/// <summary>
/// Retrieve a CDDB DiskID
/// </summary>
/// <returns></returns>
public string GetCDDBDiskID()
{
int numTracks = GetNumTracks();
if (numTracks == -1)
{
throw new Exception("Unable to retrieve the number of tracks, Cannot calculate DiskID.");
}
string postfix = numTracks.ToString();
int i, t = 0, n = 0;
double ofs = 0;
int secs = 0;
/* For backward compatibility this algorithm must not change */
i = 0;
while (i < numTracks)
{
Console.WriteLine("Track {0}: {1}:{2}", i, GetSeconds(i) / 60, GetSeconds(i) % 60);
ofs = (((toc.TrackData[i].Address_1 * 60) + toc.TrackData[i].Address_2) * 75) + toc.TrackData[i].Address_3;
n = n + cddb_sum((toc.TrackData[i].Address_1 * 60) + toc.TrackData[i].Address_2);
secs += GetSeconds(i);
postfix += "+" + string.Format("{0}", ofs);
i++;
}
int numSecs = toc.TrackData[i].Address_1 * 60 + toc.TrackData[i].Address_2;
Console.WriteLine("n = {0}, numSecs = {1}, secs = {2}", n, numSecs, secs);
postfix += "+" + numSecs;
TrackData last = toc.TrackData[numTracks];
TrackData first = toc.TrackData[0];
t = ((last.Address_1 * 60) + last.Address_2) -
((first.Address_1 * 60) + first.Address_2);
ulong lDiscId = (((uint)n % 0xff) << 24 | (uint)t << 8 | (uint)numTracks);
string sDiscId = String.Format("{0:x8}", lDiscId);
return(sDiscId);
}