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| author | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-03-04 10:21:39 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-04-14 10:31:49 +0200 |
| commit | 54f38fcae536ea202ce7d6a359521492fba30c1f (patch) | |
| tree | dd1a2b36d8de0b13702f2716526ad3b91650e090 /Documentation/media/uapi/v4l/yuv-formats.rst | |
| parent | 5dfb8db56b273740a76e8687ee7efb4b2c0ec83b (diff) | |
media: docs: move uAPI book to userspace-api/media
Since 2017, there is an space reserved for userspace API,
created by changeset 1d596dee3862 ("docs: Create a user-space API guide").
As the media subsystem was one of the first subsystems to use
Sphinx, until this patch, we were keeping things on a separate
place.
Let's just use the new location, as having all uAPI altogether
will likely make things easier for developers.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'Documentation/media/uapi/v4l/yuv-formats.rst')
| -rw-r--r-- | Documentation/media/uapi/v4l/yuv-formats.rst | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/Documentation/media/uapi/v4l/yuv-formats.rst b/Documentation/media/uapi/v4l/yuv-formats.rst deleted file mode 100644 index 3b259e31b7a1..000000000000 --- a/Documentation/media/uapi/v4l/yuv-formats.rst +++ /dev/null @@ -1,64 +0,0 @@ -.. 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/media/uapi/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections - -.. _yuv-formats: - -*********** -YUV Formats -*********** - -YUV is the format native to TV broadcast and composite video signals. It -separates the brightness information (Y) from the color information (U -and V or Cb and Cr). The color information consists of red and blue -*color difference* signals, this way the green component can be -reconstructed by subtracting from the brightness component. See -:ref:`colorspaces` for conversion examples. YUV was chosen because -early television would only transmit brightness information. To add -color in a way compatible with existing receivers a new signal carrier -was added to transmit the color difference signals. Secondary in the YUV -format the U and V components usually have lower resolution than the Y -component. This is an analog video compression technique taking -advantage of a property of the human visual system, being more sensitive -to brightness information. - - -.. toctree:: - :maxdepth: 1 - - pixfmt-packed-yuv - pixfmt-grey - pixfmt-y10 - pixfmt-y12 - pixfmt-y14 - pixfmt-y10b - pixfmt-y10p - pixfmt-y16 - pixfmt-y16-be - pixfmt-y8i - pixfmt-y12i - pixfmt-uv8 - pixfmt-yuyv - pixfmt-uyvy - pixfmt-yvyu - pixfmt-vyuy - pixfmt-y41p - pixfmt-yuv420 - pixfmt-yuv420m - pixfmt-yuv422m - pixfmt-yuv444m - pixfmt-yuv410 - pixfmt-yuv422p - pixfmt-yuv411p - pixfmt-nv12 - pixfmt-nv12m - pixfmt-nv12mt - pixfmt-nv16 - pixfmt-nv16m - pixfmt-nv24 - pixfmt-m420 |