Re: Support on discontinuous planer buffer and stride

[Jun Nie <niej0001@xxxxxxxxx>]

2009/9/23 Jun Nie <niej0001@xxxxxxxxx>:
> Hi,
>      I re-send this email for the last one is rejected by system. I am
> sorry if you guys received both.
>
>      I am optimizing video playback with overlay with V4L2 driver. The
> video content is a sub-region of codec output. Thus a memory copy is
> necessary.
>     Is there plan to support for stride and discrete YUV planer in
> kernel? Such as below changes can help much for my usage case.
>
> --- a/include/linux/videodev2.h
> +++ b/include/linux/videodev2.h
> @@ -529,7 +529,20 @@ struct v4l2_buffer {
>                 __u32           offset;
>                 unsigned long   userptr;
>         } m;
> +       /* UV/GB location is valid only in planer case */
> +       union {
> +               __u32           offset_ug;
> +               unsigned long   userptr_ug;
> +       } m_ug;
> +       union {
> +               __u32           offset_vb;
> +               unsigned long   userptr_vb;
> +       } m_vb;
>         __u32                   length;
> +       /* stride of YUV or RGB */
> +       __u32                   stride_yr;
> +       __u32                   stride_ug;
> +       __u32                   stride_vb;
>         __u32                   input;
>         __u32                   reserved;
>  };
>
>     If such change is acceptable for everyone, I may help on the implementation.
>     Any comments are welcome.
>
> Jun
>

Hi, Hans/Guennadi

     What do you think of  supporting this feature?

Jun
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