[deliverable/linux.git] / Documentation / media / uapi / v4l / pixfmt-nv24.rst

.. -*- coding: utf-8; mode: rst -*-

.. _V4L2-PIX-FMT-NV24:
.. _V4L2-PIX-FMT-NV42:

******************************************************
V4L2_PIX_FMT_NV24 ('NV24'), V4L2_PIX_FMT_NV42 ('NV42')
******************************************************

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

    -  .. 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`
Commit	Line	Data
5377d91f MH	1	.. -- coding: utf-8; mode: rst --
	2
	3	.. _V4L2-PIX-FMT-NV24:
9aff73d2	4	.. _V4L2-PIX-FMT-NV42:
5377d91f MH	5
	6	******************************************************
	7	V4L2_PIX_FMT_NV24 ('NV24'), V4L2_PIX_FMT_NV42 ('NV42')
	8	******************************************************
	9
5377d91f MH	10	V4L2_PIX_FMT_NV42
	11	Formats with full horizontal and vertical chroma resolutions, also known
	12	as YUV 4:4:4. One luminance and one chrominance plane with alternating
	13	chroma samples as opposed to ``V4L2_PIX_FMT_YVU420``
	14
	15
	16	Description
	17	===========
	18
	19	These are two-plane versions of the YUV 4:4:4 format. The three
	20	components are separated into two sub-images or planes. The Y plane is
	21	first, with each Y sample stored in one byte per pixel. For
	22	``V4L2_PIX_FMT_NV24``, a combined CbCr plane immediately follows the Y
	23	plane in memory. The CbCr plane has the same width and height, in
	24	pixels, as the Y plane (and the image). Each line contains one CbCr pair
	25	per pixel, with each Cb and Cr sample stored in one byte.
	26	``V4L2_PIX_FMT_NV42`` is the same except that the Cb and Cr samples are
	27	swapped, the CrCb plane starts with a Cr sample.
	28
	29	If the Y plane has pad bytes after each row, then the CbCr plane has
	30	twice as many pad bytes after its rows.
	31
056d2ee6	32	Byte Order.
5377d91f MH	33	Each cell is one byte.
	34
	35
5377d91f MH	36	.. flat-table::
	37	:header-rows: 0
	38	:stub-columns: 0
5377d91f MH	39
	40	- .. row 1
	41
	42	- start + 0:
	43
	44	- Y'\ :sub:`00`
	45
	46	- Y'\ :sub:`01`
	47
	48	- Y'\ :sub:`02`
	49
	50	- Y'\ :sub:`03`
	51
	52	- .. row 2
	53
	54	- start + 4:
	55
	56	- Y'\ :sub:`10`
	57
	58	- Y'\ :sub:`11`
	59
	60	- Y'\ :sub:`12`
	61
	62	- Y'\ :sub:`13`
	63
	64	- .. row 3
	65
	66	- start + 8:
	67
	68	- Y'\ :sub:`20`
	69
	70	- Y'\ :sub:`21`
	71
	72	- Y'\ :sub:`22`
	73
	74	- Y'\ :sub:`23`
	75
	76	- .. row 4
	77
	78	- start + 12:
	79
	80	- Y'\ :sub:`30`
	81
	82	- Y'\ :sub:`31`
	83
	84	- Y'\ :sub:`32`
	85
	86	- Y'\ :sub:`33`
	87
	88	- .. row 5
	89
	90	- start + 16:
	91
	92	- Cb\ :sub:`00`
	93
	94	- Cr\ :sub:`00`
	95
	96	- Cb\ :sub:`01`
	97
	98	- Cr\ :sub:`01`
	99
	100	- Cb\ :sub:`02`
	101
	102	- Cr\ :sub:`02`
103
104	- Cb\ :sub:`03`
105
106	- Cr\ :sub:`03`
107
108	- .. row 6
109
110	- start + 24:
111
112	- Cb\ :sub:`10`
113
114	- Cr\ :sub:`10`
115
116	- Cb\ :sub:`11`
117
118	- Cr\ :sub:`11`
119
120	- Cb\ :sub:`12`
121
122	- Cr\ :sub:`12`
123
124	- Cb\ :sub:`13`
125
126	- Cr\ :sub:`13`
127
128	- .. row 7
129
130	- start + 32:
131
132	- Cb\ :sub:`20`
133
134	- Cr\ :sub:`20`
135
136	- Cb\ :sub:`21`
137
138	- Cr\ :sub:`21`
139
140	- Cb\ :sub:`22`
141
142	- Cr\ :sub:`22`
143
144	- Cb\ :sub:`23`
145
146	- Cr\ :sub:`23`
147
148	- .. row 8
149
150	- start + 40:
151
152	- Cb\ :sub:`30`
153
154	- Cr\ :sub:`30`
155
156	- Cb\ :sub:`31`
157
158	- Cr\ :sub:`31`
159
160	- Cb\ :sub:`32`
161
162	- Cr\ :sub:`32`
163
164	- Cb\ :sub:`33`
165
166	- Cr\ :sub:`33`