Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Applications use the methods of the IDirectDrawVideoPort interface to channel live video data from a hardware video port to a DirectDraw surface.
The methods of the IDirectDrawVideoPort interface can be organized into the following groups:
| Color controls | GetColorControls |
| SetColorControls | |
| Fields and Signals | GetFieldPolarity |
| GetVideoSignalStatus | |
| Flipping | Flip |
| SetTargetSurface | |
| Formats | GetInputFormats |
| GetOutputFormats | |
| Timing and Synchronization | GetVideoLine |
| WaitForSync | |
| Video control | StartVideo |
| StopVideo | |
| UpdateVideo | |
| Zoom factors | GetBandwidthInfo |
The IDirectDrawVideoPort interface, like all COM interfaces, inherits the IUnknown interface methods. The IUnknown interface supports the following three methods:
| IUnknown | AddRef |
| QueryInterface | |
| Release |
You can use the LPDIRECTDRAWVIDEOPORT data type to declare a variable that contains a pointer to an IDirectDrawVideoPort interface. The Dvp.h header file declares the LPDIRECTDRAWVIDEOPORT with the following code.
typedef struct IDirectDrawVideoPort FAR *LPDIRECTDRAWVIDEOPORT;
Requirements
OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
Header: Dvp.h.
Link Library: Ddraw.lib.
Send Feedback on this topic to the authors