diff options
Diffstat (limited to 'Documentation/media/uapi/v4l/pixfmt-yuv411p.rst')
-rw-r--r-- | Documentation/media/uapi/v4l/pixfmt-yuv411p.rst | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/Documentation/media/uapi/v4l/pixfmt-yuv411p.rst b/Documentation/media/uapi/v4l/pixfmt-yuv411p.rst new file mode 100644 index 0000000..f85e3f3 --- /dev/null +++ b/Documentation/media/uapi/v4l/pixfmt-yuv411p.rst @@ -0,0 +1,214 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _V4L2-PIX-FMT-YUV411P: + +***************************** +V4L2_PIX_FMT_YUV411P ('411P') +***************************** + +*man V4L2_PIX_FMT_YUV411P(2)* + +Format with ¼ horizontal chroma resolution, also known as YUV 4:1:1. +Planar layout as opposed to ``V4L2_PIX_FMT_Y41P`` + + +Description +=========== + +This format is not commonly used. This is a planar format similar to the +4:2:2 planar format except with half as many chroma. The three +components are separated into three sub-images or planes. The Y plane is +first. The Y plane has one byte per pixel. The Cb plane immediately +follows the Y plane in memory. The Cb plane is ¼ the width of the Y +plane (and of the image). Each Cb belongs to 4 pixels all on the same +row. For example, Cb\ :sub:`0` belongs to Y'\ :sub:`00`, Y'\ :sub:`01`, +Y'\ :sub:`02` and Y'\ :sub:`03`. Following the Cb plane is the Cr plane, +just like the Cb 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 C x rows +(including padding) is exactly as long as one Y row (including padding). + +**Byte Order.** +Each cell is one byte. + + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 2 1 1 1 1 + + + - .. row 1 + + - start + 0: + + - Y'\ :sub:`00` + + - Y'\ :sub:`01` + + - Y'\ :sub:`02` + + - Y'\ :sub:`03` + + - .. row 2 + + - start + 4: + + - Y'\ :sub:`10` + + - Y'\ :sub:`11` + + - Y'\ :sub:`12` + + - Y'\ :sub:`13` + + - .. row 3 + + - start + 8: + + - Y'\ :sub:`20` + + - Y'\ :sub:`21` + + - Y'\ :sub:`22` + + - Y'\ :sub:`23` + + - .. row 4 + + - start + 12: + + - Y'\ :sub:`30` + + - Y'\ :sub:`31` + + - Y'\ :sub:`32` + + - Y'\ :sub:`33` + + - .. row 5 + + - start + 16: + + - Cb\ :sub:`00` + + - .. row 6 + + - start + 17: + + - Cb\ :sub:`10` + + - .. row 7 + + - start + 18: + + - Cb\ :sub:`20` + + - .. row 8 + + - start + 19: + + - Cb\ :sub:`30` + + - .. row 9 + + - start + 20: + + - Cr\ :sub:`00` + + - .. row 10 + + - start + 21: + + - Cr\ :sub:`10` + + - .. row 11 + + - start + 22: + + - Cr\ :sub:`20` + + - .. row 12 + + - start + 23: + + - Cr\ :sub:`30` + + +**Color Sample Location..** + + + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + + + - .. row 1 + + - + - 0 + + - 1 + + - + - 2 + + - 3 + + - .. row 2 + + - 0 + + - Y + + - Y + + - C + + - Y + + - Y + + - .. row 3 + + - 1 + + - Y + + - Y + + - C + + - Y + + - Y + + - .. row 4 + + - 2 + + - Y + + - Y + + - C + + - Y + + - Y + + - .. row 5 + + - 3 + + - Y + + - Y + + - C + + - Y + + - Y |