some question for Audio capture in the TESTCAP

Hi All

my hardwave can capture sound form microphome to PCM Format,
I need to add audio support in the Video Capture Driver.


1 how to show a graph like *microphome-->Capture in the Graph Edit??
just like TvAudio Filter!! Can I write a custom Filter like this and how
to do thos ?? or I can define a TOPOLOGY for it??

2 should I need to support Audio propertys ?? which one I need to support ??
KSPROPERTY_AUDDECOUT_MODES or KSPROPERTY_AUDDECOUT_CUR_MODE??


3 when I use this sample code
CComPtr<IBaseFilter> ppf;
hr = pBuilder->SetOutputFileName(&MEDIASUBTYPE_PCM,
L"C:\\Example.Wav", &ppf, NULL);

It retrun error code 0x80040154L REGDB_E_CLASSNOTREG,how do I Slove this??

thanks a lot

paullee
Tue Jul 27 08:02:08 CDT 2004

> Hi All
>
> my hardwave can capture sound form microphome to PCM Format,
> I need to add audio support in the Video Capture Driver.
>
> 1 how to show a graph like *microphome-->Capture in the Graph Edit??
> just like TvAudio Filter!! Can I write a custom Filter like this and how
> to do thos ?? or I can define a TOPOLOGY for it??
>
> 2 should I need to support Audio propertys ?? which one I need to support ??
> KSPROPERTY_AUDDECOUT_MODES or KSPROPERTY_AUDDECOUT_CUR_MODE??

for the Video,it need to support KSPROPERTY_CONNECTION_ALLOCATORFRAMING
how about the audio ?? What property is we need to support at least??

> 3 when I use this sample code
> CComPtr<IBaseFilter> ppf;
> hr = pBuilder->SetOutputFileName(&MEDIASUBTYPE_PCM,
> L"C:\\Example.Wav", &ppf, NULL);
>
> It retrun error code 0x80040154L REGDB_E_CLASSNOTREG,how do I Slove this??

answer by myslef^^
MSDN say SetOutputFileName only MEDIASUBTYPE_Avi