ICDecompressOpen

  • Article

The ICDecompressOpen macro opens a decompressor that is compatible with the specified formats.

HIC ICDecompressOpen(
  DWORD fccType,              
  DWORD fccHandler,           
  LPBITMAPINFOHEADER lpbiIn,  
  LPBITMAPINFOHEADER lpbiOut  
);

Parameters

fccType

Four-character code indicating the type of compressor to open. For video streams, the value of this parameter is "VIDC" or ICTYPE_VIDEO.

fccHandler

Four-character code indicating the preferred stream handler to use. Typically, this information is stored in the stream header in an AVI file.

lpbiIn

Pointer to a structure defining the input format. A decompressor handle is not returned unless it can decompress this format. For bitmaps, this parameter refers to a BITMAPINFOHEADER structure.

lpbiOut

Pointer to a structure defining an optional decompression format. You can also specify zero to use the default output format associated with the input format.

If this parameter is nonzero, a compressor handle is not returned unless it can create this output format. For bitmaps, this parameter refers to a BITMAPINFOHEADER structure.

Return Values

Returns a handle of a decompressor if successful or zero otherwise.

Remarks

The ICDecompressOpen macro is defined as follows:

#define ICDecompressOpen(fccType, fccHandler, lpbiIn, lpbiOut) \ 
    ICLocate(fccType, fccHandler, lpbiIn, lpbiOut, ICMODE_DECOMPRESS);

Requirements

**  Windows NT/2000/XP:** Included in Windows NT 3.1 and later.
**  Windows 95/98/Me:** Included in Windows 95 and later.
**  Header:** Declared in Vfw.h.

See Also

Video Compression Manager, Video Compression Macros, BITMAPINFOHEADER