Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
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 |