| Re: playing sound files [message #15300] |
Mon, 03 May 1999 00:00 |
menakkis
Messages: 37
Registered: June 1998
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Member |
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Jason Jonikas <jjonikas@bos.fti-net.com> wrote:
> Does any one know a good way of playing sounds in IDL other than
> spawning to the windows wav player. I had been toying with the idea of
> reading in all of the wav files at the begining of the program and then
> writing an IDL wav player but I cant find a good description of the wav
> file format. Any ideas would be a great help.
Hi Jason,
I could send you a really trivial little IDL / C-external routine to play
.wav files if you like. (Email me at p.mason@syd.dem.csiro.au if you want
it.) The routine calls the Win32 multimedia function PlaySound() directly, so
it's more to-the-point than spawning a separate media player program. But I
get the impression, somehow, that this is not quite what you're looking for.
After all it's still going to have to open and load a .wav file before
playing it, so it's not going to be as quick as these things can get. If
response time is an issue for you, the simplest solution I can think of
(assuming you have a fixed set of .WAV files) would be to bung the .wav files
you want to play straight into your call-external DLL as binary resources
(this is easy). With hardly any extra effort you could get PlaySound() to
play these resources - bound to be quicker than separate .wav files. The
"real thing", though, would involve pre-loading the .wav files into arrays
(in memory), and using the lower-level multimedia routines.
I hope this helps,
Peter Mason
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