Ok, basically what I want to do is play a system sound every K seconds,
not a stream of any sort (hence the zero buffer size). However, I use
the SndStreamCreate function to spawn a callback function that is called
at a certain rate (see below). This plays the sound ok, but also a
rattling effect.
error = SndStreamCreate (&StreamRef, sndOutput,
8000, sndInt8,
sndMono, sound_callback,
(void *)&data, 0, false);
static Err sound_callback(void *userDataP, SndStreamRef stream, void
*bufferP, UInt32 frameCount)
{
SndPlaySystemSound (sndWarning);
return errNone;
}
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Robert
Scott
Sent: 19 April 2004 17:54
To: Palm Developer Forum
Subject: Re: SndStreamCreate
On Mon, 19 Apr 2004 16:56:51 +0100, "Jeff Leal"
<[EMAIL PROTECTED]> wrote:
>Hi,
>
> I want to make a normal sound every K seconds using SndDocmd.
However,
>even playing around with the sample rate for the callback and frequency
>of the sound, I still get this annoying shuffle sound every now and
>then. Anyone know how to get rid of that or do the above sensibly?
I don't know what you mean by the "shuffle" sound. I know that it is
possible using SndStreamCreate and SndStreamStart and the callback to
make a continuous sound. Make sure that your sound-generation software
is fast enough to keep up. If it falls behind in the callback then the
system may find itself at the end of a buffer without any new buffer
ready to continue the sound.
Robert Scott, Ypsilanti, MI
(reply through this forum, not by e-mailing me directly)
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