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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.
See Also
BITMAPINFOHEADER, ICM_DECOMPRESS
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