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[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: Michael Jones <michael.jones@matrix-vision.de>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

authored by

Michael Jones and committed by
Mauro Carvalho Chehab d924de09 5a3ddcde

+82
+1
Documentation/DocBook/media-entities.tmpl
··· 294 294 <!ENTITY sub-srggb10 SYSTEM "v4l/pixfmt-srggb10.xml"> 295 295 <!ENTITY sub-srggb8 SYSTEM "v4l/pixfmt-srggb8.xml"> 296 296 <!ENTITY sub-y10 SYSTEM "v4l/pixfmt-y10.xml"> 297 + <!ENTITY sub-y12 SYSTEM "v4l/pixfmt-y12.xml"> 297 298 <!ENTITY sub-pixfmt SYSTEM "v4l/pixfmt.xml"> 298 299 <!ENTITY sub-cropcap SYSTEM "v4l/vidioc-cropcap.xml"> 299 300 <!ENTITY sub-dbg-g-register SYSTEM "v4l/vidioc-dbg-g-register.xml">
+79
Documentation/DocBook/v4l/pixfmt-y12.xml
··· 1 + <refentry id="V4L2-PIX-FMT-Y12"> 2 + <refmeta> 3 + <refentrytitle>V4L2_PIX_FMT_Y12 ('Y12 ')</refentrytitle> 4 + &manvol; 5 + </refmeta> 6 + <refnamediv> 7 + <refname><constant>V4L2_PIX_FMT_Y12</constant></refname> 8 + <refpurpose>Grey-scale image</refpurpose> 9 + </refnamediv> 10 + <refsect1> 11 + <title>Description</title> 12 + 13 + <para>This is a grey-scale image with a depth of 12 bits per pixel. Pixels 14 + are stored in 16-bit words with unused high bits padded with 0. The least 15 + significant byte is stored at lower memory addresses (little-endian).</para> 16 + 17 + <example> 18 + <title><constant>V4L2_PIX_FMT_Y12</constant> 4 &times; 4 19 + pixel image</title> 20 + 21 + <formalpara> 22 + <title>Byte Order.</title> 23 + <para>Each cell is one byte. 24 + <informaltable frame="none"> 25 + <tgroup cols="9" align="center"> 26 + <colspec align="left" colwidth="2*" /> 27 + <tbody valign="top"> 28 + <row> 29 + <entry>start&nbsp;+&nbsp;0:</entry> 30 + <entry>Y'<subscript>00low</subscript></entry> 31 + <entry>Y'<subscript>00high</subscript></entry> 32 + <entry>Y'<subscript>01low</subscript></entry> 33 + <entry>Y'<subscript>01high</subscript></entry> 34 + <entry>Y'<subscript>02low</subscript></entry> 35 + <entry>Y'<subscript>02high</subscript></entry> 36 + <entry>Y'<subscript>03low</subscript></entry> 37 + <entry>Y'<subscript>03high</subscript></entry> 38 + </row> 39 + <row> 40 + <entry>start&nbsp;+&nbsp;8:</entry> 41 + <entry>Y'<subscript>10low</subscript></entry> 42 + <entry>Y'<subscript>10high</subscript></entry> 43 + <entry>Y'<subscript>11low</subscript></entry> 44 + <entry>Y'<subscript>11high</subscript></entry> 45 + <entry>Y'<subscript>12low</subscript></entry> 46 + <entry>Y'<subscript>12high</subscript></entry> 47 + <entry>Y'<subscript>13low</subscript></entry> 48 + <entry>Y'<subscript>13high</subscript></entry> 49 + </row> 50 + <row> 51 + <entry>start&nbsp;+&nbsp;16:</entry> 52 + <entry>Y'<subscript>20low</subscript></entry> 53 + <entry>Y'<subscript>20high</subscript></entry> 54 + <entry>Y'<subscript>21low</subscript></entry> 55 + <entry>Y'<subscript>21high</subscript></entry> 56 + <entry>Y'<subscript>22low</subscript></entry> 57 + <entry>Y'<subscript>22high</subscript></entry> 58 + <entry>Y'<subscript>23low</subscript></entry> 59 + <entry>Y'<subscript>23high</subscript></entry> 60 + </row> 61 + <row> 62 + <entry>start&nbsp;+&nbsp;24:</entry> 63 + <entry>Y'<subscript>30low</subscript></entry> 64 + <entry>Y'<subscript>30high</subscript></entry> 65 + <entry>Y'<subscript>31low</subscript></entry> 66 + <entry>Y'<subscript>31high</subscript></entry> 67 + <entry>Y'<subscript>32low</subscript></entry> 68 + <entry>Y'<subscript>32high</subscript></entry> 69 + <entry>Y'<subscript>33low</subscript></entry> 70 + <entry>Y'<subscript>33high</subscript></entry> 71 + </row> 72 + </tbody> 73 + </tgroup> 74 + </informaltable> 75 + </para> 76 + </formalpara> 77 + </example> 78 + </refsect1> 79 + </refentry>
+1
Documentation/DocBook/v4l/pixfmt.xml
··· 696 696 &sub-packed-yuv; 697 697 &sub-grey; 698 698 &sub-y10; 699 + &sub-y12; 699 700 &sub-y16; 700 701 &sub-yuyv; 701 702 &sub-uyvy;
+1
include/linux/videodev2.h
··· 308 308 #define V4L2_PIX_FMT_Y4 v4l2_fourcc('Y', '0', '4', ' ') /* 4 Greyscale */ 309 309 #define V4L2_PIX_FMT_Y6 v4l2_fourcc('Y', '0', '6', ' ') /* 6 Greyscale */ 310 310 #define V4L2_PIX_FMT_Y10 v4l2_fourcc('Y', '1', '0', ' ') /* 10 Greyscale */ 311 + #define V4L2_PIX_FMT_Y12 v4l2_fourcc('Y', '1', '2', ' ') /* 12 Greyscale */ 311 312 #define V4L2_PIX_FMT_Y16 v4l2_fourcc('Y', '1', '6', ' ') /* 16 Greyscale */ 312 313 313 314 /* Palette formats */