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
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dwFlags
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Applicable flags. The following values are defined:
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ICDECOMPRESS_HURRYUP
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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.
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ICDECOMPRESS_NOTKEYFRAME
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Current frame is not a key frame.
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ICDECOMPRESS_NULLFRAME
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Current frame does not contain data and the decompressed image should be left the same.
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ICDECOMPRESS_PREROLL
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Current frame precedes the point in the movie where playback starts and, therefore, will not be drawn.
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ICDECOMPRESS_UPDATE
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Screen is being updated or refreshed.
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lpbiInput
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Address of a BITMAPINFOHEADER structure containing the input format.
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lpInput
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Address of a buffer containing the input data.
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lpbiOutput
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Address of a BITMAPINFOHEADER structure containing the output format.
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lpOutput
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Address of a buffer where the driver should write the decompressed image.
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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