public override bool isReversible(int t, int c)
{
if (reversible[t] == null)
{
// Reversibility not yet calculated for this tile
reversible[t] = new bool[NumComps];
for (int i = reversible[t].Length - 1; i >= 0; i--)
{
reversible[t][i] = isSubbandReversible(src.getSynSubbandTree(t, i));
}
}
return reversible[t][c];
}