V4L2_PIX_FMT_M420 ('M420')
&manvol;
V4L2_PIX_FMT_M420
Format with ½ horizontal and vertical chroma
resolution, also known as YUV 4:2:0. Hybrid plane line-interleaved
layout.
Description
M420 is a YUV format with ½ horizontal and vertical chroma
subsampling (YUV 4:2:0). Pixels are organized as interleaved luma and
chroma planes. Two lines of luma data are followed by one line of chroma
data.
The luma plane has one byte per pixel. The chroma plane contains
interleaved CbCr pixels subsampled by ½ in the horizontal and
vertical directions. Each CbCr pair belongs to four pixels. For example,
Cb0/Cr0 belongs to
Y'00, Y'01,
Y'10, Y'11.
All line lengths are identical: if the Y lines include pad bytes
so do the CbCr lines.
<constant>V4L2_PIX_FMT_M420</constant> 4 × 4
pixel image
Byte Order.
Each cell is one byte.
start + 0:
Y'00
Y'01
Y'02
Y'03
start + 4:
Y'10
Y'11
Y'12
Y'13
start + 8:
Cb00
Cr00
Cb01
Cr01
start + 16:
Y'20
Y'21
Y'22
Y'23
start + 20:
Y'30
Y'31
Y'32
Y'33
start + 24:
Cb10
Cr10
Cb11
Cr11
Color Sample Location.
01
23
0
YY
YY
C
C
1
YY
YY
2
YY
YY
C
C
3
YY
YY