[PATCH] MPEG doxy comments (was Re: [Ffmpeg-devel] Motion Estimation in snow.c for Waevelet encoded frames (DWT))

[Guillaume POIRIER]

Hi,

On 3/30/07, Loren Merritt <lorenm at u.washington.edu> wrote:
> On Fri, 30 Mar 2007, Aniket Joshi wrote:
>
> > I am trying to implement a new motion estimation algorithm for wavelet
> > encoded frames (DWT). The command I use for encoding the raw file is:
> > ffmpeg -t 60 -s 176x144 -i formulaone_64kbps_5fps.yuv -f rawvideo -pix_fmt
> > yuv420p -strict -2 -vcodec snow -b 600 -an -f mp4 play.mp4.
> >
> > I have some queries about the motion search part:
> >
> >
> > - Could you please tell me what exactly the cmp function defined at
> > line 106 of motion_est.c does? Does it compare two macroblocks?
>
> It compares two blocks, which may be full macroblocks or may be partitions
> thereof. Though snow doesn't have macroblocks in the same sense as
> mpeg-like codecs, so you can consider all blocks to be partitions of
> various sizes.

[..]

I've put your explanations as Doxy comments.

Is it worth making it to svn?

Guillaume
-- 
Rich, you're forgetting one thing here: *everybody* except you is
stupid.
    M?ns Rullg?rd
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