What function to use to fill a vpx.Image from []byte

Hi, I've search a lot on how to fill the vpx.Image but the only function I saw is vpx_img_read() that is declare in tools_common.h. This function is not available in this lib and also the function takes a FILE*. I did previously called vpx.ImageAlloc to allocate a vpx.Image buffer. Then what would be the proper way to fill a vpx.Image from []bye? Thanks. Then, if my encoding test works, I will post my example ;) Vincent