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ICM_DECOMPRESS message

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The ICM_DECOMPRESS message notifies a video decompression driver to decompress a frame of data into an application-defined buffer.

ICM_DECOMPRESS 
wParam = (DWORD) (LPVOID) &icd; 
lParam = sizeof(ICDECOMPRESS);

Parameters

icd

Pointer to an ICDECOMPRESS structure.

lParam

Size, in bytes, of ICDECOMPRESS.

Return Value

Returns ICERR_OK if successful or an error otherwise.

Remarks

If you want the driver to decompress data directly to the screen, send the ICM_DRAW message.

The driver returns an error if this message is received before the ICM_DECOMPRESS_BEGIN message.

Requirements

Requirement Value
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