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Message-Id: <1471530818-7928-3-git-send-email-ricardo.ribalda@gmail.com>
Date: Thu, 18 Aug 2016 16:33:28 +0200
From: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>,
Hans Verkuil <hverkuil@...all.nl>,
Markus Heiser <markus.heiser@...marIT.de>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Helen Mae Koike Fornazier <helen.koike@...labora.co.uk>,
Antti Palosaari <crope@....fi>,
Philipp Zabel <p.zabel@...gutronix.de>,
Shuah Khan <shuah@...nel.org>, linux-kernel@...r.kernel.org,
linux-media@...r.kernel.org
Cc: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
Subject: [PATCH v5 02/12] [media] Documentation: Add HSV format
Describe the HSV formats
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
---
Documentation/media/uapi/v4l/hsv-formats.rst | 19 +++
Documentation/media/uapi/v4l/pixfmt-packed-hsv.rst | 158 +++++++++++++++++++++
Documentation/media/uapi/v4l/pixfmt.rst | 1 +
Documentation/media/uapi/v4l/v4l2.rst | 5 +
4 files changed, 183 insertions(+)
create mode 100644 Documentation/media/uapi/v4l/hsv-formats.rst
create mode 100644 Documentation/media/uapi/v4l/pixfmt-packed-hsv.rst
diff --git a/Documentation/media/uapi/v4l/hsv-formats.rst b/Documentation/media/uapi/v4l/hsv-formats.rst
new file mode 100644
index 000000000000..f0f2615eaa95
--- /dev/null
+++ b/Documentation/media/uapi/v4l/hsv-formats.rst
@@ -0,0 +1,19 @@
+.. -*- coding: utf-8; mode: rst -*-
+
+.. _hsv-formats:
+
+***********
+HSV Formats
+***********
+
+These formats store the color information of the image
+in a geometrical representation. The colors are mapped into a
+cylinder, where the angle is the HUE, the height is the VALUE
+and the distance to the center is the SATURATION. This is a very
+useful format for image segmentation algorithms.
+
+
+.. toctree::
+ :maxdepth: 1
+
+ pixfmt-packed-hsv
diff --git a/Documentation/media/uapi/v4l/pixfmt-packed-hsv.rst b/Documentation/media/uapi/v4l/pixfmt-packed-hsv.rst
new file mode 100644
index 000000000000..60ac821e309d
--- /dev/null
+++ b/Documentation/media/uapi/v4l/pixfmt-packed-hsv.rst
@@ -0,0 +1,158 @@
+.. -*- coding: utf-8; mode: rst -*-
+
+.. _packed-hsv:
+
+******************
+Packed HSV formats
+******************
+
+*man Packed HSV formats(2)*
+
+Packed HSV formats
+
+
+Description
+===========
+
+The *hue* (h) is measured in degrees, one LSB represents two degrees.
+The *saturation* (s) and the *value* (v) are measured in percentage of the
+cylinder: 0 being the smallest value and 255 the maximum.
+
+
+The values are packed in 24 or 32 bit formats.
+
+
+.. flat-table:: Packed HSV Image Formats
+ :header-rows: 2
+ :stub-columns: 0
+
+ - .. row 1
+
+ - Identifier
+ - Code
+ -
+ - :cspan:`7` Byte 0 in memory
+ -
+ - :cspan:`7` Byte 1
+ -
+ - :cspan:`7` Byte 2
+ -
+ - :cspan:`7` Byte 3
+
+ - .. row 2
+
+ -
+ -
+ - Bit
+ - 7
+ - 6
+ - 5
+ - 4
+ - 3
+ - 2
+ - 1
+ - 0
+ -
+ - 7
+ - 6
+ - 5
+ - 4
+ - 3
+ - 2
+ - 1
+ - 0
+ -
+ - 7
+ - 6
+ - 5
+ - 4
+ - 3
+ - 2
+ - 1
+ - 0
+ -
+ - 7
+ - 6
+ - 5
+ - 4
+ - 3
+ - 2
+ - 1
+ - 0
+
+ - .. _V4L2-PIX-FMT-HSV32:
+
+ - ``V4L2_PIX_FMT_HSV32``
+ - 'HSV4'
+ -
+ - -
+ - -
+ - -
+ - -
+ - -
+ - -
+ - -
+ - -
+ -
+ - h\ :sub:`7`
+ - h\ :sub:`6`
+ - h\ :sub:`5`
+ - h\ :sub:`4`
+ - h\ :sub:`3`
+ - h\ :sub:`2`
+ - h\ :sub:`1`
+ - h\ :sub:`0`
+ -
+ - s\ :sub:`7`
+ - s\ :sub:`6`
+ - s\ :sub:`5`
+ - s\ :sub:`4`
+ - s\ :sub:`3`
+ - s\ :sub:`2`
+ - s\ :sub:`1`
+ - s\ :sub:`0`
+ -
+ - v\ :sub:`7`
+ - v\ :sub:`6`
+ - v\ :sub:`5`
+ - v\ :sub:`4`
+ - v\ :sub:`3`
+ - v\ :sub:`2`
+ - v\ :sub:`1`
+ - v\ :sub:`0`
+
+ - .. _V4L2-PIX-FMT-HSV24:
+
+ - ``V4L2_PIX_FMT_HSV24``
+ - 'HSV3'
+ -
+ - h\ :sub:`7`
+ - h\ :sub:`6`
+ - h\ :sub:`5`
+ - h\ :sub:`4`
+ - h\ :sub:`3`
+ - h\ :sub:`2`
+ - h\ :sub:`1`
+ - h\ :sub:`0`
+ -
+ - s\ :sub:`7`
+ - s\ :sub:`6`
+ - s\ :sub:`5`
+ - s\ :sub:`4`
+ - s\ :sub:`3`
+ - s\ :sub:`2`
+ - s\ :sub:`1`
+ - s\ :sub:`0`
+ -
+ - v\ :sub:`7`
+ - v\ :sub:`6`
+ - v\ :sub:`5`
+ - v\ :sub:`4`
+ - v\ :sub:`3`
+ - v\ :sub:`2`
+ - v\ :sub:`1`
+ - v\ :sub:`0`
+ -
+ -
+
+Bit 7 is the most significant bit.
diff --git a/Documentation/media/uapi/v4l/pixfmt.rst b/Documentation/media/uapi/v4l/pixfmt.rst
index 81222a99f7ce..1d2270422345 100644
--- a/Documentation/media/uapi/v4l/pixfmt.rst
+++ b/Documentation/media/uapi/v4l/pixfmt.rst
@@ -29,6 +29,7 @@ see also :ref:`VIDIOC_G_FBUF <VIDIOC_G_FBUF>`.)
pixfmt-indexed
pixfmt-rgb
yuv-formats
+ hsv-formats
depth-formats
pixfmt-013
sdr-formats
diff --git a/Documentation/media/uapi/v4l/v4l2.rst b/Documentation/media/uapi/v4l/v4l2.rst
index 5e41a8505301..36c6d0dc3859 100644
--- a/Documentation/media/uapi/v4l/v4l2.rst
+++ b/Documentation/media/uapi/v4l/v4l2.rst
@@ -89,6 +89,11 @@ part can be used and distributed without restrictions.
Revision History
****************
+:revision: 4.9 / 2016-07-15 (*rr*)
+
+Introduce HSV formats.
+
+
:revision: 4.5 / 2015-10-29 (*rr*)
Extend VIDIOC_G_EXT_CTRLS;. Replace ctrl_class with a new union with
--
2.8.1
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