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-YUV422P: 11 12***************************** 13V4L2_PIX_FMT_YUV422P ('422P') 14***************************** 15 16 17Format with ½ horizontal chroma resolution, also known as YUV 4:2:2. 18Planar layout as opposed to ``V4L2_PIX_FMT_YUYV`` 19 20 21Description 22=========== 23 24This format is not commonly used. This is a planar version of the YUYV 25format. The three components are separated into three sub-images or 26planes. The Y plane is first. The Y plane has one byte per pixel. The Cb 27plane immediately follows the Y plane in memory. The Cb plane is half 28the width of the Y plane (and of the image). Each Cb belongs to two 29pixels. For example, Cb\ :sub:`0` belongs to Y'\ :sub:`00`, 30Y'\ :sub:`01`. Following the Cb plane is the Cr plane, just like the Cb 31plane. 32 33If the Y plane has pad bytes after each row, then the Cr and Cb planes 34have half as many pad bytes after their rows. In other words, two Cx 35rows (including padding) is exactly as long as one Y row (including 36padding). 37 38**Byte Order.** 39Each cell is one byte. 40 41 42 43 44.. flat-table:: 45 :header-rows: 0 46 :stub-columns: 0 47 48 * - start + 0: 49 - Y'\ :sub:`00` 50 - Y'\ :sub:`01` 51 - Y'\ :sub:`02` 52 - Y'\ :sub:`03` 53 * - start + 4: 54 - Y'\ :sub:`10` 55 - Y'\ :sub:`11` 56 - Y'\ :sub:`12` 57 - Y'\ :sub:`13` 58 * - start + 8: 59 - Y'\ :sub:`20` 60 - Y'\ :sub:`21` 61 - Y'\ :sub:`22` 62 - Y'\ :sub:`23` 63 * - start + 12: 64 - Y'\ :sub:`30` 65 - Y'\ :sub:`31` 66 - Y'\ :sub:`32` 67 - Y'\ :sub:`33` 68 * - start + 16: 69 - Cb\ :sub:`00` 70 - Cb\ :sub:`01` 71 * - start + 18: 72 - Cb\ :sub:`10` 73 - Cb\ :sub:`11` 74 * - start + 20: 75 - Cb\ :sub:`20` 76 - Cb\ :sub:`21` 77 * - start + 22: 78 - Cb\ :sub:`30` 79 - Cb\ :sub:`31` 80 * - start + 24: 81 - Cr\ :sub:`00` 82 - Cr\ :sub:`01` 83 * - start + 26: 84 - Cr\ :sub:`10` 85 - Cr\ :sub:`11` 86 * - start + 28: 87 - Cr\ :sub:`20` 88 - Cr\ :sub:`21` 89 * - start + 30: 90 - Cr\ :sub:`30` 91 - Cr\ :sub:`31` 92 93 94**Color Sample Location:** 95 96 97 98.. flat-table:: 99 :header-rows: 0 100 :stub-columns: 0 101 102 * - 103 - 0 104 - 105 - 1 106 - 2 107 - 108 - 3 109 * - 0 110 - Y 111 - C 112 - Y 113 - Y 114 - C 115 - Y 116 * - 1 117 - Y 118 - C 119 - Y 120 - Y 121 - C 122 - Y 123 * - 2 124 - Y 125 - C 126 - Y 127 - Y 128 - C 129 - Y 130 * - 3 131 - Y 132 - C 133 - Y 134 - Y 135 - C 136 - Y 137