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CD Detection Experiment

August 24th, 2006 by Multimedia Mike

Some years ago, I wrote a program named the CD Detection Experiment to toy around with compact discs. I reference this tool often in my Multimedia Exploration Journal. The end goal was a tool that could analyze a variety of different CD types, including mode 2 discs, Philips CD-I discs, and 3DO discs. All it does is open a raw CD device under Unix, check the first few sectors, and decide what kind of CD is in the drive. I’m trying to remember if this tool preceded my CD-related work for xine or if I used code from my xine work in this program. There is code for Solaris and FreeBSD reading, so I am guessing that I based this on the xine work.


CDCDCD

Anyway, if you care, here is the code. Here is some sample output, from that Deathtrap Dungeon game discussed in this journal entry, the one with a weird mixed mode:

$ ./cdexp /dev/cdrom
CD Detection Experiment
toc:
  first track = 1
   last track = 18

toc entries:
leadout track: MSF: 76:16:18, first frame = 343218
track  1,  data, MSF: 00:02:00, first frame = 150
 mode 1 data
 iso9660 fs signature found
 system id =
 volume id = Deathtrap
track  2, audio, MSF: 28:09:14, first frame = 126689
track  3, audio, MSF: 30:37:58, first frame = 137833
track  4, audio, MSF: 32:37:28, first frame = 146803
track  5, audio, MSF: 35:32:30, first frame = 159930
track  6, audio, MSF: 39:57:58, first frame = 179833
track  7, audio, MSF: 43:07:24, first frame = 194049
track  8, audio, MSF: 45:45:35, first frame = 205910
track  9, audio, MSF: 49:33:19, first frame = 222994
track 10, audio, MSF: 52:38:22, first frame = 236872
track 11, audio, MSF: 55:17:04, first frame = 248779
track 12, audio, MSF: 58:13:66, first frame = 262041
track 13, audio, MSF: 60:28:28, first frame = 272128
track 14, audio, MSF: 62:43:43, first frame = 282268
track 15, audio, MSF: 64:59:33, first frame = 292458
track 16, audio, MSF: 67:14:00, first frame = 302550
track 17, audio, MSF: 75:36:00, first frame = 340200
track 18,  data, MSF: 76:00:00, first frame = 342000
 mode 1 data
 iso9660 fs signature found
 system id =
 volume id = Deathtrap

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