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Register todayIDirectXVideoDecoderService::GetDecoderDeviceGuids method (dxva2api.h)
Retrieves an array of GUIDs that identifies the decoder devices supported by the graphics hardware.
HRESULT GetDecoderDeviceGuids(
[out] UINT *pCount,
[out] GUID **pGuids
);
[out] pCount
Receives the number of GUIDs.
[out] pGuids
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 |
|---|---|
|
The method succeeded. |
|
Error from the Direct3D device. |
|
If the Microsoft Basic Display Adapter is being used or the Direct3D 11 device type is the reference rasterizer. These devices do not support video decoders. |
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_ModeHEVC_VLD_Main | H.265 / HEVC Main profile |
| DXVA2_ModeHEVC_VLD_Main10 | H.265 / HEVC Main 10 profile |
| 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. |
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] |
| Minimum supported server | Windows Server 2008 [desktop apps only] |
| Target Platform | Windows |
| Header | dxva2api.h |