Incorrect bfOffBits Calculation in WIN_ConvertDIBtoBMP #12315
Merged
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Description
In
WIN_ConvertDIBtoBMP
, the code incorrectly usessizeof(BITMAPINFOHEADER)
instead ofpbih->biSize
to calculate the offset to pixel data in the BMP header. This leads to invalid BMP files when the DIB uses a header larger than BITMAPINFOHEADER.Solution
Replaced
sizeof(BITMAPINFOHEADER)
withpbih->biSize
as it represents the actual size of the DIB header (e.g., 40, 108 bytes), ensuring the correct offset to pixel data.