Jeremy, the example you provided works with a stand alone graphics application, but not when using a GUIX graphics application. When run on a GUIX project, the g_sf_jpeg_decode.p_api->open() fails with a HardFault. I am guessing there is some type of conflict between trying to use g_sf_jpeg_decode while GUIX is also using this framework. If I try to close the framework before opening it I get a SSP_ERR_IN_USE error returned.
What I really need is to be able to display JPEG images located in memory using GUIX. My end product will read a jpeg images into RAM from a file on a SD card using FX File and then I need a routine to display this jpeg on the LCD.