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140 lines
2.9 KiB
ReStructuredText
140 lines
2.9 KiB
ReStructuredText
.. _V4L2-PIX-FMT-YUV444M:
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.. _v4l2-pix-fmt-yvu444m:
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************************************************************
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V4L2_PIX_FMT_YUV444M ('YM24'), V4L2_PIX_FMT_YVU444M ('YM42')
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************************************************************
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V4L2_PIX_FMT_YVU444M
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Planar formats with full horizontal resolution, also known as YUV and
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YVU 4:4:4
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Description
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===========
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This is a multi-planar format, as opposed to a packed format. The three
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components are separated into three sub-images or planes.
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The Y plane is first. The Y plane has one byte per pixel. For
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``V4L2_PIX_FMT_YUV444M`` the Cb data constitutes the second plane which
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is the same width and height as the Y plane (and as the image). The Cr
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data, just like the Cb plane, is in the third plane.
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``V4L2_PIX_FMT_YVU444M`` is the same except the Cr data is stored in the
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second plane and the Cb data in the third plane.
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If the Y plane has pad bytes after each row, then the Cb and Cr planes
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have the same number of pad bytes after their rows.
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``V4L2_PIX_FMT_YUV444M`` and ``V4L2_PIX_FMT_YUV444M`` are intended to be
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used only in drivers and applications that support the multi-planar API,
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described in :ref:`planar-apis`.
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**Byte Order.**
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Each cell is one byte.
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.. flat-table::
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:header-rows: 0
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:stub-columns: 0
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* - start0 + 0:
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- Y'\ :sub:`00`
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- Y'\ :sub:`01`
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- Y'\ :sub:`02`
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- Y'\ :sub:`03`
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* - start0 + 4:
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- Y'\ :sub:`10`
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- Y'\ :sub:`11`
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- Y'\ :sub:`12`
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- Y'\ :sub:`13`
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* - start0 + 8:
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- Y'\ :sub:`20`
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- Y'\ :sub:`21`
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- Y'\ :sub:`22`
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- Y'\ :sub:`23`
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* - start0 + 12:
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- Y'\ :sub:`30`
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- Y'\ :sub:`31`
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- Y'\ :sub:`32`
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- Y'\ :sub:`33`
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* -
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* - start1 + 0:
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- Cb\ :sub:`00`
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- Cb\ :sub:`01`
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- Cb\ :sub:`02`
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- Cb\ :sub:`03`
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* - start1 + 4:
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- Cb\ :sub:`10`
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- Cb\ :sub:`11`
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- Cb\ :sub:`12`
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- Cb\ :sub:`13`
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* - start1 + 8:
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- Cb\ :sub:`20`
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- Cb\ :sub:`21`
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- Cb\ :sub:`22`
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- Cb\ :sub:`23`
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* - start1 + 12:
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- Cb\ :sub:`20`
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- Cb\ :sub:`21`
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- Cb\ :sub:`32`
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- Cb\ :sub:`33`
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* -
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* - start2 + 0:
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- Cr\ :sub:`00`
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- Cr\ :sub:`01`
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- Cr\ :sub:`02`
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- Cr\ :sub:`03`
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* - start2 + 4:
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- Cr\ :sub:`10`
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- Cr\ :sub:`11`
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- Cr\ :sub:`12`
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- Cr\ :sub:`13`
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* - start2 + 8:
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- Cr\ :sub:`20`
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- Cr\ :sub:`21`
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- Cr\ :sub:`22`
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- Cr\ :sub:`23`
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* - start2 + 12:
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- Cr\ :sub:`30`
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- Cr\ :sub:`31`
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- Cr\ :sub:`32`
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- Cr\ :sub:`33`
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**Color Sample Location:**
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.. flat-table::
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:header-rows: 0
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:stub-columns: 0
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* -
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- 0
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- 1
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- 2
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- 3
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* - 0
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- YC
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- YC
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- YC
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- YC
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* - 1
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- YC
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- YC
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- YC
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- YC
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* - 2
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- YC
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- YC
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- YC
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- YC
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* - 3
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- YC
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- YC
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- YC
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- YC
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