[XviD-devel] image_output yv12_to_yv12

[suxen_drol]

On Tue, 17 Dec 2002 08:28:25 +0100 Milan Cutka <cutka@szm.sk> wrote:

> Hi,
> 
> yesterday I've updated colorspace conversion routines in ffdshow. I
> was using old xvid functions, but now I needed src_width!=src_stride
> in image_input. I've noticed that when converting to YV12 colorspace,
> image was distorted (I had this problem with latest XviD DirectShow
> filters too). This patch seems to solve it:
> 
> --- image_1.20.2.11_1.c 2002-12-17 08:20:43.000000000 +0100
> +++ image.c     2002-12-17 08:19:09.000000000 +0100
> @@ -881,8 +881,8 @@
>                 return 0;
>  
>         case XVID_CSP_YV12:             // u,v swapped
> -               yv12_to_yv12(dst, dst + width*height, dst + width*height + width2*height2,
> -                       width, width2,
> +               yv12_to_yv12(dst, dst + dst_stride*height, dst + dst_stride*height + (dst_stride>>1)*height2,
> +                       dst_stride, dst_stride>>1,
>                         image->y, image->v, image->u, edged_width, edged_width2,
>                         width, height, (csp & XVID_CSP_VFLIP));
>                 return 0;
> 
> Maybe other conversions should be checked too.

done. y_stride is now respected for IYUV and I420 colorspaces.

-- pete; life is like a box of ammo