ICDecompress

The ICDecompress function decompresses a single video frame.

DWORD ICDecompress(
  HIC hic,                        
  DWORD dwFlags,                  
  LPBITMAPINFOHEADER lpbiFormat,  
  LPVOID lpData,                  
  LPBITMAPINFOHEADER lpbi,        
  LPVOID lpBits                   
);
 

Parameters

hic

Handle of the decompressor to use.

dwFlags

Applicable decompression 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.

lpbiFormat

Address of a BITMAPINFO structure containing the format of the compressed data.

lpData

Address of the input data.

lpbi

Address of a BITMAPINFO structure containing the output format.

lpBits

Address of a buffer that is large enough to contain the decompressed data.

Return Values

Returns ICERR_OK if successful or an error otherwise.

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 Functions, BITMAPINFO