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diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuv410.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuv410.rst new file mode 100644 index 000000000000..1d20115f2b1d --- /dev/null +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuv410.rst @@ -0,0 +1,134 @@ +.. 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-YVU410: +.. _v4l2-pix-fmt-yuv410: + +********************************************************** +V4L2_PIX_FMT_YVU410 ('YVU9'), V4L2_PIX_FMT_YUV410 ('YUV9') +********************************************************** + + +V4L2_PIX_FMT_YUV410 +Planar formats with ¼ horizontal and vertical chroma resolution, also +known as YUV 4:1:0 + + +Description +=========== + +These are planar formats, 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_YVU410``, +the Cr plane immediately follows the Y plane in memory. The Cr plane is +¼ the width and ¼ the height of the Y plane (and of the image). Each Cr +belongs to 16 pixels, a four-by-four square of the image. Following the +Cr plane is the Cb plane, just like the Cr plane. +``V4L2_PIX_FMT_YUV410`` is the same, except the Cb plane comes first, +then the Cr plane. + +If the Y plane has pad bytes after each row, then the Cr and Cb planes +have ¼ as many pad bytes after their rows. In other words, four Cx rows +(including padding) are exactly as long as one Y row (including +padding). + +**Byte Order.** +Each cell is one byte. + + + + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + + * - start + 0: + - Y'\ :sub:`00` + - Y'\ :sub:`01` + - Y'\ :sub:`02` + - Y'\ :sub:`03` + * - start + 4: + - Y'\ :sub:`10` + - Y'\ :sub:`11` + - Y'\ :sub:`12` + - Y'\ :sub:`13` + * - start + 8: + - Y'\ :sub:`20` + - Y'\ :sub:`21` + - Y'\ :sub:`22` + - Y'\ :sub:`23` + * - start + 12: + - Y'\ :sub:`30` + - Y'\ :sub:`31` + - Y'\ :sub:`32` + - Y'\ :sub:`33` + * - start + 16: + - Cr\ :sub:`00` + * - start + 17: + - Cb\ :sub:`00` + + +**Color Sample Location:** + + + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + + * - + - 0 + - + - 1 + - + - 2 + - + - 3 + * - 0 + - Y + - + - Y + - + - Y + - + - Y + * - + * - 1 + - Y + - + - Y + - + - Y + - + - Y + * - + - + - + - + - C + - + - + - + * - 2 + - Y + - + - Y + - + - Y + - + - Y + * - + * - 3 + - Y + - + - Y + - + - Y + - + - Y |