ICINFO structure (vfw.h)
The ICINFO structure contains compression parameters supplied by a video compression driver. The driver fills or updates the structure when it receives the ICM_GETINFO message.
Syntax
typedef struct {
DWORD dwSize;
DWORD fccType;
DWORD fccHandler;
DWORD dwFlags;
DWORD dwVersion;
DWORD dwVersionICM;
WCHAR szName[16];
WCHAR szDescription[128];
WCHAR szDriver[128];
} ICINFO;
Members
dwSize
Size, in bytes, of the ICINFO structure.
fccType
Four-character code indicating the type of stream being compressed or decompressed. Specify "VIDC" for video streams.
fccHandler
A four-character code identifying a specific compressor.
dwFlags
Applicable flags. Zero or more of the following flags can be set:
| Name | Description |
|---|---|
|
Driver is requesting to compress all frames. For information about compressing all frames, see the ICM_COMPRESS_FRAMES_INFO message. |
|
Driver supports compressing to a frame size. |
|
Driver supports drawing. |
|
Driver can perform temporal compression and maintains its own copy of the current frame. When compressing a stream of frame data, the driver doesn't need image data from the previous frame. |
|
Driver can perform temporal decompression and maintains its own copy of the current frame. When decompressing a stream of frame data, the driver doesn't need image data from the previous frame. |
|
Driver supports quality values. |
|
Driver supports inter-frame compression. |
dwVersion
Version number of the driver.
dwVersionICM
Version of VCM supported by the driver. This member should be set to ICVERSION.
szName[16]
Short version of the compressor name. The name in the null-terminated string should be suitable for use in list boxes.
szDescription[128]
Long version of the compressor name.
szDriver[128]
Name of the module containing VCM compression driver. Normally, a driver does not need to fill this out.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Header | vfw.h |