Commit 4353e36e authored by Aviv Greenberg's avatar Aviv Greenberg Committed by Mauro Carvalho Chehab
Browse files

[media] v4l: Add packed Bayer raw10 pixel formats 



These formats are just like 10-bit raw bayer formats that exist already, but
the pixels are not padded to byte boundaries. Instead, the eight high order
bits of four consecutive pixels are stored in four bytes, followed by a byte
of two low order bits of each of the four pixels.

Signed-off-by: default avatarAviv Greenberg <aviv.d.greenberg@intel.com>
Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent cbb77bc2

Documentation/DocBook/media/v4l/pixfmt-srggb10p.xml

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+99 −0
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    <refentry id="pixfmt-srggb10p">

      <refmeta>

	<refentrytitle>V4L2_PIX_FMT_SRGGB10P ('pRAA'),

	 V4L2_PIX_FMT_SGRBG10P ('pgAA'),

	 V4L2_PIX_FMT_SGBRG10P ('pGAA'),

	 V4L2_PIX_FMT_SBGGR10P ('pBAA'),

	 </refentrytitle>

	&manvol;

      </refmeta>

      <refnamediv>

	<refname id="V4L2-PIX-FMT-SRGGB10P"><constant>V4L2_PIX_FMT_SRGGB10P</constant></refname>

	<refname id="V4L2-PIX-FMT-SGRBG10P"><constant>V4L2_PIX_FMT_SGRBG10P</constant></refname>

	<refname id="V4L2-PIX-FMT-SGBRG10P"><constant>V4L2_PIX_FMT_SGBRG10P</constant></refname>

	<refname id="V4L2-PIX-FMT-SBGGR10P"><constant>V4L2_PIX_FMT_SBGGR10P</constant></refname>

	<refpurpose>10-bit packed Bayer formats</refpurpose>

      </refnamediv>

      <refsect1>

	<title>Description</title>



	<para>These four pixel formats are packed raw sRGB /

	Bayer formats with 10 bits per colour. Every four consecutive

	colour components are packed into 5 bytes. Each of the first 4

	bytes contain the 8 high order bits of the pixels, and the

	fifth byte contains the two least significants bits of each

	pixel, in the same order.</para>



	<para>Each n-pixel row contains n/2 green samples and n/2 blue

	or red samples, with alternating green-red and green-blue

	rows. They are conventionally described as GRGR... BGBG...,

	RGRG... GBGB..., etc. Below is an example of one of these

	formats:</para>



    <example>

      <title><constant>V4L2_PIX_FMT_SBGGR10P</constant> 4 &times; 4

      pixel image</title>



      <formalpara>

	<title>Byte Order.</title>

	<para>Each cell is one byte.

	  <informaltable frame="topbot" colsep="1" rowsep="1">

	    <tgroup cols="5" align="center" border="1">

	      <colspec align="left" colwidth="2*" />

	      <tbody valign="top">

		<row>

		  <entry>start&nbsp;+&nbsp;0:</entry>

		  <entry>B<subscript>00high</subscript></entry>

		  <entry>G<subscript>01high</subscript></entry>

		  <entry>B<subscript>02high</subscript></entry>

		  <entry>G<subscript>03high</subscript></entry>

		  <entry>B<subscript>00low</subscript>(bits 7--6)

			 G<subscript>01low</subscript>(bits 5--4)

			 B<subscript>02low</subscript>(bits 3--2)

			 G<subscript>03low</subscript>(bits 1--0)

		  </entry>

		</row>

		<row>

		  <entry>start&nbsp;+&nbsp;5:</entry>

		  <entry>G<subscript>10high</subscript></entry>

		  <entry>R<subscript>11high</subscript></entry>

		  <entry>G<subscript>12high</subscript></entry>

		  <entry>R<subscript>13high</subscript></entry>

		  <entry>G<subscript>10low</subscript>(bits 7--6)

			 R<subscript>11low</subscript>(bits 5--4)

			 G<subscript>12low</subscript>(bits 3--2)

			 R<subscript>13low</subscript>(bits 1--0)

		  </entry>

		</row>

		<row>

		  <entry>start&nbsp;+&nbsp;10:</entry>

		  <entry>B<subscript>20high</subscript></entry>

		  <entry>G<subscript>21high</subscript></entry>

		  <entry>B<subscript>22high</subscript></entry>

		  <entry>G<subscript>23high</subscript></entry>

		  <entry>B<subscript>20low</subscript>(bits 7--6)

			 G<subscript>21low</subscript>(bits 5--4)

			 B<subscript>22low</subscript>(bits 3--2)

			 G<subscript>23low</subscript>(bits 1--0)

		  </entry>

		</row>

		<row>

		  <entry>start&nbsp;+&nbsp;15:</entry>

		  <entry>G<subscript>30high</subscript></entry>

		  <entry>R<subscript>31high</subscript></entry>

		  <entry>G<subscript>32high</subscript></entry>

		  <entry>R<subscript>33high</subscript></entry>

		  <entry>G<subscript>30low</subscript>(bits 7--6)

			 R<subscript>31low</subscript>(bits 5--4)

			 G<subscript>32low</subscript>(bits 3--2)

			 R<subscript>33low</subscript>(bits 1--0)

		  </entry>

		</row>

	      </tbody>

	    </tgroup>

	  </informaltable>

	</para>

      </formalpara>

    </example>

  </refsect1>

</refentry>

Documentation/DocBook/media/v4l/pixfmt.xml

+1 −0
Original line number Diff line number Diff line
@@ -1405,6 +1405,7 @@ access the palette, this must be done with ioctls of the Linux framebuffer API.< 
    &sub-srggb8;

    &sub-sbggr16;

    &sub-srggb10;

    &sub-srggb10p;

    &sub-srggb10alaw8;

    &sub-srggb10dpcm8;

    &sub-srggb12;

include/uapi/linux/videodev2.h

+5 −0
Original line number Diff line number Diff line
@@ -463,6 +463,11 @@ struct v4l2_pix_format { 
#define V4L2_PIX_FMT_SGBRG10 v4l2_fourcc('G', 'B', '1', '0') /* 10  GBGB.. RGRG.. */

#define V4L2_PIX_FMT_SGRBG10 v4l2_fourcc('B', 'A', '1', '0') /* 10  GRGR.. BGBG.. */

#define V4L2_PIX_FMT_SRGGB10 v4l2_fourcc('R', 'G', '1', '0') /* 10  RGRG.. GBGB.. */

	/* 10bit raw bayer packed, 5 bytes for every 4 pixels */

#define V4L2_PIX_FMT_SBGGR10P v4l2_fourcc('p', 'B', 'A', 'A')

#define V4L2_PIX_FMT_SGBRG10P v4l2_fourcc('p', 'G', 'A', 'A')

#define V4L2_PIX_FMT_SGRBG10P v4l2_fourcc('p', 'g', 'A', 'A')

#define V4L2_PIX_FMT_SRGGB10P v4l2_fourcc('p', 'R', 'A', 'A')

	/* 10bit raw bayer a-law compressed to 8 bits */

#define V4L2_PIX_FMT_SBGGR10ALAW8 v4l2_fourcc('a', 'B', 'A', '8')

#define V4L2_PIX_FMT_SGBRG10ALAW8 v4l2_fourcc('a', 'G', 'A', '8')

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