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media: doc-rst: Add packed Bayer raw14 pixel formats

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These formats are compressed 14-bit raw bayer formats with four different
pixel orders. They are similar to 10-bit variants. The formats added by
this patch are

	V4L2_PIX_FMT_SBGGR14P
	V4L2_PIX_FMT_SGBRG14P
	V4L2_PIX_FMT_SGRBG14P
	V4L2_PIX_FMT_SRGGB14P

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Todor Tomov <todor.tomov@linaro.org>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Sakari Ailus 2018-07-25 12:38:10 -04:00 committed by Mauro Carvalho Chehab
parent bef1fa6ea7
commit 83b15832ab
4 changed files with 137 additions and 0 deletions
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1
Documentation/media/uapi/v4l/pixfmt-rgb.rst
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@ -19,4 +19,5 @@ RGB Formats
pixfmt-srggb10-ipu3
pixfmt-srggb12
pixfmt-srggb12p
pixfmt-srggb14p
pixfmt-srggb16

127
Documentation/media/uapi/v4l/pixfmt-srggb14p.rst Normal file
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@ -0,0 +1,127 @@
.. -*- coding: utf-8; mode: rst -*-
.. _V4L2-PIX-FMT-SRGGB14P:
.. _v4l2-pix-fmt-sbggr14p:
.. _v4l2-pix-fmt-sgbrg14p:
.. _v4l2-pix-fmt-sgrbg14p:
*******************************************************************************************************************************
V4L2_PIX_FMT_SRGGB14P ('pRCC'), V4L2_PIX_FMT_SGRBG14P ('pgCC'), V4L2_PIX_FMT_SGBRG14P ('pGCC'), V4L2_PIX_FMT_SBGGR14P ('pBCC'),
*******************************************************************************************************************************
*man V4L2_PIX_FMT_SRGGB14P(2)*
V4L2_PIX_FMT_SGRBG14P
V4L2_PIX_FMT_SGBRG14P
V4L2_PIX_FMT_SBGGR14P
14-bit packed Bayer formats
Description
===========
These four pixel formats are packed raw sRGB / Bayer formats with 14
bits per colour. Every four consecutive samples are packed into seven
bytes. Each of the first four bytes contain the eight high order bits
of the pixels, and the three following bytes contains the six least
significants bits of each pixel, in the same order.
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:
**Byte Order.**
Each cell is one byte.
.. flat-table::
:header-rows: 0
:stub-columns: 0
:widths: 2 1 1 1 1 1 1 1
- .. row 1
- start + 0:
- B\ :sub:`00high`
- G\ :sub:`01high`
- B\ :sub:`02high`
- G\ :sub:`03high`
- G\ :sub:`01low bits 1--0`\ (bits 7--6)
B\ :sub:`00low bits 5--0`\ (bits 5--0)
- R\ :sub:`02low bits 3--0`\ (bits 7--4)
G\ :sub:`01low bits 5--2`\ (bits 3--0)
- G\ :sub:`03low bits 5--0`\ (bits 7--2)
R\ :sub:`02low bits 5--4`\ (bits 1--0)
- .. row 2
- start + 7:
- G\ :sub:`00high`
- R\ :sub:`01high`
- G\ :sub:`02high`
- R\ :sub:`03high`
- R\ :sub:`01low bits 1--0`\ (bits 7--6)
G\ :sub:`00low bits 5--0`\ (bits 5--0)
- G\ :sub:`02low bits 3--0`\ (bits 7--4)
R\ :sub:`01low bits 5--2`\ (bits 3--0)
- R\ :sub:`03low bits 5--0`\ (bits 7--2)
G\ :sub:`02low bits 5--4`\ (bits 1--0)
- .. row 3
- start + 14
- B\ :sub:`20high`
- G\ :sub:`21high`
- B\ :sub:`22high`
- G\ :sub:`23high`
- G\ :sub:`21low bits 1--0`\ (bits 7--6)
B\ :sub:`20low bits 5--0`\ (bits 5--0)
- R\ :sub:`22low bits 3--0`\ (bits 7--4)
G\ :sub:`21low bits 5--2`\ (bits 3--0)
- G\ :sub:`23low bits 5--0`\ (bits 7--2)
R\ :sub:`22low bits 5--4`\ (bits 1--0)
- .. row 4
- start + 21
- G\ :sub:`30high`
- R\ :sub:`31high`
- G\ :sub:`32high`
- R\ :sub:`33high`
- R\ :sub:`31low bits 1--0`\ (bits 7--6)
G\ :sub:`30low bits 5--0`\ (bits 5--0)
- G\ :sub:`32low bits 3--0`\ (bits 7--4)
R\ :sub:`31low bits 5--2`\ (bits 3--0)
- R\ :sub:`33low bits 5--0`\ (bits 7--2)
G\ :sub:`32low bits 5--4`\ (bits 1--0)

4
drivers/media/v4l2-core/v4l2-ioctl.c
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@ -1259,6 +1259,10 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break;
case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break;
case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break;
case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break;
case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break;
case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break;
case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break;
case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break;
case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break;
case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break;

5
include/uapi/linux/videodev2.h
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@ -609,6 +609,11 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_SGBRG12P v4l2_fourcc('p', 'G', 'C', 'C')
#define V4L2_PIX_FMT_SGRBG12P v4l2_fourcc('p', 'g', 'C', 'C')
#define V4L2_PIX_FMT_SRGGB12P v4l2_fourcc('p', 'R', 'C', 'C')
/* 14bit raw bayer packed, 7 bytes for every 4 pixels */
#define V4L2_PIX_FMT_SBGGR14P v4l2_fourcc('p', 'B', 'E', 'E')
#define V4L2_PIX_FMT_SGBRG14P v4l2_fourcc('p', 'G', 'E', 'E')
#define V4L2_PIX_FMT_SGRBG14P v4l2_fourcc('p', 'g', 'E', 'E')
#define V4L2_PIX_FMT_SRGGB14P v4l2_fourcc('p', 'R', 'E', 'E')
#define V4L2_PIX_FMT_SBGGR16 v4l2_fourcc('B', 'Y', 'R', '2') /* 16 BGBG.. GRGR.. */
#define V4L2_PIX_FMT_SGBRG16 v4l2_fourcc('G', 'B', '1', '6') /* 16 GBGB.. RGRG.. */
#define V4L2_PIX_FMT_SGRBG16 v4l2_fourcc('G', 'R', '1', '6') /* 16 GRGR.. BGBG.. */