Pointing to a different structure

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5 total messages Started by Joe Gabriele Wed, 29 Mar 2006 11:47

Author: Joe Gabriele
Date: Wed, 29 Mar 2006 11:47

37 lines
1627 bytes

Hello,

I am new to C# and the C family in general, having used Delphi for many 
years. I am trying to figure out how to have an element of a buffer array 
use a different structure than it's original.

Example:
I have these two declarations


public class MyStructure
{
 public ushort element1;
 public ushort element2;
 public uint element3;

}

and

private BufferDescription d = new BufferDescription();

How would I now have d.Format point to MyStructure so that it uses the 
elements in MyStructure instead of the elements in d.Format?

I have tried:

MyStructure mns = new MyStructure();
d.Format = mns;

and get the error that I cannot implicitly convert one to the other.

What am I doing wrong?

Thanks.

Joe Gabriele

Re: Pointing to a different structure

Author: Marc Rohloff TeamB
Date: Thu, 30 Mar 2006 01:00

11 lines
1409 bytes

On Wed, 29 Mar 2006 06:47:15 -0500, Joe Gabriele wrote:

> private BufferDescription d = new BufferDescription();
> MyStructure mns = new MyStructure();
> d.Format = mns;
 
What is the definition for BufferDescription?

-- 
Marc Rohloff [TeamB]
marc rohloff -at- myrealbox -dot- com

Re: Pointing to a different structure

Author: Joe Gabriele
Date: Sat, 08 Apr 2006 00:50

29 lines
1823 bytes

Hello Marc,

Thanks for replying and sorry for my delay in responding as I was out of 
town.

BufferDescription is the DirectX Sound structure into which you would load a 
WAV file in order to play it. The Format element of BufferDescription is the 
WaveFormatEx structure. I would like to replace it with a 
WaveFormatExtensible structure instead.

I have seen C++ examples on how to do this but I have been unable to find C# 
examples.

Joe Gabriele

"Marc Rohloff [TeamB]" <"on request"> wrote in message 
news:1bw2ghnadam3m$.dlg@dlg.marcrohloff.com...
> On Wed, 29 Mar 2006 06:47:15 -0500, Joe Gabriele wrote:
>
>> private BufferDescription d = new BufferDescription();
>> MyStructure mns = new MyStructure();
>> d.Format = mns;
>
> What is the definition for BufferDescription?
>
> -- 
> Marc Rohloff [TeamB]
> marc rohloff -at- myrealbox -dot- com

Re: Pointing to a different structure

Author: Marc Rohloff TeamB
Date: Sat, 08 Apr 2006 13:28

13 lines
1746 bytes

On Fri, 7 Apr 2006 20:50:21 -0400, Joe Gabriele wrote:

> BufferDescription is the DirectX Sound structure into which you would load a 
> WAV file in order to play it. The Format element of BufferDescription is the 
> WaveFormatEx structure. I would like to replace it with a 
> WaveFormatExtensible structure instead.

Can you post the definition you're using or better yet a complete code
example. It might help if you post links to what you are trying to do.

-- 
Marc Rohloff [TeamB]
marc rohloff -at- myrealbox -dot- com

Re: Pointing to a different structure

Author: Joe Gabriele
Date: Thu, 13 Apr 2006 23:20

43 lines
2896 bytes

Hello Marc,

Thanks for your patience. I was trying to write an audio recorder and player 
that would create and play two language audio on a quad audio card. To that 
end, I was trying to replace the WaveFormatEx section of the DirectSound 
BufferDescription with a WaveFormatExtensible structure thinking I needed 3D 
sound (one language from the front speakers and the other from the back 
speakers).

After some more studying, it turns out I don't have to go this route. I was 
able accomplish my task with a single stereo channel (English audio on the 
right channel and French audio on the left channel) using Managed 
DirectSound. I simply record each language in stereo and play both files 
back simultaneously. On playback, the player configures the English stream 
(right channel) to have the left channel volume set to 0 whereas the French 
stream (left channel) has the right channel volume set to 0. The outcome is 
one language on one side and the second language on the other.

Again, thanks for your patience and help. I am closing this thread but will 
be opening another on text to speech.

Regards...

Joe Gabriele

"Marc Rohloff [TeamB]" <"on request"> wrote in message 
news:l9eids1x5dc6.dlg@dlg.marcrohloff.com...
> On Fri, 7 Apr 2006 20:50:21 -0400, Joe Gabriele wrote:
>
>> BufferDescription is the DirectX Sound structure into which you would 
>> load a
>> WAV file in order to play it. The Format element of BufferDescription is 
>> the
>> WaveFormatEx structure. I would like to replace it with a
>> WaveFormatExtensible structure instead.
>
> Can you post the definition you're using or better yet a complete code
> example. It might help if you post links to what you are trying to do.
>
> -- 
> Marc Rohloff [TeamB]
> marc rohloff -at- myrealbox -dot- com

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