Re: Words for accessing the sound card

From: Bruno Gauthier <Bruno.GAUTHIER5_at_wanadoo.fr>
Date: Sun, 28 May 2000 22:57:47 +0200

Hello,
Give a look at the web page of Mike Kemper
http://216.132.198.179/
They are a sound class for SwiftForth

Bruno Gauthier

----- Original Message -----
From: "Ed Borasky" <znmeb_at_teleport.com>
To: <sftalk_at_forth.com>
Sent: Sunday, May 28, 2000 10:45 PM
Subject: [sftalk] Words for accessing the sound card

> I'm starting a Forth project which involves generating sounds. I want to
be
> able to play sounds from a SwiftForth program without having to write out
> files to disk in some format, such as the standard Windows "WAV" format.
Are
> there any words available for this, or do I have to do all the digging
into
> the Windows architecture myself? I have access to some C and C++ code that
> does this, but there is little documentation. I also have the GNU Compiler
> Collection for Windows, so if I have to link to a DLL in C or C++, I can
> certainly do that. And I can always write "WAV" format out to a pipe (if
> such things exist in Windows 98 :-) to be played by a file player. But I'd
> much rather do the whole thing in SwiftForth; the sound generation
> algorithms I'm going to be using work fine in real time, given a fast
enough
> processor (400 MHz currently) and enough memory (192 MB currently).
>
>
> _______________________________________________
> Sftalk mailing list Sftalk_at_forth.com
> Visit Sftalk on the web at http://www.forthinc.com/mailman/listinfo/sftalk

Message-ID: <001501bfc917$c1326780$34f25f18_at_cfl.rr.com>
From: "Michael Kemper" <mikek_at_cfl.rr.com>
To: "SFTALK" <talk_at_forth.com>
Date: Sun, 28 May 2000 22:44:04 -0400
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Subject: [sftalk] TFC Question
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It seems that the objects can be statically instantiated, but cannot be =
dynamically instantiated at runtime. Is that correct?
Is this because the class system cannot parse the methods at run time?

What I'm trying to do is something like:

ObjType SUBCLASS Foo
...
END-CLASS

ObjType SUBCLASS Bar
: Constructor
Foo BUILDS FooInstance ;

    : SomeMethod =20
        FooInstance -> SomeOtherMethod ;
      =20
    : Destructor
        FooInstance DESTROY ;
END-CLASS

The only way I can seem to accomplish what I'm after is to have both =
objects pre-built, then have the code that invokes the Bar class also =
invoke the Foo class then manually pass the handle of Foo to Bar, and it =
tends to get a lot messier that it needs to be. =20

I'm not sure that my point is clear. Hopefully it is.=20

Mike

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3D"text/html; charset=3Diso-8859-1" =
http-equiv=3DContent-Type>
<META content=3D"MSHTML 5.00.2614.3500" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>It seems that the objects can be =
statically=20
instantiated, but cannot be dynamically instantiated at =
runtime.  Is=20
that correct?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Is this because the class system cannot =
parse the=20
methods at run time?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>What I'm trying to do is something=20
like:</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>ObjType SUBCLASS Foo</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>    ...</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>END-CLASS</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>ObjType SUBCLASS Bar</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>    : =
Constructor</FONT></DIV>
<DIV><FONT face=3DArial =
size=3D2>        Foo=20
BUILDS FooInstance </FONT><FONT face=3DArial =
size=3D2>;</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>    : =
SomeMethod   =20
</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>        =
FooInstance=20
-> SomeOtherMethod</FONT><FONT face=3DArial size=3D2>=20
;</FONT></DIV>       </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>    : =
Destructor</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>        =
FooInstance=20
DESTROY ;</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>END-CLASS</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>The only way I can seem to accomplish =
what I'm=20
after is to have both objects pre-built, then have the code =
that invokes=20
the Bar class also invoke the Foo class then manually pass the =
handle of=20
Foo to Bar, and it tends to get a lot messier that it needs to be.  =

</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>I'm not sure that my point is =
clear. =20
Hopefully it is. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>    =
Mike</FONT></DIV></BODY></HTML>

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Received on Sun May 28 2000 - 14:03:38 PDT

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Re: Words for accessing the sound card