ICM_COMPRESS message

The ICM_COMPRESS message notifies a video compression driver to compress a frame of data into an application-defined buffer.



ICM_COMPRESS 
wParam = (DWORD) (LPVOID) &icc; 
lParam = sizeof(ICCOMPRESS); 


Parameters

icc

Pointer to an ICCOMPRESS structure. The following members of this structure specify the compression parameters: lpbiInput, lpInput, lpbiOutput, lpOutput, lpbiPrev, lpPrev, lpckid, lpdwFlags, dwFrameSize, and dwQuality. The driver should also use the biSizeImage member of the BITMAPINFOHEADER structure associated with lpbiOutput of ICCOMPRESS to return the size of the compressed frame.

lParam

Size, in bytes, of ICCOMPRESS.

Return Value

Returns ICERR_OK if successful or an error otherwise.

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Vfw.h

See also

Video Compression Manager
Video Compression Messages

 

 

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