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IDvdInfo2::IsAudioStreamEnabled

  • 아티클
 
Microsoft DirectShow 9.0

IDvdInfo2::IsAudioStreamEnabled

The IsAudioStreamEnabled method determines if the specified audio stream is enabled in the current title.

Syntax

  HRESULT IsAudioStreamEnabled(
  ULONG ulStreamNum,
  BOOL *pbEnabled
);

Parameters

ulStreamNum

[in] Audio stream number to test.

pbEnabled

[out] Pointer to a variable of type BOOL that receives a value of TRUE if the audio stream is enabled, or FALSE otherwise.

Return Values

Returns one of the following HRESULT values.

Return code Description
S_OK Success.
E_INVALIDARG Invalid argument.
E_UNEXPECTED The DVD Navigator is not initialized.

Remarks

A DVD can have up to eight separate audio streams, although typically not all the streams will be enabled for each title. Use IsAudioStreamEnabled to determine whether a particular stream is enabled for the current title, and then call IDvdControl2::SelectAudioStream to select one of the enabled streams.

Requirements

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

Library: Use Strmiids.lib.

See Also