2009/9/23 Jun Nie <[email protected]>:
> 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
