[wdmaudiodev] Re: Building an USB audio interface with a PIC18F4550

  • From: Tim Roberts <timr@xxxxxxxxx>
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Wed, 28 Mar 2007 14:31:58 -0700

Elios Elios Elios wrote:
>
>
> At the end we are making our USB Device an USB Audio Class
> Compliant ... but now we have some questions...
>
> - Can I use my USB Device (USB Audio Class Compliant) with winmm.dll?
> If not... Which DLL should I use for that porpouse?
>
> I've controlled my soundcard with this DLL, but I don't know if I
> could access to the driver USBAudio.sys... In fact, I only know
> "winmm.dll", but I expect that WDM Audio Drivers are a lot of things...
>

You can use the waveOut APIs to control any audio device.  That's the
whole purpose for the routines in winmm.dll; they let you write
applications that use audio without having to know the gritty details of
the device.  The operating system provides an "adapter" to talk to
whatever kind of audio driver you actually have.

-- 
Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.

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