c++ - Is there any free or commercal jpeg decode which is really fast -

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I am using c ++, libjpeg to decode jpeg file. I think it's not fast enough, is there a way to make it faster by setting up a compiling parameter? Or can any other Linux JPEG files open faster?

Now a 4368 * 2912 4m JPEG takes approximately 750 mm to open the image. I want it to be reduced to 150 mms. thanks a lot!

Added: IJL seems faster than libjpeg :)

Most The faster the way it is not decoded at all. Generally you can use a low-res preview first; That requires only fewer frequencies to preview 546 x 289 pixels, you actually only need (0,0) (DC) component.


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