diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-27 14:58:31 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-27 14:58:31 -0700 |
commit | ff9a082fda424257976f08fce942609f358015e0 (patch) | |
tree | 478e6b449b19baaf842369a13923499ce83ef895 /Documentation/media/uapi/v4l/v4l2-selection-targets.rst | |
parent | 6a492b0f23d28e1f946cdf08e54617484400dafb (diff) | |
parent | 85538b1ad145c67198cb55d02de14ba269cc323d (diff) |
Merge tag 'media/v4.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media documentation updates from Mauro Carvalho Chehab:
"This patch series does the conversion of all media documentation stuff
to Restrutured Text markup format and add them to the
Documentation/index.rst file.
The media documentation was grouped into 4 books:
- media uAPI
- media kAPI
- V4L driver-specific documentation
- DVB driver-specific documentation
It also contains several documentation improvements and one fixup
patch for a core issue with cropcap.
PS. After this patch series, the media DocBook is deprecated and
should be removed. I'll add such patch on a future pull request"
* tag 'media/v4.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (322 commits)
[media] cx23885-cardlist.rst: add a new card
[media] doc-rst: add some needed escape codes
[media] doc-rst: kapi: use :c:func: instead of :cpp:func
doc-rst: kernel-doc: fix a change introduced by mistake
[media] v4l2-ioctl.h add debug info for struct v4l2_ioctl_ops
[media] dvb_ringbuffer.h: some documentation improvements
[media] v4l2-ctrls.h: fully document the header file
[media] doc-rst: Fix some typedef ugly warnings
[media] doc-rst: reorganize the kAPI v4l2 chapters
[media] rename v4l2-framework.rst to v4l2-intro.rst
[media] move V4L2 clocks to a separate .rst file
[media] v4l2-fh.rst: add cross references and markups
[media] v4l2-fh.rst: add fh contents from v4l2-framework.rst
[media] v4l2-fh.h: add documentation for it
[media] v4l2-event.rst: add cross-references and markups
[media] v4l2-event.h: document all functions
[media] v4l2-event.rst: add text from v4l2-framework.rst
[media] v4l2-framework.rst: remove videobuf quick chapter
[media] v4l2-dev: add cross-references and improve markup
[media] doc-rst: move v4l2-dev doc to a separate file
...
Diffstat (limited to 'Documentation/media/uapi/v4l/v4l2-selection-targets.rst')
-rw-r--r-- | Documentation/media/uapi/v4l/v4l2-selection-targets.rst | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/Documentation/media/uapi/v4l/v4l2-selection-targets.rst b/Documentation/media/uapi/v4l/v4l2-selection-targets.rst new file mode 100644 index 000000000000..7519099a50cd --- /dev/null +++ b/Documentation/media/uapi/v4l/v4l2-selection-targets.rst @@ -0,0 +1,135 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _v4l2-selection-targets: + +***************** +Selection targets +***************** + +The precise meaning of the selection targets may be dependent on which +of the two interfaces they are used. + + +.. _v4l2-selection-targets-table: + +.. flat-table:: Selection target definitions + :header-rows: 1 + :stub-columns: 0 + + + - .. row 1 + + - Target name + + - id + + - Definition + + - Valid for V4L2 + + - Valid for V4L2 subdev + + - .. row 2 + + - ``V4L2_SEL_TGT_CROP`` + + - 0x0000 + + - Crop rectangle. Defines the cropped area. + + - Yes + + - Yes + + - .. row 3 + + - ``V4L2_SEL_TGT_CROP_DEFAULT`` + + - 0x0001 + + - Suggested cropping rectangle that covers the "whole picture". + + - Yes + + - No + + - .. row 4 + + - ``V4L2_SEL_TGT_CROP_BOUNDS`` + + - 0x0002 + + - Bounds of the crop rectangle. All valid crop rectangles fit inside + the crop bounds rectangle. + + - Yes + + - Yes + + - .. row 5 + + - ``V4L2_SEL_TGT_NATIVE_SIZE`` + + - 0x0003 + + - The native size of the device, e.g. a sensor's pixel array. + ``left`` and ``top`` 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. + + - Yes + + - Yes + + - .. row 6 + + - ``V4L2_SEL_TGT_COMPOSE`` + + - 0x0100 + + - Compose rectangle. Used to configure scaling and composition. + + - Yes + + - Yes + + - .. row 7 + + - ``V4L2_SEL_TGT_COMPOSE_DEFAULT`` + + - 0x0101 + + - Suggested composition rectangle that covers the "whole picture". + + - Yes + + - No + + - .. row 8 + + - ``V4L2_SEL_TGT_COMPOSE_BOUNDS`` + + - 0x0102 + + - Bounds of the compose rectangle. All valid compose rectangles fit + inside the compose bounds rectangle. + + - Yes + + - Yes + + - .. row 9 + + - ``V4L2_SEL_TGT_COMPOSE_PADDED`` + + - 0x0103 + + - The active area and all padding pixels that are inserted or + modified by hardware. + + - Yes + + - No |