private void disposeDecoder()
{
if (_decoder != null)
{
_decoder.VideoFrameEvent -= onDisplay;
_decoder.Dispose();
}
_decoder = null;
}
private bool?GetNextDecoder(bool keepOldDecoder)
{
// look for the next unplayed decoder after our current decoder
LinkedListNode <IStreamDecoder> node;
if (_streamDecoder == null)
{
// first stream...
node = _streamDecoders.First;
}
else
{
node = _streamDecoders.Find(_streamDecoder);
while (node != null && node.Value.IsEndOfStream)
{
node = node.Next;
}
}
// clean up and remove the old decoder if we're not keeping it
if (!keepOldDecoder)
{
_streamDecoders.Remove(_streamDecoder);
_streamDecoder.Dispose();
}
// finally, if we still don't have a valid decoder, try to find a new stream in the container
if (node == null && FindNextStream())
{
node = _streamDecoders.Last;
}
// switch to the new decoder, if one was found
if (node != null)
{
return(SwitchToDecoder(node.Value));
}
return(null);
}