Q We are having problems related to decompressing a file compressed in
the JPEG format using FDecompressImage. If a valid MatrixRecordPtr is passed to
the routine, it returns an error -84962 (codecUnimpErr). If a parameter of
NULL is passed as the MatrixRecordPtr, the routine works fine? Are matrix
operations unsupported with the JPEG codec?
A FDecompressImage only handles translation and scaling matrixes, so please check
to see whether your matrix is either a translation of scaling matrix. Any other
matrix types are reported back with the message codecUnimpErr.
When you specify NULL as the matrix you will get an identity matrix.s
[May 01 1995]
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