ICOpen function (vfw.h)
The ICOpen function opens a compressor or decompressor.
Syntax
HIC VFWAPI ICOpen(
DWORD fccType,
DWORD fccHandler,
UINT wMode
);
Parameters
fccType
Four-character code indicating the type of compressor or decompressor to open. For video streams, the value of this parameter is "VIDC".
fccHandler
Preferred handler of the specified type. Typically, the handler type is stored in the stream header in an AVI file.
wMode
Flag defining the use of the compressor or decompressor. The following values are defined.
| Value | Meaning |
|---|---|
| ICMODE_COMPRESS | Compressor will perform normal compression. |
| ICMODE_DECOMPRESS | Decompressor will perform normal decompression. |
| ICMODE_DRAW | Decompressor will decompress and draw the data directly to hardware. |
| ICMODE_FASTCOMPRESS | Compressor will perform fast (real-time) compression. |
| ICMODE_FASTDECOMPRESS | Decompressor will perform fast (real-time) decompression. |
| ICMODE_QUERY | Queries the compressor or decompressor for information. |
Return value
Returns a handle to a compressor or decompressor if successful or zero otherwise.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | vfw.h |
| Library | Vfw32.lib |
| DLL | Msvfw32.dll |