How to (automatically) determine optical media type/content?

dwidmann · 2011-01-19 05:50:20

Is there a scriptable/cli way to determine optical media/content (ie: cd data, cd audio, dvd data, dvd audio, etc) that doesn't involve the now deprecated hal? Not at all interested in a graphical solution, nor one that involves hal as I already know how to do that. I'm just wondering if there's another way, because I've probed around and can't seem to find anything.

I intend to use it to make my cd auto-ripper a bit smarter.

Mr Green · 2011-01-19 08:11:37

http://www.linuxquestions.org/questions … er-712856/

Quick search not sure if it will help

MrG

berbae · 2011-01-19 10:14:50

You may look into the udevadm info command or udisks --show-info
See the manual for details.

dwidmann · 2011-01-19 11:36:20

berbae wrote:

You may look into the udevadm info command or udisks --show-info
See the manual for details.

It doesn't offer much(no real way to detect if its a video dvd), and it really isn't all that pretty(not as elegant as hal), but it will work for some things, and that helps a lot Thank you.

#!/usr/bin/python2
#isaudiocd.py

from subprocess import check_output, CalledProcessError
import sys
if not len(sys.argv) > 1:
    print('You must supply a device argument to check - ie: /dev/sr0')
    sys.exit(2)
try:
    command = "udisks --show-info %s" % sys.argv[1]
    output = check_output(command, shell=True).decode('utf-8').strip().split('\n')
    audio_line = ''
    for line in output:
        if line.find('num audio tracks') > -1:
            audio_line = line
            break
    if audio_line == '':
        sys.exit(2)
    answer = audio_line.split(':')[1].strip()
    if answer == 1:
        sys.exit(0)
    else:
        sys.exit(1)
except CalledProcessError:
    sys.exit(2)

berbae · 2011-01-20 10:39:45

You can also get the media type of an optical disc.
It's in the drive: part of the output of udisks --shows-info, the line beginning with media:.

For a live CD, I get :

media: optical_cd_r

For a DVD :

media: optical_dvd

But using only that command, I don't see a way to know the content of the DVD, data or video. Maybe the filesystem type, but I am not sure about that.

dwidmann · 2011-02-21 05:20:14

I haven't figured out the DVD one yet, as it's not the real priority of mine, but I have figured out a better way for dealing with the audio disks.

ACTION=="remove", GOTO="cdrom_end"
SUBSYSTEM!="block", GOTO="cdrom_end"
KERNEL!="sr[0-9]*|xvd*", GOTO="cdrom_end"
ENV{DEVTYPE}!="disk", GOTO="cdrom_end"

KERNEL=="sr[0-9]*", ENV{ID_CDROM}="1"
IMPORT{program}="/lib/udev/cdrom_id --export %k"
ACTION=="change", ENV{ID_CDROM_MEDIA_TRACK_COUNT_AUDIO}!="", RUN+="/bin/su - blackwaltz -c '/home/blackwaltz/bin/autorip.sh $env{DEVNAME}'"

LABEL="cdrom_end"

Arch Linux

#1 2011-01-19 05:50:20

How to (automatically) determine optical media type/content?

#2 2011-01-19 08:11:37

Re: How to (automatically) determine optical media type/content?

#3 2011-01-19 10:14:50

Re: How to (automatically) determine optical media type/content?

#4 2011-01-19 11:36:20

Re: How to (automatically) determine optical media type/content?

#5 2011-01-20 10:39:45

Re: How to (automatically) determine optical media type/content?

#6 2011-02-21 05:20:14

Re: How to (automatically) determine optical media type/content?

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