Use AMD/ATI's IDCT Engine decode JPEG?

[lghlmcl]

For display JPEG file, Can I use IDCT Engine in ATI Radeon for acceleration? How to use IDCT Engine?

[bridgman]

Once we release documentation for the IDCT engine I think you should be able to use it for JPEG. I'm not 100% sure that the JPEG and MPEG2 IDCT processing is the same but I *think* it is.

EDIT -- I don't know offhand if there is an existing API for performing hardware accelerated JPEG decompression. Building the API and wiring it into the driver structure might end up being just as hard as writing the driver code itself. Maybe an extention to the XvMC API ?

[lghlmcl]

Thanks for your replay. I have an item to display JPEG on ATI Radeon's GPU with a slowly CPU(ARM), for a jpeg decoder on our ARM, IDCT is too heavy...