[FFmpeg-devel] [PATCH] RV30 loop filter
Michael Niedermayer
michaelni
Sat Dec 13 22:23:50 CET 2008
On Sat, Dec 13, 2008 at 01:19:08PM +0200, Kostya wrote:
> $subj
> Index: libavcodec/rv30.c
> ===================================================================
> --- libavcodec/rv30.c (revision 15993)
> +++ libavcodec/rv30.c (working copy)
> @@ -112,6 +112,137 @@
> return rv30_b_types[code];
> }
>
> +static inline void rv30_weak_loop_filter(uint8_t *src, const int step,
> + const int stride, const int lim)
> +{
> + uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
> + int i, diff;
> +
> + for(i = 0; i < 4; i++){
> + diff = ((src[-2*step] - src[1*step]) - (src[-1*step] - src[0*step])*4) >> 3;
> + diff = av_clip(diff, -lim, lim);
> + src[-1*step] = cm[src[-1*step] + diff];
> + src[ 0*step] = cm[src[ 0*step] - diff];
> + src += stride;
> + }
> +}
> +
> +static void rv30_loop_filter(RV34DecContext *r, int row)
> +{
> + MpegEncContext *s = &r->s;
> + int mb_pos, mb_x;
> + int i, j, k;
> + uint8_t *Y, *C;
> + int strength = 0;//FIXME how to determine correct value?
the code is not bitexact yet?
anyway this code looks cleaner than rv40 ...
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
If you really think that XML is the answer, then you definitly missunderstood
the question -- Attila Kinali
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