[wdmaudiodev] what is mean about digital out?
- From: "Eric Ahn" <byungwook.ahn@xxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Thu, 3 Jul 2008 17:07:04 +0900
There are some status of digital audio output.
pcm -> optical out -> external decoder -> speaker
You can use a spdif wrapper of pcm or pcm audio data.
optical out port has 3 types.
-SPDIF LINEOUT
-LINEINE(SPDIF OUT)
-Headphone(SPDIF OUT).
Then, It must select "digital out" check to output a digital audio.
.
I am going to check endpint in windows xp/sp2.
But, there is no way to check a endpoint.
Then, I surveyed KSP_PIN property.
KSPROPSETID_Topology, KSPROPSETID_Pin has a topology and pin information.
It can use to check like this "DeviceIoControl( handle, IOCTL_KS_PROPERTY,
&ksPProp.Property,..".
But, can't find "digital out" check status.
I think that "digital out" check status does not related to topology
filters.
Anyone have a idea for endpoint status?
Eric.
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