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media: uapi: Document which mbus format fields are valid for metadata 

Now that metadata mbus formats have been added, it is necessary to define
which fields in struct v4l2_mbus_format are applicable to them (not many).

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Sakari Ailus 2023-08-01 16:15:36 +03:00 committed by Hans Verkuil
parent f28bdda2f8
commit ac5214a473
2 changed files with 20 additions and 13 deletions
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15
Documentation/userspace-api/media/v4l/subdev-formats.rst
View File

@ -33,7 +33,7 @@ Media Bus Formats
* - __u32
- ``field``
- Field order, from enum :c:type:`v4l2_field`. See
:ref:`field-order` for details.
:ref:`field-order` for details. Zero for metadata mbus codes.
* - __u32
- ``colorspace``
- Image colorspace, from enum :c:type:`v4l2_colorspace`.
@ -45,7 +45,7 @@ Media Bus Formats
conversion is supported by setting the flag
V4L2_SUBDEV_MBUS_CODE_CSC_COLORSPACE in the corresponding struct
:c:type:`v4l2_subdev_mbus_code_enum` during enumeration.
See :ref:`v4l2-subdev-mbus-code-flags`.
See :ref:`v4l2-subdev-mbus-code-flags`. Zero for metadata mbus codes.
* - union {
- (anonymous)
* - __u16
@ -61,7 +61,7 @@ Media Bus Formats
that ycbcr_enc conversion is supported by setting the flag
V4L2_SUBDEV_MBUS_CODE_CSC_YCBCR_ENC in the corresponding struct
:c:type:`v4l2_subdev_mbus_code_enum` during enumeration.
See :ref:`v4l2-subdev-mbus-code-flags`.
See :ref:`v4l2-subdev-mbus-code-flags`. Zero for metadata mbus codes.
* - __u16
- ``hsv_enc``
- HSV encoding, from enum :c:type:`v4l2_hsv_encoding`.
@ -75,7 +75,7 @@ Media Bus Formats
that hsv_enc conversion is supported by setting the flag
V4L2_SUBDEV_MBUS_CODE_CSC_HSV_ENC in the corresponding struct
:c:type:`v4l2_subdev_mbus_code_enum` during enumeration.
See :ref:`v4l2-subdev-mbus-code-flags`
See :ref:`v4l2-subdev-mbus-code-flags`. Zero for metadata mbus codes.
* - }
-
* - __u16
@ -90,8 +90,8 @@ Media Bus Formats
The driver indicates that quantization conversion is supported by
setting the flag V4L2_SUBDEV_MBUS_CODE_CSC_QUANTIZATION in the
corresponding struct :c:type:`v4l2_subdev_mbus_code_enum`
during enumeration. See :ref:`v4l2-subdev-mbus-code-flags`.
during enumeration. See :ref:`v4l2-subdev-mbus-code-flags`. Zero for
metadata mbus codes.
* - __u16
- ``xfer_func``
- Transfer function, from enum :c:type:`v4l2_xfer_func`.
@ -104,7 +104,8 @@ Media Bus Formats
The driver indicates that the transfer function conversion is supported by
setting the flag V4L2_SUBDEV_MBUS_CODE_CSC_XFER_FUNC in the
corresponding struct :c:type:`v4l2_subdev_mbus_code_enum`
during enumeration. See :ref:`v4l2-subdev-mbus-code-flags`.
during enumeration. See :ref:`v4l2-subdev-mbus-code-flags`. Zero for
metadata mbus codes.
* - __u16
- ``flags``
- flags See: :ref:v4l2-mbus-framefmt-flags

18
include/uapi/linux/v4l2-mediabus.h
View File

@ -19,12 +19,18 @@
* @width: image width
* @height: image height
* @code: data format code (from enum v4l2_mbus_pixelcode)
* @field: used interlacing type (from enum v4l2_field)
* @colorspace: colorspace of the data (from enum v4l2_colorspace)
* @ycbcr_enc: YCbCr encoding of the data (from enum v4l2_ycbcr_encoding)
* @hsv_enc: HSV encoding of the data (from enum v4l2_hsv_encoding)
* @quantization: quantization of the data (from enum v4l2_quantization)
* @xfer_func: transfer function of the data (from enum v4l2_xfer_func)
* @field: used interlacing type (from enum v4l2_field), zero for metadata
* mbus codes
* @colorspace: colorspace of the data (from enum v4l2_colorspace), zero on
* metadata mbus codes
* @ycbcr_enc: YCbCr encoding of the data (from enum v4l2_ycbcr_encoding), zero
* for metadata mbus codes
* @hsv_enc: HSV encoding of the data (from enum v4l2_hsv_encoding), zero for
* metadata mbus codes
* @quantization: quantization of the data (from enum v4l2_quantization), zero
* for metadata mbus codes
* @xfer_func: transfer function of the data (from enum v4l2_xfer_func), zero
* for metadata mbus codes
* @flags: flags (V4L2_MBUS_FRAMEFMT_*)
* @reserved: reserved bytes that can be later used
*/