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diff --git a/Documentation/userspace-api/media/v4l/pixfmt-yuyv.rst b/Documentation/userspace-api/media/v4l/pixfmt-yuyv.rst new file mode 100644 index 000000000000..fe70e007787d --- /dev/null +++ b/Documentation/userspace-api/media/v4l/pixfmt-yuyv.rst @@ -0,0 +1,125 @@ +.. 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-YUYV: + +************************** +V4L2_PIX_FMT_YUYV ('YUYV') +************************** + + +Packed format with ½ horizontal chroma resolution, also known as YUV +4:2:2 + + +Description +=========== + +In this format each four bytes is two pixels. Each four bytes is two +Y's, a Cb and a Cr. Each Y goes to one of the pixels, and the Cb and Cr +belong to both pixels. As you can see, the Cr and Cb components have +half the horizontal resolution of the Y component. ``V4L2_PIX_FMT_YUYV`` +is known in the Windows environment as YUY2. + +**Byte Order.** +Each cell is one byte. + + + + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + + * - start + 0: + - Y'\ :sub:`00` + - Cb\ :sub:`00` + - Y'\ :sub:`01` + - Cr\ :sub:`00` + - Y'\ :sub:`02` + - Cb\ :sub:`01` + - Y'\ :sub:`03` + - Cr\ :sub:`01` + * - start + 8: + - Y'\ :sub:`10` + - Cb\ :sub:`10` + - Y'\ :sub:`11` + - Cr\ :sub:`10` + - Y'\ :sub:`12` + - Cb\ :sub:`11` + - Y'\ :sub:`13` + - Cr\ :sub:`11` + * - start + 16: + - Y'\ :sub:`20` + - Cb\ :sub:`20` + - Y'\ :sub:`21` + - Cr\ :sub:`20` + - Y'\ :sub:`22` + - Cb\ :sub:`21` + - Y'\ :sub:`23` + - Cr\ :sub:`21` + * - start + 24: + - Y'\ :sub:`30` + - Cb\ :sub:`30` + - Y'\ :sub:`31` + - Cr\ :sub:`30` + - Y'\ :sub:`32` + - Cb\ :sub:`31` + - Y'\ :sub:`33` + - Cr\ :sub:`31` + + +**Color Sample Location:** + + + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + + * - + - 0 + - + - 1 + - + - 2 + - + - 3 + * - 0 + - Y + - C + - Y + - + - Y + - C + - Y + * - 1 + - Y + - C + - Y + - + - Y + - C + - Y + * - 2 + - Y + - C + - Y + - + - Y + - C + - Y + * - 3 + - Y + - C + - Y + - + - Y + - C + - Y |