Hello,
I finally discovered the answer to my previous question:
"what modifications libmpeg2 does in a block before it enter in the IDCT
functions?"
So, the 64 values of a block are multiplied by 16 and reordered. And the
IDCT
functions of libmpeg2 know this and its output are the same of a "
Hi,
I see in pratice and in emails of the past
([mpeg2-dev] Re: mpeg2-dev Scan order - 2004-02-19, and
Re: [mpeg2-dev] about the idct! - 2004-04-30)
that the IDCT of two dimensions performed by idct_row and idct_col operating
together (how we can see in mpeg2_idct_copy_c and mpeg2_idct_copy_add