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media: Add NV15_4L4 pixel format

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NV15_4L4 is the 10-bits per component 4x4 tiled format.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Benjamin Gaignard 2023-05-03 09:34:29 +01:00 committed by Mauro Carvalho Chehab
parent 86c256be58
commit fc91af0755
4 changed files with 20 additions and 0 deletions
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16
Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst
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@ -137,6 +137,13 @@ All components are stored with the same number of bits per component.
- Cb, Cr
- No
- Linear
* - V4L2_PIX_FMT_NV15_4L4
- 'VT15'
- 15
- 4:2:0
- Cb, Cr
- Yes
- 4x4 tiles
* - V4L2_PIX_FMT_NV16
- 'NV16'
- 8
@ -378,6 +385,15 @@ two non-contiguous planes.
Example V4L2_PIX_FMT_NV12MT memory layout of tiles
.. _V4L2-PIX-FMT-NV15-4L4:
Tiled NV15
----------
Semi-planar 10-bit YUV 4:2:0 formats, using 4x4 tiling.
All components are packed without any padding between each other.
As a side-effect, each group of 4 components are stored over 5 bytes
(YYYY or UVUV = 4 * 10 bits = 40 bits = 5 bytes).
.. _V4L2-PIX-FMT-NV16:
.. _V4L2-PIX-FMT-NV61:

2
drivers/media/v4l2-core/v4l2-common.c
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@ -283,6 +283,8 @@ 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 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
{ .format = V4L2_PIX_FMT_NV15_4L4, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 5, 10, 0, 0 }, .bpp_div = { 4, 4, 1, 1 }, .hdiv = 2, .vdiv = 2,
.block_w = { 4, 2, 0, 0 }, .block_h = { 1, 1, 0, 0 }},
{ .format = V4L2_PIX_FMT_P010_4L4, .pixel_enc = V4L2_PIXEL_ENC_YUV, .mem_planes = 1, .comp_planes = 2, .bpp = { 2, 4, 0, 0 }, .bpp_div = { 1, 1, 1, 1 }, .hdiv = 2, .vdiv = 2 },
/* YUV planar formats, non contiguous variant */

1
drivers/media/v4l2-core/v4l2-ioctl.c
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@ -1356,6 +1356,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_NV12_4L4: descr = "Y/UV 4:2:0 (4x4 Linear)"; break;
case V4L2_PIX_FMT_NV12_16L16: descr = "Y/UV 4:2:0 (16x16 Linear)"; break;
case V4L2_PIX_FMT_NV12_32L32: descr = "Y/UV 4:2:0 (32x32 Linear)"; break;
case V4L2_PIX_FMT_NV15_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break;
case V4L2_PIX_FMT_P010_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break;
case V4L2_PIX_FMT_NV12M: descr = "Y/UV 4:2:0 (N-C)"; break;
case V4L2_PIX_FMT_NV21M: descr = "Y/VU 4:2:0 (N-C)"; break;

1
include/uapi/linux/videodev2.h
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@ -672,6 +672,7 @@ 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_NV15_4L4 v4l2_fourcc('V', 'T', '1', '5') /* 15 Y/CbCr 4:2:0 10-bit 4x4 tiles */
#define V4L2_PIX_FMT_P010_4L4 v4l2_fourcc('T', '0', '1', '0') /* 12 Y/CbCr 4:2:0 10-bit 4x4 macroblocks */
#define V4L2_PIX_FMT_NV12_8L128 v4l2_fourcc('A', 'T', '1', '2') /* Y/CbCr 4:2:0 8x128 tiles */
#define V4L2_PIX_FMT_NV12_10BE_8L128 v4l2_fourcc_be('A', 'X', '1', '2') /* Y/CbCr 4:2:0 10-bit 8x128 tiles */