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IDvdInfo2::GetDiscID method

The GetDiscID method retrieves a system-generated 64-bit identification number for the specified DVD.

Syntax


HRESULT GetDiscID(
  [in]   LPCWSTR pszwPath,
  [out]  ULONGLONG *pullDiscID
);

Parameters

pszwPath [in]

Path of the volume to use for the disc ID. Specify NULL to use the current or default DVD volume.

pullDiscID [out]

Receives the 64-bit disc ID.

Return value

Returns one of the following HRESULT values.

Return codeDescription
S_OK

Success.

E_INVALIDARG

Invalid argument.

E_UNEXPECTED

The DVD Navigator is not initialized.

VFW_E_DVD_INVALID_DISC

The specified path is not a valid DVD disc.

 

Remarks

The DVD Navigator calculates an identifier ID based on file sizes, dates, and other information, and not the BCA (burst cutting area) value. This number is guaranteed to be the same each time the disc is played. The ID applies to all replicated copies of a disc. In other words, all copies of a specific movie will have the same ID. The odds that two separate titles will have the same ID is sufficiently remote that this ID can be considered "unique" for all practical purposes.

Requirements

Minimum supported client

Windows XP [desktop apps only]

Minimum supported server

Windows Server 2003 [desktop apps only]

Header

Strmif.h (include Dshow.h)

Library

Strmiids.lib

See also

DVD Applications
Error and Success Codes
IDvdInfo2 Interface

 

 

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