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[media] v4l: Add YUV 4:2:2 and YUV 4:4:4 tri-planar non-contiguous formats

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The formats use three planes through the multiplanar API, allowing for
non-contiguous planes in memory.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Laurent Pinchart 2015-11-11 22:02:00 -02:00 committed by Mauro Carvalho Chehab
parent 9662111253
commit d65fae92f9
5 changed files with 353 additions and 0 deletions
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166
Documentation/DocBook/media/v4l/pixfmt-yuv422m.xml Normal file
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@ -0,0 +1,166 @@
<refentry>
<refmeta>
<refentrytitle>V4L2_PIX_FMT_YUV422M ('YM16'), V4L2_PIX_FMT_YVU422M ('YM61')</refentrytitle>
&manvol;
</refmeta>
<refnamediv>
<refname id="V4L2-PIX-FMT-YUV422M"><constant>V4L2_PIX_FMT_YUV422M</constant></refname>
<refname id="V4L2-PIX-FMT-YVU422M"><constant>V4L2_PIX_FMT_YVU422M</constant></refname>
<refpurpose>Planar formats with &frac12; horizontal resolution, also
known as YUV and YVU 4:2:2</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>This is a multi-planar format, as opposed to a packed format.
The three components are separated into three sub-images or planes.</para>
<para>The Y plane is first. The Y plane has one byte per pixel.
For <constant>V4L2_PIX_FMT_YUV422M</constant> the Cb data
constitutes the second plane which is half the width of the Y plane (and of the
image). Each Cb belongs to two pixels. For example,
Cb<subscript>0</subscript> belongs to Y'<subscript>00</subscript>,
Y'<subscript>01</subscript>. The Cr data, just like the Cb plane, is
in the third plane. </para>
<para><constant>V4L2_PIX_FMT_YVU422M</constant> is the same except
the Cr data is stored in the second plane and the Cb data in the third plane.
</para>
<para>If the Y plane has pad bytes after each row, then the Cb
and Cr planes have half as many pad bytes after their rows. In other
words, two Cx rows (including padding) is exactly as long as one Y row
(including padding).</para>
<para><constant>V4L2_PIX_FMT_YUV422M</constant> and
<constant>V4L2_PIX_FMT_YVU422M</constant> are intended to be
used only in drivers and applications that support the multi-planar API,
described in <xref linkend="planar-apis"/>. </para>
<example>
<title><constant>V4L2_PIX_FMT_YUV422M</constant> 4 &times; 4
pixel image</title>
<formalpara>
<title>Byte Order.</title>
<para>Each cell is one byte.
<informaltable frame="none">
<tgroup cols="5" align="center">
<colspec align="left" colwidth="2*" />
<tbody valign="top">
<row>
<entry>start0&nbsp;+&nbsp;0:</entry>
<entry>Y'<subscript>00</subscript></entry>
<entry>Y'<subscript>01</subscript></entry>
<entry>Y'<subscript>02</subscript></entry>
<entry>Y'<subscript>03</subscript></entry>
</row>
<row>
<entry>start0&nbsp;+&nbsp;4:</entry>
<entry>Y'<subscript>10</subscript></entry>
<entry>Y'<subscript>11</subscript></entry>
<entry>Y'<subscript>12</subscript></entry>
<entry>Y'<subscript>13</subscript></entry>
</row>
<row>
<entry>start0&nbsp;+&nbsp;8:</entry>
<entry>Y'<subscript>20</subscript></entry>
<entry>Y'<subscript>21</subscript></entry>
<entry>Y'<subscript>22</subscript></entry>
<entry>Y'<subscript>23</subscript></entry>
</row>
<row>
<entry>start0&nbsp;+&nbsp;12:</entry>
<entry>Y'<subscript>30</subscript></entry>
<entry>Y'<subscript>31</subscript></entry>
<entry>Y'<subscript>32</subscript></entry>
<entry>Y'<subscript>33</subscript></entry>
</row>
<row><entry></entry></row>
<row>
<entry>start1&nbsp;+&nbsp;0:</entry>
<entry>Cb<subscript>00</subscript></entry>
<entry>Cb<subscript>01</subscript></entry>
</row>
<row>
<entry>start1&nbsp;+&nbsp;2:</entry>
<entry>Cb<subscript>10</subscript></entry>
<entry>Cb<subscript>11</subscript></entry>
</row>
<row>
<entry>start1&nbsp;+&nbsp;4:</entry>
<entry>Cb<subscript>20</subscript></entry>
<entry>Cb<subscript>21</subscript></entry>
</row>
<row>
<entry>start1&nbsp;+&nbsp;6:</entry>
<entry>Cb<subscript>30</subscript></entry>
<entry>Cb<subscript>31</subscript></entry>
</row>
<row><entry></entry></row>
<row>
<entry>start2&nbsp;+&nbsp;0:</entry>
<entry>Cr<subscript>00</subscript></entry>
<entry>Cr<subscript>01</subscript></entry>
</row>
<row>
<entry>start2&nbsp;+&nbsp;2:</entry>
<entry>Cr<subscript>10</subscript></entry>
<entry>Cr<subscript>11</subscript></entry>
</row>
<row>
<entry>start2&nbsp;+&nbsp;4:</entry>
<entry>Cr<subscript>20</subscript></entry>
<entry>Cr<subscript>21</subscript></entry>
</row>
<row>
<entry>start2&nbsp;+&nbsp;6:</entry>
<entry>Cr<subscript>30</subscript></entry>
<entry>Cr<subscript>31</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>

177
Documentation/DocBook/media/v4l/pixfmt-yuv444m.xml Normal file
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@ -0,0 +1,177 @@
<refentry>
<refmeta>
<refentrytitle>V4L2_PIX_FMT_YUV444M ('YM24'), V4L2_PIX_FMT_YVU444M ('YM42')</refentrytitle>
&manvol;
</refmeta>
<refnamediv>
<refname id="V4L2-PIX-FMT-YUV444M"><constant>V4L2_PIX_FMT_YUV444M</constant></refname>
<refname id="V4L2-PIX-FMT-YVU444M"><constant>V4L2_PIX_FMT_YVU444M</constant></refname>
<refpurpose>Planar formats with full horizontal resolution, also
known as YUV and YVU 4:4:4</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>This is a multi-planar format, as opposed to a packed format.
The three components are separated into three sub-images or planes.</para>
<para>The Y plane is first. The Y plane has one byte per pixel.
For <constant>V4L2_PIX_FMT_YUV444M</constant> the Cb data
constitutes the second plane which is the same width and height as the Y plane
(and as the image). The Cr data, just like the Cb plane, is in the third plane.
</para>
<para><constant>V4L2_PIX_FMT_YVU444M</constant> is the same except
the Cr data is stored in the second plane and the Cb data in the third plane.
</para>
<para>If the Y plane has pad bytes after each row, then the Cb
and Cr planes have the same number of pad bytes after their rows.</para>
<para><constant>V4L2_PIX_FMT_YUV444M</constant> and
<constant>V4L2_PIX_FMT_YUV444M</constant> are intended to be
used only in drivers and applications that support the multi-planar API,
described in <xref linkend="planar-apis"/>. </para>
<example>
<title><constant>V4L2_PIX_FMT_YUV444M</constant> 4 &times; 4
pixel image</title>
<formalpara>
<title>Byte Order.</title>
<para>Each cell is one byte.
<informaltable frame="none">
<tgroup cols="5" align="center">
<colspec align="left" colwidth="2*" />
<tbody valign="top">
<row>
<entry>start0&nbsp;+&nbsp;0:</entry>
<entry>Y'<subscript>00</subscript></entry>
<entry>Y'<subscript>01</subscript></entry>
<entry>Y'<subscript>02</subscript></entry>
<entry>Y'<subscript>03</subscript></entry>
</row>
<row>
<entry>start0&nbsp;+&nbsp;4:</entry>
<entry>Y'<subscript>10</subscript></entry>
<entry>Y'<subscript>11</subscript></entry>
<entry>Y'<subscript>12</subscript></entry>
<entry>Y'<subscript>13</subscript></entry>
</row>
<row>
<entry>start0&nbsp;+&nbsp;8:</entry>
<entry>Y'<subscript>20</subscript></entry>
<entry>Y'<subscript>21</subscript></entry>
<entry>Y'<subscript>22</subscript></entry>
<entry>Y'<subscript>23</subscript></entry>
</row>
<row>
<entry>start0&nbsp;+&nbsp;12:</entry>
<entry>Y'<subscript>30</subscript></entry>
<entry>Y'<subscript>31</subscript></entry>
<entry>Y'<subscript>32</subscript></entry>
<entry>Y'<subscript>33</subscript></entry>
</row>
<row><entry></entry></row>
<row>
<entry>start1&nbsp;+&nbsp;0:</entry>
<entry>Cb<subscript>00</subscript></entry>
<entry>Cb<subscript>01</subscript></entry>
<entry>Cb<subscript>02</subscript></entry>
<entry>Cb<subscript>03</subscript></entry>
</row>
<row>
<entry>start1&nbsp;+&nbsp;4:</entry>
<entry>Cb<subscript>10</subscript></entry>
<entry>Cb<subscript>11</subscript></entry>
<entry>Cb<subscript>12</subscript></entry>
<entry>Cb<subscript>13</subscript></entry>
</row>
<row>
<entry>start1&nbsp;+&nbsp;8:</entry>
<entry>Cb<subscript>20</subscript></entry>
<entry>Cb<subscript>21</subscript></entry>
<entry>Cb<subscript>22</subscript></entry>
<entry>Cb<subscript>23</subscript></entry>
</row>
<row>
<entry>start1&nbsp;+&nbsp;12:</entry>
<entry>Cb<subscript>20</subscript></entry>
<entry>Cb<subscript>21</subscript></entry>
<entry>Cb<subscript>32</subscript></entry>
<entry>Cb<subscript>33</subscript></entry>
</row>
<row><entry></entry></row>
<row>
<entry>start2&nbsp;+&nbsp;0:</entry>
<entry>Cr<subscript>00</subscript></entry>
<entry>Cr<subscript>01</subscript></entry>
<entry>Cr<subscript>02</subscript></entry>
<entry>Cr<subscript>03</subscript></entry>
</row>
<row>
<entry>start2&nbsp;+&nbsp;4:</entry>
<entry>Cr<subscript>10</subscript></entry>
<entry>Cr<subscript>11</subscript></entry>
<entry>Cr<subscript>12</subscript></entry>
<entry>Cr<subscript>13</subscript></entry>
</row>
<row>
<entry>start2&nbsp;+&nbsp;8:</entry>
<entry>Cr<subscript>20</subscript></entry>
<entry>Cr<subscript>21</subscript></entry>
<entry>Cr<subscript>22</subscript></entry>
<entry>Cr<subscript>23</subscript></entry>
</row>
<row>
<entry>start2&nbsp;+&nbsp;12:</entry>
<entry>Cr<subscript>30</subscript></entry>
<entry>Cr<subscript>31</subscript></entry>
<entry>Cr<subscript>32</subscript></entry>
<entry>Cr<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>YC</entry><entry></entry><entry>YC</entry><entry></entry>
<entry>YC</entry><entry></entry><entry>YC</entry>
</row>
<row>
<entry>1</entry>
<entry>YC</entry><entry></entry><entry>YC</entry><entry></entry>
<entry>YC</entry><entry></entry><entry>YC</entry>
</row>
<row>
<entry>2</entry>
<entry>YC</entry><entry></entry><entry>YC</entry><entry></entry>
<entry>YC</entry><entry></entry><entry>YC</entry>
</row>
<row>
<entry>3</entry>
<entry>YC</entry><entry></entry><entry>YC</entry><entry></entry>
<entry>YC</entry><entry></entry><entry>YC</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</para>
</formalpara>
</example>
</refsect1>
</refentry>

2
Documentation/DocBook/media/v4l/pixfmt.xml
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@ -1628,6 +1628,8 @@ information.</para>
&sub-y41p; &sub-y41p;
&sub-yuv420; &sub-yuv420;
&sub-yuv420m; &sub-yuv420m;
&sub-yuv422m;
&sub-yuv444m;
&sub-yuv410; &sub-yuv410;
&sub-yuv422p; &sub-yuv422p;
&sub-yuv411p; &sub-yuv411p;

4
drivers/media/v4l2-core/v4l2-ioctl.c
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@ -1191,6 +1191,10 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break; case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break;
case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break; case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break; case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break;
case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break;
case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break;
case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break;
case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break; case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break; case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break; case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;

4
include/uapi/linux/videodev2.h
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@ -546,6 +546,10 @@ struct v4l2_pix_format {
/* three non contiguous planes - Y, Cb, Cr */ /* three non contiguous planes - Y, Cb, Cr */
#define V4L2_PIX_FMT_YUV420M v4l2_fourcc('Y', 'M', '1', '2') /* 12 YUV420 planar */ #define V4L2_PIX_FMT_YUV420M v4l2_fourcc('Y', 'M', '1', '2') /* 12 YUV420 planar */
#define V4L2_PIX_FMT_YVU420M v4l2_fourcc('Y', 'M', '2', '1') /* 12 YVU420 planar */ #define V4L2_PIX_FMT_YVU420M v4l2_fourcc('Y', 'M', '2', '1') /* 12 YVU420 planar */
#define V4L2_PIX_FMT_YUV422M v4l2_fourcc('Y', 'M', '1', '6') /* 16 YUV422 planar */
#define V4L2_PIX_FMT_YVU422M v4l2_fourcc('Y', 'M', '6', '1') /* 16 YVU422 planar */
#define V4L2_PIX_FMT_YUV444M v4l2_fourcc('Y', 'M', '2', '4') /* 24 YUV444 planar */
#define V4L2_PIX_FMT_YVU444M v4l2_fourcc('Y', 'M', '4', '2') /* 24 YVU444 planar */
/* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */ /* Bayer formats - see http://www.siliconimaging.com/RGB%20Bayer.htm */
#define V4L2_PIX_FMT_SBGGR8 v4l2_fourcc('B', 'A', '8', '1') /* 8 BGBG.. GRGR.. */ #define V4L2_PIX_FMT_SBGGR8 v4l2_fourcc('B', 'A', '8', '1') /* 8 BGBG.. GRGR.. */