/// <summary>
/// Queries the AccurateRip database for the CRCs of the tracks on the specified CD
/// </summary>
/// <param name="totalLengthSeconds">
/// Total length of the CD (from the beginning of the first track to the end of the
/// last track) in seconds
/// </param>
/// <param name="trackOffsetsSeconds">
/// Offsets of the individual tracks on the CD in seconds
/// </param>
/// <returns></returns>
public static Request <CdInfo[]> QueryDatabase(
int totalLengthSeconds, int[] trackOffsetsSeconds
)
{
try {
// Calculate the three IDs required by a query to the AccurateRip database. AccurateRip
// improves (marginally) on the flawed CDDB disc id by providing two additional ids,
// however, this doesn't hurt AccurateRip nearly as much as it would a CDDB service.
int discId1 = CalculateDiscId1(trackOffsetsSeconds);
int discId2 = CalculateDiscId2(trackOffsetsSeconds);
int cddbDiscId = Cddb.CalculateDiscId(totalLengthSeconds, trackOffsetsSeconds);
int trackCount = trackOffsetsSeconds.Length;
return(QueryDatabase(discId1, discId2, cddbDiscId, trackCount));
}
catch (Exception exception) {
return(Request <CdInfo[]> .CreateFailedDummy(exception));
}
}
/// <summary>Sends the query to the CDDB server</summary>
private void sendQuery() {
StringBuilder builder = new StringBuilder(192);
// Build the initial query string consisting of the command, CDDB disc id
// and the number of tracks on the CD
builder.AppendFormat(
"cddb query {0:x8} {1} ",
Cddb.CalculateDiscId(this.discLengthSeconds, this.trackOffsetsSeconds),
this.trackOffsetsSeconds.Length
);
// Append the start offsets
for(int index = 0; index < this.trackOffsetsSeconds.Length; ++index) {
builder.AppendFormat("{0} ", this.trackOffsetsSeconds[index] * 75);
}
builder.Append(this.discLengthSeconds);
this.protocol.SendLine(builder.ToString(), 5000);
}