2.6.20. 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 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
2 Y   Y   Y   Y
3 Y   Y   Y   Y