V4L/DVB (12761): DocBook: add media API specs

The V4L and DVB API's are there for a long time. however, up to now,
no efforts were done to merge them to kernel DocBook.

This patch adds the current versions of the specs as an unique compendium.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 128 insertions, 0 deletions

diff --git a/Documentation/DocBook/v4l/pixfmt-vyuy.xml b/Documentation/DocBook/v4l/pixfmt-vyuy.xml
new file mode 100644
index 000000000000..61f12a5e68d9
--- /dev/null
+++ b/Documentation/DocBook/v4l/pixfmt-vyuy.xml
@@ -0,0 +1,128 @@
+    <refentry id="V4L2-PIX-FMT-VYUY">
+      <refmeta>
+        <refentrytitle>V4L2_PIX_FMT_VYUY ('VYUY')</refentrytitle>
+        &manvol;
+      </refmeta>
+      <refnamediv>
+        <refname><constant>V4L2_PIX_FMT_VYUY</constant></refname>
+        <refpurpose>Variation of
+<constant>V4L2_PIX_FMT_YUYV</constant> with different order of samples
+in memory</refpurpose>
+      </refnamediv>
+      <refsect1>
+        <title>Description</title>
+
+        <para>In this format each four bytes is two pixels. Each four
+bytes is two Y's, a Cb and a Cr. Each Y goes to one of the pixels, and
+the Cb and Cr belong to both pixels. As you can see, the Cr and Cb
+components have half the horizontal resolution of the Y
+component.</para>
+
+        <example>
+          <title><constant>V4L2_PIX_FMT_VYUY</constant> 4 &times; 4
+pixel image</title>
+
+          <formalpara>
+            <title>Byte Order.</title>
+            <para>Each cell is one byte.
+                <informaltable frame="none">
+                <tgroup cols="9" align="center">
+                  <colspec align="left" colwidth="2*" />
+                  <tbody valign="top">
+                    <row>
+                      <entry>start&nbsp;+&nbsp;0:</entry>
+                      <entry>Cr<subscript>00</subscript></entry>
+                      <entry>Y'<subscript>00</subscript></entry>
+                      <entry>Cb<subscript>00</subscript></entry>
+                      <entry>Y'<subscript>01</subscript></entry>
+                      <entry>Cr<subscript>01</subscript></entry>
+                      <entry>Y'<subscript>02</subscript></entry>
+                      <entry>Cb<subscript>01</subscript></entry>
+                      <entry>Y'<subscript>03</subscript></entry>
+                    </row>
+                    <row>
+                      <entry>start&nbsp;+&nbsp;8:</entry>
+                      <entry>Cr<subscript>10</subscript></entry>
+                      <entry>Y'<subscript>10</subscript></entry>
+                      <entry>Cb<subscript>10</subscript></entry>
+                      <entry>Y'<subscript>11</subscript></entry>
+                      <entry>Cr<subscript>11</subscript></entry>
+                      <entry>Y'<subscript>12</subscript></entry>
+                      <entry>Cb<subscript>11</subscript></entry>
+                      <entry>Y'<subscript>13</subscript></entry>
+                    </row>
+                    <row>
+                      <entry>start&nbsp;+&nbsp;16:</entry>
+                      <entry>Cr<subscript>20</subscript></entry>
+                      <entry>Y'<subscript>20</subscript></entry>
+                      <entry>Cb<subscript>20</subscript></entry>
+                      <entry>Y'<subscript>21</subscript></entry>
+                      <entry>Cr<subscript>21</subscript></entry>
+                      <entry>Y'<subscript>22</subscript></entry>
+                      <entry>Cb<subscript>21</subscript></entry>
+                      <entry>Y'<subscript>23</subscript></entry>
+                    </row>
+                    <row>
+                      <entry>start&nbsp;+&nbsp;24:</entry>
+                      <entry>Cr<subscript>30</subscript></entry>
+                      <entry>Y'<subscript>30</subscript></entry>
+                      <entry>Cb<subscript>30</subscript></entry>
+                      <entry>Y'<subscript>31</subscript></entry>
+                      <entry>Cr<subscript>31</subscript></entry>
+                      <entry>Y'<subscript>32</subscript></entry>
+                      <entry>Cb<subscript>31</subscript></entry>
+                      <entry>Y'<subscript>33</subscript></entry>
+                    </row>
+                  </tbody>
+                </tgroup>
+                </informaltable>
+              </para>
+          </formalpara>
+
+          <formalpara>
+            <title>Color Sample Location.</title>
+            <para>
+                <informaltable frame="none">
+                <tgroup cols="7" align="center">
+                  <tbody valign="top">
+                    <row>
+                      <entry></entry>
+                      <entry>0</entry><entry></entry><entry>1</entry><entry></entry>
+                      <entry>2</entry><entry></entry><entry>3</entry>
+                    </row>
+                    <row>
+                      <entry>0</entry>
+                      <entry>Y</entry><entry>C</entry><entry>Y</entry><entry></entry>
+                      <entry>Y</entry><entry>C</entry><entry>Y</entry>
+                    </row>
+                    <row>
+                      <entry>1</entry>
+                      <entry>Y</entry><entry>C</entry><entry>Y</entry><entry></entry>
+                      <entry>Y</entry><entry>C</entry><entry>Y</entry>
+                    </row>
+                    <row>
+                      <entry>2</entry>
+                      <entry>Y</entry><entry>C</entry><entry>Y</entry><entry></entry>
+                      <entry>Y</entry><entry>C</entry><entry>Y</entry>
+                    </row>
+                    <row>
+                      <entry>3</entry>
+                      <entry>Y</entry><entry>C</entry><entry>Y</entry><entry></entry>
+                      <entry>Y</entry><entry>C</entry><entry>Y</entry>
+                    </row>
+                  </tbody>
+                </tgroup>
+                </informaltable>
+              </para>
+          </formalpara>
+        </example>
+      </refsect1>
+    </refentry>
+
+  <!--
+Local Variables:
+mode: sgml
+sgml-parent-document: "pixfmt.sgml"
+indent-tabs-mode: nil
+End:
+  -->