scsi_toc_track
scsi_toc_track tracks[1]; // one entry per track
* sizeof(scsi_toc_track) + sizeof(scsi_toc_toc);
scsi_toc_track& track = toc->tracks[i];
if (lastTrack * sizeof(scsi_toc_track) > length)
toc->last_track = length / sizeof(scsi_toc_track) + toc->first_track;
is_data_track(const scsi_toc_track& track)