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ICINFO
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.
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:
VIDCF_COMPRESSFRAMES
Driver is requesting to compress all frames. For information about compressing
all frames, see the ICM_COMPRESS_FRAMES_INFO message.
VIDCF_CRUNCH
Driver supports compressing to a frame size.
VIDCF_DRAW
Driver supports drawing.
VIDCF_FASTTEMPORALC
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.
VIDCF_FASTTEMPORALD
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.
VIDCF_QUALITY
Driver supports quality values.
VIDCF_TEMPORAL
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
Short version of the compressor name. The name in the null-terminated string
should be suitable for use in list boxes.
szDescription
Long version of the compressor name.
szDriver
Name of the module containing VCM compression driver. Normally, a driver does
not need to fill this out.
See Also
ICM_COMPRESS_FRAMES_INFO, ICM_GETINFO
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