[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>
This commit is contained in:
Michael Jones
Mauro Carvalho Chehab
Родитель
5a3ddcde35
Коммит
d924de09ca
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@ -294,6 +294,7 @@
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<!ENTITY sub-srggb10 SYSTEM "v4l/pixfmt-srggb10.xml">
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<!ENTITY sub-srggb8 SYSTEM "v4l/pixfmt-srggb8.xml">
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<!ENTITY sub-y10 SYSTEM "v4l/pixfmt-y10.xml">
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<!ENTITY sub-y12 SYSTEM "v4l/pixfmt-y12.xml">
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<!ENTITY sub-pixfmt SYSTEM "v4l/pixfmt.xml">
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<!ENTITY sub-cropcap SYSTEM "v4l/vidioc-cropcap.xml">
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<!ENTITY sub-dbg-g-register SYSTEM "v4l/vidioc-dbg-g-register.xml">
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@ -0,0 +1,79 @@
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<refentry id="V4L2-PIX-FMT-Y12">
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<refmeta>
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<refentrytitle>V4L2_PIX_FMT_Y12 ('Y12 ')</refentrytitle>
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&manvol;
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</refmeta>
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<refnamediv>
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<refname><constant>V4L2_PIX_FMT_Y12</constant></refname>
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<refpurpose>Grey-scale image</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<para>This is a grey-scale image with a depth of 12 bits per pixel. Pixels
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are stored in 16-bit words with unused high bits padded with 0. The least
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significant byte is stored at lower memory addresses (little-endian).</para>
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<example>
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<title><constant>V4L2_PIX_FMT_Y12</constant> 4 × 4
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pixel image</title>
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<formalpara>
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<title>Byte Order.</title>
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<para>Each cell is one byte.
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<informaltable frame="none">
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<tgroup cols="9" align="center">
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<colspec align="left" colwidth="2*" />
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<tbody valign="top">
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<row>
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<entry>start + 0:</entry>
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<entry>Y'<subscript>00low</subscript></entry>
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<entry>Y'<subscript>00high</subscript></entry>
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<entry>Y'<subscript>01low</subscript></entry>
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<entry>Y'<subscript>01high</subscript></entry>
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<entry>Y'<subscript>02low</subscript></entry>
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<entry>Y'<subscript>02high</subscript></entry>
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<entry>Y'<subscript>03low</subscript></entry>
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<entry>Y'<subscript>03high</subscript></entry>
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</row>
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<row>
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<entry>start + 8:</entry>
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<entry>Y'<subscript>10low</subscript></entry>
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<entry>Y'<subscript>10high</subscript></entry>
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<entry>Y'<subscript>11low</subscript></entry>
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<entry>Y'<subscript>11high</subscript></entry>
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<entry>Y'<subscript>12low</subscript></entry>
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<entry>Y'<subscript>12high</subscript></entry>
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<entry>Y'<subscript>13low</subscript></entry>
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<entry>Y'<subscript>13high</subscript></entry>
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</row>
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<row>
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<entry>start + 16:</entry>
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<entry>Y'<subscript>20low</subscript></entry>
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<entry>Y'<subscript>20high</subscript></entry>
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<entry>Y'<subscript>21low</subscript></entry>
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<entry>Y'<subscript>21high</subscript></entry>
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<entry>Y'<subscript>22low</subscript></entry>
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<entry>Y'<subscript>22high</subscript></entry>
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<entry>Y'<subscript>23low</subscript></entry>
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<entry>Y'<subscript>23high</subscript></entry>
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</row>
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<row>
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<entry>start + 24:</entry>
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<entry>Y'<subscript>30low</subscript></entry>
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<entry>Y'<subscript>30high</subscript></entry>
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<entry>Y'<subscript>31low</subscript></entry>
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<entry>Y'<subscript>31high</subscript></entry>
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<entry>Y'<subscript>32low</subscript></entry>
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<entry>Y'<subscript>32high</subscript></entry>
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<entry>Y'<subscript>33low</subscript></entry>
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<entry>Y'<subscript>33high</subscript></entry>
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</row>
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</tbody>
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</tgroup>
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</informaltable>
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</para>
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</formalpara>
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</example>
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</refsect1>
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</refentry>
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@ -696,6 +696,7 @@ information.</para>
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&sub-packed-yuv;
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&sub-grey;
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&sub-y10;
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&sub-y12;
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&sub-y16;
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&sub-yuyv;
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&sub-uyvy;
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@ -308,6 +308,7 @@ struct v4l2_pix_format {
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#define V4L2_PIX_FMT_Y4 v4l2_fourcc('Y', '0', '4', ' ') /* 4 Greyscale */
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#define V4L2_PIX_FMT_Y6 v4l2_fourcc('Y', '0', '6', ' ') /* 6 Greyscale */
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#define V4L2_PIX_FMT_Y10 v4l2_fourcc('Y', '1', '0', ' ') /* 10 Greyscale */
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#define V4L2_PIX_FMT_Y12 v4l2_fourcc('Y', '1', '2', ' ') /* 12 Greyscale */
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#define V4L2_PIX_FMT_Y16 v4l2_fourcc('Y', '1', '6', ' ') /* 16 Greyscale */
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/* Palette formats */
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