I just received a mail from "Experts Exchange" telling me a question I participated in would be deleted... When I opened the question, in question, I have no recollection of answering this whatsoever... it's not even really my style of coding...
I always Alman bracket alignment, never K&R...
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I can't comment about "MusicBrainz" however, when using freedb (http://www.freedb.org) you need to compute an ID for the CD you have taken a track from, you can find all this information on their site in the "Software->Howto" sections:
But in essence, when you connect to their server to identify a track, you need to provide a disc ID. This is an 8-digit hexadecimal (base-16) number, computed using data from a CD's Table-of-Contents (TOC) in MSF (Minute Second Frame) form.
--- Below is taken directly from the freedb.org "how-to" file regarding generating an ID to use with their service ---
The following is a C code example that illustrates how to generate the CDDB/freedb disc ID. Examples in other programming languages may be found on the freedb web site at http://www.freedb.org in the developers-section. A text description of the algorithm follows, which should contain the necessary information to code the algorithm in any programming language.
struct toc
{
int min;
int sec;
int frame;
};
struct toc cdtoc[100];
int
read_cdtoc_from_drive(void
{
/* Do whatever is appropriate to read the TOC of the CD
* into the cdtoc[] structure array.
*/
return (tot_trks);
}
int
cddb_sum(int n)
{
int ret;
/* For backward compatibility this algorithm must not change */
ret = 0;
while (n > 0) {
ret = ret + (n % 10);
n = n / 10;
}
return (ret);
}
unsigned long
cddb_discid(int tot_trks)
{
int i,
t = 0,
n = 0;
/* For backward compatibility this algorithm must not change */
i = 0;
while (i < tot_trks) {
n = n + cddb_sum((cdtoc[i].min * 60) + cdtoc[i].sec);
i++;
}
t = ((cdtoc[tot_trks].min * 60) + cdtoc[tot_trks].sec) -
((cdtoc[0].min * 60) + cdtoc[0].sec);
return ((n % 0xff) << 24 | t << 8 | tot_trks);
}
main()
{
int tot_trks;
tot_trks = read_cdtoc_from_drive();
printf("The discid is %08x", cddb_discid(tot_trks));
}
This code assumes that your compiler and architecture support 32-bit integers.
