[x264-devel] What's the use of function: x264_mb_cache_fenc_satd( h ) ?

[kenter]

Hi:
     I recently studied the x.264 encoder, I'm puzzelled by the function
"x264_mb_cache_fenc_satd()".
     It seems this funciton take source Y plane image data as input which
pointed by h->mb.pic.p_fenc[0] and output are: h->mb.pic.fenc_satd[y][x],
h->mb.pic.fenc_sa8d[y][x], h->mb.pic.fenc_satd_sum and
h->mb.pic.fenc_sa8d_sum
     However, I searched the whole project for these four vairant, It seems
no function refered the above variants, then, why we use this funciton? what
the use of it?

     I hope anyone can help me on this issue

Best Wishes!
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