1*4882a593Smuzhiyun.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later 2*4882a593Smuzhiyun 3*4882a593Smuzhiyun.. _V4L2-PIX-FMT-YUV422P: 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun***************************** 6*4882a593SmuzhiyunV4L2_PIX_FMT_YUV422P ('422P') 7*4882a593Smuzhiyun***************************** 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun 10*4882a593SmuzhiyunFormat with ½ horizontal chroma resolution, also known as YUV 4:2:2. 11*4882a593SmuzhiyunPlanar layout as opposed to ``V4L2_PIX_FMT_YUYV`` 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun 14*4882a593SmuzhiyunDescription 15*4882a593Smuzhiyun=========== 16*4882a593Smuzhiyun 17*4882a593SmuzhiyunThis format is not commonly used. This is a planar version of the YUYV 18*4882a593Smuzhiyunformat. The three components are separated into three sub-images or 19*4882a593Smuzhiyunplanes. The Y plane is first. The Y plane has one byte per pixel. The Cb 20*4882a593Smuzhiyunplane immediately follows the Y plane in memory. The Cb plane is half 21*4882a593Smuzhiyunthe width of the Y plane (and of the image). Each Cb belongs to two 22*4882a593Smuzhiyunpixels. For example, Cb\ :sub:`0` belongs to Y'\ :sub:`00`, 23*4882a593SmuzhiyunY'\ :sub:`01`. Following the Cb plane is the Cr plane, just like the Cb 24*4882a593Smuzhiyunplane. 25*4882a593Smuzhiyun 26*4882a593SmuzhiyunIf the Y plane has pad bytes after each row, then the Cr and Cb planes 27*4882a593Smuzhiyunhave half as many pad bytes after their rows. In other words, two Cx 28*4882a593Smuzhiyunrows (including padding) is exactly as long as one Y row (including 29*4882a593Smuzhiyunpadding). 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun**Byte Order.** 32*4882a593SmuzhiyunEach cell is one byte. 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun.. flat-table:: 38*4882a593Smuzhiyun :header-rows: 0 39*4882a593Smuzhiyun :stub-columns: 0 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun * - start + 0: 42*4882a593Smuzhiyun - Y'\ :sub:`00` 43*4882a593Smuzhiyun - Y'\ :sub:`01` 44*4882a593Smuzhiyun - Y'\ :sub:`02` 45*4882a593Smuzhiyun - Y'\ :sub:`03` 46*4882a593Smuzhiyun * - start + 4: 47*4882a593Smuzhiyun - Y'\ :sub:`10` 48*4882a593Smuzhiyun - Y'\ :sub:`11` 49*4882a593Smuzhiyun - Y'\ :sub:`12` 50*4882a593Smuzhiyun - Y'\ :sub:`13` 51*4882a593Smuzhiyun * - start + 8: 52*4882a593Smuzhiyun - Y'\ :sub:`20` 53*4882a593Smuzhiyun - Y'\ :sub:`21` 54*4882a593Smuzhiyun - Y'\ :sub:`22` 55*4882a593Smuzhiyun - Y'\ :sub:`23` 56*4882a593Smuzhiyun * - start + 12: 57*4882a593Smuzhiyun - Y'\ :sub:`30` 58*4882a593Smuzhiyun - Y'\ :sub:`31` 59*4882a593Smuzhiyun - Y'\ :sub:`32` 60*4882a593Smuzhiyun - Y'\ :sub:`33` 61*4882a593Smuzhiyun * - start + 16: 62*4882a593Smuzhiyun - Cb\ :sub:`00` 63*4882a593Smuzhiyun - Cb\ :sub:`01` 64*4882a593Smuzhiyun * - start + 18: 65*4882a593Smuzhiyun - Cb\ :sub:`10` 66*4882a593Smuzhiyun - Cb\ :sub:`11` 67*4882a593Smuzhiyun * - start + 20: 68*4882a593Smuzhiyun - Cb\ :sub:`20` 69*4882a593Smuzhiyun - Cb\ :sub:`21` 70*4882a593Smuzhiyun * - start + 22: 71*4882a593Smuzhiyun - Cb\ :sub:`30` 72*4882a593Smuzhiyun - Cb\ :sub:`31` 73*4882a593Smuzhiyun * - start + 24: 74*4882a593Smuzhiyun - Cr\ :sub:`00` 75*4882a593Smuzhiyun - Cr\ :sub:`01` 76*4882a593Smuzhiyun * - start + 26: 77*4882a593Smuzhiyun - Cr\ :sub:`10` 78*4882a593Smuzhiyun - Cr\ :sub:`11` 79*4882a593Smuzhiyun * - start + 28: 80*4882a593Smuzhiyun - Cr\ :sub:`20` 81*4882a593Smuzhiyun - Cr\ :sub:`21` 82*4882a593Smuzhiyun * - start + 30: 83*4882a593Smuzhiyun - Cr\ :sub:`30` 84*4882a593Smuzhiyun - Cr\ :sub:`31` 85*4882a593Smuzhiyun 86*4882a593Smuzhiyun 87*4882a593Smuzhiyun**Color Sample Location:** 88*4882a593Smuzhiyun 89*4882a593Smuzhiyun 90*4882a593Smuzhiyun 91*4882a593Smuzhiyun.. flat-table:: 92*4882a593Smuzhiyun :header-rows: 0 93*4882a593Smuzhiyun :stub-columns: 0 94*4882a593Smuzhiyun 95*4882a593Smuzhiyun * - 96*4882a593Smuzhiyun - 0 97*4882a593Smuzhiyun - 98*4882a593Smuzhiyun - 1 99*4882a593Smuzhiyun - 2 100*4882a593Smuzhiyun - 101*4882a593Smuzhiyun - 3 102*4882a593Smuzhiyun * - 0 103*4882a593Smuzhiyun - Y 104*4882a593Smuzhiyun - C 105*4882a593Smuzhiyun - Y 106*4882a593Smuzhiyun - Y 107*4882a593Smuzhiyun - C 108*4882a593Smuzhiyun - Y 109*4882a593Smuzhiyun * - 1 110*4882a593Smuzhiyun - Y 111*4882a593Smuzhiyun - C 112*4882a593Smuzhiyun - Y 113*4882a593Smuzhiyun - Y 114*4882a593Smuzhiyun - C 115*4882a593Smuzhiyun - Y 116*4882a593Smuzhiyun * - 2 117*4882a593Smuzhiyun - Y 118*4882a593Smuzhiyun - C 119*4882a593Smuzhiyun - Y 120*4882a593Smuzhiyun - Y 121*4882a593Smuzhiyun - C 122*4882a593Smuzhiyun - Y 123*4882a593Smuzhiyun * - 3 124*4882a593Smuzhiyun - Y 125*4882a593Smuzhiyun - C 126*4882a593Smuzhiyun - Y 127*4882a593Smuzhiyun - Y 128*4882a593Smuzhiyun - C 129*4882a593Smuzhiyun - Y 130