diff options
Diffstat (limited to 'Documentation/media/uapi/v4l/pixfmt-nv24.rst')
-rw-r--r-- | Documentation/media/uapi/v4l/pixfmt-nv24.rst | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/Documentation/media/uapi/v4l/pixfmt-nv24.rst b/Documentation/media/uapi/v4l/pixfmt-nv24.rst new file mode 100644 index 000000000..db98f4764 --- /dev/null +++ b/Documentation/media/uapi/v4l/pixfmt-nv24.rst @@ -0,0 +1,171 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _V4L2-PIX-FMT-NV24: +.. _V4L2-PIX-FMT-NV42: + +****************************************************** +V4L2_PIX_FMT_NV24 ('NV24'), V4L2_PIX_FMT_NV42 ('NV42') +****************************************************** + +*man V4L2_PIX_FMT_NV24(2)* + +V4L2_PIX_FMT_NV42 +Formats with full horizontal and vertical chroma resolutions, also known +as YUV 4:4:4. One luminance and one chrominance plane with alternating +chroma samples as opposed to ``V4L2_PIX_FMT_YVU420`` + + +Description +=========== + +These are two-plane versions of the YUV 4:4:4 format. The three +components are separated into two sub-images or planes. The Y plane is +first, with each Y sample stored in one byte per pixel. For +``V4L2_PIX_FMT_NV24``, a combined CbCr plane immediately follows the Y +plane in memory. The CbCr plane has the same width and height, in +pixels, as the Y plane (and the image). Each line contains one CbCr pair +per pixel, with each Cb and Cr sample stored in one byte. +``V4L2_PIX_FMT_NV42`` is the same except that the Cb and Cr samples are +swapped, the CrCb plane starts with a Cr sample. + +If the Y plane has pad bytes after each row, then the CbCr plane has +twice as many pad bytes after its rows. + +**Byte Order.** +Each cell is one byte. + + + +.. flat-table:: + :header-rows: 0 + :stub-columns: 0 + :widths: 2 1 1 1 1 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` + + - Cr\ :sub:`00` + + - Cb\ :sub:`01` + + - Cr\ :sub:`01` + + - Cb\ :sub:`02` + + - Cr\ :sub:`02` + + - Cb\ :sub:`03` + + - Cr\ :sub:`03` + + - .. row 6 + + - start + 24: + + - Cb\ :sub:`10` + + - Cr\ :sub:`10` + + - Cb\ :sub:`11` + + - Cr\ :sub:`11` + + - Cb\ :sub:`12` + + - Cr\ :sub:`12` + + - Cb\ :sub:`13` + + - Cr\ :sub:`13` + + - .. row 7 + + - start + 32: + + - Cb\ :sub:`20` + + - Cr\ :sub:`20` + + - Cb\ :sub:`21` + + - Cr\ :sub:`21` + + - Cb\ :sub:`22` + + - Cr\ :sub:`22` + + - Cb\ :sub:`23` + + - Cr\ :sub:`23` + + - .. row 8 + + - start + 40: + + - Cb\ :sub:`30` + + - Cr\ :sub:`30` + + - Cb\ :sub:`31` + + - Cr\ :sub:`31` + + - Cb\ :sub:`32` + + - Cr\ :sub:`32` + + - Cb\ :sub:`33` + + - Cr\ :sub:`33` |