Re: [mpeg2-dev] libmpeg2 IDCT implementation

2008-01-17 Thread Mateus Krepsky Ludwich
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 "

[mpeg2-dev] libmpeg2 IDCT implementation

2007-11-30 Thread Mateus Krepsky Ludwich
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