/// <summary>
/// Confirms whether the next part of the data is a leader field, meaning
/// that data lies afterwards.
/// </summary>
///
/// <param name="ie">The enumerator of data.</param>
/// <returns>Whether the data was a leader field.</returns>
private bool IsLeader(SoundData.SoundEnumerator ie)
{
// Probably the start of some data! Let's just check a couple more
// data points to make sure.
FrequencyAnalyzer analyzer = new FrequencyAnalyzer();
Int16[] sample = new Int16[4];
try {
// The leader field is 3600 bits long.
for (int i = 0; i < 3600; ++i) {
sample = ie.CurrentFour;
if (sample == null) {
return false;
}
// Normalise the sample to check if it fits the leader spec.
bool[] sizes = analyzer.NormalizeSample(ie, sample);
if (!sizes[2]) {
if (sample[0] > 10000) {
for (int k = 0; k < 4; ++k) {
Console.Write(sample[k] + " ");
}
Console.WriteLine();
}
// The leader field is all 1s.
return false;
}
ie.MoveNextFour();
}
// Nothing thrown, so we have data.
return true;
} catch {
// Not data! Oh well, just keep looking.
return false;
}
}