Re: [RFC 0/2] Add V4L2_BUF_TYPE_META_OUTPUT buffer type

[Tomasz Figa]

Hi Sakari,

On Sat, Jun 17, 2017 at 12:14 AM, Sakari Ailus
 wrote:
> 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.
>
> There's a warning related to references from make htmldocs; I'll fix that
> in v2 / non-RFC version.
>
> 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| 32 
> ++--
>  Documentation/media/uapi/v4l/vidioc-querycap.rst |  3 +++
>  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 ++
>  8 files changed, 72 insertions(+), 13 deletions(-)

Is there by any chance an update on this series?

Best regards,
Tomasz

Re: [RFC 0/2] Add V4L2_BUF_TYPE_META_OUTPUT buffer type

[Hans Verkuil]

Hi Sakari,

On 06/16/2017 05:14 PM, Sakari Ailus wrote:

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.

There's a warning related to references from make htmldocs; I'll fix that
in v2 / non-RFC version.

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| 32 ++--
  Documentation/media/uapi/v4l/vidioc-querycap.rst |  3 +++
  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 ++
  8 files changed, 72 insertions(+), 13 deletions(-)



I would very much appreciate it if you can also provide patches for v4l2-ctl
and v4l2-compliance. Should be quite easy, just follow what I did for the
META_CAPTURE support.

Regards,

Hans