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IDvdInfo2::GetAudioAttributes

 
Microsoft DirectShow 9.0

IDvdInfo2::GetAudioAttributes

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

Syntax

  HRESULT GetAudioAttributes(
  ULONG ulStream,
  DVD_AudioAttributes *pATR
);

Parameters

ulStream

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

pATR

[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.
E_POINTER Invalid argument.

Remarks

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.

Requirements

Header: Declared in Strmif.h; include Dshow.h.

Library: Use Strmiids.lib.

See Also