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| author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-07-27 10:45:04 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-07-27 10:45:04 -0300 |
| commit | 85538b1ad145c67198cb55d02de14ba269cc323d (patch) | |
| tree | 409fca93b357839b8c89b7099f2888c087694b64 /Documentation/media/uapi/v4l/pixfmt-008.rst | |
| parent | 9c1958fc326a0a0a533ec8e86ea6fa30977207de (diff) | |
| parent | d271d3d9b333c94cd54a12fa506e17772a04617c (diff) | |
| download | blackbird-op-linux-85538b1ad145c67198cb55d02de14ba269cc323d.tar.gz blackbird-op-linux-85538b1ad145c67198cb55d02de14ba269cc323d.zip | |
Merge branch 'topic/docs-next' into v4l_for_linus
* topic/docs-next: (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/pixfmt-008.rst')
| -rw-r--r-- | Documentation/media/uapi/v4l/pixfmt-008.rst | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/Documentation/media/uapi/v4l/pixfmt-008.rst b/Documentation/media/uapi/v4l/pixfmt-008.rst new file mode 100644 index 000000000000..4bec79784bdd --- /dev/null +++ b/Documentation/media/uapi/v4l/pixfmt-008.rst @@ -0,0 +1,32 @@ +.. -*- coding: utf-8; mode: rst -*- + +*************************************** +Detailed Transfer Function Descriptions +*************************************** + + +.. _xf-smpte-2084: + +Transfer Function SMPTE 2084 (V4L2_XFER_FUNC_SMPTE2084) +======================================================= + +The :ref:`smpte2084` standard defines the transfer function used by +High Dynamic Range content. + +Constants: + m1 = (2610 / 4096) / 4 + + m2 = (2523 / 4096) * 128 + + c1 = 3424 / 4096 + + c2 = (2413 / 4096) * 32 + + c3 = (2392 / 4096) * 32 + +Transfer function: + L' = ((c1 + c2 * L\ :sup:`m1`) / (1 + c3 * L\ :sup:`m1`))\ :sup:`m2` + +Inverse Transfer function: + L = (max(L':sup:`1/m2` - c1, 0) / (c2 - c3 * + L'\ :sup:`1/m2`))\ :sup:`1/m1` |
