| Microsoft DirectX 8.1 (C++) |
The GetDecoderCaps method informs the application whether the decoder supports the Video Mixing Renderer.
Syntax
HRESULT GetDecoderCaps(
DWORD dwCapIndex,
DWORD* lpdwCap
);
Parameters
dwCapIndex
[in] Specifies the capability being queried for as a DWORD.
| Value | Description |
| AM_QUERY_DECODER_VMR_SUPPORT (0x00000001) | Query for support of the Video Mixing Renderer filter. |
| AM_QUERY_DECODER_DXVA_1_SUPPORT (0x00000002) | Query for support of DirectX Video Acceleration. |
| AM_QUERY_DECODER_DVD_SUPPORT (0x00000003) | Query for support of DVD video streams. |
| AM_QUERY_DECODER_ATSC_SD_SUPPORT (0x00000004) | Query for support of standard definition ATSC video streams. |
| AM_QUERY_DECODER_ATSC_HD_SUPPORT (0x00000005) | Query for support of high definition ATSC video streams. |
lpdwCap
[out] Specifies a pointer to a DWORD to receive the desired capability.
| Value | Description |
| DECODER_CAP_NOTSUPPORTED (0x00000000) | The capability specified by dwCapIndex is not supported. |
| DECODER_CAP_SUPPORTED (0x00000001) | The capability specified by dwCapIndex is supported. |
Return Values
When this method succeeds, it returns S_OK. Otherwise it returns an HRESULT error code.
Remarks
The DVD Graph Builder uses this interface in the manner described above when building DVD graphs. If the decoder does not support the Video Mixing Renderer filter, then the DVD Graph Builder uses the Overlay Mixer filter instead.
See Also