RE: [PATCH 0/2] Add V4L2_BUF_TYPE_META_OUTPUT buffer type

["Zhi, Yong" <yong.zhi-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>]

Hi, Sakari,

> -----Original Message-----
> From: Sakari Ailus [mailto:sakari.ailus-VuQAYsv1563Yd54FQh9/CA@public.gmane.org]
> Sent: Friday, August 18, 2017 2:31 PM
> To: linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Cc: linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; tfiga-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org; Zhi, Yong
> <yong.zhi-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
> Subject: [PATCH 0/2] Add V4L2_BUF_TYPE_META_OUTPUT buffer type
> 
> Hi folks,
> 
> Here's a non-RFC version of the META_OUTPUT buffer type patches.
> 
> The V4L2_BUF_TYPE_META_OUTPUT buffer type complements the metadata
> buffer types support for OUTPUT buffers, capture being already supported.
> This is intended for similar cases than V4L2_BUF_TYPE_META_CAPTURE but
> for output buffers, e.g. device parameters that may be complex and highly
> hierarchical data structure. Statistics are a current use case for metadata
> capture buffers.
> 
> Yong: could you take these to your IPU3 ImgU patchset, please? As that
> would be the first user, the patches would be merged with the driver itself.
> 

We implemented the meta format support in IPU3, the changes will be in ImgU v4, thanks!!

> since RFC:
> 
> - Fix make htmldocs build.
> 
> - Fix CAPTURE -> OUTPUT in buffer.rst.
> 
> - Added " for specifying how the device processes images" in the
>   documentation.
> 
> Sakari Ailus (2):
>   v4l: Add support for V4L2_BUF_TYPE_META_OUTPUT
>   docs-rst: v4l: Document V4L2_BUF_TYPE_META_OUTPUT interface
> 
>  Documentation/media/uapi/v4l/buffer.rst          |  3 +++
>  Documentation/media/uapi/v4l/dev-meta.rst        | 33 ++++++++++++++------
> ----
>  Documentation/media/uapi/v4l/vidioc-querycap.rst |  3 +++
>  Documentation/media/videodev2.h.rst.exceptions   |  2 ++
>  drivers/media/v4l2-core/v4l2-compat-ioctl32.c    |  2 ++
>  drivers/media/v4l2-core/v4l2-ioctl.c             | 25 ++++++++++++++++++
>  drivers/media/v4l2-core/videobuf2-v4l2.c         |  1 +
>  include/media/v4l2-ioctl.h                       | 17 ++++++++++++
>  include/uapi/linux/videodev2.h                   |  2 ++
>  9 files changed, 75 insertions(+), 13 deletions(-)
> 
> --
> 2.7.4