ICDECOMPRESS

The ICDECOMPRESS structure contains decompression parameters used with the ICM_DECOMPRESS message.

typedef struct { 
    DWORD              dwFlags; 
    LPBITMAPINFOHEADER lpbiInput; 
    LPVOID             lpInput; 
    LPBITMAPINFOHEADER lpbiOutput; 
    LPVOID             lpOutput; 
    DWORD              ckid; 
} ICDECOMPRESS; 
 

Members

dwFlags
Applicable flags. The following values are defined:
ICDECOMPRESS_HURRYUP
Tries to decompress at a faster rate. When an application uses this flag, the driver should buffer the decompressed data but not draw the image.
ICDECOMPRESS_NOTKEYFRAME
Current frame is not a key frame.
ICDECOMPRESS_NULLFRAME
Current frame does not contain data and the decompressed image should be left the same.
ICDECOMPRESS_PREROLL
Current frame precedes the point in the movie where playback starts and, therefore, will not be drawn.
ICDECOMPRESS_UPDATE
Screen is being updated or refreshed.
lpbiInput
Address of a BITMAPINFOHEADER structure containing the input format.
lpInput
Address of a buffer containing the input data.
lpbiOutput
Address of a BITMAPINFOHEADER structure containing the output format.
lpOutput
Address of a buffer where the driver should write the decompressed image.
ckid
Chunk identifier from the AVI file.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in vfw.h.
  Import Library: Use vfw32.lib.

See Also

Video Compression Manager Overview, Video Compression Structures, BITMAPINFOHEADER, ICM_DECOMPRESS