IDvdInfo2::GetAllGPRMs 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 GetAllGPRMs method retrieves the current contents of all general parameter registers (GPRMs).

Syntax

HRESULT GetAllGPRMs(
  [out] GPRMARRAY *pRegisterArray
);

Parameters

[out] pRegisterArray

Pointer to an array of type GPRMARRAY that receives all 16 current GPRM values.

Return value

Returns one of the following HRESULT values.

Return code	Description
S_OK	Success.
E_POINTER	Invalid argument.

Remarks

GPRMs are 16-bit registers that each disc can use in unique ways for temporary data storage.

Note A player application using the DVD Navigator filter does not need to access these registers for any Annex J playback or navigation control. This method is provided for player applications implementing advanced functionality. Do not attempt to modify the GPRMs directly unless you have a thorough knowledge of the DVD specification, and the ways in which the GPRMs are used on the particular discs to be played.

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