IDvdInfo2::GetCurrentAudio method (strmif.h)

Article
02/22/2024

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 GetCurrentAudio method retrieves the number of available audio streams and the number of the currently selected audio stream.

Syntax

HRESULT GetCurrentAudio(
  [out] ULONG *pulStreamsAvailable,
  [out] ULONG *pulCurrentStream
);

Parameters

[out] pulStreamsAvailable

Receives the number of available audio streams.

[out] pulCurrentStream

Receives the currently selected audio stream number in the current title.

Return value

Returns one of the following HRESULT values.

Return code	Description
S_OK	Success.
E_POINTER	Input arguments are invalid.
VFW_E_DVD_INVALIDDOMAIN	The DVD Navigator is not initialized or not in a valid domain.

Remarks

To get the available audio languages on the disc, call GetCurrentAudio and then call GetAudioLanguage for each stream, starting from zero through (pulStreamsAvailable - 1) to get the language content.

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