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From: cr_kempke@eisvxe.moundst.mn.org (Travelling SMU GURU)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Asynchronous sound help?
Message-ID: <2366@eisvxe.moundst.mn.org>
Date: 16 Aug 90 10:31:46 GMT
References: <1990Aug14.061951.25766@agate.berkeley.edu>
Organization: 3M Engineering Information Systems
Lines: 51

In article <1990Aug14.061951.25766@agate.berkeley.edu>, chopp@math.berkeley.edu writes:
> I would like to play a sound asyncronously.  I have Inside Mac V in my lap
						      ^^^^^^^^^^^^

	Here's problem #1:  IMV lies.   Get the Sound Manager document
from sumex-aim.stanford.edu (maybe) or apple.com.   It contains the chapter
re-written to be correct.

> and have written the following code using TC 4.0.  Two things are wrong.
> First, control is not returned to the program immediately (i.e. not played
> asynchronously).  Second, the SndDisposeChannel call causes a bomb.
> Here's the code:

> 
> #include <SoundMgr.h>
> 
> void CSoundPane::DoClick(Point hitPt, short modifierKeys, long when)
> 
> {
> 	Handle	theSound;
> 	SndChannelPtr	chan;
> 	
> 	theSound = GetResource('snd ', 2214);
> 	chan = NULL;
> 	SndNewChannel(&chan, sampledSynth, initSRate22k, NULL);
			     ^^^^^^^^^^^^
	Pass Zero for the synthesizer:  Your 'snd ' resource probably
already specifies the sampledsynth, and when the second one gets installed
things go haywire.  This is the cause of your problems.  

        [stuff deleted]
		
> Thanks in advance,
> 
> Dave Chopp
> chopp@math.berkeley.edu


	No problem, I've been just recently been playing with this
myself.   

	Here's a question for the rest of you:  The Sound Manager document
lists a whole pile of limitations of the "current sound manager", but also
claims that it's from system version 6.0.2.  Have any of those problems been
fixed?

	--Chris
(kempkec@mist.cs.orst.edu, despite what my header might say)

Usual disclaimer applies, especially since my employer isn't who my mail header
says it is...