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

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
[off-list ref]
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