How to get the number of tracks on a disc?

[R.M. Morrien]

Hi,

I was wondering if there is a usb call that can give me the number of tracks
that's on a MD.

What I can do now is: try a getTrackName in a for loop from 0-256 and if one
fails stop,
but it seems to me this could be done better if I can ask for the number of
tracks.

This information is not hidden in the disc name is it? If it is: this would
be quite stupid don't
you think? Maybe the disc name is corrupt e.g.

Martijn

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[Michael Davidson]

Post by R.M. Morrien
Hi,
I was wondering if there is a usb call that can give me the number of tracks
that's on a MD.
What I can do now is: try a getTrackName in a for loop from 0-256 and if one
fails stop,
but it seems to me this could be done better if I can ask for the number of
tracks.
This information is not hidden in the disc name is it? If it is: this would
be quite stupid don't
you think? Maybe the disc name is corrupt e.g.

No, there is a call. Send the following to the device.
char request[] = {
0x00, 0x18, 0x06,
0x02, 0x10, 0x10, 0x01,
0x30, 0x00,
0x10, 0x00,
0xff, 0x00,
0x00, 0x00, 0x00, 0x00
};

Then grab the buffer length, ask for the reply and the size is the last byte
of the array

You might want to look at http://www.marcus-brinkmann.de/files/freemd_4.html
for more details.