| .. -*- coding: utf-8; mode: rst -*- |
| |
| .. _V4L2-PIX-FMT-NV16M: |
| |
| ******************************************************** |
| V4L2_PIX_FMT_NV16M ('NM16'), V4L2_PIX_FMT_NV61M ('NM61') |
| ******************************************************** |
| |
| *man V4L2_PIX_FMT_NV16M(2)* |
| |
| V4L2_PIX_FMT_NV61M |
| Variation of ``V4L2_PIX_FMT_NV16`` and ``V4L2_PIX_FMT_NV61`` with planes |
| non contiguous in memory. |
| |
| |
| Description |
| =========== |
| |
| This is a multi-planar, two-plane version of the YUV 4:2:2 format. The |
| three components are separated into two sub-images or planes. |
| ``V4L2_PIX_FMT_NV16M`` differs from ``V4L2_PIX_FMT_NV16`` in that the |
| two planes are non-contiguous in memory, i.e. the chroma plane does not |
| necessarily immediately follow the luma plane. The luminance data |
| occupies the first plane. The Y plane has one byte per pixel. In the |
| second plane there is chrominance data with alternating chroma samples. |
| The CbCr plane is the same width and height, in bytes, as the Y plane. |
| Each CbCr pair belongs to two pixels. For example, |
| Cb\ :sub:`0`/Cr\ :sub:`0` belongs to Y'\ :sub:`00`, Y'\ :sub:`01`. |
| ``V4L2_PIX_FMT_NV61M`` is the same as ``V4L2_PIX_FMT_NV16M`` except the |
| Cb and Cr bytes are swapped, the CrCb plane starts with a Cr byte. |
| |
| ``V4L2_PIX_FMT_NV16M`` and ``V4L2_PIX_FMT_NV61M`` are intended to be |
| used only in drivers and applications that support the multi-planar API, |
| described in :ref:`planar-apis`. |
| |
| **Byte Order.** |
| Each cell is one byte. |
| |
| |
| |
| .. flat-table:: |
| :header-rows: 0 |
| :stub-columns: 0 |
| :widths: 2 1 1 1 1 |
| |
| |
| - .. row 1 |
| |
| - start0 + 0: |
| |
| - Y'\ :sub:`00` |
| |
| - Y'\ :sub:`01` |
| |
| - Y'\ :sub:`02` |
| |
| - Y'\ :sub:`03` |
| |
| - .. row 2 |
| |
| - start0 + 4: |
| |
| - Y'\ :sub:`10` |
| |
| - Y'\ :sub:`11` |
| |
| - Y'\ :sub:`12` |
| |
| - Y'\ :sub:`13` |
| |
| - .. row 3 |
| |
| - start0 + 8: |
| |
| - Y'\ :sub:`20` |
| |
| - Y'\ :sub:`21` |
| |
| - Y'\ :sub:`22` |
| |
| - Y'\ :sub:`23` |
| |
| - .. row 4 |
| |
| - start0 + 12: |
| |
| - Y'\ :sub:`30` |
| |
| - Y'\ :sub:`31` |
| |
| - Y'\ :sub:`32` |
| |
| - Y'\ :sub:`33` |
| |
| - .. row 5 |
| |
| - |
| |
| - .. row 6 |
| |
| - start1 + 0: |
| |
| - Cb\ :sub:`00` |
| |
| - Cr\ :sub:`00` |
| |
| - Cb\ :sub:`02` |
| |
| - Cr\ :sub:`02` |
| |
| - .. row 7 |
| |
| - start1 + 4: |
| |
| - Cb\ :sub:`10` |
| |
| - Cr\ :sub:`10` |
| |
| - Cb\ :sub:`12` |
| |
| - Cr\ :sub:`12` |
| |
| - .. row 8 |
| |
| - start1 + 8: |
| |
| - Cb\ :sub:`20` |
| |
| - Cr\ :sub:`20` |
| |
| - Cb\ :sub:`22` |
| |
| - Cr\ :sub:`22` |
| |
| - .. row 9 |
| |
| - start1 + 12: |
| |
| - Cb\ :sub:`30` |
| |
| - Cr\ :sub:`30` |
| |
| - Cb\ :sub:`32` |
| |
| - Cr\ :sub:`32` |
| |
| |
| **Color Sample Location..** |
| |
| |
| |
| .. flat-table:: |
| :header-rows: 0 |
| :stub-columns: 0 |
| |
| |
| - .. row 1 |
| |
| - |
| - 0 |
| |
| - |
| - 1 |
| |
| - 2 |
| |
| - |
| - 3 |
| |
| - .. row 2 |
| |
| - 0 |
| |
| - Y |
| |
| - |
| - Y |
| |
| - Y |
| |
| - |
| - Y |
| |
| - .. row 3 |
| |
| - |
| - |
| - C |
| |
| - |
| - |
| - C |
| |
| - |
| |
| - .. row 4 |
| |
| - 1 |
| |
| - Y |
| |
| - |
| - Y |
| |
| - Y |
| |
| - |
| - Y |
| |
| - .. row 5 |
| |
| - |
| - |
| - C |
| |
| - |
| - |
| - C |
| |
| - |
| |
| - .. row 6 |
| |
| - |
| |
| - .. row 7 |
| |
| - 2 |
| |
| - Y |
| |
| - |
| - Y |
| |
| - Y |
| |
| - |
| - Y |
| |
| - .. row 8 |
| |
| - |
| - |
| - C |
| |
| - |
| - |
| - C |
| |
| - |
| |
| - .. row 9 |
| |
| - 3 |
| |
| - Y |
| |
| - |
| - Y |
| |
| - Y |
| |
| - |
| - Y |
| |
| - .. row 10 |
| |
| - |
| - |
| - C |
| |
| - |
| - |
| - C |
| |
| - |