/// <summary>
/// QueryConnect checks if two Pins can be connected.
/// </summary>
/// <param name="pin">Pin 1</param>
/// <param name="other">Pin 2</param>
/// <returns>True if they accept connection</returns>
static bool QueryConnect(IPin pin, IPin other)
{
IEnumMediaTypes enumTypes;
int hr = pin.EnumMediaTypes(out enumTypes);
if (hr != 0 || enumTypes == null)
{
return(false);
}
int count = 0;
IntPtr ptrFetched = Marshal.AllocCoTaskMem(4);
try
{
for (; ;)
{
AMMediaType[] types = new AMMediaType[1];
hr = enumTypes.Next(1, types, ptrFetched);
if (hr != 0 || Marshal.ReadInt32(ptrFetched) == 0)
{
break;
}
count++;
try
{
if (other.QueryAccept(types[0]) == 0)
{
return(true);
}
}
finally
{
FilterGraphTools.FreeAMMediaType(types[0]);
}
}
PinInfo info;
PinInfo infoOther;
pin.QueryPinInfo(out info);
other.QueryPinInfo(out infoOther);
ServiceRegistration.Get <ILogger>().Info("Pins {0} and {1} do not accept each other. Tested {2} media types", info.name, infoOther.name, count);
FilterGraphTools.FreePinInfo(info);
FilterGraphTools.FreePinInfo(infoOther);
return(false);
}
finally
{
Marshal.FreeCoTaskMem(ptrFetched);
}
}
/// <summary>
/// Enumerates streams from video (audio, subtitles).
/// </summary>
/// <param name="forceRefresh">Force refresh</param>
/// <returns><c>true</c> if information has been changed.</returns>
protected virtual bool EnumerateStreams(bool forceRefresh)
{
if (_graphBuilder == null || !_initialized)
{
return(false);
}
StreamInfoHandler audioStreams;
StreamInfoHandler subtitleStreams;
StreamInfoHandler titleStreams;
lock (SyncObj)
{
audioStreams = _streamInfoAudio;
subtitleStreams = _streamInfoSubtitles;
titleStreams = _streamInfoTitles;
}
if (forceRefresh || audioStreams == null || subtitleStreams == null || titleStreams == null)
{
audioStreams = new StreamInfoHandler();
subtitleStreams = new StreamInfoHandler();
titleStreams = new StreamInfoHandler();
// Release stream selectors
ReleaseStreamSelectors();
_streamSelectors = FilterGraphTools.FindFiltersByInterface <IAMStreamSelect>(_graphBuilder);
foreach (IAMStreamSelect streamSelector in _streamSelectors)
{
FilterInfo fi = FilterGraphTools.QueryFilterInfoAndFree(((IBaseFilter)streamSelector));
int streamCount;
streamSelector.Count(out streamCount);
for (int i = 0; i < streamCount; ++i)
{
AMMediaType mediaType;
AMStreamSelectInfoFlags selectInfoFlags;
int groupNumber, lcid;
string name;
object pppunk, ppobject;
streamSelector.Info(i, out mediaType, out selectInfoFlags, out lcid, out groupNumber, out name, out pppunk, out ppobject);
// If stream does not contain a LCID, try a lookup from stream name.
if (lcid == 0)
{
lcid = LookupLcidFromName(name);
}
ServiceRegistration.Get <ILogger>().Debug("Stream {4}|{0}: MajorType {1}; Name {2}; PWDGroup: {3}; LCID: {5}",
i, mediaType.majorType, name, groupNumber, fi.achName, lcid);
StreamInfo currentStream = new StreamInfo(streamSelector, i, name, lcid);
switch ((StreamGroup)groupNumber)
{
case StreamGroup.Video:
break;
case StreamGroup.Audio:
if (mediaType.majorType == MediaType.AnalogAudio || mediaType.majorType == MediaType.Audio)
{
String streamName = name.Trim();
String streamAppendix;
if (!CodecHandler.MediaSubTypes.TryGetValue(mediaType.subType, out streamAppendix))
{
streamAppendix = string.Empty;
}
// if audio information is available via WaveEx format, query the channel count
if (mediaType.formatType == FormatType.WaveEx && mediaType.formatPtr != IntPtr.Zero)
{
WaveFormatEx waveFormatEx = (WaveFormatEx)Marshal.PtrToStructure(mediaType.formatPtr, typeof(WaveFormatEx));
currentStream.ChannelCount = waveFormatEx.nChannels;
streamAppendix = String.Format("{0} {1}ch", streamAppendix, currentStream.ChannelCount);
}
if (!string.IsNullOrEmpty(streamAppendix))
{
currentStream.Name = String.Format("{0} ({1})", streamName, streamAppendix);
}
audioStreams.AddUnique(currentStream);
}
break;
case StreamGroup.Subtitle:
case StreamGroup.DirectVobSubtitle:
subtitleStreams.AddUnique(currentStream, true);
break;
case StreamGroup.MatroskaEdition: // This is a MKV Edition handled by Haali splitter
titleStreams.AddUnique(currentStream, true);
break;
}
// Free MediaType and references
FilterGraphTools.FreeAMMediaType(mediaType);
}
}
lock (SyncObj)
{
_streamInfoAudio = audioStreams;
_streamInfoSubtitles = subtitleStreams;
_streamInfoTitles = titleStreams;
}
return(true);
}
return(false);
}
