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ICDECOMPRESSEX structure (vfw.h)

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The ICDECOMPRESSEX structure contains decompression parameters used with the ICM_DECOMPRESSEX message

Syntax

typedef struct {
  DWORD              dwFlags;
  LPBITMAPINFOHEADER lpbiSrc;
  LPVOID             lpSrc;
  LPBITMAPINFOHEADER lpbiDst;
  LPVOID             lpDst;
  int                xDst;
  int                yDst;
  int                dxDst;
  int                dyDst;
  int                xSrc;
  int                ySrc;
  int                dxSrc;
  int                dySrc;
} ICDECOMPRESSEX;

Members

dwFlags

Applicable flags. The following values are defined:

Name Description
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.

lpbiSrc

Pointer to a BITMAPINFOHEADER structure containing the input format.

lpSrc

Pointer to a buffer containing the input data.

lpbiDst

Pointer to a BITMAPINFOHEADER structure containing the output format.

lpDst

Pointer to a buffer where the driver should write the decompressed image.

xDst

The x-coordinate of the destination rectangle within the DIB specified by lpbiDst.

yDst

The y-coordinate of the destination rectangle within the DIB specified by lpbiDst.

dxDst

Width of the destination rectangle.

dyDst

Height of the destination rectangle.

xSrc

The x-coordinate of the source rectangle within the DIB specified by lpbiSrc.

ySrc

The y-coordinate of the source rectangle within the DIB specified by lpbiSrc.

dxSrc

Width of the source rectangle.

dySrc

Height of the source rectangle.

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

BITMAPINFOHEADER

ICM_DECOMPRESSEX

Video Compression Manager

Video Compression Structures