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Date: Fri, 15 Jul 2016 17:16:52 +0200
From: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
To: auro Carvalho Chehab <mchehab@....samsung.com>,
Hans Verkuil <hverkuil@...all.nl>,
Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Antti Palosaari <crope@....fi>,
Guennadi Liakhovetski <guennadi.liakhovetski@...el.com>,
Helen Mae Koike Fornazier <helen.koike@...labora.co.uk>,
Philipp Zabel <p.zabel@...gutronix.de>,
Shuah Khan <shuahkh@....samsung.com>,
linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
Subject: [PATCH 2/6] [media] Documentation: Add HSV format
Describe the HSV formats.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
---
.../DocBook/media/v4l/pixfmt-packed-hsv.xml | 195 +++++++++++++++++++++
Documentation/DocBook/media/v4l/pixfmt.xml | 13 ++
Documentation/DocBook/media/v4l/v4l2.xml | 8 +
3 files changed, 216 insertions(+)
create mode 100644 Documentation/DocBook/media/v4l/pixfmt-packed-hsv.xml
diff --git a/Documentation/DocBook/media/v4l/pixfmt-packed-hsv.xml b/Documentation/DocBook/media/v4l/pixfmt-packed-hsv.xml
new file mode 100644
index 000000000000..3b41d567e32b
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/pixfmt-packed-hsv.xml
@@ -0,0 +1,195 @@
+<refentry id="packed-hsv">
+ <refmeta>
+ <refentrytitle>Packed HSV formats</refentrytitle>
+ &manvol;
+ </refmeta>
+ <refnamediv>
+ <refname>Packed HSV formats</refname>
+ <refpurpose>Packed HSV formats</refpurpose>
+ </refnamediv>
+ <refsect1>
+ <title>Description</title>
+
+ <para>The HUE (h) is meassured in degrees, one LSB represents two
+degrees. The SATURATION (s) and the VALUE (v) are meassured in percentage
+of the cylinder: 0 being the smallest value and 255 the maximum.</para>
+ <para>The values are packed in 24 or 32 bit formats. </para>
+
+ <table pgwide="1" frame="none">
+ <title>Packed YUV Image Formats</title>
+ <tgroup cols="37" align="center">
+ <colspec colname="id" align="left" />
+ <colspec colname="fourcc" />
+ <colspec colname="bit" />
+
+ <colspec colnum="4" colname="b07" align="center" />
+ <colspec colnum="5" colname="b06" align="center" />
+ <colspec colnum="6" colname="b05" align="center" />
+ <colspec colnum="7" colname="b04" align="center" />
+ <colspec colnum="8" colname="b03" align="center" />
+ <colspec colnum="9" colname="b02" align="center" />
+ <colspec colnum="10" colname="b01" align="center" />
+ <colspec colnum="11" colname="b00" align="center" />
+
+ <colspec colnum="13" colname="b17" align="center" />
+ <colspec colnum="14" colname="b16" align="center" />
+ <colspec colnum="15" colname="b15" align="center" />
+ <colspec colnum="16" colname="b14" align="center" />
+ <colspec colnum="17" colname="b13" align="center" />
+ <colspec colnum="18" colname="b12" align="center" />
+ <colspec colnum="19" colname="b11" align="center" />
+ <colspec colnum="20" colname="b10" align="center" />
+
+ <colspec colnum="22" colname="b27" align="center" />
+ <colspec colnum="23" colname="b26" align="center" />
+ <colspec colnum="24" colname="b25" align="center" />
+ <colspec colnum="25" colname="b24" align="center" />
+ <colspec colnum="26" colname="b23" align="center" />
+ <colspec colnum="27" colname="b22" align="center" />
+ <colspec colnum="28" colname="b21" align="center" />
+ <colspec colnum="29" colname="b20" align="center" />
+
+ <colspec colnum="31" colname="b37" align="center" />
+ <colspec colnum="32" colname="b36" align="center" />
+ <colspec colnum="33" colname="b35" align="center" />
+ <colspec colnum="34" colname="b34" align="center" />
+ <colspec colnum="35" colname="b33" align="center" />
+ <colspec colnum="36" colname="b32" align="center" />
+ <colspec colnum="37" colname="b31" align="center" />
+ <colspec colnum="38" colname="b30" align="center" />
+
+ <spanspec namest="b07" nameend="b00" spanname="b0" />
+ <spanspec namest="b17" nameend="b10" spanname="b1" />
+ <spanspec namest="b27" nameend="b20" spanname="b2" />
+ <spanspec namest="b37" nameend="b30" spanname="b3" />
+ <thead>
+ <row>
+ <entry>Identifier</entry>
+ <entry>Code</entry>
+ <entry> </entry>
+ <entry spanname="b0">Byte 0 in memory</entry>
+ <entry spanname="b1">Byte 1</entry>
+ <entry spanname="b2">Byte 2</entry>
+ <entry spanname="b3">Byte 3</entry>
+ </row>
+ <row>
+ <entry> </entry>
+ <entry> </entry>
+ <entry>Bit</entry>
+ <entry>7</entry>
+ <entry>6</entry>
+ <entry>5</entry>
+ <entry>4</entry>
+ <entry>3</entry>
+ <entry>2</entry>
+ <entry>1</entry>
+ <entry>0</entry>
+ <entry> </entry>
+ <entry>7</entry>
+ <entry>6</entry>
+ <entry>5</entry>
+ <entry>4</entry>
+ <entry>3</entry>
+ <entry>2</entry>
+ <entry>1</entry>
+ <entry>0</entry>
+ <entry> </entry>
+ <entry>7</entry>
+ <entry>6</entry>
+ <entry>5</entry>
+ <entry>4</entry>
+ <entry>3</entry>
+ <entry>2</entry>
+ <entry>1</entry>
+ <entry>0</entry>
+ <entry> </entry>
+ <entry>7</entry>
+ <entry>6</entry>
+ <entry>5</entry>
+ <entry>4</entry>
+ <entry>3</entry>
+ <entry>2</entry>
+ <entry>1</entry>
+ <entry>0</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row id="V4L2-PIX-FMT-HSV32">
+ <entry><constant>V4L2_PIX_FMT_HSV32</constant></entry>
+ <entry>'HSV4'</entry>
+ <entry></entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry>-</entry>
+ <entry></entry>
+ <entry>h<subscript>7</subscript></entry>
+ <entry>h<subscript>6</subscript></entry>
+ <entry>h<subscript>5</subscript></entry>
+ <entry>h<subscript>4</subscript></entry>
+ <entry>h<subscript>3</subscript></entry>
+ <entry>h<subscript>2</subscript></entry>
+ <entry>h<subscript>1</subscript></entry>
+ <entry>h<subscript>0</subscript></entry>
+ <entry></entry>
+ <entry>s<subscript>7</subscript></entry>
+ <entry>s<subscript>6</subscript></entry>
+ <entry>s<subscript>5</subscript></entry>
+ <entry>s<subscript>4</subscript></entry>
+ <entry>s<subscript>3</subscript></entry>
+ <entry>s<subscript>2</subscript></entry>
+ <entry>s<subscript>1</subscript></entry>
+ <entry>s<subscript>0</subscript></entry>
+ <entry></entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ <row id="V4L2-PIX-FMT-HSV24">
+ <entry><constant>V4L2_PIX_FMT_HSV24</constant></entry>
+ <entry>'HSV3'</entry>
+ <entry></entry>
+ <entry>h<subscript>7</subscript></entry>
+ <entry>h<subscript>6</subscript></entry>
+ <entry>h<subscript>5</subscript></entry>
+ <entry>h<subscript>4</subscript></entry>
+ <entry>h<subscript>3</subscript></entry>
+ <entry>h<subscript>2</subscript></entry>
+ <entry>h<subscript>1</subscript></entry>
+ <entry>h<subscript>0</subscript></entry>
+ <entry></entry>
+ <entry>s<subscript>7</subscript></entry>
+ <entry>s<subscript>6</subscript></entry>
+ <entry>s<subscript>5</subscript></entry>
+ <entry>s<subscript>4</subscript></entry>
+ <entry>s<subscript>3</subscript></entry>
+ <entry>s<subscript>2</subscript></entry>
+ <entry>s<subscript>1</subscript></entry>
+ <entry>s<subscript>0</subscript></entry>
+ <entry></entry>
+ <entry>v<subscript>7</subscript></entry>
+ <entry>v<subscript>6</subscript></entry>
+ <entry>v<subscript>5</subscript></entry>
+ <entry>v<subscript>4</subscript></entry>
+ <entry>v<subscript>3</subscript></entry>
+ <entry>v<subscript>2</subscript></entry>
+ <entry>v<subscript>1</subscript></entry>
+ <entry>v<subscript>0</subscript></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+
+ <para>Bit 7 is the most significant bit.</para>
+
+ </refsect1>
+ </refentry>
diff --git a/Documentation/DocBook/media/v4l/pixfmt.xml b/Documentation/DocBook/media/v4l/pixfmt.xml
index 5a08aeea4360..7b081a6bdc61 100644
--- a/Documentation/DocBook/media/v4l/pixfmt.xml
+++ b/Documentation/DocBook/media/v4l/pixfmt.xml
@@ -1740,6 +1740,19 @@ extended control <constant>V4L2_CID_MPEG_STREAM_TYPE</constant>, see
</table>
</section>
+ <section id="hsv-formats">
+ <title>HSV Formats</title>
+
+ <para> 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. </para>
+
+ &packed-hsv;
+
+ </section>
+
<section id="sdr-formats">
<title>SDR Formats</title>
diff --git a/Documentation/DocBook/media/v4l/v4l2.xml b/Documentation/DocBook/media/v4l/v4l2.xml
index 42e626d6c936..f38039b7c338 100644
--- a/Documentation/DocBook/media/v4l/v4l2.xml
+++ b/Documentation/DocBook/media/v4l/v4l2.xml
@@ -152,6 +152,14 @@ structs, ioctls) must be noted in more detail in the history chapter
(compat.xml), along with the possible impact on existing drivers and
applications. -->
<revision>
+ <revnumber>4.8</revnumber>
+ <date>2016-07-15</date>
+ <authorinitials>rr</authorinitials>
+ <revremark> Introduce HSV formats.
+ </revremark>
+ </revision>
+
+ <revision>
<revnumber>4.5</revnumber>
<date>2015-10-29</date>
<authorinitials>rr</authorinitials>
--
2.8.1
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