VMR9AlphaBitmapFlags enumeration (vmr9.h)

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 VMR9AlphaBitmapFlags enumeration type defines the possible values for the dwFlags member of the VMR9AlphaBitmap structure.

Syntax

typedef enum __MIDL___MIDL_itf_vmr9_0000_0006_0001 {
  VMR9AlphaBitmap_Disable = 0x1,
  VMR9AlphaBitmap_hDC = 0x2,
  VMR9AlphaBitmap_EntireDDS = 0x4,
  VMR9AlphaBitmap_SrcColorKey = 0x8,
  VMR9AlphaBitmap_SrcRect = 0x10,
  VMR9AlphaBitmap_FilterMode = 0x20
} VMR9AlphaBitmapFlags;

Constants

VMR9AlphaBitmap_Disable Value: 0x1 Disable the alpha bitmap. This flag cannot be combined with any other flags.
VMR9AlphaBitmap_hDC Value: 0x2 The bitmap is specified as a GDI device context (HDC) in the hdc member of the VMR9AlphaBitmap structure. If this flag is not present, the bitmap is specified as a Direct3D IDirect3DSurface9 pointer in the pDDS member of the structure.
VMR9AlphaBitmap_EntireDDS Value: 0x4 Use the entire Direct3D surface. The rSrc member of the VMR9AlphaBitmap structure is ignored. This flag cannot be combined with the VMR9AlphaBitmap_hDC flag.
VMR9AlphaBitmap_SrcColorKey Value: 0x8 Indicates that the srcClrKey member is valid and should be used when blending. This flag cannot be used with a Direct3D surface that contains per-pixel alpha (D3DFMT_A8R8G8B8 format).
VMR9AlphaBitmap_SrcRect Value: 0x10 Indicates that the rSrc member is valid and specifies a sub-rectangle of the original image to be blended. This flag is only valid for the IVMRMixerBitmap9::UpdateAlphaBitmapParameters method.
VMR9AlphaBitmap_FilterMode Value: 0x20 Indicates that the dwFilterMode member is valid and should be used to override the VMR filter's default filtering method.

Requirements

Requirement	Value
Header	vmr9.h

See also

DirectShow Enumerated Types