2.7.22. V4L2_PIX_FMT_YVU410 (‘YVU9’), V4L2_PIX_FMT_YUV410 (‘YUV9’)

V4L2_PIX_FMT_YUV410 Planar formats with ¼ horizontal and vertical chroma resolution, also known as YUV 4:1:0

2.7.22.1. Description

These are planar formats, as opposed to a packed format. The three components are separated into three sub-images or planes. The Y plane is first. The Y plane has one byte per pixel. For V4L2_PIX_FMT_YVU410, the Cr plane immediately follows the Y plane in memory. The Cr plane is ¼ the width and ¼ the height of the Y plane (and of the image). Each Cr belongs to 16 pixels, a four-by-four square of the image. Following the Cr plane is the Cb plane, just like the Cr plane. V4L2_PIX_FMT_YUV410 is the same, except the Cb plane comes first, then the Cr plane.

If the Y plane has pad bytes after each row, then the Cr and Cb planes have ¼ as many pad bytes after their rows. In other words, four Cx rows (including padding) are exactly as long as one Y row (including padding).

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:

Y’20

Y’21

Y’22

Y’23

start + 12:

Y’30

Y’31

Y’32

Y’33

start + 16:

Cr00

start + 17:

Cb00

Color Sample Location:

0

1

2

3

0

Y

Y

Y

Y

1

Y

Y

Y

Y

C

2

Y

Y

Y

Y

3

Y

Y

Y

Y