Disc Swap API etc.

[emptythought]

Does anyone have a sample of any disc swapping in KOS' 1.3.x API? I wanted to use it in Wolf4SDL; I don't have a Dreamcast (or emulator that supports disc swapping [open\close]) to test it on).

DoomDC by BlackAura has somewhere to start, I just haven't gotten around to it.

[speewave]

the program won't shut off when the eject button is pressed prematurely ... it sits there ... so a "Insert Disc and Press Start" method should work... (you can probably do a test for the correct files)

[BlackAura]

KOS handles disc swapping mostly automatically. If the disc has been changed, the file system will be reinitialized as soon as you try to open a new file handle.

You can also spin down the disc by calling cdrom_spin_down, and you can check the drive's status using cdrom_get_status, like so:

Code: Select all

int status, disc_type;
if(cdrom_get_status(&status, &disc_type) != -1) {
    switch(status) {
        case CD_STATUS_OPEN:
            // Drive door is open
            break;
        case CD_STATUS_NO_DISC:
            // Drive door is closed, no disc is inserted
            break;
    }
}

I don't remember off-hand how to detect if there's actually a disc in the drive. I think the status passes through CD_STATUS_SCANNING, and then settles on CD_STATUS_STANDBY, so you could probably wait for that.

Those constants are all defined in kos/kernel/arch/dreamcast/include/dc/cdrom.h