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media: Add P010 tiled format

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Add P010 tiled format

[rebased, updated pixel format name and added description]

Tested-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Ezequiel Garcia 2022-07-06 19:28:55 +01:00 committed by Mauro Carvalho Chehab
parent 1fef11a2f4
commit 3c8e19d3d3
4 changed files with 18 additions and 3 deletions
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18
Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
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@ -116,6 +116,13 @@ All components are stored with the same number of bits per component.
- Cb, Cr
- Yes
- Linear
* - V4L2_PIX_FMT_P010_4L4
- 'T010'
- 10
- 4:2:0
- Cb, Cr
- Yes
- 4x4 tiles
* - V4L2_PIX_FMT_NV16
- 'NV16'
- 8
@ -528,11 +535,12 @@ number of lines as the luma plane.
- Cr\ :sub:`33`
.. _V4L2_PIX_FMT_P010:
.. _V4L2-PIX-FMT-P010-4L4:
P010
----
P010 and tiled P010
-------------------
Like NV12 with 10 bits per component, expanded to 16 bits.
P010 is like NV12 with 10 bits per component, expanded to 16 bits.
Data in the 10 high bits, zeros in the 6 low bits, arranged in little endian order.
.. flat-table:: Sample 4x4 P010 Image
@ -589,6 +597,10 @@ relationship between the luma and chroma line padding and stride.
All components are stored with the same number of bits per component.
``V4L2_PIX_FMT_P010_4L4`` stores pixels in 4x4 tiles, and stores tiles linearly
in memory. The line stride must be aligned to multiple of 8 and image height to
a multiple of 4. The layouts of the luma and chroma planes are identical.
.. raw:: latex
\small

1
drivers/media/v4l2-core/v4l2-common.c
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@ -278,6 +278,7 @@ const struct v4l2_format_info *v4l2_format_info(u32 format)
/* Tiled YUV formats */
{ .format = V4L2_PIX_FMT_NV12_4L4, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 1, 2, 0, 0 }, .hdiv = 2, .vdiv = 2 },
{ .format = V4L2_PIX_FMT_P010_4L4, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 2, 4, 0, 0 }, .hdiv = 2, .vdiv = 2 },
/* YUV planar formats, non contiguous variant */
{ .format = V4L2_PIX_FMT_YUV420M, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 3, .comp_planes = 3, .bpp = { 1, 1, 1, 0 }, .hdiv = 2, .vdiv = 2 },

1
drivers/media/v4l2-core/v4l2-ioctl.c
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@ -1357,6 +1357,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_NV12_4L4: descr = "Y/CbCr 4:2:0 (4x4 Linear)"; break;
case V4L2_PIX_FMT_NV12_16L16: descr = "Y/CbCr 4:2:0 (16x16 Linear)"; break;
case V4L2_PIX_FMT_NV12_32L32: descr = "Y/CbCr 4:2:0 (32x32 Linear)"; break;
case V4L2_PIX_FMT_P010_4L4: descr = "10-bit Y/CbCr 4:2:0 (4x4 Linear)"; break;
case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break;

1
include/uapi/linux/videodev2.h
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@ -654,6 +654,7 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_NV12_4L4 v4l2_fourcc('V', 'T', '1', '2') /* 12 Y/CbCr 4:2:0 4x4 tiles */
#define V4L2_PIX_FMT_NV12_16L16 v4l2_fourcc('H', 'M', '1', '2') /* 12 Y/CbCr 4:2:0 16x16 tiles */
#define V4L2_PIX_FMT_NV12_32L32 v4l2_fourcc('S', 'T', '1', '2') /* 12 Y/CbCr 4:2:0 32x32 tiles */
#define V4L2_PIX_FMT_P010_4L4 v4l2_fourcc('T', '0', '1', '0') /* 12 Y/CbCr 4:2:0 10-bit 4x4 macroblocks */
/* Tiled YUV formats, non contiguous planes */
#define V4L2_PIX_FMT_NV12MT v4l2_fourcc('T', 'M', '1', '2') /* 12 Y/CbCr 4:2:0 64x32 tiles */