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[media] v4l: Add V4L2_SEL_TGT_NATIVE_SIZE selection target

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The V4L2_SEL_TGT_NATIVE_SIZE target is used to denote e.g. the size of a
sensor's pixel array.

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Sakari Ailus 2014-10-15 13:38:15 -03:00 committed by Mauro Carvalho Chehab
parent 6936d74fb5
commit 0b4bc768dc
2 changed files with 18 additions and 0 deletions
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16
Documentation/DocBook/media/v4l/selections-common.xml
View file

@ -62,6 +62,22 @@
<entry>Yes</entry>
<entry>Yes</entry>
</row>
<row>
<entry><constant>V4L2_SEL_TGT_NATIVE_SIZE</constant></entry>
<entry>0x0003</entry>
<entry>The native size of the device, e.g. a sensor's
pixel array. <structfield>left</structfield> and
<structfield>top</structfield> fields are zero for this
target. Setting the native size will generally only make
sense for memory to memory devices where the software can
create a canvas of a given size in which for example a
video frame can be composed. In that case
V4L2_SEL_TGT_NATIVE_SIZE can be used to configure the size
of that canvas.
</entry>
<entry>Yes</entry>
<entry>Yes</entry>
</row>
<row>
<entry><constant>V4L2_SEL_TGT_COMPOSE</constant></entry>
<entry>0x0100</entry>

2
include/uapi/linux/v4l2-common.h
View file

@ -43,6 +43,8 @@
#define V4L2_SEL_TGT_CROP_DEFAULT 0x0001
/* Cropping bounds */
#define V4L2_SEL_TGT_CROP_BOUNDS 0x0002
/* Native frame size */
#define V4L2_SEL_TGT_NATIVE_SIZE 0x0003
/* Current composing area */
#define V4L2_SEL_TGT_COMPOSE 0x0100
/* Default composing area */