diff options
| author | Sakari Ailus <sakari.ailus@iki.fi> | 2012-06-01 13:56:53 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-07-06 20:17:00 -0300 |
| commit | 64b9ce83a446277d3ffdb5e25e9aeb66442da2a9 (patch) | |
| tree | 58c4215f4982f9a697b89555eb38158cb51f3ecb /Documentation/DocBook/media/v4l/dev-subdev.xml | |
| parent | 5689b28890f4a7c4e12290dbf2c29a9d23047335 (diff) | |
| download | op-kernel-dev-64b9ce83a446277d3ffdb5e25e9aeb66442da2a9.zip op-kernel-dev-64b9ce83a446277d3ffdb5e25e9aeb66442da2a9.tar.gz | |
[media] v4l: Common documentation for selection targets
Both V4L2 and V4L2 subdev interface have very similar selection APIs with
differences foremost related to in-memory and media bus formats. However,
the selection targets are the same for both. Most targets are and in the
future will likely continue to be more the same than with any differences.
Thus it makes sense to unify the documentation of the targets.
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'Documentation/DocBook/media/v4l/dev-subdev.xml')
| -rw-r--r-- | Documentation/DocBook/media/v4l/dev-subdev.xml | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/Documentation/DocBook/media/v4l/dev-subdev.xml b/Documentation/DocBook/media/v4l/dev-subdev.xml index e88d5ea..afeb196 100644 --- a/Documentation/DocBook/media/v4l/dev-subdev.xml +++ b/Documentation/DocBook/media/v4l/dev-subdev.xml @@ -276,7 +276,7 @@ </para> </section> - <section> + <section id="v4l2-subdev-selections"> <title>Selections: cropping, scaling and composition</title> <para>Many sub-devices support cropping frames on their input or output @@ -289,9 +289,9 @@ &v4l2-rect; by the coordinates of the top left corner and the rectangle size. Both the coordinates and sizes are expressed in pixels.</para> - <para>As for pad formats, drivers store try and active rectangles for - the selection targets <xref - linkend="v4l2-subdev-selection-targets" />.</para> + <para>As for pad formats, drivers store try and active + rectangles for the selection targets <xref + linkend="v4l2-selections-common" />.</para> <para>On sink pads, cropping is applied relative to the current pad format. The pad format represents the image size as @@ -308,7 +308,7 @@ <para>Scaling support is optional. When supported by a subdev, the crop rectangle on the subdev's sink pad is scaled to the size configured using the &VIDIOC-SUBDEV-S-SELECTION; IOCTL - using <constant>V4L2_SUBDEV_SEL_TGT_COMPOSE</constant> + using <constant>V4L2_SEL_TGT_COMPOSE</constant> selection target on the same pad. If the subdev supports scaling but not composing, the top and left values are not used and must always be set to zero.</para> @@ -362,7 +362,7 @@ performed by the user: the changes made will be propagated to any subsequent stages. If this behaviour is not desired, the user must set - <constant>V4L2_SUBDEV_SEL_FLAG_KEEP_CONFIG</constant> flag. This + <constant>V4L2_SEL_FLAG_KEEP_CONFIG</constant> flag. This flag causes no propagation of the changes are allowed in any circumstances. This may also cause the accessed rectangle to be adjusted by the driver, depending on the properties of the |
