ICCompressGetSize
The ICCompressGetSize
macro requests that the video compression driver supply the maximum size of one
frame of data when compressed into the specified output format. You can use
this macro or explicitly call the ICM_COMPRESS_GET_SIZE message.
DWORD ICCompressGetSize(
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hic, |
|
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lpbiInput, |
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|
lpbiOutput |
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); |
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Parameters
hic
Handle of a
compressor.
lpbiInput
Address of a BITMAPINFO structure containing the
input format.
lpbiOutput
Address of a BITMAPINFO
structure containing the output format.
Return Values
Returns the
maximum number of bytes a single compressed frame can occupy.
Remarks
Typically,
applications send this message to determine how large a buffer to allocate for
the compressed frame.
The driver
should calculate the size of the largest possible frame based on the input and
output formats.
See Also