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DD_VIDEOPORTCALLBACKS structure

The DD_VIDEOPORTCALLBACKS structure contains entry pointers to Microsoft DirectDraw video port extensions (VPE) callback functions that a device driver supports.

Syntax


typedef struct DD_VIDEOPORTCALLBACKS {
  DWORD                          dwSize;
  DWORD                          dwFlags;
  PDD_VPORTCB_CANCREATEVIDEOPORT CanCreateVideoPort;
  PDD_VPORTCB_CREATEVIDEOPORT    CreateVideoPort;
  PDD_VPORTCB_FLIP               FlipVideoPort;
  PDD_VPORTCB_GETBANDWIDTH       GetVideoPortBandwidth;
  PDD_VPORTCB_GETINPUTFORMATS    GetVideoPortInputFormats;
  PDD_VPORTCB_GETOUTPUTFORMATS   GetVideoPortOutputFormats;
  LPVOID                         lpReserved1;
  PDD_VPORTCB_GETFIELD           GetVideoPortField;
  PDD_VPORTCB_GETLINE            GetVideoPortLine;
  PDD_VPORTCB_GETVPORTCONNECT    GetVideoPortConnectInfo;
  PDD_VPORTCB_DESTROYVPORT       DestroyVideoPort;
  PDD_VPORTCB_GETFLIPSTATUS      GetVideoPortFlipStatus;
  PDD_VPORTCB_UPDATE             UpdateVideoPort;
  PDD_VPORTCB_WAITFORSYNC        WaitForVideoPortSync;
  PDD_VPORTCB_GETSIGNALSTATUS    GetVideoSignalStatus;
  PDD_VPORTCB_COLORCONTROL       ColorControl;
} DD_VIDEOPORTCALLBACKS, *PDD_VIDEOPORTCALLBACKS;

Members

dwSize

Specifies the size in bytes of this DD_VIDEOPORTCALLBACKS structure.

dwFlags

Indicates what VPE callback functions the driver has implemented. For every bit set in dwFlags, the driver must initialize the corresponding function pointer member of this structure. This member can be one or more of the following flags:

DDHAL_VPORT32_CANCREATEVIDEOPORT
DDHAL_VPORT32_CREATEVIDEOPORT
DDHAL_VPORT32_FLIP
DDHAL_VPORT32_GETBANDWIDTH
DDHAL_VPORT32_GETINPUTFORMATS
DDHAL_VPORT32_GETOUTPUTFORMATS
DDHAL_VPORT32_GETAUTOFLIPSURF
DDHAL_VPORT32_GETFIELD
DDHAL_VPORT32_GETLINE
DDHAL_VPORT32_GETCONNECT
DDHAL_VPORT32_DESTROY
DDHAL_VPORT32_GETFLIPSTATUS
DDHAL_VPORT32_UPDATE
DDHAL_VPORT32_WAITFORSYNC
DDHAL_VPORT32_GETSIGNALSTATUS
DDHAL_VPORT32_COLORCONTROL
CanCreateVideoPort

Points to the driver-supplied DdVideoPortCanCreate callback.

CreateVideoPort

Points to the driver-supplied DdVideoPortCreate callback.

FlipVideoPort

Points to the driver-supplied DdVideoPortFlip callback.

GetVideoPortBandwidth

Points to the driver-supplied DdVideoPortGetBandwidth callback.

GetVideoPortInputFormats

Points to the driver-supplied DdVideoPortGetInputFormats callback.

GetVideoPortOutputFormats

Points to the driver-supplied DdVideoPortGetOutputFormats callback.

lpReserved1

Reserved for system use and should be ignored by the driver.

GetVideoPortField

Points to the driver-supplied DdVideoPortGetField callback.

GetVideoPortLine

Points to the driver-supplied DdVideoPortGetLine callback.

GetVideoPortConnectInfo

Points to the driver-supplied DdVideoPortGetConnectInfo callback.

DestroyVideoPort

Points to the driver-supplied DdVideoPortDestroy callback.

GetVideoPortFlipStatus

Points to the driver-supplied DdVideoPortGetFlipStatus callback.

UpdateVideoPort

Points to the driver-supplied DdVideoPortUpdate callback.

WaitForVideoPortSync

Points to the driver-supplied DdVideoPortWaitForSync callback.

GetVideoSignalStatus

Points to the driver-supplied DdVideoPortGetSignalStatus callback.

ColorControl

Points to the driver-supplied DdVideoPortColorControl callback.

Remarks

Entries that the display driver does not use should be set to NULL. The driver should initialize this structure when its DdGetDriverInfo function is called with the GUID_VideoPortCallbacks GUID.

Requirements

Header

Ddrawint.h (include Winddi.h)

See also

DD_COLORCONTROLCALLBACKS
DD_KERNELCALLBACKS
DD_MISCELLANEOUSCALLBACKS
DD_MOTIONCOMPCALLBACKS
DD_NTCALLBACKS
DD_PALETTECALLBACKS
DD_SURFACECALLBACKS
DdGetDriverInfo

 

 

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