(Feb-06-2024, 05:45 AM)Daring_T Wrote: I am currently running into an issue where I need to be able to find the type of disc in the drive

(Feb-06-2024, 05:45 AM)Daring_T Wrote: I am currently working on a program to automate ripping and backing my collection of CDs, DVDs and Blue-rays. I am currently running into an issue where I need to be able to find the type of disc in the drive but I have been unable to located a library that can do so. Has anymore ran into this issue before and if so what was your solution? The only janky way I'm seeing is by looking at Blue-rays and DVDs file structure. For DVD its TS_Video and or TS_Audio. For Blue-ray its AACS, BDMV and CERTIFICATE and go by that and for CD I have an bash command like abcde and catch if it fails or succeeds . Also if this help's I am writing this under Linux. If you have any suggestions or another way of looking at this please let me know.

Thanks,
Daring_T

(Feb-06-2024, 09:01 AM)Gribouillis Wrote:

(Feb-06-2024, 05:45 AM)Daring_T Wrote: I am currently running into an issue where I need to be able to find the type of disc in the drive

I'd say first find how to do it with Linux on the command line. Then Python can do the same.
You could perhaps obtain something with pyudev

(Feb-06-2024, 11:15 AM)Danishhafeez Wrote:

(Feb-06-2024, 05:45 AM)Daring_T Wrote: I am currently working on a program to automate ripping and backing my collection of CDs, DVDs and Blue-rays. I am currently running into an issue where I need to be able to find the type of disc in the drive but I have been unable to located a library that can do so. Has anymore ran into this issue before and if so what was your solution? The only janky way I'm seeing is by looking at Blue-rays and DVDs file structure. For DVD its TS_Video and or TS_Audio. For Blue-ray its AACS, BDMV and CERTIFICATE and go by that and for CD I have an bash command like abcde and catch if it fails or succeeds . Also if this help's I am writing this under Linux. If you have any suggestions or another way of looking at this please let me know.

Thanks,
Daring_T

It seems like you're on the right track with your approach, but there might be a more straightforward way to determine the type of disc in the drive programmatically, especially under Linux.

One common method is to use the blkid command, which is typically used to locate/block device attributes like UUIDs or filesystem types. When a disc is inserted into the drive, it should register as a block device, and blkid can provide information about it.

$blkid

This command should list all block devices, including optical drives and their respective filesystems. By parsing the output of this command, you can determine the type of disc inserted.

Best Regard
Danish Hafeez | QA Assistant
ictinnovations.com

(Feb-07-2024, 03:34 AM)Daring_T Wrote: I am not seeing a way to see the disc's type.

Output:
udevadm info -q property /dev/cdrom

Output:
ID_CDROM_MEDIA_DVD=1

Output:
ID_CDROM_MEDIA_CD=1

import pyudev


def main():
    context = pyudev.Context()
    a = context.list_devices(sys_name="sr0")
    dev = next(iter(a))
    # print(dev)
    # print(dict(dev.properties))
    if dev.properties.get("ID_CDROM_MEDIA_CD", False):
        print("CD drive contains a CD")
    elif dev.properties.get("ID_CDROM_MEDIA_DVD", False):
        print("CD drive contains a DVD")


if __name__ == "__main__":
    main()

Output:
λ python paillasse/pf/cdrom.py
CD drive contains a DVD

(Feb-07-2024, 07:48 AM)Pedroski55 Wrote: Looks like a job for dd!

Since you will have to place the discs in by hand, I presume, you know what it is and the title.

Have a look here for how to do this in Linux

(Feb-07-2024, 01:32 PM)Gribouillis Wrote:

(Feb-07-2024, 03:34 AM)Daring_T Wrote: I am not seeing a way to see the disc's type.

I had some success on my linux computer with the command

Output:
udevadm info -q property /dev/cdrom

When a DVD is inserted, the output contains a line

Output:
ID_CDROM_MEDIA_DVD=1

When a CD is inserted, or an audio CD, there is a line

Output:
ID_CDROM_MEDIA_CD=1

When there is nothing in the CD drive, there is no ID_CDROM_MEDIA... line in the output. I don't have a blue ray disk to see what it does.

EDIT: after some tests, I was able to get the information with pyudev

import pyudev


def main():
    context = pyudev.Context()
    a = context.list_devices(sys_name="sr0")
    dev = next(iter(a))
    # print(dev)
    # print(dict(dev.properties))
    if dev.properties.get("ID_CDROM_MEDIA_CD", False):
        print("CD drive contains a CD")
    elif dev.properties.get("ID_CDROM_MEDIA_DVD", False):
        print("CD drive contains a DVD")


if __name__ == "__main__":
    main()

Output:
λ python paillasse/pf/cdrom.py
CD drive contains a DVD

It seems that for blue ray, the property is ID_CDROM_MEDIA_BD

Output:
{'CURRENT_TAGS': ':uaccess:systemd:seat:',
 'DEVLINKS': '/dev/disk/by-path/pci-0000:00:14.0-usb-0:4.4:1.0-scsi-0:0:0:0 '
             '/dev/disk/by-id/usb-ASUS_BW-16D1HT_20201230-0:0 '
             '/dev/disk/by-uuid/8cd94d0851963909 '
             '/dev/disk/by-label/INCREDIBLES_D2',
 'DEVNAME': '/dev/sr1',
 'DEVPATH': '/devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4.4/3-4.4:1.0/host5/target5:0:0/5:0:0:0/block/sr1',
 'DEVTYPE': 'disk',
 'DISKSEQ': '82',
 'ID_BUS': 'usb',
 'ID_CDROM': '1',
 'ID_CDROM_BD': '1',
 'ID_CDROM_BD_R': '1',
 'ID_CDROM_BD_RE': '1',
 'ID_CDROM_BD_R_RRM': '1',
 'ID_CDROM_BD_R_SRM': '1',
 'ID_CDROM_CD': '1',
 'ID_CDROM_CD_R': '1',
 'ID_CDROM_CD_RW': '1',
 'ID_CDROM_DVD': '1',
 'ID_CDROM_DVD_PLUS_R': '1',
 'ID_CDROM_DVD_PLUS_RW': '1',
 'ID_CDROM_DVD_PLUS_R_DL': '1',
 'ID_CDROM_DVD_R': '1',
 'ID_CDROM_DVD_RAM': '1',
 'ID_CDROM_DVD_RW': '1',
 'ID_CDROM_DVD_RW_RO': '1',
 'ID_CDROM_DVD_RW_SEQ': '1',
 'ID_CDROM_DVD_R_DL': '1',
 'ID_CDROM_DVD_R_DL_JR': '1',
 'ID_CDROM_DVD_R_DL_SEQ': '1',
 'ID_CDROM_MEDIA': '1',
 'ID_CDROM_MEDIA_BD': '1',
 'ID_CDROM_MEDIA_SESSION_COUNT': '1',
 'ID_CDROM_MEDIA_STATE': 'complete',
 'ID_CDROM_MEDIA_TRACK_COUNT': '1',
 'ID_CDROM_MEDIA_TRACK_COUNT_DATA': '1',
 'ID_CDROM_MRW': '1',
 'ID_CDROM_MRW_W': '1',
 'ID_CDROM_RW_REMOVABLE': '1',
 'ID_FOR_SEAT': 'block-pci-0000_00_14_0-usb-0_4_4_1_0-scsi-0_0_0_0',
 'ID_FS_APPLICATION_ID': 'APPLICATION_ID',
 'ID_FS_LABEL': 'INCREDIBLES_D2',
 'ID_FS_LABEL_ENC': 'INCREDIBLES_D2',
 'ID_FS_LOGICAL_VOLUME_ID': 'INCREDIBLES_D2',
 'ID_FS_TYPE': 'udf',
 'ID_FS_USAGE': 'filesystem',
 'ID_FS_UUID': '8cd94d0851963909',
 'ID_FS_UUID_ENC': '8cd94d0851963909',
 'ID_FS_VERSION': '2.50',
 'ID_FS_VOLUME_ID': 'INCREDIBLES_D2',
 'ID_FS_VOLUME_SET_ID': '8CD94D0851963909_VOLUME_SET_ID',
 'ID_INSTANCE': '0:0',
 'ID_MODEL': 'BW-16D1HT',
 'ID_MODEL_ENC': 'BW-16D1HT\\x20\\x20\\x20\\x20\\x20\\x20\\x20',
 'ID_MODEL_ID': '0611',
 'ID_PATH': 'pci-0000:00:14.0-usb-0:4.4:1.0-scsi-0:0:0:0',
 'ID_PATH_TAG': 'pci-0000_00_14_0-usb-0_4_4_1_0-scsi-0_0_0_0',
 'ID_REVISION': '3.00',
 'ID_SERIAL': 'ASUS_BW-16D1HT_20201230-0:0',
 'ID_SERIAL_SHORT': '01234567',
 'ID_TYPE': 'cd',
 'ID_USB_DRIVER': 'usb-storage',
 'ID_USB_INTERFACES': ':080650:',
 'ID_USB_INTERFACE_NUM': '00',
 'ID_VENDOR': 'ASUS',
 'ID_VENDOR_ENC': 'ASUS\\x20\\x20\\x20\\x20',
 'ID_VENDOR_ID': '1f75',
 'MAJOR': '11',
 'MINOR': '1',
 'SUBSYSTEM': 'block',
 'SYSTEMD_MOUNT_DEVICE_BOUND': '1',
 'TAGS': ':uaccess:systemd:seat:',
 'USEC_INITIALIZED': '1989315471'}

(Feb-08-2024, 05:56 AM)Daring_T Wrote: Also here is what a blue-ray looks like with running dict(dev.properties):