1.. Permission is granted to copy, distribute and/or modify this 2.. document under the terms of the GNU Free Documentation License, 3.. Version 1.1 or any later version published by the Free Software 4.. Foundation, with no Invariant Sections, no Front-Cover Texts 5.. and no Back-Cover Texts. A copy of the license is included at 6.. Documentation/media/uapi/fdl-appendix.rst. 7.. 8.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections 9 10.. _V4L2-PIX-FMT-YUV411P: 11 12***************************** 13V4L2_PIX_FMT_YUV411P ('411P') 14***************************** 15 16 17Format with ¼ horizontal chroma resolution, also known as YUV 4:1:1. 18Planar layout as opposed to ``V4L2_PIX_FMT_Y41P`` 19 20 21Description 22=========== 23 24This format is not commonly used. This is a planar format similar to the 254:2:2 planar format except with half as many chroma. The three 26components are separated into three sub-images or planes. The Y plane is 27first. The Y plane has one byte per pixel. The Cb plane immediately 28follows the Y plane in memory. The Cb plane is ¼ the width of the Y 29plane (and of the image). Each Cb belongs to 4 pixels all on the same 30row. For example, Cb\ :sub:`0` belongs to Y'\ :sub:`00`, Y'\ :sub:`01`, 31Y'\ :sub:`02` and Y'\ :sub:`03`. Following the Cb plane is the Cr plane, 32just like the Cb plane. 33 34If the Y plane has pad bytes after each row, then the Cr and Cb planes 35have ¼ as many pad bytes after their rows. In other words, four C x rows 36(including padding) is exactly as long as one Y row (including padding). 37 38**Byte Order.** 39Each cell is one byte. 40 41 42 43.. flat-table:: 44 :header-rows: 0 45 :stub-columns: 0 46 47 * - start + 0: 48 - Y'\ :sub:`00` 49 - Y'\ :sub:`01` 50 - Y'\ :sub:`02` 51 - Y'\ :sub:`03` 52 * - start + 4: 53 - Y'\ :sub:`10` 54 - Y'\ :sub:`11` 55 - Y'\ :sub:`12` 56 - Y'\ :sub:`13` 57 * - start + 8: 58 - Y'\ :sub:`20` 59 - Y'\ :sub:`21` 60 - Y'\ :sub:`22` 61 - Y'\ :sub:`23` 62 * - start + 12: 63 - Y'\ :sub:`30` 64 - Y'\ :sub:`31` 65 - Y'\ :sub:`32` 66 - Y'\ :sub:`33` 67 * - start + 16: 68 - Cb\ :sub:`00` 69 * - start + 17: 70 - Cb\ :sub:`10` 71 * - start + 18: 72 - Cb\ :sub:`20` 73 * - start + 19: 74 - Cb\ :sub:`30` 75 * - start + 20: 76 - Cr\ :sub:`00` 77 * - start + 21: 78 - Cr\ :sub:`10` 79 * - start + 22: 80 - Cr\ :sub:`20` 81 * - start + 23: 82 - Cr\ :sub:`30` 83 84 85**Color Sample Location:** 86 87 88 89.. flat-table:: 90 :header-rows: 0 91 :stub-columns: 0 92 93 * - 94 - 0 95 - 1 96 - 97 - 2 98 - 3 99 * - 0 100 - Y 101 - Y 102 - C 103 - Y 104 - Y 105 * - 1 106 - Y 107 - Y 108 - C 109 - Y 110 - Y 111 * - 2 112 - Y 113 - Y 114 - C 115 - Y 116 - Y 117 * - 3 118 - Y 119 - Y 120 - C 121 - Y 122 - Y 123