[Libcdio-devel] Retrieving DATA session from multisession audio disc

[Eric Shattow]

Using cdrtools and extricate ( http://www.phong.org/extricate/ ) it is
possible to extract a data session from a "CD EXTRA" audio disc.

See (5) there is no option in the "iso-info" example tool to specify a
sector offset.

How to extract the data session from a multi-session audio cd and interact
with the resulting "offset" ISO using libcdio tools?

# 1.) cd-info /dev/sr0
cd-info version 0.82 i686-pc-linux-gnu
Copyright (c) 2003, 2004, 2005, 2007, 2008 R. Bernstein
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
CD location   : /dev/sr0
CD driver name: GNU/Linux
   access mode: ioctl

Vendor                      : HL-DT-ST
Model                       : DVD+-RW GSA-T21N
Revision                    : A100
Hardware                                  : CD-ROM or DVD
Can eject                                 : Yes
Can close tray                            : Yes
Can disable manual eject                  : Yes
Can select juke-box disc                  : No

Can set drive speed                       : No
Can read multiple sessions (e.g. PhotoCD) : Yes
Can hard reset device                     : Yes

Reading....
  Can read Mode 2 Form 1                  : Yes
  Can read Mode 2 Form 2                  : Yes
  Can read (S)VCD (i.e. Mode 2 Form 1/2)  : Yes
  Can read C2 Errors                      : Yes
  Can read IRSC                           : Yes
  Can read Media Channel Number (or UPC)  : Yes
  Can play audio                          : Yes
  Can read CD-DA                          : Yes
  Can read CD-R                           : Yes
  Can read CD-RW                          : Yes
  Can read DVD-ROM                        : Yes

Writing....
  Can write CD-RW                         : Yes
  Can write DVD-R                         : Yes
  Can write DVD-RAM                       : No
  Can write DVD-RW                        : No
  Can write DVD+RW                        : No
Disc mode is listed as: CD-DA
CD-ROM Track List (1 - 11)
  #: MSF       LSN    Type   Green? Copy? Channels Premphasis?
  1: 00:02:00  000000 audio  true   yes   2        no
  2: 05:03:11  022586 audio  true   yes   2        no
  3: 08:38:08  038708 audio  true   yes   2        no
  4: 12:19:49  055324 audio  true   yes   2        no
  5: 16:53:39  075864 audio  true   yes   2        no
  6: 21:06:45  094845 audio  true   yes   2        no
  7: 23:53:08  107333 audio  true   yes   2        no
  8: 27:16:71  122621 audio  true   yes   2        no
  9: 30:36:19  137569 audio  true   yes   2        no
 10: 37:05:11  166736 audio  true   yes   2        no
 11: 49:23:70  222145 data   false  no
170: 49:44:24  223674 leadout (501 MB raw, 501 MB formatted)
Media Catalog Number (MCN): 0000000000000
Last CD Session LSN: 222145
audio status: no status
volume level port 0: 255 (0..255) 100 (0..100)
volume level port 1: 255 (0..255) 100 (0..100)
volume level port 2:   0 (0..255)   0 (0..100)
volume level port 3:   0 (0..255)   0 (0..100)
CD Analysis Report
session #2 starts at track 11, LSN: 222145, ISO 9660 blocks:   1384
ISO 9660: 1384 blocks, label `_MM                             '


# 2.) extricate -i /dev/sr0
Drive ready...
Mixed type CD detected...
Start track: 1    End Track: 11
Track  1 (audio): 00:02:00 (0)
Track  2 (audio): 05:03:11 (22586)
Track  3 (audio): 08:38:08 (38708)
Track  4 (audio): 12:19:49 (55324)
Track  5 (audio): 16:53:39 (75864)
Track  6 (audio): 21:06:45 (94845)
Track  7 (audio): 23:53:08 (107333)
Track  8 (audio): 27:16:71 (122621)
Track  9 (audio): 30:36:19 (137569)
Track 10 (audio): 37:05:11 (166736)
Track 11 (data) : 49:23:70 (222145)
Leadout  (data) : 49:44:24 (223674)

# 3.) ./extricate /dev/sr0 8mm-songs_to_love_and_die_by.iso
Drive ready...
Mixed type CD detected...
Start track: 1    End Track: 11
Track  1 (audio): 00:02:00 (0)
Track  2 (audio): 05:03:11 (22586)
Track  3 (audio): 08:38:08 (38708)
Track  4 (audio): 12:19:49 (55324)
Track  5 (audio): 16:53:39 (75864)
Track  6 (audio): 21:06:45 (94845)
Track  7 (audio): 23:53:08 (107333)
Track  8 (audio): 27:16:71 (122621)
Track  9 (audio): 30:36:19 (137569)
Track 10 (audio): 37:05:11 (166736)
Track 11 (data) : 49:23:70 (222145)
Leadout  (data) : 49:44:24 (223674)
Copying track 11 to '8mm-songs_to_love_and_die_by.iso'...
100% (49:44:23)
Done.
Remember, the path table and directory structure of the iso reflect
the fact that the ISO filesystem starts on sector 222145 (49:23:70)
of the CD.  If it is burned to another CD at a different position,
it won't work.  Likewise, any program that reads the iso will need
to be able to compensate for the offset.  Try, for example:
    isoinfo -N 222145 -d -i '8mm-songs_to_love_and_die_by.iso'

# 4.) isoinfo -N 222145 -d -i 8mm-songs_to_love_and_die_by.iso
CD-ROM is in ISO 9660 format
System id: MacImage - 7.3.12.868
Volume id: _MM
Volume set id:
Publisher id:
Data preparer id:
Application id:
Copyright File id:
Abstract File id:
Bibliographic File id:
Volume set size is: 1
Volume set sequence number is: 1
Logical block size is: 2048
Volume size is: 1384
Joliet with UCS level 1 found
NO Rock Ridge present

# 5.) iso-info  8mm-songs_to_love_and_die_by.iso
iso-info version 0.82 i686-pc-linux-gnu
Copyright (c) 2003, 2004, 2005, 2007, 2008 R. Bernstein
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
__________________________________
ISO 9660 image: 8mm-songs_to_love_and_die_by.iso
Application:
Preparer   :
Publisher  :
System     : MacImage
Volume     : 8mm
Volume Set :