[plt-scheme] audio

On Jun 6, 2008, at 12:21 PM, John Clements wrote:

>
> On Jun 5, 2008, at 7:32 AM, Atmam Ta wrote:
>
>> Hi,
>>
>> I would like to play a sound file and be able to pause it in  
>> response to a user event (or alternatively, play a short segment of  
>> an audio file). Is this possible in PLT-Scheme? I have not found  
>> any library for such tasks...
>
> I'm not aware of such a library. I'm guessing that the difficulty  
> here is in supplying something cross-platform.  It would probably be  
> (relatively) simple, though, to use the FFI to construct a PLaneT  
> package that works on one particular platform.

FWIW, I just took a look at how to do it in OS X, and I came up with  
this interface:

http://developer.apple.com/documentation/MusicAudio/Conceptual/AudioQueueProgrammingGuide/AQPlayback/chapter_4_section_1.html#/ 
/apple_ref/doc/uid/TP40005343-CH3-SW1

Unfortunately, the interface is a bit too low-level to be a one- or  
two-hour project...

Ah well.

John Clements

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