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media: docs: Document colorimetry class
Add a document for ext control colorimetry class. Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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@ -51,6 +51,7 @@ applicable to all devices.
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ext-ctrls-fm-tx
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ext-ctrls-fm-rx
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ext-ctrls-detect
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ext-ctrls-colorimetry
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fourcc
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format
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planar-apis
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@ -0,0 +1,22 @@
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.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
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.. _colorimetry-controls:
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*****************************
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Colorimetry Control Reference
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*****************************
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The Colorimetry class includes controls for High Dynamic Range
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imaging for representing colors in digital images and video. The
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controls should be used for video and image encoding and decoding
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as well as in HDMI receivers and transmitters.
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Colorimetry Control IDs
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-----------------------
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.. _colorimetry-control-id:
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``V4L2_CID_COLORIMETRY_CLASS (class)``
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The Colorimetry class descriptor. Calling
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:ref:`VIDIOC_QUERYCTRL` for this control will
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return a description of this control class.
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@ -402,6 +402,10 @@ still cause this situation.
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- 0xa40000
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- The class containing stateless codec controls. These controls are
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described in :ref:`codec-stateless-controls`.
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* - ``V4L2_CTRL_CLASS_COLORIMETRY``
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- 0xa50000
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- The class containing colorimetry controls. These controls are
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described in :ref:`colorimetry-controls`.
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Return Value
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============
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