Microsoft DirectX 9.0


The get_Volume method retrieves the volume (amplitude) of the audio signal.


HRESULT get_Volume(
  long *plVolume



[out] Pointer to a variable that receive the volume. Divide by 100 to get equivalent decibel value. For example, –10,000 is –100 dB.

Return Values

Returns an HRESULT value. Possible values include the following.

Value Description
E_NOTIMPL The filter graph does not contain an audio renderer filter. (Possibly the source does not contain an audio stream.)
E_POINTER Null pointer argument.
S_OK Success.

See Also