IDirectXVideoDecoderService::GetDecoderDeviceGuids Method (Windows)

IDirectXVideoDecoderService::GetDecoderDeviceGuids Method

Retrieves an array of GUIDs that identifies the decoder devices supported by the graphics hardware.

HRESULT GetDecoderDeviceGuids(
  [out]  UINT *Count,
  [out]  GUID **pGuids
);

Count [out]: Receives the number of GUIDs.
pGuids [out]: Receives an array of GUIDs. The size of the array is retrieved in the Count parameter. The method allocates the memory for the array. The caller must free the memory by calling CoTaskMemFree.

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code	Description
S_OK	The method succeeded.
D3DERR_INVALIDCALL	Error from the Direct3D device.

The following decoder GUIDs are defined. Some of these GUIDs have alternate names, shown in parentheses.

GUID	Description
DXVA2_ModeH264_A (DXVA2_ModeH264_MoComp_NoFGT)	H.264 motion compensation (MoComp), no film grain technology (FGT).
DXVA2_ModeH264_B (DXVA2_ModeH264_MoComp_FGT)	H.264 MoComp, FGT.
DXVA2_ModeH264_C (DXVA2_ModeH264_IDCT_NoFGT)	H.264 inverse discrete cosine transform (IDCT), no FGT.
DXVA2_ModeH264_D (DXVA2_ModeH264_IDCT_FGT)	H.264 IDCT, FGT.
DXVA2_ModeH264_E (DXVA2_ModeH264_VLD_NoFGT)	H.264 VLD, no FGT.
DXVA2_ModeH264_F (DXVA2_ModeH264_VLD_FGT)	H.264 variable-length decoder (VLD), FGT.
DXVA2_ModeMPEG2_IDCT	MPEG-2 IDCT.
DXVA2_ModeMPEG2_MoComp	MPEG-2 MoComp.
DXVA2_ModeMPEG2_VLD	MPEG-2 VLD.
DXVA2_ModeVC1_A (DXVA2_ModeVC1_PostProc)	VC-1 post processing.
DXVA2_ModeVC1_B (DXVA2_ModeVC1_MoComp)	VC-1 MoComp.
DXVA2_ModeVC1_C (DXVA2_ModeVC1_IDCT)	VC-1 IDCT.
DXVA2_ModeVC1_D (DXVA2_ModeVC1_VLD)	VC-1 VLD.
DXVA2_ModeWMV8_A (DXVA2_ModeWMV8_PostProc)	Windows Media Video 8 post processing.
DXVA2_ModeWMV8_B (DXVA2_ModeWMV8_MoComp)	Windows Media Video 8 MoComp.
DXVA2_ModeWMV9_A (DXVA2_ModeWMV9_PostProc)	Windows Media Video 9 post processing.
DXVA2_ModeWMV9_B (DXVA2_ModeWMV9_MoComp)	Windows Media Video 9 MoComp.
DXVA2_ModeWMV9_C (DXVA2_ModeWMV9_IDCT)	Windows Media Video 9 IDCT.