[wdmaudiodev] 答复: Re: MSVAD BUG?
- From: "Levin" <llm@xxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Fri, 28 Jan 2005 17:43:11 +0800
Hi, Richard Fricks
Thank you very much.
By the way, I built a recording device insert some code in function
CopyFrom (basedma.cpp). The default sample rate of the record device is
44100Hz. How can I change it to 22050Hz?
Thanks & Regarts.
Levin
>
> There is bug in MSVAD in this regard. The problem involves the
following
> code in savedata.cpp:
>
> #ifndef USE_OBSOLETE_FUNCS
> for (int i = 0; i < MAX_WORKER_ITEM_COUNT; i++)
> {
>
> if (m_pWorkItems[i].WorkItem!=NULL)
> {
> IoFreeWorkItem(m_pWorkItems[i].WorkItem);
> m_pWorkItems[i].WorkItem = NULL;
> }
> }
> #endif
>
>
> Change the #ifndef to #ifdef. So the correct line would read:
> #ifdef USE_OBSOLETE_FUNCS
>
> That should solve the problem.
>
> -Rich
>
> -----Original Message-----
> From: wdmaudiodev-bounce@xxxxxxxxxxxxx
> [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of
> dprado@xxxxxxxxxxxxxx
> Sent: Tuesday, January 25, 2005 10:29 AM
> To: wdmaudiodev@xxxxxxxxxxxxx
> Subject: [wdmaudiodev] Re: MSVAD BUG?
>
> I have observed the same behavior on XP. I noticed that each time a
> sound is
> "played" though the msvad device it writes a new file called
> (stream_XX.wav )
> where XX is a sequential number. Only the first file written
> (stream_0.wav ,
> related to the first sound played through the device) is a valid wav
> file. all
> other files that it writes are short files that do not have valid wav
> audio.
>
> Dimitri
> > >I just got the MSVAD drivers to compile under windows 2000, but
when
> I use
> > >
> > >the "simple" and "multistream" drivers (select it as the default
wave
> > >
> > >device), all I get are 44 byte wave files labeled "STREAM_1.wav,
> > >
> > >STREAM_2.wav, and so on written to my C drive. What's more, the
files
> are
> > >
> > >all identical.
> > >
> > >
> > >
> > >I was under the impression that these virtual audio drivers allowed
> for
> > >
> > >writing audio data outputted by all running programs (using
waveOut,
> or
> > >
> > >directsound) to a single wave file as opposed to an actual sound
card
> > (which
> > >
> > >presumably can be easily modified to route the audio stream over
the
> > >
> > >internet)
> > >
> > >
> > >
> > >Does anyone understand what exactly the MSVAD Audio drivers do out
of
> the
> > >
> > >box?
> > >
>
>
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