IDirectDrawVideo::GetSurfaceType
| Microsoft DirectShow 9.0 |
IDirectDrawVideo::GetSurfaceType
The GetSurfaceType method retrieves the actual surface type as a DirectShow DirectDraw Surface (AMDDS) definition.
Syntax
HRESULT GetSurfaceType( DWORD *pSurfaceType );
Parameters
pSurfaceType
Pointer to variable that receives a bitwise-OR of one or more of the following values.
| Value | Description |
| AMDDS_NONE | No use for DCI/DirectDraw. |
| AMDDS_DCIPS | Use DCI primary surface. |
| AMDDS_PS | Use DirectDraw primary surface. |
| AMDDS_RGBOVR | RGB overlay surfaces. |
| AMDDS_YUVOVR | YUV overlay surfaces. |
| AMDDS_RGBOFF | RGB off-screen surfaces. |
| AMDDS_YUVOFF | YUV off-screen surfaces. |
| AMDDS_RGBFLP | RGB flipping surfaces. |
| AMDDS_YUVFLP | YUV flipping surfaces. |
| AMDDS_ALL | All the previous flags. |
| AMDDS_DEFAULT | Use all available surfaces. |
| AMDDS_YUV | (AMDDS_YUVOFF | AMDDS_YUVOVR | AMDDS_YUVFLP). |
| AMDDS_RGB | (AMDDS_RGBOFF | AMDDS_RGBOVR | AMDDS_RGBFLP). |
| AMDDS_PRIMARY | (AMDDS_DCIPS | AMDDS_PS). |
Return Values
Returns an HRESULT value.
Remarks
It is not always easy to discover which kind of surface is being used by looking at a DDSURFACEDESC structure. Therefore, an application can call GetSurfaceType to retrieve the surface type. The field will be filled in with one bit setting selected from the preceding list of AMDDS definitions.
Requirements
Header: Declared in Amvideo.h; include Dshow.h.
Library: Use Strmiids.lib.
See Also