ICCompressQuery macro (vfw.h)

The ICCompressQuery macro queries a video compression driver to determine if it supports a specific input format or if it can compress a specific input format to a specific output format. You can use this macro or explicitly call the ICM_COMPRESS_QUERY message.

Syntax

void ICCompressQuery(
   hic,
   lpbiInput,
   lpbiOutput
);

Parameters

hic

Handle to a compressor.

lpbiInput

Pointer to a BITMAPINFO structure containing the input format.

lpbiOutput

Pointer to a BITMAPINFO structure containing the output format. You can specify zero for this parameter to indicate any output format is acceptable.

Return value

None

Remarks

When a driver receives this message, it should examine the BITMAPINFO structure associated with lpbiInput to determine if it can compress the input format.

Requirements

See also

Video Compression Macros

Video Compression Manager