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Add V4L2_META_FMT_SENSOR_DATA format 4CC. This new format will be used by the BCM2835 Unicam device to return out camera sensor embedded data. Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
33 lines
1.3 KiB
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33 lines
1.3 KiB
ReStructuredText
.. Permission is granted to copy, distribute and/or modify this
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.. document under the terms of the GNU Free Documentation License,
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.. Version 1.1 or any later version published by the Free Software
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.. Foundation, with no Invariant Sections, no Front-Cover Texts
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.. and no Back-Cover Texts. A copy of the license is included at
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.. Documentation/media/uapi/fdl-appendix.rst.
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..
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.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
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.. _v4l2-meta-fmt-sensor-data:
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***********************************
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V4L2_META_FMT_SENSOR_DATA ('SENS')
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***********************************
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Sensor Ancillary Metadata
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Description
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===========
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This format describes ancillary data generated by a camera sensor and
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transmitted over a stream on the camera bus. Sensor vendors generally have their
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own custom format for this ancillary data. Some vendors follow a generic
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CSI-2/SMIA embedded data format as described in the `CSI-2 specification.
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<https://mipi.org/specifications/csi-2>`_
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The size of the embedded buffer is defined as a single line with a pixel width
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width specified in bytes. This is obtained by a call to the
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:c:type:`VIDIOC_SUBDEV_G_FMT` ioctl on the sensor subdevice where the ``pad``
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field in :c:type:`v4l2_subdev_format` is set to 1. Note that this size is fixed
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and cannot be modified with a call to :c:type:`VIDIOC_SUBDEV_S_FMT`.
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