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Commit d924de09 authored by Michael Jones's avatar Michael Jones Committed by Mauro Carvalho Chehab
Browse files

[media] v4l: add V4L2_PIX_FMT_Y12 format 



Y12 is a grey-scale format with a depth of 12 bits per pixel stored in
16-bit words.

Signed-off-by: default avatarMichael Jones <michael.jones@matrix-vision.de>
Acked-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 5a3ddcde

Documentation/DocBook/media-entities.tmpl

+1 −0
Original line number Diff line number Diff line
@@ -294,6 +294,7 @@ 
<!ENTITY sub-srggb10 SYSTEM "v4l/pixfmt-srggb10.xml">

<!ENTITY sub-srggb8 SYSTEM "v4l/pixfmt-srggb8.xml">

<!ENTITY sub-y10 SYSTEM "v4l/pixfmt-y10.xml">

<!ENTITY sub-y12 SYSTEM "v4l/pixfmt-y12.xml">

<!ENTITY sub-pixfmt SYSTEM "v4l/pixfmt.xml">

<!ENTITY sub-cropcap SYSTEM "v4l/vidioc-cropcap.xml">

<!ENTITY sub-dbg-g-register SYSTEM "v4l/vidioc-dbg-g-register.xml">

Documentation/DocBook/v4l/pixfmt-y12.xml

0 → 100644
+79 −0
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<refentry id="V4L2-PIX-FMT-Y12">

  <refmeta>

    <refentrytitle>V4L2_PIX_FMT_Y12 ('Y12 ')</refentrytitle>

    &manvol;

  </refmeta>

  <refnamediv>

    <refname><constant>V4L2_PIX_FMT_Y12</constant></refname>

    <refpurpose>Grey-scale image</refpurpose>

  </refnamediv>

  <refsect1>

    <title>Description</title>



    <para>This is a grey-scale image with a depth of 12 bits per pixel. Pixels

are stored in 16-bit words with unused high bits padded with 0. The least

significant byte is stored at lower memory addresses (little-endian).</para>



    <example>

      <title><constant>V4L2_PIX_FMT_Y12</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>Y'<subscript>00low</subscript></entry>

		  <entry>Y'<subscript>00high</subscript></entry>

		  <entry>Y'<subscript>01low</subscript></entry>

		  <entry>Y'<subscript>01high</subscript></entry>

		  <entry>Y'<subscript>02low</subscript></entry>

		  <entry>Y'<subscript>02high</subscript></entry>

		  <entry>Y'<subscript>03low</subscript></entry>

		  <entry>Y'<subscript>03high</subscript></entry>

		</row>

		<row>

		  <entry>start&nbsp;+&nbsp;8:</entry>

		  <entry>Y'<subscript>10low</subscript></entry>

		  <entry>Y'<subscript>10high</subscript></entry>

		  <entry>Y'<subscript>11low</subscript></entry>

		  <entry>Y'<subscript>11high</subscript></entry>

		  <entry>Y'<subscript>12low</subscript></entry>

		  <entry>Y'<subscript>12high</subscript></entry>

		  <entry>Y'<subscript>13low</subscript></entry>

		  <entry>Y'<subscript>13high</subscript></entry>

		</row>

		<row>

		  <entry>start&nbsp;+&nbsp;16:</entry>

		  <entry>Y'<subscript>20low</subscript></entry>

		  <entry>Y'<subscript>20high</subscript></entry>

		  <entry>Y'<subscript>21low</subscript></entry>

		  <entry>Y'<subscript>21high</subscript></entry>

		  <entry>Y'<subscript>22low</subscript></entry>

		  <entry>Y'<subscript>22high</subscript></entry>

		  <entry>Y'<subscript>23low</subscript></entry>

		  <entry>Y'<subscript>23high</subscript></entry>

		</row>

		<row>

		  <entry>start&nbsp;+&nbsp;24:</entry>

		  <entry>Y'<subscript>30low</subscript></entry>

		  <entry>Y'<subscript>30high</subscript></entry>

		  <entry>Y'<subscript>31low</subscript></entry>

		  <entry>Y'<subscript>31high</subscript></entry>

		  <entry>Y'<subscript>32low</subscript></entry>

		  <entry>Y'<subscript>32high</subscript></entry>

		  <entry>Y'<subscript>33low</subscript></entry>

		  <entry>Y'<subscript>33high</subscript></entry>

		</row>

	      </tbody>

	    </tgroup>

	  </informaltable>

	</para>

      </formalpara>

    </example>

  </refsect1>

</refentry>

Documentation/DocBook/v4l/pixfmt.xml

+1 −0
Original line number Diff line number Diff line
@@ -696,6 +696,7 @@ information.</para> 
    &sub-packed-yuv;

    &sub-grey;

    &sub-y10;

    &sub-y12;

    &sub-y16;

    &sub-yuyv;

    &sub-uyvy;

include/linux/videodev2.h

+1 −0
Original line number Diff line number Diff line
@@ -308,6 +308,7 @@ struct v4l2_pix_format { 
#define V4L2_PIX_FMT_Y4      v4l2_fourcc('Y', '0', '4', ' ') /*  4  Greyscale     */

#define V4L2_PIX_FMT_Y6      v4l2_fourcc('Y', '0', '6', ' ') /*  6  Greyscale     */

#define V4L2_PIX_FMT_Y10     v4l2_fourcc('Y', '1', '0', ' ') /* 10  Greyscale     */

#define V4L2_PIX_FMT_Y12     v4l2_fourcc('Y', '1', '2', ' ') /* 12  Greyscale     */

#define V4L2_PIX_FMT_Y16     v4l2_fourcc('Y', '1', '6', ' ') /* 16  Greyscale     */



/* Palette formats */