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Upscale images on DM6467

Hi, all

Dose anyone knows how to upscale an image to a larger size on DM6467, since the VDCE only provides the Donw-scaler. I have an 352x288 CIF image decoded, and I wish to up-scale to 704x576 for display, the only way I could do is doing it on arm, however, it takes almost 80% CPU resources, which is not acceptable...

So anyone get a clue ? Thanks a lot in advance.

 

Wang Ning