IDvdInfo2::GetAudioAttributes method (strmif.h)
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The GetAudioAttributes method retrieves the attributes of the specified audio stream in the current title or menu.
Syntax
HRESULT GetAudioAttributes(
[in] ULONG ulStream,
[out] DVD_AudioAttributes *pATR
);
Parameters
[in] ulStream
Variable of type ULONG specifying the audio stream whose attributes you wish to query. See Remarks.
[out] pATR
Pointer to a DVD_AudioAttributes structure that is filled with the attributes of the specified audio stream.
Return value
Returns one of the following HRESULT values.
| Return code | Description |
|---|---|
|
Success. |
|
The DVD Navigator is not initialized. |
|
The stream's audio attributes are not available. |
|
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
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Target Platform | Windows |
| Header | strmif.h (include Dshow.h) |
| Library | Strmiids.lib |