Re: Audio Loop

Robert,

Not really relevant to this group, but anyway...

I assuming that the sound you have is a loopable sound - i.e. there are
no discontinuities between the end of the file and the start if looped.
Test this using "soundeditor" - it has a loop function.

If the file is short, you could just read the whole lot into a buffer.
Alternatively just continuously reread the file (just seeking back to the
start from the end) and loop until interrupted. For a large file, you could 
even "adaptively cache" the samples into a memory mapped region with calls to
madvise to encourage reclamation as needed (this last one is a slightly
over the top, and most likely overengineering).

The al calls don't care about file boundaries at all.

Tom

"Blickensdorf,
 Robert D" wrote:
> How do command an SGI Onyx2 to continuously play an audio loop?  I see how
> you read and write marker and loop data to and from an audio file (aiff-c
> files) through the "af" library calls. What I don't understand is how to
> actually play a loop with the "al" library calls.