ISpatialAudioObjectRenderStreamForHrtf::ActivateSpatialAudioObjectForHrtf method (spatialaudiohrtf.h)

Activates an ISpatialAudioObjectForHrtf for audio rendering.


HRESULT ActivateSpatialAudioObjectForHrtf(
  [in]  AudioObjectType            type,
  [out] ISpatialAudioObjectForHrtf **audioObject


[in] type

The type of audio object to activate. For dynamic audio objects, this value must be AudioObjectType_Dynamic. For static audio objects, specify one of the static audio channel values from the enumeration. Specifying AudioObjectType_None will produce an audio object that is not spatialized.

[out] audioObject

Receives a pointer to the activated interface.

Return value

If the method succeeds, it returns S_OK. If it fails, possible return codes include, but are not limited to, the values shown in the following table.

Return code Description
The system has reached the maximum number of simultaneous audio objects.
The ISpatialAudioClient associated with the spatial audio stream has been destroyed.
The audio endpoint device has been unplugged, or the audio hardware or associated hardware resources have been reconfigured, disabled, removed, or otherwise made unavailable for use.
An internal error has occurred.
The media associated with the spatial audio stream uses an unsupported format.


A dynamic ISpatialAudioObjectForHrtf is one that was activated by setting the type parameter to the ActivateSpatialAudioObjectForHrtf method to AudioObjectType_Dynamic. The client has a limit of the maximum number of dynamic spatial audio objects that can be activated at one time. After the limit has been reached, attempting to activate additional audio objects will result in this method returning an SPTLAUDCLNT_E_NO_MORE_OBJECTS error. To avoid this, call Release on each dynamic ISpatialAudioObjectForHrtf after it is no longer being used to free up the resource so that it can be reallocated. See ISpatialAudioObjectgBase::IsActive and ISpatialAudioObjectgBase::SetEndOfStream for more information on the managing the lifetime of spatial audio objects.


Target Platform Windows
Header spatialaudiohrtf.h

See also