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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-03 20:59:38 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-06-03 20:59:38 -0700 |
commit | a98f670e41a99f53acb1fb33cee9c6abbb2e6f23 (patch) | |
tree | f8ae10a4cb91758ad7f9422053753a8c5d0f04dc /Documentation/userspace-api/media/v4l/pixfmt-yuv444m.rst | |
parent | ee01c4d72adffb7d424535adf630f2955748fa8b (diff) | |
parent | 938b29db3aa9c293c7c1366b16e55e308f1a1ddd (diff) | |
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Merge tag 'media/v5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- Media documentation is now split into admin-guide, driver-api and
userspace-api books (a longstanding request from Jon);
- The media Kconfig was reorganized, in order to make easier to select
drivers and their dependencies;
- The testing drivers now has a separate directory;
- added a new driver for Rockchip Video Decoder IP;
- The atomisp staging driver was resurrected. It is meant to work with
4 generations of cameras on Atom-based laptops, tablets and cell
phones. So, it seems worth investing time to cleanup this driver and
making it in good shape.
- Added some V4L2 core ancillary routines to help with h264 codecs;
- Added an ov2740 image sensor driver;
- The si2157 gained support for Analog TV, which, in turn, added
support for some cx231xx and cx23885 boards to also support analog
standards;
- Added some V4L2 controls (V4L2_CID_CAMERA_ORIENTATION and
V4L2_CID_CAMERA_SENSOR_ROTATION) to help identifying where the camera
is located at the device;
- VIDIOC_ENUM_FMT was extended to support MC-centric devices;
- Lots of drivers improvements and cleanups.
* tag 'media/v5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (503 commits)
media: Documentation: media: Refer to mbus format documentation from CSI-2 docs
media: s5k5baf: Replace zero-length array with flexible-array
media: i2c: imx219: Drop <linux/clk-provider.h> and <linux/clkdev.h>
media: i2c: Add ov2740 image sensor driver
media: ov8856: Implement sensor module revision identification
media: ov8856: Add devicetree support
media: dt-bindings: ov8856: Document YAML bindings
media: dvb-usb: Add Cinergy S2 PCIe Dual Port support
media: dvbdev: Fix tuner->demod media controller link
media: dt-bindings: phy: phy-rockchip-dphy-rx0: move rockchip dphy rx0 bindings out of staging
media: staging: dt-bindings: phy-rockchip-dphy-rx0: remove non-used reg property
media: atomisp: unify the version for isp2401 a0 and b0 versions
media: atomisp: update TODO with the current data
media: atomisp: adjust some code at sh_css that could be broken
media: atomisp: don't produce errs for ignored IRQs
media: atomisp: print IRQ when debugging
media: atomisp: isp_mmu: don't use kmem_cache
media: atomisp: add a notice about possible leak resources
media: atomisp: disable the dynamic and reserved pools
media: atomisp: turn on camera before setting it
...
Diffstat (limited to 'Documentation/userspace-api/media/v4l/pixfmt-yuv444m.rst')
-rw-r--r-- | Documentation/userspace-api/media/v4l/pixfmt-yuv444m.rst | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv444m.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv444m.rst new file mode 100644 index 000000000000..7073ac7f842d --- /dev/null +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv444m.rst @@ -0,0 +1,148 @@ +.. Permission is granted to copy, distribute and/or modify this +.. document under the terms of the GNU Free Documentation License, +.. Version 1.1 or any later version published by the Free Software +.. Foundation, with no Invariant Sections, no Front-Cover Texts +.. and no Back-Cover Texts. A copy of the license is included at +.. Documentation/userspace-api/media/fdl-appendix.rst. +.. +.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections + +.. _V4L2-PIX-FMT-YUV444M: +.. _v4l2-pix-fmt-yvu444m: + +************************************************************ +V4L2_PIX_FMT_YUV444M ('YM24'), V4L2_PIX_FMT_YVU444M ('YM42') +************************************************************ + + +V4L2_PIX_FMT_YVU444M +Planar formats with full horizontal resolution, also known as YUV and +YVU 4:4:4 + + +Description +=========== + +This is a multi-planar format, as opposed to a packed format. The three +components are separated into three sub-images or planes. + +The Y plane is first. The Y plane has one byte per pixel. For +``V4L2_PIX_FMT_YUV444M`` the Cb data constitutes the second plane which +is the same width and height as the Y plane (and as the image). The Cr +data, just like the Cb plane, is in the third plane. + +``V4L2_PIX_FMT_YVU444M`` is the same except the Cr data is stored in the +second plane and the Cb data in the third plane. + +If the Y plane has pad bytes after each row, then the Cb and Cr planes +have the same number of pad bytes after their rows. + +``V4L2_PIX_FMT_YUV444M`` and ``V4L2_PIX_FMT_YUV444M`` are intended to be +used only in drivers and applications that support the multi-planar API, +described in :ref:`planar-apis`. + +**Byte Order.** +Each cell is one byte. + + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + + * - start0 + 0: + - Y'\ :sub:`00` + - Y'\ :sub:`01` + - Y'\ :sub:`02` + - Y'\ :sub:`03` + * - start0 + 4: + - Y'\ :sub:`10` + - Y'\ :sub:`11` + - Y'\ :sub:`12` + - Y'\ :sub:`13` + * - start0 + 8: + - Y'\ :sub:`20` + - Y'\ :sub:`21` + - Y'\ :sub:`22` + - Y'\ :sub:`23` + * - start0 + 12: + - Y'\ :sub:`30` + - Y'\ :sub:`31` + - Y'\ :sub:`32` + - Y'\ :sub:`33` + * - + * - start1 + 0: + - Cb\ :sub:`00` + - Cb\ :sub:`01` + - Cb\ :sub:`02` + - Cb\ :sub:`03` + * - start1 + 4: + - Cb\ :sub:`10` + - Cb\ :sub:`11` + - Cb\ :sub:`12` + - Cb\ :sub:`13` + * - start1 + 8: + - Cb\ :sub:`20` + - Cb\ :sub:`21` + - Cb\ :sub:`22` + - Cb\ :sub:`23` + * - start1 + 12: + - Cb\ :sub:`20` + - Cb\ :sub:`21` + - Cb\ :sub:`32` + - Cb\ :sub:`33` + * - + * - start2 + 0: + - Cr\ :sub:`00` + - Cr\ :sub:`01` + - Cr\ :sub:`02` + - Cr\ :sub:`03` + * - start2 + 4: + - Cr\ :sub:`10` + - Cr\ :sub:`11` + - Cr\ :sub:`12` + - Cr\ :sub:`13` + * - start2 + 8: + - Cr\ :sub:`20` + - Cr\ :sub:`21` + - Cr\ :sub:`22` + - Cr\ :sub:`23` + * - start2 + 12: + - Cr\ :sub:`30` + - Cr\ :sub:`31` + - Cr\ :sub:`32` + - Cr\ :sub:`33` + + +**Color Sample Location:** + + + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + + * - + - 0 + - 1 + - 2 + - 3 + * - 0 + - YC + - YC + - YC + - YC + * - 1 + - YC + - YC + - YC + - YC + * - 2 + - YC + - YC + - YC + - YC + * - 3 + - YC + - YC + - YC + - YC |