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The
GetVideoPortOutputFormatscallback function fills in the
specified array with all of the formats that can be written to the
frame buffer based on the specified input format. It puts that
number in the
dwNumFormatsmember of the
DDHAL_GETVPORTOUTPUTFORMATDATAstructure. If
lpddpfOutputFormatsis NULL, it only fills
in
dwNumFormatswith the number of formats that
can be written to the frame buffer. This callback is required.
DWORD __stdcall GetVideoPortOutputFormats( LPDDHAL_GETVPORTOUTPUTFORMATDATA pgvpofd );
Parameters
- pgvpofd
- Pointer to a
DDHAL_GETVPORTOUTPUTFORMATDATAstructure that contains the
format information for the specified video port.
Return Values
Returns one of the following values:
- DDHAL_DRIVER_HANDLED
- DDHAL_DRIVER_NOTHANDLED
Remarks
If the dwFlags member of the DDHAL_GETVPORTOUTPUTFORMATDATAstructure is set only to DDVPFORMAT_VIDEO, the HAL should return only those formats that are supported for the normal video data. If dwFlags is set only to DDVPFORMAT_VBI, the HAL should return only those formats supported for the VBI data. If dwFlags is set to both flags, the HAL should return all formats supported by the video port.
Last updated on Tuesday, July 13, 2004