Re: WMA Decoder In Application
From: Dale Ziebarth (dziebarth_at_hotmail.com)
Date: 10/29/04
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Date: Fri, 29 Oct 2004 12:43:06 -0500
Since the UAM is not supported by Win CE 5.0 we figured that implimenting it
for a Win CE 4.2 project left us a piece of code that can't be used in the
future. Why put extra effort into a driver that will be abandoned if you
can work around the problem in another way?
My understanding is that DirectShow / DirectSound is a COM object which is
not directly supported under the .Net Compact Framework. It brings with it
lots of stuff that we don't need (we need playback only). As an alternative
I am asking if we can decode the WMA file to a data stream that the waveform
audio driver can accept in the application rather than going through the
mess of COM objects, etc.
Since WMA files are much smaller than WAV or MP3 files we wanted to use that
format to save space.
"Dean Ramsier" <ramsiernospam@nospam.com> wrote in message
news:uOJDBidvEHA.1988@TK2MSFTNGP12.phx.gbl...
> Huh? The UAM/DirectSound piece you mentioned is what actually renders the
> audio out onto the system audio channel. It can't be bypassed, it
controls
> the audio hardware. There's nothing extra here.
>
> What are you trying to eliminate?
>
> --
> Dean Ramsier - eMVP
>
>
> "Dale Ziebarth" <dziebarth@hotmail.com> wrote in message
> news:ODE3C9cvEHA.1976@TK2MSFTNGP09.phx.gbl...
> > We are using Win CE 4.2 .Net and a Managed application to play WMA
files.
> I
> > know that the normal way to do this is to use the DirectSound / UAM
audio
> > driver route. Is there another way to do the decode of the WMA file in
> the
> > application so that we can avoid the extra UAM driver code?
> >
> >
>
>
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