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IMX1 jpeg encoder DCT optimization

Question asked by benoit degand on Mar 23, 2009
Latest reply on Mar 31, 2009 by benoit degand

Hello, I'm trying to optimize libjpeg 6b using DCT of the Multmedia Accelerator integrated in IMX1 chip.

I use the /dev/dct drive but I have some difficulties to integrate it in the jpeg library. DCT software calculation in jpeg library is different of DCT IMX1 hardware calculation. The compare calculation are incompatible, different range of data ?

 

Thank you in advance,

Benoît Degand

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