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UPSTREAM: media: Add YUV48_12 video format

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YUV48_12 is a YUV format with 12-bits per component like YUV24,
expanded to 16bits.
Data in the 12 high bits, zeros in the 4 low bits,
arranged in little endian order.

[hverkuil: replaced a . by ,]

Bug: 293213303
Change-Id: I12e6f02b99918a429224320da2127d6b4d777584
(cherry picked from commit 99c954967762976b15265ea383354095e1ed1efa)
Signed-off-by: Ming Qian <ming.qian@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Jindong Yue <jindong.yue@nxp.com>
This commit is contained in:
Ming Qian 2023-03-22 05:13:07 +00:00 committed by Carlos Llamas
parent b2cf7e4268
commit 892293272c
4 changed files with 31 additions and 0 deletions
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28
Documentation/userspace-api/media/v4l/pixfmt-packed-yuv.rst
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@ -257,6 +257,34 @@ the second byte and Y'\ :sub:`7-0` in the third byte.
- The padding bits contain undefined values that must be ignored by all
applications and drivers.
The next table lists the packed YUV 4:4:4 formats with 12 bits per component.
Expand the bits per component to 16 bits, data in the high bits, zeros in the low bits,
arranged in little endian order, storing 1 pixel in 6 bytes.
.. flat-table:: Packed YUV 4:4:4 Image Formats (12bpc)
:header-rows: 1
:stub-columns: 0
* - Identifier
- Code
- Byte 1-0
- Byte 3-2
- Byte 5-4
- Byte 7-6
- Byte 9-8
- Byte 11-10
* .. _V4L2-PIX-FMT-YUV48-12:
- ``V4L2_PIX_FMT_YUV48_12``
- 'Y312'
- Y'\ :sub:`0`
- Cb\ :sub:`0`
- Cr\ :sub:`0`
- Y'\ :sub:`1`
- Cb\ :sub:`1`
- Cr\ :sub:`1`
4:2:2 Subsampling
=================

1
drivers/media/v4l2-core/v4l2-common.c
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@ -259,6 +259,7 @@ const struct v4l2_format_info *v4l2_format_info(u32 format)
{ .format = V4L2_PIX_FMT_UYVY, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_VYUY, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 2, 0, 0, 0 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_Y212, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 4, 0, 0, 0 }, .hdiv = 2, .vdiv = 1 },
{ .format = V4L2_PIX_FMT_YUV48_12, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 1, .bpp = { 6, 0, 0, 0 }, .hdiv = 1, .vdiv = 1 },
/* YUV planar formats */
{ .format = V4L2_PIX_FMT_NV12, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 2, .vdiv = 2 },

1
drivers/media/v4l2-core/v4l2-ioctl.c
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@ -1348,6 +1348,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
case V4L2_PIX_FMT_YUV48_12: descr = "12-bit YUV 4:4:4 Packed"; break;
case V4L2_PIX_FMT_NV12: descr = "Y/UV 4:2:0"; break;
case V4L2_PIX_FMT_NV21: descr = "Y/VU 4:2:0"; break;
case V4L2_PIX_FMT_NV16: descr = "Y/UV 4:2:2"; break;

1
include/uapi/linux/videodev2.h
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@ -618,6 +618,7 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_YUVA32 v4l2_fourcc('Y', 'U', 'V', 'A') /* 32 YUVA-8-8-8-8 */
#define V4L2_PIX_FMT_YUVX32 v4l2_fourcc('Y', 'U', 'V', 'X') /* 32 YUVX-8-8-8-8 */
#define V4L2_PIX_FMT_M420 v4l2_fourcc('M', '4', '2', '0') /* 12 YUV 4:2:0 2 lines y, 1 line uv interleaved */
#define V4L2_PIX_FMT_YUV48_12 v4l2_fourcc('Y', '3', '1', '2') /* 48 YUV 4:4:4 12-bit per component */
/*
* YCbCr packed format. For each Y2xx format, xx bits of valid data occupy the MSBs