DDVIDEOPORTCONNECT

This structure describes a video port connection. This structure is used with the IDDVideoPortContainer::GetVideoPortConnectInfo method.

typedef struct _DDVIDEOPORTCONNECT{ 
  DWORD dwSize; 
  DWORD dwPortWidth; 
  GUID  guidTypeID; 
  DWORD dwFlags; 
  ULONG_PTR dwReserved1; 
} DDVIDEOPORTCONNECT, *LPDDVIDEOPORTCONNECT; 

Members

• dwSize
  Size of the structure, in bytes. This member must be initialized before use.
• dwPortWidth
  Width of the video port. This value represents the number of physical pins on the video port, not the width of a surface in memory. This member must always be set, even when the value in the guidTypeID member assumes a certain size.
• guidTypeID
  A GUID that describes the sync characteristics of the video port. The following shows the port types that are predefined.

  Type	Description
  DDVPTYPE_E_HREFH_VREFH	External syncs where HREF is active high and VREF is active high.
  DDVPTYPE_E_HREFH_VREFL	External syncs where HREF is active high and VREF is active low.
  DDVPTYPE_E_HREFL_VREFH	External syncs where HREF is active low and VREF is active high.
  DDVPTYPE_E_HREFL_VREFL	External syncs where HREF is active low and VREF is active low.
  DDVPTYPE_CCIR656	Sync information is embedded in the data stream according to the CCIR656 specification.
  DDVPTYPE_BROOKTREE	Sync information is embedded in the data stream using the Brooktree definition.
  DDVPTYPE_PHILIPS	Sync information is embedded in the data stream using the Philips definition.

• dwFlags
  Flags describing the capabilities of the video-port connection. This member can be set by DirectDraw when connection information is being retrieved or by the client when connection information is being set. This member can be a combination of the flags shown in the following table.

  Flag	Description
  DDVPCONNECT_DOUBLECLOCK	Indicates that the video port either supports double-clocking data or should double-clock data. This flag is only valid with an external sync.
  DDVPCONNECT_VACT	Indicates that the video port either supports using an external VACT signal or should use the external VACT signal. This flag is only valid with an external sync.
  DDVPCONNECT_INVERTPOLARITY	Indicates that the video port is capable of inverting the field polarities or is to invert field polarities. When a video port inverts field polarities, it treats even fields as odd fields and odd fields as even fields.
  DDVPCONNECT_DISCARDSVREFDATA	The video port discards any data written during the VREF period, causing it to not be written to the frame buffer. This flag is read-only.
  DDVPCONNECT_HALFLINE	The video port will write half lines into the frame buffer, which can cause the data to be displayed incorrectly. This flag is read-only.
  DDVPCONNECT_INTERLACED	Indicates that the signal is interlaced. This flag is only used by the client when creating a video port object.
  DDVPCONNECT_SHAREEVEN	The physical video port is shareable, and that this video port object will use the even fields. This flag is only used by the client when creating the video port object.
  DDVPCONNECT_SHAREODD	The physical video port is shareable, and that this video port object will use the odd fields. This flag is only used by the client when creating the video port object.

• dwReserved1
  Reserved; set to zero.

Remarks

This structure is used independently and as a member of the DDVIDEOPORTDESC structure.

Requirements

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
Header: Dvp.h.

 Last updated on Thursday, April 08, 2004

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