public TimeWarpStream(IAudioStream sourceStream)
: base(sourceStream)
{
byteMappings = new ByteTimeWarpCollection(0);
Mappings = new TimeWarpCollection();
length = sourceStream.Length;
position = sourceStream.Position;
ResetStream();
}
private void mappings_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
var alpha = new ByteTimeWarp {
From = 0, To = 0
};
var omega = new ByteTimeWarp {
From = sourceStream.Length, To = sourceStream.Length
};
if (mappings.Count > 0)
{
// Convert time mappings to byte mappings
// This is the place where the TimeWarps and ByteTimeWarps are kept in sync!!
byteMappings = new ByteTimeWarpCollection(mappings.Count);
foreach (TimeWarp mapping in mappings)
{
byteMappings.Add(ByteTimeWarp.Convert(mapping, Properties));
}
var first = byteMappings.Alpha;
if (first.From > alpha.From)
{
// The first mapping is not at the start of the stream, insert start of stream alpha
byteMappings.Insert(0, alpha);
}
var last = byteMappings.Omega;
if (last.From < omega.From)
{
// The last mapping is not at the end of the stream, insert EOS omega
omega.To += last.Offset;
byteMappings.Insert(byteMappings.Count, omega);
}
}
else
{
byteMappings.Add(alpha);
byteMappings.Add(omega);
}
if (position > byteMappings.Omega.To)
{
Position = byteMappings.Omega.To;
}
ResetStream();
}
