[FFmpeg-devel] [PATCH] MMX VP3 Loop Filter
Guillaume Poirier
gpoirier
Tue Oct 7 10:40:09 CEST 2008
Hello,
David Conrad wrote:
> Here's an 8-bit version. However, checking for the C fallback negates
> the small speedup on my Penryn compared to the 16-bit version.
>
Then is it possible to adapt ....
> ------------------------------------------------------------------------
>
> diff --git a/libavcodec/i386/dsputil_mmx.c b/libavcodec/i386/dsputil_mmx.c
> index 6e1a93d..2f035d2 100644
> --- a/libavcodec/i386/dsputil_mmx.c
> +++ b/libavcodec/i386/dsputil_mmx.c
> @@ -2591,6 +2591,10 @@ void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx)
> c->h263_v_loop_filter= h263_v_loop_filter_mmx;
> c->h263_h_loop_filter= h263_h_loop_filter_mmx;
> }
> + if (ENABLE_VP3_DECODER || ENABLE_THEORA_DECODER) {
> + c->vp3_v_loop_filter= ff_vp3_v_loop_filter_mmx;
> + c->vp3_h_loop_filter= ff_vp3_h_loop_filter_mmx;
> + }
> c->put_h264_chroma_pixels_tab[0]= put_h264_chroma_mc8_mmx_rnd;
> c->put_h264_chroma_pixels_tab[1]= put_h264_chroma_mc4_mmx;
> c->put_no_rnd_h264_chroma_pixels_tab[0]= put_h264_chroma_mc8_mmx_nornd;
this code so that you detect "globally" that filter_limit is greater
than 63, so that you should alwaus use the C version, and never the MMX
version?
This may seem stupid, but I prefered to ask as it seemed like a damn too
simple solution.
Guillaume
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