IMFAudioStreamVolume::SetAllVolumes method (mfidl.h)

Sets the individual volume levels for all of the channels in the audio stream.

Syntax

HRESULT SetAllVolumes(
  [in] UINT32      dwCount,
  [in] const float *pfVolumes
);

Parameters

[in] dwCount

Number of elements in the pfVolumes array. The value must equal the number of channels. To get the number of channels, call IMFAudioStreamVolume::GetChannelCount.

[in] pfVolumes

Address of an array of size dwCount, allocated by the caller. The array specifies the volume levels for all of the channels. Before calling the method, set each element of the array to the desired volume level for the channel.

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Requirements

See also

IMFAudioStreamVolume

Streaming Audio Renderer