What I'm doing wrong?
....
hr = pM->BindToObject(0, 0, __uuidof(IBaseFilter), (void**)&pFilt);
CComPtr<IKsControl> ctrl;
hr = pFilt->QueryInterface(__uuidof(IKsControl), (void **)&ctrl);
KSNODEPROPERTY_AUDIO_CHANNEL cmd;
ZeroMemory(&cmd, sizeof(cmd));
cmd.NodeProperty.Property.Set = KSPROPSETID_Audio;
cmd.NodeProperty.Property.Id = KSPROPERTY_AUDIO_VOLUMELEVEL;
cmd.NodeProperty.Property.Flags = KSPROPERTY_TYPE_BASICSUPPORT |
KSPROPERTY_TYPE_TOPOLOGY;
cmd.NodeProperty.NodeId = 1;
cmd.Channel = 0;
cmd.Reserved = 0;
HRESULT result = ctrl->KsProperty(&cmd.NodeProperty.Property, sizeof(cmd),
&desc, sizeof(desc), &sz);
This code returns 'Incorrect function'. NodeId is '1', because in the
driver this is KSNODETYPE_VOLUME. If I change it for example on '0' - then
error code becomes 'Element not found'.
******************
WDMAUDIODEV addresses:
Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx
URL to WDMAUDIODEV page:
http://www.wdmaudiodev.com/
