Microsoft DirectX 9.0


The GetAudioAttributes method retrieves the attributes of the specified audio stream in the current title or menu.


HRESULT GetAudioAttributes(
  ULONG ulStream,
  DVD_AudioAttributes *pATR



[in] Variable of type ULONG specifying the audio stream whose attributes you wish to query. See Remarks.


[out] Pointer to a DVD_AudioAttributes structure that is filled with the attributes of the specified audio stream.

Return Values

Returns one of the following HRESULT values.

Return code Description
S_OK Success.
E_UNEXPECTED The DVD Navigator is not initialized.
VFW_E_DVD_NO_ATTRIBUTES The stream's audio attributes are not available for some reason.
E_POINTER Invalid argument.


ulStream can be any index number from 0 through 7 or one of the following values:

Value Description
DVD_DEFAULT_AUDIO_STREAM To query for the attributes of the default audio stream.
DVD_STREAM_DATA_CURRENT To query the current stream.
DVD_STREAM_DATA_VMGM To query for the VMGM's audio attributes.
DVD_STREAM_DATA_VTSM To query for the VTSM's audio attributes.

The use of this method is demonstrated in the DVDSample application in CDvdCore::GetAudioAttributes() and CAudioLangDlg::GetAudioLang.

See Also