IMFAudioStreamVolume::GetAllVolumes method (mfidl.h)
Retrieves the volume levels for all of the channels in the audio stream.
Syntax
HRESULT GetAllVolumes(
[in] UINT32 dwCount,
[out] 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.
[out] pfVolumes
Address of an array of size dwCount, allocated by the caller. The method fills the array with the volume level for each channel in the stream.
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] |
| Minimum supported server | Windows Server 2008 [desktop apps only] |
| Target Platform | Windows |
| Header | mfidl.h |
| Library | Mfuuid.lib |