AnalogChannel.AudioInputType.Tuner]);
}
Release.ComObject("crossbar videotuner pin", pinIn);
_videoOut = DsFindPin.ByDirection(_filterCrossBar, PinDirection.Output, _videoOutPinIndex);
if (_audioOutPinIndex != -1)
{
_audioOut = DsFindPin.ByDirection(_filterCrossBar, PinDirection.Output, _audioOutPinIndex);
}
Log.Log.WriteFile("analog: AddCrossBarFilter succeeded");
graph.Crossbar.AudioOut = _audioOutPinIndex;
graph.Crossbar.AudioPinMap = _audioPinMap;
graph.Crossbar.Name = _crossBarDevice.Name;
graph.Crossbar.VideoOut = _videoOutPinIndex;
graph.Crossbar.VideoPinMap = _videoPinMap;
graph.Crossbar.VideoPinRelatedAudioMap = _videoPinRelatedAudioMap;
graph.Tuner.VideoPin = tempVideoPinIndex;
break;
}
// cannot connect tv tuner to crossbar, try next crossbar device
graphBuilder.RemoveFilter(tmp);
Release.ComObject("crossbar videotuner pin", pinIn);
Release.ComObject("crossbar filter", tmp);
}
return _filterCrossBar != null;
}
/// <summary>
/// Creates the filter based on the configuration file
/// </summary>
/// <param name="tuner">The tuner component</param>
/// <param name="graph">The stored graph</param>
/// <param name="graphBuilder">The graphBuilder</param>
/// <returns>true, if the graph building was successful</returns>
private bool CreateConfigurationBasedFilterInstance(Graph graph, IFilterGraph2 graphBuilder, Tuner tuner)
{
string deviceName = graph.Crossbar.Name;
_audioTunerIn = null;
DsDevice[] devices;
//get list of all crossbar devices installed on this system
try
{
devices = DsDevice.GetDevicesOfCat(FilterCategory.AMKSCrossbar);
devices = DeviceSorter.Sort(devices, graph.Tuner.Name);
}
catch (Exception)
{
Log.Log.WriteFile("analog: AddCrossBarFilter no crossbar devices found");
return false;
}
if (devices == null || devices.Length == 0)
{
Log.Log.WriteFile("analog: AddCrossBarFilter no crossbar devices found");
return false;
}
//try each crossbar
for (int i = 0; i < devices.Length; i++)
{
IBaseFilter tmp;
//if crossbar is already in use then we can skip it
if (DevicesInUse.Instance.IsUsed(devices[i]))
continue;
if (!deviceName.Equals(devices[i].Name))
continue;
Log.Log.WriteFile("analog: AddCrossBarFilter use:{0} {1}", devices[i].Name, i);
int hr;
try
{
//add the crossbar to the graph
hr = graphBuilder.AddSourceFilterForMoniker(devices[i].Mon, null, devices[i].Name, out tmp);
}
catch (Exception)
{
Log.Log.WriteFile("analog: cannot add filter to graph");
continue;
}
if (hr != 0)
{
//failed. try next crossbar
if (tmp != null)
{
graphBuilder.RemoveFilter(tmp);
Release.ComObject("CrossBarFilter", tmp);
}
continue;
}
_crossBarFilter = (IAMCrossbar)tmp;
_videoPinMap = graph.Crossbar.VideoPinMap;
_audioPinMap = graph.Crossbar.AudioPinMap;
_videoPinRelatedAudioMap = graph.Crossbar.VideoPinRelatedAudioMap;
_videoOutPinIndex = graph.Crossbar.VideoOut;
_audioOutPinIndex = graph.Crossbar.AudioOut;
if (_videoOutPinIndex == -1)
{
Log.Log.WriteFile("analog: AddCrossbarFilter no video output found");
graphBuilder.RemoveFilter(tmp);
_crossBarFilter = null;
Release.ComObject("CrossBarFilter", tmp);
continue;
}
//connect tv tuner->crossbar
IPin tunerOut = DsFindPin.ByDirection(tuner.Filter, PinDirection.Output,
graph.Tuner.VideoPin);
if (tunerOut != null && _videoPinMap.ContainsKey(AnalogChannel.VideoInputType.Tuner) &&
FilterGraphTools.ConnectPin(graphBuilder, tunerOut, tmp, _videoPinMap[AnalogChannel.VideoInputType.Tuner]))
{
// Got it, we're done
_filterCrossBar = tmp;
_crossBarDevice = devices[i];
DevicesInUse.Instance.Add(_crossBarDevice);
if (_audioTunerIn == null)
{
_audioTunerIn = DsFindPin.ByDirection(_filterCrossBar, PinDirection.Input,
_audioPinMap[AnalogChannel.AudioInputType.Tuner]);
}
Release.ComObject("tuner video out", tunerOut);
_videoOut = DsFindPin.ByDirection(_filterCrossBar, PinDirection.Output, _videoOutPinIndex);
if (_audioOutPinIndex != -1)
{
_audioOut = DsFindPin.ByDirection(_filterCrossBar, PinDirection.Output, _audioOutPinIndex);
}
Log.Log.WriteFile("analog: AddCrossBarFilter succeeded");
break;
}
// cannot connect tv tuner to crossbar, try next crossbar device
if (tmp != null)
{
graphBuilder.RemoveFilter(tmp);
Release.ComObject("crossbarFilter filter", tmp);
}
if (tunerOut != null)
{
Release.ComObject("tuner video out", tunerOut);
}
}
return _filterCrossBar != null;
}
/// <summary>
/// Adds the cross bar filter to the graph and connects the tv tuner to the crossbar.
/// at the end of this method the graph looks like:
/// [tv tuner]----->[crossbar]
/// </summary>
/// <param name="tuner">The tuner component</param>
/// <param name="graph">The stored graph</param>
/// <param name="graphBuilder">The graphBuilder</param>
/// <returns>true, if the graph building was successful</returns>
public bool CreateFilterInstance(Graph graph, IFilterGraph2 graphBuilder, Tuner tuner)
{
if (!string.IsNullOrEmpty(graph.Crossbar.Name))
{
Log.Log.WriteFile("analog: Using Crossbar configuration from stored graph");
if (CreateConfigurationBasedFilterInstance(graph, graphBuilder, tuner))
{
Log.Log.WriteFile("analog: Using Crossbar configuration from stored graph succeeded");
return true;
}
}
Log.Log.WriteFile("analog: No stored or invalid graph for Crossbar component - Trying to detect");
return CreateAutomaticFilterInstance(graph, graphBuilder, tuner);
}
/// <summary>
/// Checks the capabilities of the tuner device
/// </summary>
/// <returns>true, if the checks were successful</returns>
private bool CheckCapabilities(Graph graph)
{
if (_tuner == null)
{
Log.Log.WriteFile("");
return false;
}
UpdateMinMaxChannel();
AMTunerModeType tunerModes;
_tuner.GetAvailableModes(out tunerModes);
_supportsFMRadio = (AMTunerModeType.FMRadio & tunerModes) != 0;
_supportsAMRadio = (AMTunerModeType.AMRadio & tunerModes) != 0;
if (_supportsFMRadio && !_supportsAMRadio)
{
graph.Tuner.RadioMode = RadioMode.FM;
}
if (!_supportsFMRadio && _supportsAMRadio)
{
graph.Tuner.RadioMode = RadioMode.AM;
}
if (_supportsFMRadio && _supportsAMRadio)
{
graph.Tuner.RadioMode = RadioMode.FM | RadioMode.AM;
}
return true;
}
/// <summary>
/// Creates the tuner filter instance
/// </summary>
/// <param name="graph">The stored graph</param>
/// <param name="graphBuilder">The graphbuilder</param>
/// <returns>true, if the graph building was successful</returns>
public bool CreateFilterInstance(Graph graph, IFilterGraph2 graphBuilder)
{
Log.Log.WriteFile("analog: AddTvTunerFilter {0}", _tunerDevice.Name);
if (DevicesInUse.Instance.IsUsed(_tunerDevice))
return false;
IBaseFilter tmp;
int hr;
try
{
hr = graphBuilder.AddSourceFilterForMoniker(_tunerDevice.Mon, null, _tunerDevice.Name, out tmp);
}
catch (Exception)
{
Log.Log.WriteFile("analog: cannot add filter to graph");
return false;
}
if (hr != 0)
{
Log.Log.Error("analog: AddTvTunerFilter failed:0x{0:X}", hr);
throw new TvException("Unable to add tvtuner to graph");
}
_filterTvTuner = tmp;
DevicesInUse.Instance.Add(_tunerDevice);
_tuner = _filterTvTuner as IAMTVTuner;
if (string.IsNullOrEmpty(graph.Tuner.Name) || !_tunerDevice.Name.Equals(
graph.Tuner.Name))
{
Log.Log.WriteFile("analog: Detecting capabilities of the tuner");
graph.Tuner.Name = _tunerDevice.Name;
int index;
_audioPin = FilterGraphTools.FindMediaPin(_filterTvTuner, MediaType.AnalogAudio, MediaSubType.Null,
PinDirection.Output, out index);
graph.Tuner.AudioPin = index;
return CheckCapabilities(graph);
}
Log.Log.WriteFile("analog: Using stored capabilities of the tuner");
_audioPin = DsFindPin.ByDirection(_filterTvTuner, PinDirection.Output, graph.Tuner.AudioPin);
_supportsFMRadio = (graph.Tuner.RadioMode & RadioMode.FM) != 0;
_supportsAMRadio = (graph.Tuner.RadioMode & RadioMode.AM) != 0;
return true;
}
/// <summary>
/// Creates the teletext component in the graph. First we try to use the stored informations in the graph
/// </summary>
/// <param name="graph">The stored graph</param>
/// <param name="graphBuilder">The graphbuilder</param>
/// <param name="capture">The capture component</param>
/// <returns>true, if the building was successful; false otherwise</returns>
public bool CreateFilterInstance(Graph graph, IFilterGraph2 graphBuilder, Capture capture)
{
Log.Log.WriteFile("analog: SetupTeletext()");
Guid guidBaseFilter = typeof (IBaseFilter).GUID;
object obj;
//find and add tee/sink to sink filter
DsDevice[] devices = DsDevice.GetDevicesOfCat(FilterCategory.AMKSSplitter);
devices[0].Mon.BindToObject(null, null, ref guidBaseFilter, out obj);
_teeSink = (IBaseFilter)obj;
int hr = graphBuilder.AddFilter(_teeSink, devices[0].Name);
if (hr != 0)
{
Log.Log.Error("analog:SinkGraphEx.SetupTeletext(): Unable to add tee/sink filter");
return false;
}
//connect capture filter -> tee sink filter
IPin pin = DsFindPin.ByDirection(_teeSink, PinDirection.Input, 0);
hr = graphBuilder.Connect(capture.VBIPin, pin);
Release.ComObject(pin);
if (hr != 0)
{
//failed...
Log.Log.Error("analog: unable to connect capture->tee/sink");
graphBuilder.RemoveFilter(_teeSink);
Release.ComObject(_teeSink);
_teeSink = _filterWstDecoder = null;
return false;
}
if (!string.IsNullOrEmpty(graph.Teletext.Name))
{
Log.Log.WriteFile("analog: Using Teletext-Component configuration from stored graph");
devices = DsDevice.GetDevicesOfCat(graph.Teletext.Category);
foreach (DsDevice device in devices)
{
if (device.Name != null && device.Name.Equals(graph.Teletext.Name))
{
//found it, add it to the graph
Log.Log.Info("analog:Using teletext component - {0}", graph.Teletext.Name);
device.Mon.BindToObject(null, null, ref guidBaseFilter, out obj);
_filterWstDecoder = (IBaseFilter)obj;
hr = graphBuilder.AddFilter(_filterWstDecoder, device.Name);
if (hr != 0)
{
//failed...
Log.Log.Error("analog:SinkGraphEx.SetupTeletext(): Unable to add WST Codec filter");
graphBuilder.RemoveFilter(_filterWstDecoder);
_filterWstDecoder = null;
}
break;
}
}
}
if (_filterWstDecoder == null)
{
Log.Log.WriteFile("analog: No stored or invalid graph for Teletext component - Trying to detect");
//find the WST codec filter
devices = DsDevice.GetDevicesOfCat(FilterCategory.AMKSVBICodec);
foreach (DsDevice device in devices)
{
if (device.Name != null && device.Name.IndexOf("WST") >= 0)
{
//found it, add it to the graph
Log.Log.Info("analog:Found WST Codec filter");
device.Mon.BindToObject(null, null, ref guidBaseFilter, out obj);
_filterWstDecoder = (IBaseFilter)obj;
hr = graphBuilder.AddFilter(_filterWstDecoder, device.Name);
if (hr != 0)
{
//failed...
Log.Log.Error("analog:Unable to add WST Codec filter");
graphBuilder.RemoveFilter(_teeSink);
Release.ComObject(_teeSink);
_teeSink = _filterWstDecoder = null;
return false;
}
graph.Teletext.Name = device.Name;
graph.Teletext.Category = FilterCategory.AMKSVBICodec;
break;
}
}
//Look for VBI Codec for Vista users as Vista doesn't use WST Codec anymore
if (_filterWstDecoder == null)
{
devices = DsDevice.GetDevicesOfCat(FilterCategory.AMKSMULTIVBICodec);
foreach (DsDevice device in devices)
if (device.Name != null && device.Name.IndexOf("VBI") >= 0)
{
//found it, add it to the graph
Log.Log.Info("analog:Found VBI Codec filter");
device.Mon.BindToObject(null, null, ref guidBaseFilter, out obj);
_filterWstDecoder = (IBaseFilter)obj;
hr = graphBuilder.AddFilter(_filterWstDecoder, device.Name);
if (hr != 0)
{
//failed...
Log.Log.Error("analog:Unable to add VBI Codec filter");
graphBuilder.RemoveFilter(_teeSink);
Release.ComObject(_teeSink);
_teeSink = _filterWstDecoder = null;
return false;
}
graph.Teletext.Name = device.Name;
graph.Teletext.Category = FilterCategory.AMKSMULTIVBICodec;
break;
}
}
}
if (_filterWstDecoder == null)
{
Log.Log.Error("analog: unable to find WST Codec or VBI Codec filter");
graphBuilder.RemoveFilter(_teeSink);
Release.ComObject(_teeSink);
_teeSink = _filterWstDecoder = null;
return false;
}
//connect tee sink filter-> wst codec filter
IPin pinOut = DsFindPin.ByDirection(_teeSink, PinDirection.Output, 0);
pin = DsFindPin.ByDirection(_filterWstDecoder, PinDirection.Input, 0);
hr = graphBuilder.Connect(pinOut, pin);
Release.ComObject(pin);
Release.ComObject(pinOut);
if (hr != 0)
{
//failed
Log.Log.Error("analog: unable to tee/sink->wst codec");
graphBuilder.RemoveFilter(_filterWstDecoder);
graphBuilder.RemoveFilter(_teeSink);
Release.ComObject(_filterWstDecoder);
Release.ComObject(_teeSink);
_teeSink = _filterWstDecoder = null;
_teeSink = null;
graph.Teletext.Name = null;
graph.Teletext.Category = new Guid();
return false;
}
//done
Log.Log.WriteFile("analog: teletext setup");
if (_filterWstDecoder != null)
{
Log.Log.WriteFile("analog:connect wst/vbi codec->tsfilesink");
_pinWST_VBI = DsFindPin.ByDirection(_filterWstDecoder, PinDirection.Output, 0);
}
return true;
}