public bool EnableStream(int Id, AMStreamSelectEnableFlags dwFlags, string Filter)
{
try
{
IBaseFilter foundfilter = DirectShowUtil.GetFilterByName(graphBuilder, Filter);
if (foundfilter != null)
{
IAMStreamSelect pStrm = foundfilter as IAMStreamSelect;
if (pStrm != null)
{
pStrm.Enable(Id, dwFlags);
}
pStrm = null;
DirectShowUtil.ReleaseComObject(foundfilter);
}
}
catch {}
return true;
}
public override int Enable(int lIndex, AMStreamSelectEnableFlags dwFlags)
{
bool changed = false;
uint oldAudioStream = _streamParser.InputStream.AudioStream.StreamId;
for (int index = 0; index < _streamParser.SelectableTracks.Count; index++)
{
var track = _streamParser.SelectableTracks[index];
bool isEnabled = (
index == lIndex && dwFlags == AMStreamSelectEnableFlags.Enable || // the current index should be enabled
dwFlags == AMStreamSelectEnableFlags.EnableAll // all should be enabled
) && dwFlags != AMStreamSelectEnableFlags.DisableAll; // must not be "Disable All"
changed |= _streamParser.InputStream.EnableStream((int)track.StreamId, isEnabled);
}
uint newAudioStream = _streamParser.InputStream.AudioStream.StreamId;
if (!changed)
{
return(NOERROR);
}
// Update output pin
var audioPin = Pins.OfType <SplitterOutputPin>().FirstOrDefault(p => p.Track.Type == DemuxTrack.TrackType.Audio);
if (audioPin != null)
{
AMMediaType mt;
if (MediaTypeBuilder.TryGetType(_streamParser.InputStream.AudioStream, out mt))
{
_streamParser.Tracks[1].SetStreamMediaType(mt);
}
var res = RenameOutputPin(audioPin, oldAudioStream, newAudioStream);
}
if (IsActive && dwFlags != AMStreamSelectEnableFlags.DisableAll)
{
try
{
IMediaSeeking seeking = (IMediaSeeking)FilterGraph;
if (seeking != null)
{
long current;
seeking.GetCurrentPosition(out current);
// Only seek during playback, not on initial selection
if (current != 0)
{
current -= UNITS / 10;
seeking.SetPositions(current, AMSeekingSeekingFlags.AbsolutePositioning, null, AMSeekingSeekingFlags.NoPositioning);
current += UNITS / 10;
seeking.SetPositions(current, AMSeekingSeekingFlags.AbsolutePositioning, null, AMSeekingSeekingFlags.NoPositioning);
}
}
}
catch
{
}
}
return(NOERROR);
}
