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DD_DXAPI_FLIP_VP control code

  • Article

A video capture driver passes DD_DXAPI_FLIP_VP in the dwFunctionNum parameter of the DxApi function to cause the hardware video port to write data to a different surface.

Input Parameters

  • lpvInBuffer
    Pointer to a DDFLIPVIDEOPORT structure that contains the handle information required to flip the hardware video port.

Output Parameters

  • lpvOutBuffer
    Pointer to a DWORD that contains the DirectDraw return value.

Remarks

The dwFlags member of the DDFLIPVIDEOPORT structure should contain DDVPFLIP_VIDEO or DDVPFLIP_VBI to indicate whether the video or the VBI region of the video signal should be flipped. To flip both regions, this function identifier should be called twice.

This function identifier cannot be called while autoflipping.

This function identifier can be called at raised IRQL.

Requirements

Header

 Ddkmapi.h (include Ddkmapi.h)

See also

DDFLIPVIDEOPORT