Re: [MacPerl] Querying audio CD for track pre-play times

["Kevin R. Boyce" <Kevin.R.Boyce@gsfc.nasa.gov>]

On 4/20/2000 at 12:14 PM, ajf@afco.demon.co.uk (Alan Fry) wrote:

> It seems that 'index' takes only values 0 and 1, the '0' marking the 
> non-audio frames -- is that always the case?

Just to be clear, 'index' can be larger than 1.  Very few commercial CDs use
index marks (other than as pre-track pause indicators), and even fewer players
can access them.  My copy of Glenn Gould doing the Goldberg Variations is (if I
recall correctly) all one track, with an index point at each variation.  This is
silly, and may have been fixed in later pressings.  Also the title track on the
Grateful Dead's "Terrapin Station" has index marks indicating the sections of
the song.  

So 0 means pause, and nonzero means music.

We now return you to more code-oriented discussion...

-Kevin "Light the song with sense and color" Boyce
-- 
Kevin Boyce                        Kevin.R.Boyce@gsfc.nasa.gov
Code 662                           (301) 286-3036
NASA/GSFC, Greenbelt, MD  20771             -1684 (FAX)
 Photons don't lie.  --CKS



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