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ICM_COMPRESS_GET_SIZE
The ICM_COMPRESS_GET_SIZE message requests that the video compression driver
supply the maximum size of one frame of data when compressed into the specified
output format. You can send this message explicitly or by using the ICCompressGetSize macro.
ICM_COMPRESS_GET_SIZE
wParam = (DWORD) (LPVOID) lpbiInput;
lParam = (DWORD) (LPVOID) lpbiOutput;
Parameters
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
BITMAPINFO, ICCompressGetSize
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