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media: v4l: Add packed Bayer raw12 pixel formats 

These formats are compressed 12-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_SBGGR12P
	V4L2_PIX_FMT_SGBRG12P
	V4L2_PIX_FMT_SGRBG12P
	V4L2_PIX_FMT_SRGGB12P

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
hifive-unleashed-5.1
Sakari Ailus 2017-08-08 09:29:58 -04:00 committed by Mauro Carvalho Chehab
parent 0de0ef6c3f
commit d1b3437ed7
4 changed files with 117 additions and 4 deletions
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1
Documentation/media/uapi/v4l/pixfmt-rgb.rst
View File

@ -17,4 +17,5 @@ RGB Formats
pixfmt-srggb10alaw8
pixfmt-srggb10dpcm8
pixfmt-srggb12
pixfmt-srggb12p
pixfmt-srggb16

103
Documentation/media/uapi/v4l/pixfmt-srggb12p.rst 100644
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@ -0,0 +1,103 @@
.. -*- coding: utf-8; mode: rst -*-
.. _V4L2-PIX-FMT-SRGGB12P:
.. _v4l2-pix-fmt-sbggr12p:
.. _v4l2-pix-fmt-sgbrg12p:
.. _v4l2-pix-fmt-sgrbg12p:
*******************************************************************************************************************************
V4L2_PIX_FMT_SRGGB12P ('pRAA'), V4L2_PIX_FMT_SGRBG12P ('pgAA'), V4L2_PIX_FMT_SGBRG12P ('pGAA'), V4L2_PIX_FMT_SBGGR12P ('pBAA'),
*******************************************************************************************************************************
12-bit packed Bayer formats
Description
===========
These four pixel formats are packed raw sRGB / Bayer formats with 12
bits per colour. Every two consecutive samples are packed into three
bytes. Each of the first two bytes contain the 8 high order bits of
the pixels, and the third byte contains the four 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 a small V4L2_PIX_FMT_SBGGR12P image:
**Byte Order.**
Each cell is one byte.
.. flat-table::
:header-rows: 0
:stub-columns: 0
:widths: 2 1 1 1 1 1 1
- .. row 1
- start + 0:
- B\ :sub:`00high`
- G\ :sub:`01high`
- G\ :sub:`01low`\ (bits 7--4) B\ :sub:`00low`\ (bits 3--0)
- B\ :sub:`02high`
- G\ :sub:`03high`
- G\ :sub:`03low`\ (bits 7--4) B\ :sub:`02low`\ (bits 3--0)
- .. row 2
- start + 6:
- G\ :sub:`10high`
- R\ :sub:`11high`
- R\ :sub:`11low`\ (bits 7--4) G\ :sub:`10low`\ (bits 3--0)
- G\ :sub:`12high`
- R\ :sub:`13high`
- R\ :sub:`13low`\ (bits 3--2) G\ :sub:`12low`\ (bits 3--0)
- .. row 3
- start + 12:
- B\ :sub:`20high`
- G\ :sub:`21high`
- G\ :sub:`21low`\ (bits 7--4) B\ :sub:`20low`\ (bits 3--0)
- B\ :sub:`22high`
- G\ :sub:`23high`
- G\ :sub:`23low`\ (bits 7--4) B\ :sub:`22low`\ (bits 3--0)
- .. row 4
- start + 18:
- G\ :sub:`30high`
- R\ :sub:`31high`
- R\ :sub:`31low`\ (bits 7--4) G\ :sub:`30low`\ (bits 3--0)
- G\ :sub:`32high`
- R\ :sub:`33high`
- R\ :sub:`33low`\ (bits 3--2) G\ :sub:`32low`\ (bits 3--0)

12
drivers/media/v4l2-core/v4l2-ioctl.c
View File

@ -1195,10 +1195,6 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
@ -1211,6 +1207,14 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break;
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_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
View File

@ -603,6 +603,11 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_SGBRG12 v4l2_fourcc('G', 'B', '1', '2') /* 12 GBGB.. RGRG.. */
#define V4L2_PIX_FMT_SGRBG12 v4l2_fourcc('B', 'A', '1', '2') /* 12 GRGR.. BGBG.. */
#define V4L2_PIX_FMT_SRGGB12 v4l2_fourcc('R', 'G', '1', '2') /* 12 RGRG.. GBGB.. */
/* 12bit raw bayer packed, 6 bytes for every 4 pixels */
#define V4L2_PIX_FMT_SBGGR12P v4l2_fourcc('p', 'B', 'C', 'C')
#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')
#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.. */