Article View: borland.public.csharpbuilder.multimedia
Article #10Playing Audio from a memory array
From: Joe Gabriele
Date: Sat, 22 Apr 2006 03:47
Date: Sat, 22 Apr 2006 03:47
37 lines
2125 bytes
2125 bytes
Hi,
Is there a way to use DirectSound to create a SecondaryBuffer from a WAV
file stored in memory?
I can create a wave file, write it to the hard drive and then play it back
with DirectSound by first creating the buffer : sound = new
SecondaryBuffer("\\test.wav",bDesc,sndDevice) and then using the sound.Play
method send it to the sound card.
What I want to do is create the wave file in memory and then create the
SecondaryBuffer from that memory stream. I can successfully create the wave
file in memory as follows:
MemoryStream stream = new MemoryStream();
I then use the stream.Write method to load the various part of the wave file
(header info and data);
I finally transfer the stream to a byte array (though I don't know if this
is necessary):
byte[] snd = stream.GetBuffer();
When I try to create the SecondaryBuffer to play the sound,
sound = new SecondaryBuffer(snd,dSound) or sound = new
SecondaryBuffer(snd,fileSize,dSound);
it crashes. I know that the array snd has all the proper information as I
can view it as it's being populated.
Any help would be greatly appreciated.
Thanks.
Joe Gabriele
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