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media: v4l: doc: Clarify v4l2_mbus_fmt height definition

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The v4l2_mbus_fmt width and height corresponds directly with the
v4l2_pix_format definitions, yet the differences in documentation make
it ambiguous what to do in the event of field heights.

Clarify this using the same text as is provided for the v4l2_pix_format
which is explicit on the matter, and by matching the terminology of
'image height' rather than the misleading 'frame height'.

Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Kieran Bingham 2018-01-08 12:55:23 -05:00 committed by Mauro Carvalho Chehab
parent c32678eac4
commit 0018147c96
2 changed files with 8 additions and 4 deletions
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8
Documentation/media/uapi/v4l/subdev-formats.rst
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@ -16,10 +16,14 @@ Media Bus Formats
* - __u32
- ``width``
- Image width, in pixels.
- Image width in pixels.
* - __u32
- ``height``
- Image height, in pixels.
- Image height in pixels. If ``field`` is one of ``V4L2_FIELD_TOP``,
``V4L2_FIELD_BOTTOM`` or ``V4L2_FIELD_ALTERNATE`` then height
refers to the number of lines in the field, otherwise it refers to
the number of lines in the frame (which is twice the field height
for interlaced formats).
* - __u32
- ``code``
- Format code, from enum

4
include/uapi/linux/v4l2-mediabus.h
View File

@ -18,8 +18,8 @@
/**
* struct v4l2_mbus_framefmt - frame format on the media bus
* @width: frame width
* @height: frame height
* @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)